* [PATCH v7 00/13] s390x: CPU Topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
Hi,
This new spin adds RESET for the CPU Topology.
I added Matthew's patch to help compile the source until
the migration V2 is in the main tree.
The goal of this series is to implement CPU topology for S390, it
improves the preceeding series with the implementation of books and
drawers, of non uniform CPU topology and with documentation.
To use these patches, you will need the Linux series version 8.
You find it there:
https://lkml.org/lkml/2022/4/20/465
Currently this code is for KVM only, I have no idea if it is interesting
to provide a TCG patch. If ever it will be done in another series.
To have a better understanding of the S390x CPU Topology and its
implementation in QEMU you can have a look at the documentation in the
last patch or follow the introduction here under.
A short introduction
====================
CPU Topology is described in the S390 POP with essentially the description
of two instructions:
PTF Perform Topology function used to poll for topology change
and used to set the polarization but this part is not part of this item.
STSI Store System Information and the SYSIB 15.1.x providing the Topology
configuration.
S390 Topology is a 6 levels hierarchical topology with up to 5 level
of containers. The last topology level, specifying the CPU cores.
This patch series only uses the two lower levels sockets and cores.
To get the information on the topology, S390 provides the STSI
instruction, which stores a structures providing the list of the
containers used in the Machine topology: the SYSIB.
A selector within the STSI instruction allow to chose how many topology
levels will be provide in the SYSIB.
Using the Topology List Entries (TLE) provided inside the SYSIB we
the Linux kernel is able to compute the information about the cache
distance between two cores and can use this information to take
scheduling decisions.
The design
==========
1) To be ready for hotplug, I chose an Object oriented design
of the topology containers:
- A node is a bridge on the SYSBUS and defines a "node bus"
- A drawer is hotplug on the "node bus"
- A book on the "drawer bus"
- A socket on the "book bus"
- And the CPU Topology List Entry (CPU-TLE)sits on the socket bus.
These objects will be enhanced with the cache information when
NUMA is implemented.
This also allows for easy retrieval when building the different SYSIB
for Store Topology System Information (STSI)
2) Perform Topology Function (PTF) instruction is made available to the
guest with a new KVM capability and intercepted in QEMU, allowing the
guest to pool for topology changes.
Features
========
- There is no direct match between IDs shown by:
- lscpu (unrelated numbered list),
- SYSIB 15.1.x (topology ID)
- The CPU number, left column of lscpu, is used to reference a CPU
by Linux tools
While the CPU address is used by QEMU for hotplug.
- Effect of -smp parsing on the topology with an example:
-smp 9,sockets=4,cores=4,maxcpus=16
We have 4 socket each holding 4 cores so that we have a maximum
of 16 CPU, 9 of them are active on boot. (Should be obvious)
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
#
- To plug a new CPU inside the topology one can simply use the CPU
address like in:
(qemu) device_add host-s390x-cpu,core-id=12
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
9 - - - - - ::: no yes horizontal 12
# chcpu -e 9
CPU 9 enabled
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
9 0 0 0 3 9 9:9:9:9 yes yes horizontal 12
#
It is up to the admin level, Libvirt for example, to pin the righ CPU to the right
vCPU, but as we can see without NUMA, chosing separate sockets for CPUs is not easy
without hotplug because without information the code will assign the vCPU and fill
the sockets one after the other.
Note that this is also the default behavior on the LPAR.
Conclusion
==========
This patch, together with the associated KVM patch allows to provide CPU topology
information to the guest.
Currently, only dedicated vCPU and CPU are supported and a NUMA topology can only
be handled using CPU hotplug inside the guest.
Regards,
Pierre
Matthew Rosato (1):
vfio: tolerate migration protocol v1 uapi renames
Pierre Morel (12):
Update linux headers
s390x: topology: CPU topology objects and structures
s390x: topology: implementating Store Topology System Information
s390x: topology: Adding books to CPU topology
s390x: topology: Adding books to STSI
s390x: topology: Adding drawers to CPU topology
s390x: topology: Adding drawers to STSI
s390x: topology: implementing numa for the s390x topology
s390x: kvm: topology: interception of PTF instruction
s390x: topology: resetting the Topology-Change-Report
s390x: CPU topology: CPU topology migration
s390x: topology: activating CPU topology
hw/core/machine-smp.c | 48 +-
hw/core/machine.c | 22 +
hw/s390x/cpu-topology.c | 647 ++++++++++++++++++
hw/s390x/meson.build | 1 +
hw/s390x/s390-virtio-ccw.c | 125 +++-
hw/vfio/common.c | 2 +-
hw/vfio/migration.c | 19 +-
include/hw/boards.h | 8 +
include/hw/s390x/cpu-topology.h | 99 +++
include/hw/s390x/s390-virtio-ccw.h | 6 +
include/hw/s390x/sclp.h | 1 +
.../linux/input-event-codes.h | 4 +-
.../standard-headers/linux/virtio_config.h | 6 +
.../standard-headers/linux/virtio_crypto.h | 82 ++-
linux-headers/asm-arm64/kvm.h | 16 +
linux-headers/asm-generic/mman-common.h | 2 +
linux-headers/asm-mips/mman.h | 2 +
linux-headers/asm-s390/kvm.h | 9 +
linux-headers/linux/kvm.h | 20 +-
linux-headers/linux/psci.h | 4 +
linux-headers/linux/userfaultfd.h | 8 +-
linux-headers/linux/vfio.h | 406 ++++++-----
linux-headers/linux/vhost.h | 7 +
qapi/machine.json | 14 +-
qemu-options.hx | 6 +-
softmmu/vl.c | 6 +
target/s390x/cpu-sysemu.c | 7 +
target/s390x/cpu.h | 51 ++
target/s390x/cpu_models.c | 1 +
target/s390x/cpu_topology.c | 169 +++++
target/s390x/kvm/kvm.c | 96 +++
target/s390x/kvm/kvm_s390x.h | 2 +
target/s390x/meson.build | 1 +
33 files changed, 1651 insertions(+), 246 deletions(-)
create mode 100644 hw/s390x/cpu-topology.c
create mode 100644 include/hw/s390x/cpu-topology.h
create mode 100644 target/s390x/cpu_topology.c
--
2.27.0
Changelog:
- since v6
- Changes on smp args in qemu-options
(Daniel)
- changed comments in machine.jason
(Daniel)
- Added reset
(Janosch)
- since v5
- rebasing on newer QEMU version
- reworked most lines above 80 characters.
- since v4
- Added drawer and books to topology
- Added numa topology
- Added documentation
- since v3
- Added migration
(Thomas)
- Separated STSI instruction from KVM to prepare TCG
(Thomas)
- Take care of endianess to prepare TCG
(Thomas)
- Added comments on STSI CPU container and PFT instruction
(Thomas)
- Moved enabling the instructions as the last patch
(Thomas)
^ permalink raw reply [flat|nested] 42+ messages in thread
* [PATCH v7 00/13] s390x: CPU Topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
Hi,
This new spin adds RESET for the CPU Topology.
I added Matthew's patch to help compile the source until
the migration V2 is in the main tree.
The goal of this series is to implement CPU topology for S390, it
improves the preceeding series with the implementation of books and
drawers, of non uniform CPU topology and with documentation.
To use these patches, you will need the Linux series version 8.
You find it there:
https://lkml.org/lkml/2022/4/20/465
Currently this code is for KVM only, I have no idea if it is interesting
to provide a TCG patch. If ever it will be done in another series.
To have a better understanding of the S390x CPU Topology and its
implementation in QEMU you can have a look at the documentation in the
last patch or follow the introduction here under.
A short introduction
====================
CPU Topology is described in the S390 POP with essentially the description
of two instructions:
PTF Perform Topology function used to poll for topology change
and used to set the polarization but this part is not part of this item.
STSI Store System Information and the SYSIB 15.1.x providing the Topology
configuration.
S390 Topology is a 6 levels hierarchical topology with up to 5 level
of containers. The last topology level, specifying the CPU cores.
This patch series only uses the two lower levels sockets and cores.
To get the information on the topology, S390 provides the STSI
instruction, which stores a structures providing the list of the
containers used in the Machine topology: the SYSIB.
A selector within the STSI instruction allow to chose how many topology
levels will be provide in the SYSIB.
Using the Topology List Entries (TLE) provided inside the SYSIB we
the Linux kernel is able to compute the information about the cache
distance between two cores and can use this information to take
scheduling decisions.
The design
==========
1) To be ready for hotplug, I chose an Object oriented design
of the topology containers:
- A node is a bridge on the SYSBUS and defines a "node bus"
- A drawer is hotplug on the "node bus"
- A book on the "drawer bus"
- A socket on the "book bus"
- And the CPU Topology List Entry (CPU-TLE)sits on the socket bus.
These objects will be enhanced with the cache information when
NUMA is implemented.
This also allows for easy retrieval when building the different SYSIB
for Store Topology System Information (STSI)
2) Perform Topology Function (PTF) instruction is made available to the
guest with a new KVM capability and intercepted in QEMU, allowing the
guest to pool for topology changes.
Features
========
- There is no direct match between IDs shown by:
- lscpu (unrelated numbered list),
- SYSIB 15.1.x (topology ID)
- The CPU number, left column of lscpu, is used to reference a CPU
by Linux tools
While the CPU address is used by QEMU for hotplug.
- Effect of -smp parsing on the topology with an example:
-smp 9,sockets=4,cores=4,maxcpus=16
We have 4 socket each holding 4 cores so that we have a maximum
of 16 CPU, 9 of them are active on boot. (Should be obvious)
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
#
- To plug a new CPU inside the topology one can simply use the CPU
address like in:
(qemu) device_add host-s390x-cpu,core-id=12
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
9 - - - - - ::: no yes horizontal 12
# chcpu -e 9
CPU 9 enabled
# lscpu -e
CPU NODE DRAWER BOOK SOCKET CORE L1d:L1i:L2d:L2i ONLINE CONFIGURED POLARIZATION ADDRESS
0 0 0 0 0 0 0:0:0:0 yes yes horizontal 0
1 0 0 0 0 1 1:1:1:1 yes yes horizontal 1
2 0 0 0 0 2 2:2:2:2 yes yes horizontal 2
3 0 0 0 0 3 3:3:3:3 yes yes horizontal 3
4 0 0 0 1 4 4:4:4:4 yes yes horizontal 4
5 0 0 0 1 5 5:5:5:5 yes yes horizontal 5
6 0 0 0 1 6 6:6:6:6 yes yes horizontal 6
7 0 0 0 1 7 7:7:7:7 yes yes horizontal 7
8 0 0 0 2 8 8:8:8:8 yes yes horizontal 8
9 0 0 0 3 9 9:9:9:9 yes yes horizontal 12
#
It is up to the admin level, Libvirt for example, to pin the righ CPU to the right
vCPU, but as we can see without NUMA, chosing separate sockets for CPUs is not easy
without hotplug because without information the code will assign the vCPU and fill
the sockets one after the other.
Note that this is also the default behavior on the LPAR.
Conclusion
==========
This patch, together with the associated KVM patch allows to provide CPU topology
information to the guest.
Currently, only dedicated vCPU and CPU are supported and a NUMA topology can only
be handled using CPU hotplug inside the guest.
Regards,
Pierre
Matthew Rosato (1):
vfio: tolerate migration protocol v1 uapi renames
Pierre Morel (12):
Update linux headers
s390x: topology: CPU topology objects and structures
s390x: topology: implementating Store Topology System Information
s390x: topology: Adding books to CPU topology
s390x: topology: Adding books to STSI
s390x: topology: Adding drawers to CPU topology
s390x: topology: Adding drawers to STSI
s390x: topology: implementing numa for the s390x topology
s390x: kvm: topology: interception of PTF instruction
s390x: topology: resetting the Topology-Change-Report
s390x: CPU topology: CPU topology migration
s390x: topology: activating CPU topology
hw/core/machine-smp.c | 48 +-
hw/core/machine.c | 22 +
hw/s390x/cpu-topology.c | 647 ++++++++++++++++++
hw/s390x/meson.build | 1 +
hw/s390x/s390-virtio-ccw.c | 125 +++-
hw/vfio/common.c | 2 +-
hw/vfio/migration.c | 19 +-
include/hw/boards.h | 8 +
include/hw/s390x/cpu-topology.h | 99 +++
include/hw/s390x/s390-virtio-ccw.h | 6 +
include/hw/s390x/sclp.h | 1 +
.../linux/input-event-codes.h | 4 +-
.../standard-headers/linux/virtio_config.h | 6 +
.../standard-headers/linux/virtio_crypto.h | 82 ++-
linux-headers/asm-arm64/kvm.h | 16 +
linux-headers/asm-generic/mman-common.h | 2 +
linux-headers/asm-mips/mman.h | 2 +
linux-headers/asm-s390/kvm.h | 9 +
linux-headers/linux/kvm.h | 20 +-
linux-headers/linux/psci.h | 4 +
linux-headers/linux/userfaultfd.h | 8 +-
linux-headers/linux/vfio.h | 406 ++++++-----
linux-headers/linux/vhost.h | 7 +
qapi/machine.json | 14 +-
qemu-options.hx | 6 +-
softmmu/vl.c | 6 +
target/s390x/cpu-sysemu.c | 7 +
target/s390x/cpu.h | 51 ++
target/s390x/cpu_models.c | 1 +
target/s390x/cpu_topology.c | 169 +++++
target/s390x/kvm/kvm.c | 96 +++
target/s390x/kvm/kvm_s390x.h | 2 +
target/s390x/meson.build | 1 +
33 files changed, 1651 insertions(+), 246 deletions(-)
create mode 100644 hw/s390x/cpu-topology.c
create mode 100644 include/hw/s390x/cpu-topology.h
create mode 100644 target/s390x/cpu_topology.c
--
2.27.0
Changelog:
- since v6
- Changes on smp args in qemu-options
(Daniel)
- changed comments in machine.jason
(Daniel)
- Added reset
(Janosch)
- since v5
- rebasing on newer QEMU version
- reworked most lines above 80 characters.
- since v4
- Added drawer and books to topology
- Added numa topology
- Added documentation
- since v3
- Added migration
(Thomas)
- Separated STSI instruction from KVM to prepare TCG
(Thomas)
- Take care of endianess to prepare TCG
(Thomas)
- Added comments on STSI CPU container and PFT instruction
(Thomas)
- Moved enabling the instructions as the last patch
(Thomas)
^ permalink raw reply [flat|nested] 42+ messages in thread
* [PATCH v7 01/13] Update linux headers
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
This is a placeholder that pulls in 5.18-rc3 + unmerged kernel changes
required by this item. A proper header sync can be done once the
associated kernel code merges.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
.../linux/input-event-codes.h | 4 +-
.../standard-headers/linux/virtio_config.h | 6 +
.../standard-headers/linux/virtio_crypto.h | 82 +++-
| 16 +
| 2 +
| 2 +
| 9 +
| 20 +-
| 4 +
| 8 +-
| 406 +++++++++---------
| 7 +
12 files changed, 347 insertions(+), 219 deletions(-)
diff --git a/include/standard-headers/linux/input-event-codes.h b/include/standard-headers/linux/input-event-codes.h
index b5e86b40ab..e36c01003a 100644
--- a/include/standard-headers/linux/input-event-codes.h
+++ b/include/standard-headers/linux/input-event-codes.h
@@ -278,7 +278,8 @@
#define KEY_PAUSECD 201
#define KEY_PROG3 202
#define KEY_PROG4 203
-#define KEY_DASHBOARD 204 /* AL Dashboard */
+#define KEY_ALL_APPLICATIONS 204 /* AC Desktop Show All Applications */
+#define KEY_DASHBOARD KEY_ALL_APPLICATIONS
#define KEY_SUSPEND 205
#define KEY_CLOSE 206 /* AC Close */
#define KEY_PLAY 207
@@ -612,6 +613,7 @@
#define KEY_ASSISTANT 0x247 /* AL Context-aware desktop assistant */
#define KEY_KBD_LAYOUT_NEXT 0x248 /* AC Next Keyboard Layout Select */
#define KEY_EMOJI_PICKER 0x249 /* Show/hide emoji picker (HUTRR101) */
+#define KEY_DICTATE 0x24a /* Start or Stop Voice Dictation Session (HUTRR99) */
#define KEY_BRIGHTNESS_MIN 0x250 /* Set Brightness to Minimum */
#define KEY_BRIGHTNESS_MAX 0x251 /* Set Brightness to Maximum */
diff --git a/include/standard-headers/linux/virtio_config.h b/include/standard-headers/linux/virtio_config.h
index 22e3a85f67..7acd8d4abc 100644
--- a/include/standard-headers/linux/virtio_config.h
+++ b/include/standard-headers/linux/virtio_config.h
@@ -80,6 +80,12 @@
/* This feature indicates support for the packed virtqueue layout. */
#define VIRTIO_F_RING_PACKED 34
+/*
+ * Inorder feature indicates that all buffers are used by the device
+ * in the same order in which they have been made available.
+ */
+#define VIRTIO_F_IN_ORDER 35
+
/*
* This feature indicates that memory accesses by the driver and the
* device are ordered in a way described by the platform.
diff --git a/include/standard-headers/linux/virtio_crypto.h b/include/standard-headers/linux/virtio_crypto.h
index 5ff0b4ee59..68066dafb6 100644
--- a/include/standard-headers/linux/virtio_crypto.h
+++ b/include/standard-headers/linux/virtio_crypto.h
@@ -37,6 +37,7 @@
#define VIRTIO_CRYPTO_SERVICE_HASH 1
#define VIRTIO_CRYPTO_SERVICE_MAC 2
#define VIRTIO_CRYPTO_SERVICE_AEAD 3
+#define VIRTIO_CRYPTO_SERVICE_AKCIPHER 4
#define VIRTIO_CRYPTO_OPCODE(service, op) (((service) << 8) | (op))
@@ -57,6 +58,10 @@ struct virtio_crypto_ctrl_header {
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x02)
#define VIRTIO_CRYPTO_AEAD_DESTROY_SESSION \
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x03)
+#define VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x04)
+#define VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x05)
uint32_t opcode;
uint32_t algo;
uint32_t flag;
@@ -180,6 +185,58 @@ struct virtio_crypto_aead_create_session_req {
uint8_t padding[32];
};
+struct virtio_crypto_rsa_session_para {
+#define VIRTIO_CRYPTO_RSA_RAW_PADDING 0
+#define VIRTIO_CRYPTO_RSA_PKCS1_PADDING 1
+ uint32_t padding_algo;
+
+#define VIRTIO_CRYPTO_RSA_NO_HASH 0
+#define VIRTIO_CRYPTO_RSA_MD2 1
+#define VIRTIO_CRYPTO_RSA_MD3 2
+#define VIRTIO_CRYPTO_RSA_MD4 3
+#define VIRTIO_CRYPTO_RSA_MD5 4
+#define VIRTIO_CRYPTO_RSA_SHA1 5
+#define VIRTIO_CRYPTO_RSA_SHA256 6
+#define VIRTIO_CRYPTO_RSA_SHA384 7
+#define VIRTIO_CRYPTO_RSA_SHA512 8
+#define VIRTIO_CRYPTO_RSA_SHA224 9
+ uint32_t hash_algo;
+};
+
+struct virtio_crypto_ecdsa_session_para {
+#define VIRTIO_CRYPTO_CURVE_UNKNOWN 0
+#define VIRTIO_CRYPTO_CURVE_NIST_P192 1
+#define VIRTIO_CRYPTO_CURVE_NIST_P224 2
+#define VIRTIO_CRYPTO_CURVE_NIST_P256 3
+#define VIRTIO_CRYPTO_CURVE_NIST_P384 4
+#define VIRTIO_CRYPTO_CURVE_NIST_P521 5
+ uint32_t curve_id;
+ uint32_t padding;
+};
+
+struct virtio_crypto_akcipher_session_para {
+#define VIRTIO_CRYPTO_NO_AKCIPHER 0
+#define VIRTIO_CRYPTO_AKCIPHER_RSA 1
+#define VIRTIO_CRYPTO_AKCIPHER_DSA 2
+#define VIRTIO_CRYPTO_AKCIPHER_ECDSA 3
+ uint32_t algo;
+
+#define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC 1
+#define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE 2
+ uint32_t keytype;
+ uint32_t keylen;
+
+ union {
+ struct virtio_crypto_rsa_session_para rsa;
+ struct virtio_crypto_ecdsa_session_para ecdsa;
+ } u;
+};
+
+struct virtio_crypto_akcipher_create_session_req {
+ struct virtio_crypto_akcipher_session_para para;
+ uint8_t padding[36];
+};
+
struct virtio_crypto_alg_chain_session_para {
#define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER 1
#define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH 2
@@ -247,6 +304,8 @@ struct virtio_crypto_op_ctrl_req {
mac_create_session;
struct virtio_crypto_aead_create_session_req
aead_create_session;
+ struct virtio_crypto_akcipher_create_session_req
+ akcipher_create_session;
struct virtio_crypto_destroy_session_req
destroy_session;
uint8_t padding[56];
@@ -266,6 +325,14 @@ struct virtio_crypto_op_header {
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x00)
#define VIRTIO_CRYPTO_AEAD_DECRYPT \
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x01)
+#define VIRTIO_CRYPTO_AKCIPHER_ENCRYPT \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x00)
+#define VIRTIO_CRYPTO_AKCIPHER_DECRYPT \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x01)
+#define VIRTIO_CRYPTO_AKCIPHER_SIGN \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x02)
+#define VIRTIO_CRYPTO_AKCIPHER_VERIFY \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x03)
uint32_t opcode;
/* algo should be service-specific algorithms */
uint32_t algo;
@@ -390,6 +457,16 @@ struct virtio_crypto_aead_data_req {
uint8_t padding[32];
};
+struct virtio_crypto_akcipher_para {
+ uint32_t src_data_len;
+ uint32_t dst_data_len;
+};
+
+struct virtio_crypto_akcipher_data_req {
+ struct virtio_crypto_akcipher_para para;
+ uint8_t padding[40];
+};
+
/* The request of the data virtqueue's packet */
struct virtio_crypto_op_data_req {
struct virtio_crypto_op_header header;
@@ -399,6 +476,7 @@ struct virtio_crypto_op_data_req {
struct virtio_crypto_hash_data_req hash_req;
struct virtio_crypto_mac_data_req mac_req;
struct virtio_crypto_aead_data_req aead_req;
+ struct virtio_crypto_akcipher_data_req akcipher_req;
uint8_t padding[48];
} u;
};
@@ -408,6 +486,8 @@ struct virtio_crypto_op_data_req {
#define VIRTIO_CRYPTO_BADMSG 2
#define VIRTIO_CRYPTO_NOTSUPP 3
#define VIRTIO_CRYPTO_INVSESS 4 /* Invalid session id */
+#define VIRTIO_CRYPTO_NOSPC 5 /* no free session ID */
+#define VIRTIO_CRYPTO_KEY_REJECTED 6 /* Signature verification failed */
/* The accelerator hardware is ready */
#define VIRTIO_CRYPTO_S_HW_READY (1 << 0)
@@ -438,7 +518,7 @@ struct virtio_crypto_config {
uint32_t max_cipher_key_len;
/* Maximum length of authenticated key */
uint32_t max_auth_key_len;
- uint32_t reserve;
+ uint32_t akcipher_algo;
/* Maximum size of each crypto request's content */
uint64_t max_size;
};
--git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h
index 3d2ce9912d..5c28a9737a 100644
--- a/linux-headers/asm-arm64/kvm.h
+++ b/linux-headers/asm-arm64/kvm.h
@@ -281,6 +281,11 @@ struct kvm_arm_copy_mte_tags {
#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED 3
#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED (1U << 4)
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3 KVM_REG_ARM_FW_REG(3)
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_AVAIL 0
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_AVAIL 1
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_REQUIRED 2
+
/* SVE registers */
#define KVM_REG_ARM64_SVE (0x15 << KVM_REG_ARM_COPROC_SHIFT)
@@ -362,6 +367,7 @@ struct kvm_arm_copy_mte_tags {
#define KVM_ARM_VCPU_PMU_V3_IRQ 0
#define KVM_ARM_VCPU_PMU_V3_INIT 1
#define KVM_ARM_VCPU_PMU_V3_FILTER 2
+#define KVM_ARM_VCPU_PMU_V3_SET_PMU 3
#define KVM_ARM_VCPU_TIMER_CTRL 1
#define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0
#define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1
@@ -411,6 +417,16 @@ struct kvm_arm_copy_mte_tags {
#define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS
#define KVM_PSCI_RET_DENIED PSCI_RET_DENIED
+/* arm64-specific kvm_run::system_event flags */
+/*
+ * Reset caused by a PSCI v1.1 SYSTEM_RESET2 call.
+ * Valid only when the system event has a type of KVM_SYSTEM_EVENT_RESET.
+ */
+#define KVM_SYSTEM_EVENT_RESET_FLAG_PSCI_RESET2 (1ULL << 0)
+
+/* run->fail_entry.hardware_entry_failure_reason codes. */
+#define KVM_EXIT_FAIL_ENTRY_CPU_UNSUPPORTED (1ULL << 0)
+
#endif
#endif /* __ARM_KVM_H__ */
--git a/linux-headers/asm-generic/mman-common.h b/linux-headers/asm-generic/mman-common.h
index 1567a3294c..6c1aa92a92 100644
--- a/linux-headers/asm-generic/mman-common.h
+++ b/linux-headers/asm-generic/mman-common.h
@@ -75,6 +75,8 @@
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
+#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
+
/* compatibility flags */
#define MAP_FILE 0
--git a/linux-headers/asm-mips/mman.h b/linux-headers/asm-mips/mman.h
index 40b210c65a..1be428663c 100644
--- a/linux-headers/asm-mips/mman.h
+++ b/linux-headers/asm-mips/mman.h
@@ -101,6 +101,8 @@
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
+#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
+
/* compatibility flags */
#define MAP_FILE 0
--git a/linux-headers/asm-s390/kvm.h b/linux-headers/asm-s390/kvm.h
index f053b8304a..b83747876f 100644
--- a/linux-headers/asm-s390/kvm.h
+++ b/linux-headers/asm-s390/kvm.h
@@ -74,6 +74,7 @@ struct kvm_s390_io_adapter_req {
#define KVM_S390_VM_CRYPTO 2
#define KVM_S390_VM_CPU_MODEL 3
#define KVM_S390_VM_MIGRATION 4
+#define KVM_S390_VM_CPU_TOPOLOGY 5
/* kvm attributes for mem_ctrl */
#define KVM_S390_VM_MEM_ENABLE_CMMA 0
@@ -171,6 +172,14 @@ struct kvm_s390_vm_cpu_subfunc {
#define KVM_S390_VM_MIGRATION_START 1
#define KVM_S390_VM_MIGRATION_STATUS 2
+/* kvm attributes for cpu topology */
+#define KVM_S390_VM_CPU_TOPO_MTR_CLEAR 0
+#define KVM_S390_VM_CPU_TOPO_MTR_SET 1
+
+struct kvm_s390_cpu_topology {
+ __u16 mtcr;
+};
+
/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
/* general purpose regs for s390 */
--git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index d232feaae9..f7191a8e34 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -562,9 +562,12 @@ struct kvm_s390_mem_op {
__u32 op; /* type of operation */
__u64 buf; /* buffer in userspace */
union {
- __u8 ar; /* the access register number */
+ struct {
+ __u8 ar; /* the access register number */
+ __u8 key; /* access key, ignored if flag unset */
+ };
__u32 sida_offset; /* offset into the sida */
- __u8 reserved[32]; /* should be set to 0 */
+ __u8 reserved[32]; /* ignored */
};
};
/* types for kvm_s390_mem_op->op */
@@ -572,9 +575,12 @@ struct kvm_s390_mem_op {
#define KVM_S390_MEMOP_LOGICAL_WRITE 1
#define KVM_S390_MEMOP_SIDA_READ 2
#define KVM_S390_MEMOP_SIDA_WRITE 3
+#define KVM_S390_MEMOP_ABSOLUTE_READ 4
+#define KVM_S390_MEMOP_ABSOLUTE_WRITE 5
/* flags for kvm_s390_mem_op->flags */
#define KVM_S390_MEMOP_F_CHECK_ONLY (1ULL << 0)
#define KVM_S390_MEMOP_F_INJECT_EXCEPTION (1ULL << 1)
+#define KVM_S390_MEMOP_F_SKEY_PROTECTION (1ULL << 2)
/* for KVM_INTERRUPT */
struct kvm_interrupt {
@@ -1134,6 +1140,11 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_VM_GPA_BITS 207
#define KVM_CAP_XSAVE2 208
#define KVM_CAP_SYS_ATTRIBUTES 209
+#define KVM_CAP_PPC_AIL_MODE_3 210
+#define KVM_CAP_S390_MEM_OP_EXTENSION 211
+#define KVM_CAP_PMU_CAPABILITY 212
+#define KVM_CAP_DISABLE_QUIRKS2 213
+#define KVM_CAP_S390_CPU_TOPOLOGY 214
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1624,9 +1635,6 @@ struct kvm_enc_region {
#define KVM_S390_NORMAL_RESET _IO(KVMIO, 0xc3)
#define KVM_S390_CLEAR_RESET _IO(KVMIO, 0xc4)
-/* Available with KVM_CAP_XSAVE2 */
-#define KVM_GET_XSAVE2 _IOR(KVMIO, 0xcf, struct kvm_xsave)
-
struct kvm_s390_pv_sec_parm {
__u64 origin;
__u64 length;
@@ -1973,6 +1981,8 @@ struct kvm_dirty_gfn {
#define KVM_BUS_LOCK_DETECTION_OFF (1 << 0)
#define KVM_BUS_LOCK_DETECTION_EXIT (1 << 1)
+#define KVM_PMU_CAP_DISABLE (1 << 0)
+
/**
* struct kvm_stats_header - Header of per vm/vcpu binary statistics data.
* @flags: Some extra information for header, always 0 for now.
--git a/linux-headers/linux/psci.h b/linux-headers/linux/psci.h
index a6772d508b..213b2a0f70 100644
--- a/linux-headers/linux/psci.h
+++ b/linux-headers/linux/psci.h
@@ -82,6 +82,10 @@
#define PSCI_0_2_TOS_UP_NO_MIGRATE 1
#define PSCI_0_2_TOS_MP 2
+/* PSCI v1.1 reset type encoding for SYSTEM_RESET2 */
+#define PSCI_1_1_RESET_TYPE_SYSTEM_WARM_RESET 0
+#define PSCI_1_1_RESET_TYPE_VENDOR_START 0x80000000U
+
/* PSCI version decoding (independent of PSCI version) */
#define PSCI_VERSION_MAJOR_SHIFT 16
#define PSCI_VERSION_MINOR_MASK \
--git a/linux-headers/linux/userfaultfd.h b/linux-headers/linux/userfaultfd.h
index 8479af5f4c..769b8379e4 100644
--- a/linux-headers/linux/userfaultfd.h
+++ b/linux-headers/linux/userfaultfd.h
@@ -32,7 +32,8 @@
UFFD_FEATURE_SIGBUS | \
UFFD_FEATURE_THREAD_ID | \
UFFD_FEATURE_MINOR_HUGETLBFS | \
- UFFD_FEATURE_MINOR_SHMEM)
+ UFFD_FEATURE_MINOR_SHMEM | \
+ UFFD_FEATURE_EXACT_ADDRESS)
#define UFFD_API_IOCTLS \
((__u64)1 << _UFFDIO_REGISTER | \
(__u64)1 << _UFFDIO_UNREGISTER | \
@@ -189,6 +190,10 @@ struct uffdio_api {
*
* UFFD_FEATURE_MINOR_SHMEM indicates the same support as
* UFFD_FEATURE_MINOR_HUGETLBFS, but for shmem-backed pages instead.
+ *
+ * UFFD_FEATURE_EXACT_ADDRESS indicates that the exact address of page
+ * faults would be provided and the offset within the page would not be
+ * masked.
*/
#define UFFD_FEATURE_PAGEFAULT_FLAG_WP (1<<0)
#define UFFD_FEATURE_EVENT_FORK (1<<1)
@@ -201,6 +206,7 @@ struct uffdio_api {
#define UFFD_FEATURE_THREAD_ID (1<<8)
#define UFFD_FEATURE_MINOR_HUGETLBFS (1<<9)
#define UFFD_FEATURE_MINOR_SHMEM (1<<10)
+#define UFFD_FEATURE_EXACT_ADDRESS (1<<11)
__u64 features;
__u64 ioctls;
--git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index e680594f27..e9f7795c39 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -323,7 +323,7 @@ struct vfio_region_info_cap_type {
#define VFIO_REGION_TYPE_PCI_VENDOR_MASK (0xffff)
#define VFIO_REGION_TYPE_GFX (1)
#define VFIO_REGION_TYPE_CCW (2)
-#define VFIO_REGION_TYPE_MIGRATION (3)
+#define VFIO_REGION_TYPE_MIGRATION_DEPRECATED (3)
/* sub-types for VFIO_REGION_TYPE_PCI_* */
@@ -405,225 +405,29 @@ struct vfio_region_gfx_edid {
#define VFIO_REGION_SUBTYPE_CCW_CRW (3)
/* sub-types for VFIO_REGION_TYPE_MIGRATION */
-#define VFIO_REGION_SUBTYPE_MIGRATION (1)
-
-/*
- * The structure vfio_device_migration_info is placed at the 0th offset of
- * the VFIO_REGION_SUBTYPE_MIGRATION region to get and set VFIO device related
- * migration information. Field accesses from this structure are only supported
- * at their native width and alignment. Otherwise, the result is undefined and
- * vendor drivers should return an error.
- *
- * device_state: (read/write)
- * - The user application writes to this field to inform the vendor driver
- * about the device state to be transitioned to.
- * - The vendor driver should take the necessary actions to change the
- * device state. After successful transition to a given state, the
- * vendor driver should return success on write(device_state, state)
- * system call. If the device state transition fails, the vendor driver
- * should return an appropriate -errno for the fault condition.
- * - On the user application side, if the device state transition fails,
- * that is, if write(device_state, state) returns an error, read
- * device_state again to determine the current state of the device from
- * the vendor driver.
- * - The vendor driver should return previous state of the device unless
- * the vendor driver has encountered an internal error, in which case
- * the vendor driver may report the device_state VFIO_DEVICE_STATE_ERROR.
- * - The user application must use the device reset ioctl to recover the
- * device from VFIO_DEVICE_STATE_ERROR state. If the device is
- * indicated to be in a valid device state by reading device_state, the
- * user application may attempt to transition the device to any valid
- * state reachable from the current state or terminate itself.
- *
- * device_state consists of 3 bits:
- * - If bit 0 is set, it indicates the _RUNNING state. If bit 0 is clear,
- * it indicates the _STOP state. When the device state is changed to
- * _STOP, driver should stop the device before write() returns.
- * - If bit 1 is set, it indicates the _SAVING state, which means that the
- * driver should start gathering device state information that will be
- * provided to the VFIO user application to save the device's state.
- * - If bit 2 is set, it indicates the _RESUMING state, which means that
- * the driver should prepare to resume the device. Data provided through
- * the migration region should be used to resume the device.
- * Bits 3 - 31 are reserved for future use. To preserve them, the user
- * application should perform a read-modify-write operation on this
- * field when modifying the specified bits.
- *
- * +------- _RESUMING
- * |+------ _SAVING
- * ||+----- _RUNNING
- * |||
- * 000b => Device Stopped, not saving or resuming
- * 001b => Device running, which is the default state
- * 010b => Stop the device & save the device state, stop-and-copy state
- * 011b => Device running and save the device state, pre-copy state
- * 100b => Device stopped and the device state is resuming
- * 101b => Invalid state
- * 110b => Error state
- * 111b => Invalid state
- *
- * State transitions:
- *
- * _RESUMING _RUNNING Pre-copy Stop-and-copy _STOP
- * (100b) (001b) (011b) (010b) (000b)
- * 0. Running or default state
- * |
- *
- * 1. Normal Shutdown (optional)
- * |------------------------------------->|
- *
- * 2. Save the state or suspend
- * |------------------------->|---------->|
- *
- * 3. Save the state during live migration
- * |----------->|------------>|---------->|
- *
- * 4. Resuming
- * |<---------|
- *
- * 5. Resumed
- * |--------->|
- *
- * 0. Default state of VFIO device is _RUNNING when the user application starts.
- * 1. During normal shutdown of the user application, the user application may
- * optionally change the VFIO device state from _RUNNING to _STOP. This
- * transition is optional. The vendor driver must support this transition but
- * must not require it.
- * 2. When the user application saves state or suspends the application, the
- * device state transitions from _RUNNING to stop-and-copy and then to _STOP.
- * On state transition from _RUNNING to stop-and-copy, driver must stop the
- * device, save the device state and send it to the application through the
- * migration region. The sequence to be followed for such transition is given
- * below.
- * 3. In live migration of user application, the state transitions from _RUNNING
- * to pre-copy, to stop-and-copy, and to _STOP.
- * On state transition from _RUNNING to pre-copy, the driver should start
- * gathering the device state while the application is still running and send
- * the device state data to application through the migration region.
- * On state transition from pre-copy to stop-and-copy, the driver must stop
- * the device, save the device state and send it to the user application
- * through the migration region.
- * Vendor drivers must support the pre-copy state even for implementations
- * where no data is provided to the user before the stop-and-copy state. The
- * user must not be required to consume all migration data before the device
- * transitions to a new state, including the stop-and-copy state.
- * The sequence to be followed for above two transitions is given below.
- * 4. To start the resuming phase, the device state should be transitioned from
- * the _RUNNING to the _RESUMING state.
- * In the _RESUMING state, the driver should use the device state data
- * received through the migration region to resume the device.
- * 5. After providing saved device data to the driver, the application should
- * change the state from _RESUMING to _RUNNING.
- *
- * reserved:
- * Reads on this field return zero and writes are ignored.
- *
- * pending_bytes: (read only)
- * The number of pending bytes still to be migrated from the vendor driver.
- *
- * data_offset: (read only)
- * The user application should read data_offset field from the migration
- * region. The user application should read the device data from this
- * offset within the migration region during the _SAVING state or write
- * the device data during the _RESUMING state. See below for details of
- * sequence to be followed.
- *
- * data_size: (read/write)
- * The user application should read data_size to get the size in bytes of
- * the data copied in the migration region during the _SAVING state and
- * write the size in bytes of the data copied in the migration region
- * during the _RESUMING state.
- *
- * The format of the migration region is as follows:
- * ------------------------------------------------------------------
- * |vfio_device_migration_info| data section |
- * | | /////////////////////////////// |
- * ------------------------------------------------------------------
- * ^ ^
- * offset 0-trapped part data_offset
- *
- * The structure vfio_device_migration_info is always followed by the data
- * section in the region, so data_offset will always be nonzero. The offset
- * from where the data is copied is decided by the kernel driver. The data
- * section can be trapped, mmapped, or partitioned, depending on how the kernel
- * driver defines the data section. The data section partition can be defined
- * as mapped by the sparse mmap capability. If mmapped, data_offset must be
- * page aligned, whereas initial section which contains the
- * vfio_device_migration_info structure, might not end at the offset, which is
- * page aligned. The user is not required to access through mmap regardless
- * of the capabilities of the region mmap.
- * The vendor driver should determine whether and how to partition the data
- * section. The vendor driver should return data_offset accordingly.
- *
- * The sequence to be followed while in pre-copy state and stop-and-copy state
- * is as follows:
- * a. Read pending_bytes, indicating the start of a new iteration to get device
- * data. Repeated read on pending_bytes at this stage should have no side
- * effects.
- * If pending_bytes == 0, the user application should not iterate to get data
- * for that device.
- * If pending_bytes > 0, perform the following steps.
- * b. Read data_offset, indicating that the vendor driver should make data
- * available through the data section. The vendor driver should return this
- * read operation only after data is available from (region + data_offset)
- * to (region + data_offset + data_size).
- * c. Read data_size, which is the amount of data in bytes available through
- * the migration region.
- * Read on data_offset and data_size should return the offset and size of
- * the current buffer if the user application reads data_offset and
- * data_size more than once here.
- * d. Read data_size bytes of data from (region + data_offset) from the
- * migration region.
- * e. Process the data.
- * f. Read pending_bytes, which indicates that the data from the previous
- * iteration has been read. If pending_bytes > 0, go to step b.
- *
- * The user application can transition from the _SAVING|_RUNNING
- * (pre-copy state) to the _SAVING (stop-and-copy) state regardless of the
- * number of pending bytes. The user application should iterate in _SAVING
- * (stop-and-copy) until pending_bytes is 0.
- *
- * The sequence to be followed while _RESUMING device state is as follows:
- * While data for this device is available, repeat the following steps:
- * a. Read data_offset from where the user application should write data.
- * b. Write migration data starting at the migration region + data_offset for
- * the length determined by data_size from the migration source.
- * c. Write data_size, which indicates to the vendor driver that data is
- * written in the migration region. Vendor driver must return this write
- * operations on consuming data. Vendor driver should apply the
- * user-provided migration region data to the device resume state.
- *
- * If an error occurs during the above sequences, the vendor driver can return
- * an error code for next read() or write() operation, which will terminate the
- * loop. The user application should then take the next necessary action, for
- * example, failing migration or terminating the user application.
- *
- * For the user application, data is opaque. The user application should write
- * data in the same order as the data is received and the data should be of
- * same transaction size at the source.
- */
+#define VFIO_REGION_SUBTYPE_MIGRATION_DEPRECATED (1)
struct vfio_device_migration_info {
__u32 device_state; /* VFIO device state */
-#define VFIO_DEVICE_STATE_STOP (0)
-#define VFIO_DEVICE_STATE_RUNNING (1 << 0)
-#define VFIO_DEVICE_STATE_SAVING (1 << 1)
-#define VFIO_DEVICE_STATE_RESUMING (1 << 2)
-#define VFIO_DEVICE_STATE_MASK (VFIO_DEVICE_STATE_RUNNING | \
- VFIO_DEVICE_STATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING)
+#define VFIO_DEVICE_STATE_V1_STOP (0)
+#define VFIO_DEVICE_STATE_V1_RUNNING (1 << 0)
+#define VFIO_DEVICE_STATE_V1_SAVING (1 << 1)
+#define VFIO_DEVICE_STATE_V1_RESUMING (1 << 2)
+#define VFIO_DEVICE_STATE_MASK (VFIO_DEVICE_STATE_V1_RUNNING | \
+ VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING)
#define VFIO_DEVICE_STATE_VALID(state) \
- (state & VFIO_DEVICE_STATE_RESUMING ? \
- (state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_RESUMING : 1)
+ (state & VFIO_DEVICE_STATE_V1_RESUMING ? \
+ (state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_V1_RESUMING : 1)
#define VFIO_DEVICE_STATE_IS_ERROR(state) \
- ((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING))
+ ((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING))
#define VFIO_DEVICE_STATE_SET_ERROR(state) \
- ((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_SATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING)
+ ((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING)
__u32 reserved;
__u64 pending_bytes;
@@ -1002,6 +806,186 @@ struct vfio_device_feature {
*/
#define VFIO_DEVICE_FEATURE_PCI_VF_TOKEN (0)
+/*
+ * Indicates the device can support the migration API through
+ * VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE. If this GET succeeds, the RUNNING and
+ * ERROR states are always supported. Support for additional states is
+ * indicated via the flags field; at least VFIO_MIGRATION_STOP_COPY must be
+ * set.
+ *
+ * VFIO_MIGRATION_STOP_COPY means that STOP, STOP_COPY and
+ * RESUMING are supported.
+ *
+ * VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P means that RUNNING_P2P
+ * is supported in addition to the STOP_COPY states.
+ *
+ * Other combinations of flags have behavior to be defined in the future.
+ */
+struct vfio_device_feature_migration {
+ __aligned_u64 flags;
+#define VFIO_MIGRATION_STOP_COPY (1 << 0)
+#define VFIO_MIGRATION_P2P (1 << 1)
+};
+#define VFIO_DEVICE_FEATURE_MIGRATION 1
+
+/*
+ * Upon VFIO_DEVICE_FEATURE_SET, execute a migration state change on the VFIO
+ * device. The new state is supplied in device_state, see enum
+ * vfio_device_mig_state for details
+ *
+ * The kernel migration driver must fully transition the device to the new state
+ * value before the operation returns to the user.
+ *
+ * The kernel migration driver must not generate asynchronous device state
+ * transitions outside of manipulation by the user or the VFIO_DEVICE_RESET
+ * ioctl as described above.
+ *
+ * If this function fails then current device_state may be the original
+ * operating state or some other state along the combination transition path.
+ * The user can then decide if it should execute a VFIO_DEVICE_RESET, attempt
+ * to return to the original state, or attempt to return to some other state
+ * such as RUNNING or STOP.
+ *
+ * If the new_state starts a new data transfer session then the FD associated
+ * with that session is returned in data_fd. The user is responsible to close
+ * this FD when it is finished. The user must consider the migration data stream
+ * carried over the FD to be opaque and must preserve the byte order of the
+ * stream. The user is not required to preserve buffer segmentation when writing
+ * the data stream during the RESUMING operation.
+ *
+ * Upon VFIO_DEVICE_FEATURE_GET, get the current migration state of the VFIO
+ * device, data_fd will be -1.
+ */
+struct vfio_device_feature_mig_state {
+ __u32 device_state; /* From enum vfio_device_mig_state */
+ __s32 data_fd;
+};
+#define VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE 2
+
+/*
+ * The device migration Finite State Machine is described by the enum
+ * vfio_device_mig_state. Some of the FSM arcs will create a migration data
+ * transfer session by returning a FD, in this case the migration data will
+ * flow over the FD using read() and write() as discussed below.
+ *
+ * There are 5 states to support VFIO_MIGRATION_STOP_COPY:
+ * RUNNING - The device is running normally
+ * STOP - The device does not change the internal or external state
+ * STOP_COPY - The device internal state can be read out
+ * RESUMING - The device is stopped and is loading a new internal state
+ * ERROR - The device has failed and must be reset
+ *
+ * And 1 optional state to support VFIO_MIGRATION_P2P:
+ * RUNNING_P2P - RUNNING, except the device cannot do peer to peer DMA
+ *
+ * The FSM takes actions on the arcs between FSM states. The driver implements
+ * the following behavior for the FSM arcs:
+ *
+ * RUNNING_P2P -> STOP
+ * STOP_COPY -> STOP
+ * While in STOP the device must stop the operation of the device. The device
+ * must not generate interrupts, DMA, or any other change to external state.
+ * It must not change its internal state. When stopped the device and kernel
+ * migration driver must accept and respond to interaction to support external
+ * subsystems in the STOP state, for example PCI MSI-X and PCI config space.
+ * Failure by the user to restrict device access while in STOP must not result
+ * in error conditions outside the user context (ex. host system faults).
+ *
+ * The STOP_COPY arc will terminate a data transfer session.
+ *
+ * RESUMING -> STOP
+ * Leaving RESUMING terminates a data transfer session and indicates the
+ * device should complete processing of the data delivered by write(). The
+ * kernel migration driver should complete the incorporation of data written
+ * to the data transfer FD into the device internal state and perform
+ * final validity and consistency checking of the new device state. If the
+ * user provided data is found to be incomplete, inconsistent, or otherwise
+ * invalid, the migration driver must fail the SET_STATE ioctl and
+ * optionally go to the ERROR state as described below.
+ *
+ * While in STOP the device has the same behavior as other STOP states
+ * described above.
+ *
+ * To abort a RESUMING session the device must be reset.
+ *
+ * RUNNING_P2P -> RUNNING
+ * While in RUNNING the device is fully operational, the device may generate
+ * interrupts, DMA, respond to MMIO, all vfio device regions are functional,
+ * and the device may advance its internal state.
+ *
+ * RUNNING -> RUNNING_P2P
+ * STOP -> RUNNING_P2P
+ * While in RUNNING_P2P the device is partially running in the P2P quiescent
+ * state defined below.
+ *
+ * STOP -> STOP_COPY
+ * This arc begin the process of saving the device state and will return a
+ * new data_fd.
+ *
+ * While in the STOP_COPY state the device has the same behavior as STOP
+ * with the addition that the data transfers session continues to stream the
+ * migration state. End of stream on the FD indicates the entire device
+ * state has been transferred.
+ *
+ * The user should take steps to restrict access to vfio device regions while
+ * the device is in STOP_COPY or risk corruption of the device migration data
+ * stream.
+ *
+ * STOP -> RESUMING
+ * Entering the RESUMING state starts a process of restoring the device state
+ * and will return a new data_fd. The data stream fed into the data_fd should
+ * be taken from the data transfer output of a single FD during saving from
+ * a compatible device. The migration driver may alter/reset the internal
+ * device state for this arc if required to prepare the device to receive the
+ * migration data.
+ *
+ * any -> ERROR
+ * ERROR cannot be specified as a device state, however any transition request
+ * can be failed with an errno return and may then move the device_state into
+ * ERROR. In this case the device was unable to execute the requested arc and
+ * was also unable to restore the device to any valid device_state.
+ * To recover from ERROR VFIO_DEVICE_RESET must be used to return the
+ * device_state back to RUNNING.
+ *
+ * The optional peer to peer (P2P) quiescent state is intended to be a quiescent
+ * state for the device for the purposes of managing multiple devices within a
+ * user context where peer-to-peer DMA between devices may be active. The
+ * RUNNING_P2P states must prevent the device from initiating
+ * any new P2P DMA transactions. If the device can identify P2P transactions
+ * then it can stop only P2P DMA, otherwise it must stop all DMA. The migration
+ * driver must complete any such outstanding operations prior to completing the
+ * FSM arc into a P2P state. For the purpose of specification the states
+ * behave as though the device was fully running if not supported. Like while in
+ * STOP or STOP_COPY the user must not touch the device, otherwise the state
+ * can be exited.
+ *
+ * The remaining possible transitions are interpreted as combinations of the
+ * above FSM arcs. As there are multiple paths through the FSM arcs the path
+ * should be selected based on the following rules:
+ * - Select the shortest path.
+ * Refer to vfio_mig_get_next_state() for the result of the algorithm.
+ *
+ * The automatic transit through the FSM arcs that make up the combination
+ * transition is invisible to the user. When working with combination arcs the
+ * user may see any step along the path in the device_state if SET_STATE
+ * fails. When handling these types of errors users should anticipate future
+ * revisions of this protocol using new states and those states becoming
+ * visible in this case.
+ *
+ * The optional states cannot be used with SET_STATE if the device does not
+ * support them. The user can discover if these states are supported by using
+ * VFIO_DEVICE_FEATURE_MIGRATION. By using combination transitions the user can
+ * avoid knowing about these optional states if the kernel driver supports them.
+ */
+enum vfio_device_mig_state {
+ VFIO_DEVICE_STATE_ERROR = 0,
+ VFIO_DEVICE_STATE_STOP = 1,
+ VFIO_DEVICE_STATE_RUNNING = 2,
+ VFIO_DEVICE_STATE_STOP_COPY = 3,
+ VFIO_DEVICE_STATE_RESUMING = 4,
+ VFIO_DEVICE_STATE_RUNNING_P2P = 5,
+};
+
/* -------- API for Type1 VFIO IOMMU -------- */
/**
--git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -150,4 +150,11 @@
/* Get the valid iova range */
#define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \
struct vhost_vdpa_iova_range)
+
+/* Get the config size */
+#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x79, __u32)
+
+/* Get the count of all virtqueues */
+#define VHOST_VDPA_GET_VQS_COUNT _IOR(VHOST_VIRTIO, 0x80, __u32)
+
#endif
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 01/13] Update linux headers
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
This is a placeholder that pulls in 5.18-rc3 + unmerged kernel changes
required by this item. A proper header sync can be done once the
associated kernel code merges.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
.../linux/input-event-codes.h | 4 +-
.../standard-headers/linux/virtio_config.h | 6 +
.../standard-headers/linux/virtio_crypto.h | 82 +++-
| 16 +
| 2 +
| 2 +
| 9 +
| 20 +-
| 4 +
| 8 +-
| 406 +++++++++---------
| 7 +
12 files changed, 347 insertions(+), 219 deletions(-)
diff --git a/include/standard-headers/linux/input-event-codes.h b/include/standard-headers/linux/input-event-codes.h
index b5e86b40ab..e36c01003a 100644
--- a/include/standard-headers/linux/input-event-codes.h
+++ b/include/standard-headers/linux/input-event-codes.h
@@ -278,7 +278,8 @@
#define KEY_PAUSECD 201
#define KEY_PROG3 202
#define KEY_PROG4 203
-#define KEY_DASHBOARD 204 /* AL Dashboard */
+#define KEY_ALL_APPLICATIONS 204 /* AC Desktop Show All Applications */
+#define KEY_DASHBOARD KEY_ALL_APPLICATIONS
#define KEY_SUSPEND 205
#define KEY_CLOSE 206 /* AC Close */
#define KEY_PLAY 207
@@ -612,6 +613,7 @@
#define KEY_ASSISTANT 0x247 /* AL Context-aware desktop assistant */
#define KEY_KBD_LAYOUT_NEXT 0x248 /* AC Next Keyboard Layout Select */
#define KEY_EMOJI_PICKER 0x249 /* Show/hide emoji picker (HUTRR101) */
+#define KEY_DICTATE 0x24a /* Start or Stop Voice Dictation Session (HUTRR99) */
#define KEY_BRIGHTNESS_MIN 0x250 /* Set Brightness to Minimum */
#define KEY_BRIGHTNESS_MAX 0x251 /* Set Brightness to Maximum */
diff --git a/include/standard-headers/linux/virtio_config.h b/include/standard-headers/linux/virtio_config.h
index 22e3a85f67..7acd8d4abc 100644
--- a/include/standard-headers/linux/virtio_config.h
+++ b/include/standard-headers/linux/virtio_config.h
@@ -80,6 +80,12 @@
/* This feature indicates support for the packed virtqueue layout. */
#define VIRTIO_F_RING_PACKED 34
+/*
+ * Inorder feature indicates that all buffers are used by the device
+ * in the same order in which they have been made available.
+ */
+#define VIRTIO_F_IN_ORDER 35
+
/*
* This feature indicates that memory accesses by the driver and the
* device are ordered in a way described by the platform.
diff --git a/include/standard-headers/linux/virtio_crypto.h b/include/standard-headers/linux/virtio_crypto.h
index 5ff0b4ee59..68066dafb6 100644
--- a/include/standard-headers/linux/virtio_crypto.h
+++ b/include/standard-headers/linux/virtio_crypto.h
@@ -37,6 +37,7 @@
#define VIRTIO_CRYPTO_SERVICE_HASH 1
#define VIRTIO_CRYPTO_SERVICE_MAC 2
#define VIRTIO_CRYPTO_SERVICE_AEAD 3
+#define VIRTIO_CRYPTO_SERVICE_AKCIPHER 4
#define VIRTIO_CRYPTO_OPCODE(service, op) (((service) << 8) | (op))
@@ -57,6 +58,10 @@ struct virtio_crypto_ctrl_header {
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x02)
#define VIRTIO_CRYPTO_AEAD_DESTROY_SESSION \
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x03)
+#define VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x04)
+#define VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x05)
uint32_t opcode;
uint32_t algo;
uint32_t flag;
@@ -180,6 +185,58 @@ struct virtio_crypto_aead_create_session_req {
uint8_t padding[32];
};
+struct virtio_crypto_rsa_session_para {
+#define VIRTIO_CRYPTO_RSA_RAW_PADDING 0
+#define VIRTIO_CRYPTO_RSA_PKCS1_PADDING 1
+ uint32_t padding_algo;
+
+#define VIRTIO_CRYPTO_RSA_NO_HASH 0
+#define VIRTIO_CRYPTO_RSA_MD2 1
+#define VIRTIO_CRYPTO_RSA_MD3 2
+#define VIRTIO_CRYPTO_RSA_MD4 3
+#define VIRTIO_CRYPTO_RSA_MD5 4
+#define VIRTIO_CRYPTO_RSA_SHA1 5
+#define VIRTIO_CRYPTO_RSA_SHA256 6
+#define VIRTIO_CRYPTO_RSA_SHA384 7
+#define VIRTIO_CRYPTO_RSA_SHA512 8
+#define VIRTIO_CRYPTO_RSA_SHA224 9
+ uint32_t hash_algo;
+};
+
+struct virtio_crypto_ecdsa_session_para {
+#define VIRTIO_CRYPTO_CURVE_UNKNOWN 0
+#define VIRTIO_CRYPTO_CURVE_NIST_P192 1
+#define VIRTIO_CRYPTO_CURVE_NIST_P224 2
+#define VIRTIO_CRYPTO_CURVE_NIST_P256 3
+#define VIRTIO_CRYPTO_CURVE_NIST_P384 4
+#define VIRTIO_CRYPTO_CURVE_NIST_P521 5
+ uint32_t curve_id;
+ uint32_t padding;
+};
+
+struct virtio_crypto_akcipher_session_para {
+#define VIRTIO_CRYPTO_NO_AKCIPHER 0
+#define VIRTIO_CRYPTO_AKCIPHER_RSA 1
+#define VIRTIO_CRYPTO_AKCIPHER_DSA 2
+#define VIRTIO_CRYPTO_AKCIPHER_ECDSA 3
+ uint32_t algo;
+
+#define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC 1
+#define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE 2
+ uint32_t keytype;
+ uint32_t keylen;
+
+ union {
+ struct virtio_crypto_rsa_session_para rsa;
+ struct virtio_crypto_ecdsa_session_para ecdsa;
+ } u;
+};
+
+struct virtio_crypto_akcipher_create_session_req {
+ struct virtio_crypto_akcipher_session_para para;
+ uint8_t padding[36];
+};
+
struct virtio_crypto_alg_chain_session_para {
#define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER 1
#define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH 2
@@ -247,6 +304,8 @@ struct virtio_crypto_op_ctrl_req {
mac_create_session;
struct virtio_crypto_aead_create_session_req
aead_create_session;
+ struct virtio_crypto_akcipher_create_session_req
+ akcipher_create_session;
struct virtio_crypto_destroy_session_req
destroy_session;
uint8_t padding[56];
@@ -266,6 +325,14 @@ struct virtio_crypto_op_header {
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x00)
#define VIRTIO_CRYPTO_AEAD_DECRYPT \
VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x01)
+#define VIRTIO_CRYPTO_AKCIPHER_ENCRYPT \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x00)
+#define VIRTIO_CRYPTO_AKCIPHER_DECRYPT \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x01)
+#define VIRTIO_CRYPTO_AKCIPHER_SIGN \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x02)
+#define VIRTIO_CRYPTO_AKCIPHER_VERIFY \
+ VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x03)
uint32_t opcode;
/* algo should be service-specific algorithms */
uint32_t algo;
@@ -390,6 +457,16 @@ struct virtio_crypto_aead_data_req {
uint8_t padding[32];
};
+struct virtio_crypto_akcipher_para {
+ uint32_t src_data_len;
+ uint32_t dst_data_len;
+};
+
+struct virtio_crypto_akcipher_data_req {
+ struct virtio_crypto_akcipher_para para;
+ uint8_t padding[40];
+};
+
/* The request of the data virtqueue's packet */
struct virtio_crypto_op_data_req {
struct virtio_crypto_op_header header;
@@ -399,6 +476,7 @@ struct virtio_crypto_op_data_req {
struct virtio_crypto_hash_data_req hash_req;
struct virtio_crypto_mac_data_req mac_req;
struct virtio_crypto_aead_data_req aead_req;
+ struct virtio_crypto_akcipher_data_req akcipher_req;
uint8_t padding[48];
} u;
};
@@ -408,6 +486,8 @@ struct virtio_crypto_op_data_req {
#define VIRTIO_CRYPTO_BADMSG 2
#define VIRTIO_CRYPTO_NOTSUPP 3
#define VIRTIO_CRYPTO_INVSESS 4 /* Invalid session id */
+#define VIRTIO_CRYPTO_NOSPC 5 /* no free session ID */
+#define VIRTIO_CRYPTO_KEY_REJECTED 6 /* Signature verification failed */
/* The accelerator hardware is ready */
#define VIRTIO_CRYPTO_S_HW_READY (1 << 0)
@@ -438,7 +518,7 @@ struct virtio_crypto_config {
uint32_t max_cipher_key_len;
/* Maximum length of authenticated key */
uint32_t max_auth_key_len;
- uint32_t reserve;
+ uint32_t akcipher_algo;
/* Maximum size of each crypto request's content */
uint64_t max_size;
};
--git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h
index 3d2ce9912d..5c28a9737a 100644
--- a/linux-headers/asm-arm64/kvm.h
+++ b/linux-headers/asm-arm64/kvm.h
@@ -281,6 +281,11 @@ struct kvm_arm_copy_mte_tags {
#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED 3
#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED (1U << 4)
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3 KVM_REG_ARM_FW_REG(3)
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_AVAIL 0
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_AVAIL 1
+#define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_3_NOT_REQUIRED 2
+
/* SVE registers */
#define KVM_REG_ARM64_SVE (0x15 << KVM_REG_ARM_COPROC_SHIFT)
@@ -362,6 +367,7 @@ struct kvm_arm_copy_mte_tags {
#define KVM_ARM_VCPU_PMU_V3_IRQ 0
#define KVM_ARM_VCPU_PMU_V3_INIT 1
#define KVM_ARM_VCPU_PMU_V3_FILTER 2
+#define KVM_ARM_VCPU_PMU_V3_SET_PMU 3
#define KVM_ARM_VCPU_TIMER_CTRL 1
#define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0
#define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1
@@ -411,6 +417,16 @@ struct kvm_arm_copy_mte_tags {
#define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS
#define KVM_PSCI_RET_DENIED PSCI_RET_DENIED
+/* arm64-specific kvm_run::system_event flags */
+/*
+ * Reset caused by a PSCI v1.1 SYSTEM_RESET2 call.
+ * Valid only when the system event has a type of KVM_SYSTEM_EVENT_RESET.
+ */
+#define KVM_SYSTEM_EVENT_RESET_FLAG_PSCI_RESET2 (1ULL << 0)
+
+/* run->fail_entry.hardware_entry_failure_reason codes. */
+#define KVM_EXIT_FAIL_ENTRY_CPU_UNSUPPORTED (1ULL << 0)
+
#endif
#endif /* __ARM_KVM_H__ */
--git a/linux-headers/asm-generic/mman-common.h b/linux-headers/asm-generic/mman-common.h
index 1567a3294c..6c1aa92a92 100644
--- a/linux-headers/asm-generic/mman-common.h
+++ b/linux-headers/asm-generic/mman-common.h
@@ -75,6 +75,8 @@
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
+#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
+
/* compatibility flags */
#define MAP_FILE 0
--git a/linux-headers/asm-mips/mman.h b/linux-headers/asm-mips/mman.h
index 40b210c65a..1be428663c 100644
--- a/linux-headers/asm-mips/mman.h
+++ b/linux-headers/asm-mips/mman.h
@@ -101,6 +101,8 @@
#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */
#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */
+#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */
+
/* compatibility flags */
#define MAP_FILE 0
--git a/linux-headers/asm-s390/kvm.h b/linux-headers/asm-s390/kvm.h
index f053b8304a..b83747876f 100644
--- a/linux-headers/asm-s390/kvm.h
+++ b/linux-headers/asm-s390/kvm.h
@@ -74,6 +74,7 @@ struct kvm_s390_io_adapter_req {
#define KVM_S390_VM_CRYPTO 2
#define KVM_S390_VM_CPU_MODEL 3
#define KVM_S390_VM_MIGRATION 4
+#define KVM_S390_VM_CPU_TOPOLOGY 5
/* kvm attributes for mem_ctrl */
#define KVM_S390_VM_MEM_ENABLE_CMMA 0
@@ -171,6 +172,14 @@ struct kvm_s390_vm_cpu_subfunc {
#define KVM_S390_VM_MIGRATION_START 1
#define KVM_S390_VM_MIGRATION_STATUS 2
+/* kvm attributes for cpu topology */
+#define KVM_S390_VM_CPU_TOPO_MTR_CLEAR 0
+#define KVM_S390_VM_CPU_TOPO_MTR_SET 1
+
+struct kvm_s390_cpu_topology {
+ __u16 mtcr;
+};
+
/* for KVM_GET_REGS and KVM_SET_REGS */
struct kvm_regs {
/* general purpose regs for s390 */
--git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index d232feaae9..f7191a8e34 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -562,9 +562,12 @@ struct kvm_s390_mem_op {
__u32 op; /* type of operation */
__u64 buf; /* buffer in userspace */
union {
- __u8 ar; /* the access register number */
+ struct {
+ __u8 ar; /* the access register number */
+ __u8 key; /* access key, ignored if flag unset */
+ };
__u32 sida_offset; /* offset into the sida */
- __u8 reserved[32]; /* should be set to 0 */
+ __u8 reserved[32]; /* ignored */
};
};
/* types for kvm_s390_mem_op->op */
@@ -572,9 +575,12 @@ struct kvm_s390_mem_op {
#define KVM_S390_MEMOP_LOGICAL_WRITE 1
#define KVM_S390_MEMOP_SIDA_READ 2
#define KVM_S390_MEMOP_SIDA_WRITE 3
+#define KVM_S390_MEMOP_ABSOLUTE_READ 4
+#define KVM_S390_MEMOP_ABSOLUTE_WRITE 5
/* flags for kvm_s390_mem_op->flags */
#define KVM_S390_MEMOP_F_CHECK_ONLY (1ULL << 0)
#define KVM_S390_MEMOP_F_INJECT_EXCEPTION (1ULL << 1)
+#define KVM_S390_MEMOP_F_SKEY_PROTECTION (1ULL << 2)
/* for KVM_INTERRUPT */
struct kvm_interrupt {
@@ -1134,6 +1140,11 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_VM_GPA_BITS 207
#define KVM_CAP_XSAVE2 208
#define KVM_CAP_SYS_ATTRIBUTES 209
+#define KVM_CAP_PPC_AIL_MODE_3 210
+#define KVM_CAP_S390_MEM_OP_EXTENSION 211
+#define KVM_CAP_PMU_CAPABILITY 212
+#define KVM_CAP_DISABLE_QUIRKS2 213
+#define KVM_CAP_S390_CPU_TOPOLOGY 214
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1624,9 +1635,6 @@ struct kvm_enc_region {
#define KVM_S390_NORMAL_RESET _IO(KVMIO, 0xc3)
#define KVM_S390_CLEAR_RESET _IO(KVMIO, 0xc4)
-/* Available with KVM_CAP_XSAVE2 */
-#define KVM_GET_XSAVE2 _IOR(KVMIO, 0xcf, struct kvm_xsave)
-
struct kvm_s390_pv_sec_parm {
__u64 origin;
__u64 length;
@@ -1973,6 +1981,8 @@ struct kvm_dirty_gfn {
#define KVM_BUS_LOCK_DETECTION_OFF (1 << 0)
#define KVM_BUS_LOCK_DETECTION_EXIT (1 << 1)
+#define KVM_PMU_CAP_DISABLE (1 << 0)
+
/**
* struct kvm_stats_header - Header of per vm/vcpu binary statistics data.
* @flags: Some extra information for header, always 0 for now.
--git a/linux-headers/linux/psci.h b/linux-headers/linux/psci.h
index a6772d508b..213b2a0f70 100644
--- a/linux-headers/linux/psci.h
+++ b/linux-headers/linux/psci.h
@@ -82,6 +82,10 @@
#define PSCI_0_2_TOS_UP_NO_MIGRATE 1
#define PSCI_0_2_TOS_MP 2
+/* PSCI v1.1 reset type encoding for SYSTEM_RESET2 */
+#define PSCI_1_1_RESET_TYPE_SYSTEM_WARM_RESET 0
+#define PSCI_1_1_RESET_TYPE_VENDOR_START 0x80000000U
+
/* PSCI version decoding (independent of PSCI version) */
#define PSCI_VERSION_MAJOR_SHIFT 16
#define PSCI_VERSION_MINOR_MASK \
--git a/linux-headers/linux/userfaultfd.h b/linux-headers/linux/userfaultfd.h
index 8479af5f4c..769b8379e4 100644
--- a/linux-headers/linux/userfaultfd.h
+++ b/linux-headers/linux/userfaultfd.h
@@ -32,7 +32,8 @@
UFFD_FEATURE_SIGBUS | \
UFFD_FEATURE_THREAD_ID | \
UFFD_FEATURE_MINOR_HUGETLBFS | \
- UFFD_FEATURE_MINOR_SHMEM)
+ UFFD_FEATURE_MINOR_SHMEM | \
+ UFFD_FEATURE_EXACT_ADDRESS)
#define UFFD_API_IOCTLS \
((__u64)1 << _UFFDIO_REGISTER | \
(__u64)1 << _UFFDIO_UNREGISTER | \
@@ -189,6 +190,10 @@ struct uffdio_api {
*
* UFFD_FEATURE_MINOR_SHMEM indicates the same support as
* UFFD_FEATURE_MINOR_HUGETLBFS, but for shmem-backed pages instead.
+ *
+ * UFFD_FEATURE_EXACT_ADDRESS indicates that the exact address of page
+ * faults would be provided and the offset within the page would not be
+ * masked.
*/
#define UFFD_FEATURE_PAGEFAULT_FLAG_WP (1<<0)
#define UFFD_FEATURE_EVENT_FORK (1<<1)
@@ -201,6 +206,7 @@ struct uffdio_api {
#define UFFD_FEATURE_THREAD_ID (1<<8)
#define UFFD_FEATURE_MINOR_HUGETLBFS (1<<9)
#define UFFD_FEATURE_MINOR_SHMEM (1<<10)
+#define UFFD_FEATURE_EXACT_ADDRESS (1<<11)
__u64 features;
__u64 ioctls;
--git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index e680594f27..e9f7795c39 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -323,7 +323,7 @@ struct vfio_region_info_cap_type {
#define VFIO_REGION_TYPE_PCI_VENDOR_MASK (0xffff)
#define VFIO_REGION_TYPE_GFX (1)
#define VFIO_REGION_TYPE_CCW (2)
-#define VFIO_REGION_TYPE_MIGRATION (3)
+#define VFIO_REGION_TYPE_MIGRATION_DEPRECATED (3)
/* sub-types for VFIO_REGION_TYPE_PCI_* */
@@ -405,225 +405,29 @@ struct vfio_region_gfx_edid {
#define VFIO_REGION_SUBTYPE_CCW_CRW (3)
/* sub-types for VFIO_REGION_TYPE_MIGRATION */
-#define VFIO_REGION_SUBTYPE_MIGRATION (1)
-
-/*
- * The structure vfio_device_migration_info is placed at the 0th offset of
- * the VFIO_REGION_SUBTYPE_MIGRATION region to get and set VFIO device related
- * migration information. Field accesses from this structure are only supported
- * at their native width and alignment. Otherwise, the result is undefined and
- * vendor drivers should return an error.
- *
- * device_state: (read/write)
- * - The user application writes to this field to inform the vendor driver
- * about the device state to be transitioned to.
- * - The vendor driver should take the necessary actions to change the
- * device state. After successful transition to a given state, the
- * vendor driver should return success on write(device_state, state)
- * system call. If the device state transition fails, the vendor driver
- * should return an appropriate -errno for the fault condition.
- * - On the user application side, if the device state transition fails,
- * that is, if write(device_state, state) returns an error, read
- * device_state again to determine the current state of the device from
- * the vendor driver.
- * - The vendor driver should return previous state of the device unless
- * the vendor driver has encountered an internal error, in which case
- * the vendor driver may report the device_state VFIO_DEVICE_STATE_ERROR.
- * - The user application must use the device reset ioctl to recover the
- * device from VFIO_DEVICE_STATE_ERROR state. If the device is
- * indicated to be in a valid device state by reading device_state, the
- * user application may attempt to transition the device to any valid
- * state reachable from the current state or terminate itself.
- *
- * device_state consists of 3 bits:
- * - If bit 0 is set, it indicates the _RUNNING state. If bit 0 is clear,
- * it indicates the _STOP state. When the device state is changed to
- * _STOP, driver should stop the device before write() returns.
- * - If bit 1 is set, it indicates the _SAVING state, which means that the
- * driver should start gathering device state information that will be
- * provided to the VFIO user application to save the device's state.
- * - If bit 2 is set, it indicates the _RESUMING state, which means that
- * the driver should prepare to resume the device. Data provided through
- * the migration region should be used to resume the device.
- * Bits 3 - 31 are reserved for future use. To preserve them, the user
- * application should perform a read-modify-write operation on this
- * field when modifying the specified bits.
- *
- * +------- _RESUMING
- * |+------ _SAVING
- * ||+----- _RUNNING
- * |||
- * 000b => Device Stopped, not saving or resuming
- * 001b => Device running, which is the default state
- * 010b => Stop the device & save the device state, stop-and-copy state
- * 011b => Device running and save the device state, pre-copy state
- * 100b => Device stopped and the device state is resuming
- * 101b => Invalid state
- * 110b => Error state
- * 111b => Invalid state
- *
- * State transitions:
- *
- * _RESUMING _RUNNING Pre-copy Stop-and-copy _STOP
- * (100b) (001b) (011b) (010b) (000b)
- * 0. Running or default state
- * |
- *
- * 1. Normal Shutdown (optional)
- * |------------------------------------->|
- *
- * 2. Save the state or suspend
- * |------------------------->|---------->|
- *
- * 3. Save the state during live migration
- * |----------->|------------>|---------->|
- *
- * 4. Resuming
- * |<---------|
- *
- * 5. Resumed
- * |--------->|
- *
- * 0. Default state of VFIO device is _RUNNING when the user application starts.
- * 1. During normal shutdown of the user application, the user application may
- * optionally change the VFIO device state from _RUNNING to _STOP. This
- * transition is optional. The vendor driver must support this transition but
- * must not require it.
- * 2. When the user application saves state or suspends the application, the
- * device state transitions from _RUNNING to stop-and-copy and then to _STOP.
- * On state transition from _RUNNING to stop-and-copy, driver must stop the
- * device, save the device state and send it to the application through the
- * migration region. The sequence to be followed for such transition is given
- * below.
- * 3. In live migration of user application, the state transitions from _RUNNING
- * to pre-copy, to stop-and-copy, and to _STOP.
- * On state transition from _RUNNING to pre-copy, the driver should start
- * gathering the device state while the application is still running and send
- * the device state data to application through the migration region.
- * On state transition from pre-copy to stop-and-copy, the driver must stop
- * the device, save the device state and send it to the user application
- * through the migration region.
- * Vendor drivers must support the pre-copy state even for implementations
- * where no data is provided to the user before the stop-and-copy state. The
- * user must not be required to consume all migration data before the device
- * transitions to a new state, including the stop-and-copy state.
- * The sequence to be followed for above two transitions is given below.
- * 4. To start the resuming phase, the device state should be transitioned from
- * the _RUNNING to the _RESUMING state.
- * In the _RESUMING state, the driver should use the device state data
- * received through the migration region to resume the device.
- * 5. After providing saved device data to the driver, the application should
- * change the state from _RESUMING to _RUNNING.
- *
- * reserved:
- * Reads on this field return zero and writes are ignored.
- *
- * pending_bytes: (read only)
- * The number of pending bytes still to be migrated from the vendor driver.
- *
- * data_offset: (read only)
- * The user application should read data_offset field from the migration
- * region. The user application should read the device data from this
- * offset within the migration region during the _SAVING state or write
- * the device data during the _RESUMING state. See below for details of
- * sequence to be followed.
- *
- * data_size: (read/write)
- * The user application should read data_size to get the size in bytes of
- * the data copied in the migration region during the _SAVING state and
- * write the size in bytes of the data copied in the migration region
- * during the _RESUMING state.
- *
- * The format of the migration region is as follows:
- * ------------------------------------------------------------------
- * |vfio_device_migration_info| data section |
- * | | /////////////////////////////// |
- * ------------------------------------------------------------------
- * ^ ^
- * offset 0-trapped part data_offset
- *
- * The structure vfio_device_migration_info is always followed by the data
- * section in the region, so data_offset will always be nonzero. The offset
- * from where the data is copied is decided by the kernel driver. The data
- * section can be trapped, mmapped, or partitioned, depending on how the kernel
- * driver defines the data section. The data section partition can be defined
- * as mapped by the sparse mmap capability. If mmapped, data_offset must be
- * page aligned, whereas initial section which contains the
- * vfio_device_migration_info structure, might not end at the offset, which is
- * page aligned. The user is not required to access through mmap regardless
- * of the capabilities of the region mmap.
- * The vendor driver should determine whether and how to partition the data
- * section. The vendor driver should return data_offset accordingly.
- *
- * The sequence to be followed while in pre-copy state and stop-and-copy state
- * is as follows:
- * a. Read pending_bytes, indicating the start of a new iteration to get device
- * data. Repeated read on pending_bytes at this stage should have no side
- * effects.
- * If pending_bytes == 0, the user application should not iterate to get data
- * for that device.
- * If pending_bytes > 0, perform the following steps.
- * b. Read data_offset, indicating that the vendor driver should make data
- * available through the data section. The vendor driver should return this
- * read operation only after data is available from (region + data_offset)
- * to (region + data_offset + data_size).
- * c. Read data_size, which is the amount of data in bytes available through
- * the migration region.
- * Read on data_offset and data_size should return the offset and size of
- * the current buffer if the user application reads data_offset and
- * data_size more than once here.
- * d. Read data_size bytes of data from (region + data_offset) from the
- * migration region.
- * e. Process the data.
- * f. Read pending_bytes, which indicates that the data from the previous
- * iteration has been read. If pending_bytes > 0, go to step b.
- *
- * The user application can transition from the _SAVING|_RUNNING
- * (pre-copy state) to the _SAVING (stop-and-copy) state regardless of the
- * number of pending bytes. The user application should iterate in _SAVING
- * (stop-and-copy) until pending_bytes is 0.
- *
- * The sequence to be followed while _RESUMING device state is as follows:
- * While data for this device is available, repeat the following steps:
- * a. Read data_offset from where the user application should write data.
- * b. Write migration data starting at the migration region + data_offset for
- * the length determined by data_size from the migration source.
- * c. Write data_size, which indicates to the vendor driver that data is
- * written in the migration region. Vendor driver must return this write
- * operations on consuming data. Vendor driver should apply the
- * user-provided migration region data to the device resume state.
- *
- * If an error occurs during the above sequences, the vendor driver can return
- * an error code for next read() or write() operation, which will terminate the
- * loop. The user application should then take the next necessary action, for
- * example, failing migration or terminating the user application.
- *
- * For the user application, data is opaque. The user application should write
- * data in the same order as the data is received and the data should be of
- * same transaction size at the source.
- */
+#define VFIO_REGION_SUBTYPE_MIGRATION_DEPRECATED (1)
struct vfio_device_migration_info {
__u32 device_state; /* VFIO device state */
-#define VFIO_DEVICE_STATE_STOP (0)
-#define VFIO_DEVICE_STATE_RUNNING (1 << 0)
-#define VFIO_DEVICE_STATE_SAVING (1 << 1)
-#define VFIO_DEVICE_STATE_RESUMING (1 << 2)
-#define VFIO_DEVICE_STATE_MASK (VFIO_DEVICE_STATE_RUNNING | \
- VFIO_DEVICE_STATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING)
+#define VFIO_DEVICE_STATE_V1_STOP (0)
+#define VFIO_DEVICE_STATE_V1_RUNNING (1 << 0)
+#define VFIO_DEVICE_STATE_V1_SAVING (1 << 1)
+#define VFIO_DEVICE_STATE_V1_RESUMING (1 << 2)
+#define VFIO_DEVICE_STATE_MASK (VFIO_DEVICE_STATE_V1_RUNNING | \
+ VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING)
#define VFIO_DEVICE_STATE_VALID(state) \
- (state & VFIO_DEVICE_STATE_RESUMING ? \
- (state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_RESUMING : 1)
+ (state & VFIO_DEVICE_STATE_V1_RESUMING ? \
+ (state & VFIO_DEVICE_STATE_MASK) == VFIO_DEVICE_STATE_V1_RESUMING : 1)
#define VFIO_DEVICE_STATE_IS_ERROR(state) \
- ((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING))
+ ((state & VFIO_DEVICE_STATE_MASK) == (VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING))
#define VFIO_DEVICE_STATE_SET_ERROR(state) \
- ((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_SATE_SAVING | \
- VFIO_DEVICE_STATE_RESUMING)
+ ((state & ~VFIO_DEVICE_STATE_MASK) | VFIO_DEVICE_STATE_V1_SAVING | \
+ VFIO_DEVICE_STATE_V1_RESUMING)
__u32 reserved;
__u64 pending_bytes;
@@ -1002,6 +806,186 @@ struct vfio_device_feature {
*/
#define VFIO_DEVICE_FEATURE_PCI_VF_TOKEN (0)
+/*
+ * Indicates the device can support the migration API through
+ * VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE. If this GET succeeds, the RUNNING and
+ * ERROR states are always supported. Support for additional states is
+ * indicated via the flags field; at least VFIO_MIGRATION_STOP_COPY must be
+ * set.
+ *
+ * VFIO_MIGRATION_STOP_COPY means that STOP, STOP_COPY and
+ * RESUMING are supported.
+ *
+ * VFIO_MIGRATION_STOP_COPY | VFIO_MIGRATION_P2P means that RUNNING_P2P
+ * is supported in addition to the STOP_COPY states.
+ *
+ * Other combinations of flags have behavior to be defined in the future.
+ */
+struct vfio_device_feature_migration {
+ __aligned_u64 flags;
+#define VFIO_MIGRATION_STOP_COPY (1 << 0)
+#define VFIO_MIGRATION_P2P (1 << 1)
+};
+#define VFIO_DEVICE_FEATURE_MIGRATION 1
+
+/*
+ * Upon VFIO_DEVICE_FEATURE_SET, execute a migration state change on the VFIO
+ * device. The new state is supplied in device_state, see enum
+ * vfio_device_mig_state for details
+ *
+ * The kernel migration driver must fully transition the device to the new state
+ * value before the operation returns to the user.
+ *
+ * The kernel migration driver must not generate asynchronous device state
+ * transitions outside of manipulation by the user or the VFIO_DEVICE_RESET
+ * ioctl as described above.
+ *
+ * If this function fails then current device_state may be the original
+ * operating state or some other state along the combination transition path.
+ * The user can then decide if it should execute a VFIO_DEVICE_RESET, attempt
+ * to return to the original state, or attempt to return to some other state
+ * such as RUNNING or STOP.
+ *
+ * If the new_state starts a new data transfer session then the FD associated
+ * with that session is returned in data_fd. The user is responsible to close
+ * this FD when it is finished. The user must consider the migration data stream
+ * carried over the FD to be opaque and must preserve the byte order of the
+ * stream. The user is not required to preserve buffer segmentation when writing
+ * the data stream during the RESUMING operation.
+ *
+ * Upon VFIO_DEVICE_FEATURE_GET, get the current migration state of the VFIO
+ * device, data_fd will be -1.
+ */
+struct vfio_device_feature_mig_state {
+ __u32 device_state; /* From enum vfio_device_mig_state */
+ __s32 data_fd;
+};
+#define VFIO_DEVICE_FEATURE_MIG_DEVICE_STATE 2
+
+/*
+ * The device migration Finite State Machine is described by the enum
+ * vfio_device_mig_state. Some of the FSM arcs will create a migration data
+ * transfer session by returning a FD, in this case the migration data will
+ * flow over the FD using read() and write() as discussed below.
+ *
+ * There are 5 states to support VFIO_MIGRATION_STOP_COPY:
+ * RUNNING - The device is running normally
+ * STOP - The device does not change the internal or external state
+ * STOP_COPY - The device internal state can be read out
+ * RESUMING - The device is stopped and is loading a new internal state
+ * ERROR - The device has failed and must be reset
+ *
+ * And 1 optional state to support VFIO_MIGRATION_P2P:
+ * RUNNING_P2P - RUNNING, except the device cannot do peer to peer DMA
+ *
+ * The FSM takes actions on the arcs between FSM states. The driver implements
+ * the following behavior for the FSM arcs:
+ *
+ * RUNNING_P2P -> STOP
+ * STOP_COPY -> STOP
+ * While in STOP the device must stop the operation of the device. The device
+ * must not generate interrupts, DMA, or any other change to external state.
+ * It must not change its internal state. When stopped the device and kernel
+ * migration driver must accept and respond to interaction to support external
+ * subsystems in the STOP state, for example PCI MSI-X and PCI config space.
+ * Failure by the user to restrict device access while in STOP must not result
+ * in error conditions outside the user context (ex. host system faults).
+ *
+ * The STOP_COPY arc will terminate a data transfer session.
+ *
+ * RESUMING -> STOP
+ * Leaving RESUMING terminates a data transfer session and indicates the
+ * device should complete processing of the data delivered by write(). The
+ * kernel migration driver should complete the incorporation of data written
+ * to the data transfer FD into the device internal state and perform
+ * final validity and consistency checking of the new device state. If the
+ * user provided data is found to be incomplete, inconsistent, or otherwise
+ * invalid, the migration driver must fail the SET_STATE ioctl and
+ * optionally go to the ERROR state as described below.
+ *
+ * While in STOP the device has the same behavior as other STOP states
+ * described above.
+ *
+ * To abort a RESUMING session the device must be reset.
+ *
+ * RUNNING_P2P -> RUNNING
+ * While in RUNNING the device is fully operational, the device may generate
+ * interrupts, DMA, respond to MMIO, all vfio device regions are functional,
+ * and the device may advance its internal state.
+ *
+ * RUNNING -> RUNNING_P2P
+ * STOP -> RUNNING_P2P
+ * While in RUNNING_P2P the device is partially running in the P2P quiescent
+ * state defined below.
+ *
+ * STOP -> STOP_COPY
+ * This arc begin the process of saving the device state and will return a
+ * new data_fd.
+ *
+ * While in the STOP_COPY state the device has the same behavior as STOP
+ * with the addition that the data transfers session continues to stream the
+ * migration state. End of stream on the FD indicates the entire device
+ * state has been transferred.
+ *
+ * The user should take steps to restrict access to vfio device regions while
+ * the device is in STOP_COPY or risk corruption of the device migration data
+ * stream.
+ *
+ * STOP -> RESUMING
+ * Entering the RESUMING state starts a process of restoring the device state
+ * and will return a new data_fd. The data stream fed into the data_fd should
+ * be taken from the data transfer output of a single FD during saving from
+ * a compatible device. The migration driver may alter/reset the internal
+ * device state for this arc if required to prepare the device to receive the
+ * migration data.
+ *
+ * any -> ERROR
+ * ERROR cannot be specified as a device state, however any transition request
+ * can be failed with an errno return and may then move the device_state into
+ * ERROR. In this case the device was unable to execute the requested arc and
+ * was also unable to restore the device to any valid device_state.
+ * To recover from ERROR VFIO_DEVICE_RESET must be used to return the
+ * device_state back to RUNNING.
+ *
+ * The optional peer to peer (P2P) quiescent state is intended to be a quiescent
+ * state for the device for the purposes of managing multiple devices within a
+ * user context where peer-to-peer DMA between devices may be active. The
+ * RUNNING_P2P states must prevent the device from initiating
+ * any new P2P DMA transactions. If the device can identify P2P transactions
+ * then it can stop only P2P DMA, otherwise it must stop all DMA. The migration
+ * driver must complete any such outstanding operations prior to completing the
+ * FSM arc into a P2P state. For the purpose of specification the states
+ * behave as though the device was fully running if not supported. Like while in
+ * STOP or STOP_COPY the user must not touch the device, otherwise the state
+ * can be exited.
+ *
+ * The remaining possible transitions are interpreted as combinations of the
+ * above FSM arcs. As there are multiple paths through the FSM arcs the path
+ * should be selected based on the following rules:
+ * - Select the shortest path.
+ * Refer to vfio_mig_get_next_state() for the result of the algorithm.
+ *
+ * The automatic transit through the FSM arcs that make up the combination
+ * transition is invisible to the user. When working with combination arcs the
+ * user may see any step along the path in the device_state if SET_STATE
+ * fails. When handling these types of errors users should anticipate future
+ * revisions of this protocol using new states and those states becoming
+ * visible in this case.
+ *
+ * The optional states cannot be used with SET_STATE if the device does not
+ * support them. The user can discover if these states are supported by using
+ * VFIO_DEVICE_FEATURE_MIGRATION. By using combination transitions the user can
+ * avoid knowing about these optional states if the kernel driver supports them.
+ */
+enum vfio_device_mig_state {
+ VFIO_DEVICE_STATE_ERROR = 0,
+ VFIO_DEVICE_STATE_STOP = 1,
+ VFIO_DEVICE_STATE_RUNNING = 2,
+ VFIO_DEVICE_STATE_STOP_COPY = 3,
+ VFIO_DEVICE_STATE_RESUMING = 4,
+ VFIO_DEVICE_STATE_RUNNING_P2P = 5,
+};
+
/* -------- API for Type1 VFIO IOMMU -------- */
/**
--git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
--- a/linux-headers/linux/vhost.h
+++ b/linux-headers/linux/vhost.h
@@ -150,4 +150,11 @@
/* Get the valid iova range */
#define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \
struct vhost_vdpa_iova_range)
+
+/* Get the config size */
+#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x79, __u32)
+
+/* Get the count of all virtqueues */
+#define VHOST_VDPA_GET_VQS_COUNT _IOR(VHOST_VIRTIO, 0x80, __u32)
+
#endif
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 02/13] vfio: tolerate migration protocol v1 uapi renames
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
From: Matthew Rosato <mjrosato@linux.ibm.com>
The v1 uapi is deprecated and will be replaced by v2 at some point;
this patch just tolerates the renaming of uapi fields to reflect
v1 / deprecated status.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
hw/vfio/common.c | 2 +-
hw/vfio/migration.c | 19 +++++++++++--------
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 080046e3f5..7b1e12fb69 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -380,7 +380,7 @@ static bool vfio_devices_all_running_and_saving(VFIOContainer *container)
return false;
}
- if ((migration->device_state & VFIO_DEVICE_STATE_SAVING) &&
+ if ((migration->device_state & VFIO_DEVICE_STATE_V1_SAVING) &&
(migration->device_state & VFIO_DEVICE_STATE_RUNNING)) {
continue;
} else {
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index ff6b45de6b..e109cee551 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -432,7 +432,7 @@ static int vfio_save_setup(QEMUFile *f, void *opaque)
}
ret = vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_MASK,
- VFIO_DEVICE_STATE_SAVING);
+ VFIO_DEVICE_STATE_V1_SAVING);
if (ret) {
error_report("%s: Failed to set state SAVING", vbasedev->name);
return ret;
@@ -532,7 +532,7 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
int ret;
ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_RUNNING,
- VFIO_DEVICE_STATE_SAVING);
+ VFIO_DEVICE_STATE_V1_SAVING);
if (ret) {
error_report("%s: Failed to set state STOP and SAVING",
vbasedev->name);
@@ -569,7 +569,7 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
return ret;
}
- ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_SAVING, 0);
+ ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_SAVING, 0);
if (ret) {
error_report("%s: Failed to set state STOPPED", vbasedev->name);
return ret;
@@ -730,7 +730,7 @@ static void vfio_vmstate_change(void *opaque, bool running, RunState state)
* start saving data.
*/
if (state == RUN_STATE_SAVE_VM) {
- value = VFIO_DEVICE_STATE_SAVING;
+ value = VFIO_DEVICE_STATE_V1_SAVING;
} else {
value = 0;
}
@@ -768,8 +768,9 @@ static void vfio_migration_state_notifier(Notifier *notifier, void *data)
case MIGRATION_STATUS_FAILED:
bytes_transferred = 0;
ret = vfio_migration_set_state(vbasedev,
- ~(VFIO_DEVICE_STATE_SAVING | VFIO_DEVICE_STATE_RESUMING),
- VFIO_DEVICE_STATE_RUNNING);
+ ~(VFIO_DEVICE_STATE_V1_SAVING |
+ VFIO_DEVICE_STATE_RESUMING),
+ VFIO_DEVICE_STATE_RUNNING);
if (ret) {
error_report("%s: Failed to set state RUNNING", vbasedev->name);
}
@@ -864,8 +865,10 @@ int vfio_migration_probe(VFIODevice *vbasedev, Error **errp)
goto add_blocker;
}
- ret = vfio_get_dev_region_info(vbasedev, VFIO_REGION_TYPE_MIGRATION,
- VFIO_REGION_SUBTYPE_MIGRATION, &info);
+ ret = vfio_get_dev_region_info(vbasedev,
+ VFIO_REGION_TYPE_MIGRATION_DEPRECATED,
+ VFIO_REGION_SUBTYPE_MIGRATION_DEPRECATED,
+ &info);
if (ret) {
goto add_blocker;
}
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 02/13] vfio: tolerate migration protocol v1 uapi renames
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
From: Matthew Rosato <mjrosato@linux.ibm.com>
The v1 uapi is deprecated and will be replaced by v2 at some point;
this patch just tolerates the renaming of uapi fields to reflect
v1 / deprecated status.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
hw/vfio/common.c | 2 +-
hw/vfio/migration.c | 19 +++++++++++--------
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 080046e3f5..7b1e12fb69 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -380,7 +380,7 @@ static bool vfio_devices_all_running_and_saving(VFIOContainer *container)
return false;
}
- if ((migration->device_state & VFIO_DEVICE_STATE_SAVING) &&
+ if ((migration->device_state & VFIO_DEVICE_STATE_V1_SAVING) &&
(migration->device_state & VFIO_DEVICE_STATE_RUNNING)) {
continue;
} else {
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index ff6b45de6b..e109cee551 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -432,7 +432,7 @@ static int vfio_save_setup(QEMUFile *f, void *opaque)
}
ret = vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_MASK,
- VFIO_DEVICE_STATE_SAVING);
+ VFIO_DEVICE_STATE_V1_SAVING);
if (ret) {
error_report("%s: Failed to set state SAVING", vbasedev->name);
return ret;
@@ -532,7 +532,7 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
int ret;
ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_RUNNING,
- VFIO_DEVICE_STATE_SAVING);
+ VFIO_DEVICE_STATE_V1_SAVING);
if (ret) {
error_report("%s: Failed to set state STOP and SAVING",
vbasedev->name);
@@ -569,7 +569,7 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
return ret;
}
- ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_SAVING, 0);
+ ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_SAVING, 0);
if (ret) {
error_report("%s: Failed to set state STOPPED", vbasedev->name);
return ret;
@@ -730,7 +730,7 @@ static void vfio_vmstate_change(void *opaque, bool running, RunState state)
* start saving data.
*/
if (state == RUN_STATE_SAVE_VM) {
- value = VFIO_DEVICE_STATE_SAVING;
+ value = VFIO_DEVICE_STATE_V1_SAVING;
} else {
value = 0;
}
@@ -768,8 +768,9 @@ static void vfio_migration_state_notifier(Notifier *notifier, void *data)
case MIGRATION_STATUS_FAILED:
bytes_transferred = 0;
ret = vfio_migration_set_state(vbasedev,
- ~(VFIO_DEVICE_STATE_SAVING | VFIO_DEVICE_STATE_RESUMING),
- VFIO_DEVICE_STATE_RUNNING);
+ ~(VFIO_DEVICE_STATE_V1_SAVING |
+ VFIO_DEVICE_STATE_RESUMING),
+ VFIO_DEVICE_STATE_RUNNING);
if (ret) {
error_report("%s: Failed to set state RUNNING", vbasedev->name);
}
@@ -864,8 +865,10 @@ int vfio_migration_probe(VFIODevice *vbasedev, Error **errp)
goto add_blocker;
}
- ret = vfio_get_dev_region_info(vbasedev, VFIO_REGION_TYPE_MIGRATION,
- VFIO_REGION_SUBTYPE_MIGRATION, &info);
+ ret = vfio_get_dev_region_info(vbasedev,
+ VFIO_REGION_TYPE_MIGRATION_DEPRECATED,
+ VFIO_REGION_SUBTYPE_MIGRATION_DEPRECATED,
+ &info);
if (ret) {
goto add_blocker;
}
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 03/13] s390x: topology: CPU topology objects and structures
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
We use new objects to have a dynamic administration of the CPU topology.
The highest level object in this implementation is the s390 book and
in this first implementation of CPU topology for S390 we have a single
book.
The book is built as a SYSBUS bridge during the CPU initialization.
Other objects, sockets and core will be built after the parsing
of the QEMU -smp argument.
Every object under this single book will be build dynamically
immediately after a CPU has be realized if it is needed.
The CPU will fill the sockets once after the other, according to the
number of core per socket defined during the smp parsing.
Each CPU inside a socket will be represented by a bit in a 64bit
unsigned long. Set on plug and clear on unplug of a CPU.
For the S390 CPU topology, thread and cores are merged into
topology cores and the number of topology cores is the multiplication
of cores by the numbers of threads.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 361 ++++++++++++++++++++++++++++++++
hw/s390x/meson.build | 1 +
hw/s390x/s390-virtio-ccw.c | 4 +
include/hw/s390x/cpu-topology.h | 74 +++++++
target/s390x/cpu.h | 47 +++++
5 files changed, 487 insertions(+)
create mode 100644 hw/s390x/cpu-topology.c
create mode 100644 include/hw/s390x/cpu-topology.h
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
new file mode 100644
index 0000000000..b7131b4ac3
--- /dev/null
+++ b/hw/s390x/cpu-topology.c
@@ -0,0 +1,361 @@
+/*
+ * CPU Topology
+ *
+ * Copyright 2021 IBM Corp.
+ * Author(s): Pierre Morel <pmorel@linux.ibm.com>
+
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "hw/sysbus.h"
+#include "hw/s390x/cpu-topology.h"
+#include "hw/qdev-properties.h"
+#include "hw/boards.h"
+#include "qemu/typedefs.h"
+#include "target/s390x/cpu.h"
+#include "hw/s390x/s390-virtio-ccw.h"
+
+static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
+ int origin)
+{
+ DeviceState *dev;
+ S390TopologyCores *cores;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (socket->bus->num_children >= (ms->smp.cores * ms->smp.threads)) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_CORES);
+ qdev_realize_and_unref(dev, socket->bus, &error_fatal);
+
+ cores = S390_TOPOLOGY_CORES(dev);
+ cores->origin = origin;
+ socket->cnt += 1;
+
+ return cores;
+}
+
+static S390TopologySocket *s390_create_socket(S390TopologyBook *book, int id)
+{
+ DeviceState *dev;
+ S390TopologySocket *socket;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (book->bus->num_children >= ms->smp.sockets) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_SOCKET);
+ qdev_realize_and_unref(dev, book->bus, &error_fatal);
+
+ socket = S390_TOPOLOGY_SOCKET(dev);
+ socket->socket_id = id;
+ book->cnt++;
+
+ return socket;
+}
+
+/*
+ * s390_get_cores:
+ * @socket: the socket to search into
+ * @origin: the origin specified for the S390TopologyCores
+ *
+ * returns a pointer to a S390TopologyCores structure within a socket having
+ * the specified origin.
+ * First search if the socket is already containing the S390TopologyCores
+ * structure and if not create one with this origin.
+ */
+static S390TopologyCores *s390_get_cores(S390TopologySocket *socket, int origin)
+{
+ S390TopologyCores *cores;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &socket->bus->children, sibling) {
+ cores = S390_TOPOLOGY_CORES(kid->child);
+ if (cores->origin == origin) {
+ return cores;
+ }
+ }
+ return s390_create_cores(socket, origin);
+}
+
+/*
+ * s390_get_socket:
+ * @book: The book to search into
+ * @socket_id: the identifier of the socket to search for
+ *
+ * returns a pointer to a S390TopologySocket structure within a book having
+ * the specified socket_id.
+ * First search if the book is already containing the S390TopologySocket
+ * structure and if not create one with this socket_id.
+ */
+static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
+ int socket_id)
+{
+ S390TopologySocket *socket;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &book->bus->children, sibling) {
+ socket = S390_TOPOLOGY_SOCKET(kid->child);
+ if (socket->socket_id == socket_id) {
+ return socket;
+ }
+ }
+ return s390_create_socket(book, socket_id);
+}
+
+/*
+ * s390_topology_new_cpu:
+ * @core_id: the core ID is machine wide
+ *
+ * We have a single book returned by s390_get_topology(),
+ * then we build the hierarchy on demand.
+ * Note that we do not destroy the hierarchy on error creating
+ * an entry in the topology, we just keep it empty.
+ * We do not need to worry about not finding a topology level
+ * entry this would have been caught during smp parsing.
+ */
+void s390_topology_new_cpu(int core_id)
+{
+ const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyBook *book;
+ S390TopologySocket *socket;
+ S390TopologyCores *cores;
+ int cores_per_socket, sock_idx;
+ int origin, bit;
+
+ book = s390_get_topology();
+
+ cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
+
+ sock_idx = (core_id / cores_per_socket);
+ socket = s390_get_socket(book, sock_idx);
+
+ /*
+ * At the core level, each CPU is represented by a bit in a 64bit
+ * unsigned long. Set on plug and clear on unplug of a CPU.
+ * The firmware assume that all CPU in the core description have the same
+ * type, polarization and are all dedicated or shared.
+ * In the case a socket contains CPU with different type, polarization
+ * or dedication then they will be defined in different CPU containers.
+ * Currently we assume all CPU are identical and the only reason to have
+ * several S390TopologyCores inside a socket is to have more than 64 CPUs
+ * in that case the origin field, representing the offset of the first CPU
+ * in the CPU container allows to represent up to the maximal number of
+ * CPU inside several CPU containers inside the socket container.
+ */
+ origin = 64 * (core_id / 64);
+
+ cores = s390_get_cores(socket, origin);
+
+ bit = 63 - (core_id - origin);
+ set_bit(bit, &cores->mask);
+ cores->origin = origin;
+}
+
+/*
+ * Setting the first topology: 1 book, 1 socket
+ * This is enough for 64 cores if the topology is flat (single socket)
+ */
+void s390_topology_setup(MachineState *ms)
+{
+ DeviceState *dev;
+
+ /* Create BOOK bridge device */
+ dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ object_property_add_child(qdev_get_machine(),
+ TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+}
+
+S390TopologyBook *s390_get_topology(void)
+{
+ static S390TopologyBook *book;
+
+ if (!book) {
+ book = S390_TOPOLOGY_BOOK(
+ object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
+ assert(book != NULL);
+ }
+
+ return book;
+}
+
+/* --- CORES Definitions --- */
+
+static Property s390_topology_cores_properties[] = {
+ DEFINE_PROP_BOOL("dedicated", S390TopologyCores, dedicated, false),
+ DEFINE_PROP_UINT8("polarity", S390TopologyCores, polarity,
+ S390_TOPOLOGY_POLARITY_H),
+ DEFINE_PROP_UINT8("cputype", S390TopologyCores, cputype,
+ S390_TOPOLOGY_CPU_TYPE),
+ DEFINE_PROP_UINT16("origin", S390TopologyCores, origin, 0),
+ DEFINE_PROP_UINT64("mask", S390TopologyCores, mask, 0),
+ DEFINE_PROP_UINT8("id", S390TopologyCores, id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void cpu_cores_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ device_class_set_props(dc, s390_topology_cores_properties);
+ hc->unplug = qdev_simple_device_unplug_cb;
+ dc->bus_type = TYPE_S390_TOPOLOGY_SOCKET_BUS;
+ dc->desc = "topology cpu entry";
+}
+
+static const TypeInfo cpu_cores_info = {
+ .name = TYPE_S390_TOPOLOGY_CORES,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(S390TopologyCores),
+ .class_init = cpu_cores_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+/* --- SOCKETS Definitions --- */
+static Property s390_topology_socket_properties[] = {
+ DEFINE_PROP_UINT8("socket_id", S390TopologySocket, socket_id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static char *socket_bus_get_dev_path(DeviceState *dev)
+{
+ S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
+ DeviceState *book = dev->parent_bus->parent;
+ char *id = qdev_get_dev_path(book);
+ char *ret;
+
+ if (id) {
+ ret = g_strdup_printf("%s:%02d", id, socket->socket_id);
+ g_free(id);
+ } else {
+ ret = g_strdup_printf("_:%02d", socket->socket_id);
+ }
+
+ return ret;
+}
+
+static void socket_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = socket_bus_get_dev_path;
+ k->max_dev = S390_MAX_SOCKETS;
+}
+
+static const TypeInfo socket_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_SOCKET_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = socket_bus_class_init,
+};
+
+static void s390_socket_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_SOCKET_BUS, dev,
+ TYPE_S390_TOPOLOGY_SOCKET_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ socket->bus = bus;
+}
+
+static void socket_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->bus_type = TYPE_S390_TOPOLOGY_BOOK_BUS;
+ dc->realize = s390_socket_device_realize;
+ device_class_set_props(dc, s390_topology_socket_properties);
+ dc->desc = "topology socket";
+}
+
+static const TypeInfo socket_info = {
+ .name = TYPE_S390_TOPOLOGY_SOCKET,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(S390TopologySocket),
+ .class_init = socket_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+static char *book_bus_get_dev_path(DeviceState *dev)
+{
+ return g_strdup_printf("00");
+}
+
+static void book_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = book_bus_get_dev_path;
+ k->max_dev = S390_MAX_BOOKS;
+}
+
+static const TypeInfo book_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_BOOK_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = book_bus_class_init,
+};
+
+static void s390_book_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyBook *book = S390_TOPOLOGY_BOOK(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_BOOK_BUS, dev,
+ TYPE_S390_TOPOLOGY_BOOK_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ book->bus = bus;
+}
+
+static void book_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_book_device_realize;
+ dc->desc = "topology book";
+}
+
+static const TypeInfo book_info = {
+ .name = TYPE_S390_TOPOLOGY_BOOK,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyBook),
+ .class_init = book_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+static void topology_register(void)
+{
+ type_register_static(&cpu_cores_info);
+ type_register_static(&socket_bus_info);
+ type_register_static(&socket_info);
+ type_register_static(&book_bus_info);
+ type_register_static(&book_info);
+}
+
+type_init(topology_register);
diff --git a/hw/s390x/meson.build b/hw/s390x/meson.build
index 28484256ec..74678861cf 100644
--- a/hw/s390x/meson.build
+++ b/hw/s390x/meson.build
@@ -2,6 +2,7 @@ s390x_ss = ss.source_set()
s390x_ss.add(files(
'ap-bridge.c',
'ap-device.c',
+ 'cpu-topology.c',
'ccw-device.c',
'css-bridge.c',
'css.c',
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 90480e7cf9..179846e3a3 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -42,6 +42,7 @@
#include "sysemu/sysemu.h"
#include "hw/s390x/pv.h"
#include "migration/blocker.h"
+#include "hw/s390x/cpu-topology.h"
static Error *pv_mig_blocker;
@@ -88,6 +89,7 @@ static void s390_init_cpus(MachineState *machine)
/* initialize possible_cpus */
mc->possible_cpu_arch_ids(machine);
+ s390_topology_setup(machine);
for (i = 0; i < machine->smp.cpus; i++) {
s390x_new_cpu(machine->cpu_type, i, &error_fatal);
}
@@ -305,6 +307,8 @@ static void s390_cpu_plug(HotplugHandler *hotplug_dev,
g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
+ s390_topology_new_cpu(cpu->env.core_id);
+
if (dev->hotplugged) {
raise_irq_cpu_hotplug();
}
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
new file mode 100644
index 0000000000..e6e013a8b8
--- /dev/null
+++ b/include/hw/s390x/cpu-topology.h
@@ -0,0 +1,74 @@
+/*
+ * CPU Topology
+ *
+ * Copyright 2021 IBM Corp.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+#ifndef HW_S390X_CPU_TOPOLOGY_H
+#define HW_S390X_CPU_TOPOLOGY_H
+
+#include "hw/qdev-core.h"
+#include "qom/object.h"
+
+#define S390_TOPOLOGY_CPU_TYPE 0x03
+
+#define S390_TOPOLOGY_POLARITY_H 0x00
+#define S390_TOPOLOGY_POLARITY_VL 0x01
+#define S390_TOPOLOGY_POLARITY_VM 0x02
+#define S390_TOPOLOGY_POLARITY_VH 0x03
+
+#define TYPE_S390_TOPOLOGY_CORES "topology cores"
+ /*
+ * Each CPU inside a socket will be represented by a bit in a 64bit
+ * unsigned long. Set on plug and clear on unplug of a CPU.
+ * All CPU inside a mask share the same dedicated, polarity and
+ * cputype values.
+ * The origin is the offset of the first CPU in a mask.
+ */
+struct S390TopologyCores {
+ DeviceState parent_obj;
+ uint8_t id;
+ bool dedicated;
+ uint8_t polarity;
+ uint8_t cputype;
+ uint16_t origin;
+ uint64_t mask;
+ int cnt;
+};
+typedef struct S390TopologyCores S390TopologyCores;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyCores, S390_TOPOLOGY_CORES)
+
+#define TYPE_S390_TOPOLOGY_SOCKET "topology socket"
+#define TYPE_S390_TOPOLOGY_SOCKET_BUS "socket-bus"
+struct S390TopologySocket {
+ DeviceState parent_obj;
+ BusState *bus;
+ uint8_t socket_id;
+ int cnt;
+};
+typedef struct S390TopologySocket S390TopologySocket;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
+#define S390_MAX_SOCKETS 4
+
+#define TYPE_S390_TOPOLOGY_BOOK "topology book"
+#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
+struct S390TopologyBook {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t book_id;
+ int cnt;
+};
+typedef struct S390TopologyBook S390TopologyBook;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
+#define S390_MAX_BOOKS 1
+
+S390TopologyBook *s390_init_topology(void);
+
+S390TopologyBook *s390_get_topology(void);
+void s390_topology_setup(MachineState *ms);
+void s390_topology_new_cpu(int core_id);
+
+#endif
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index c49c8466e7..f6969b76c5 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -564,6 +564,53 @@ typedef union SysIB {
} SysIB;
QEMU_BUILD_BUG_ON(sizeof(SysIB) != 4096);
+/* CPU type Topology List Entry */
+typedef struct SysIBTl_cpu {
+ uint8_t nl;
+ uint8_t reserved0[3];
+ uint8_t reserved1:5;
+ uint8_t dedicated:1;
+ uint8_t polarity:2;
+ uint8_t type;
+ uint16_t origin;
+ uint64_t mask;
+} SysIBTl_cpu;
+QEMU_BUILD_BUG_ON(sizeof(SysIBTl_cpu) != 16);
+
+/* Container type Topology List Entry */
+typedef struct SysIBTl_container {
+ uint8_t nl;
+ uint8_t reserved[6];
+ uint8_t id;
+} QEMU_PACKED SysIBTl_container;
+QEMU_BUILD_BUG_ON(sizeof(SysIBTl_container) != 8);
+
+/* Generic Topology List Entry */
+typedef union SysIBTl_entry {
+ uint8_t nl;
+ SysIBTl_container container;
+ SysIBTl_cpu cpu;
+} SysIBTl_entry;
+
+#define TOPOLOGY_NR_MAG 6
+#define TOPOLOGY_NR_MAG6 0
+#define TOPOLOGY_NR_MAG5 1
+#define TOPOLOGY_NR_MAG4 2
+#define TOPOLOGY_NR_MAG3 3
+#define TOPOLOGY_NR_MAG2 4
+#define TOPOLOGY_NR_MAG1 5
+/* Configuration topology */
+typedef struct SysIB_151x {
+ uint8_t res0[2];
+ uint16_t length;
+ uint8_t mag[TOPOLOGY_NR_MAG];
+ uint8_t res1;
+ uint8_t mnest;
+ uint32_t res2;
+ SysIBTl_entry tle[0];
+} SysIB_151x;
+QEMU_BUILD_BUG_ON(sizeof(SysIB_151x) != 16);
+
/* MMU defines */
#define ASCE_ORIGIN (~0xfffULL) /* segment table origin */
#define ASCE_SUBSPACE 0x200 /* subspace group control */
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 03/13] s390x: topology: CPU topology objects and structures
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
We use new objects to have a dynamic administration of the CPU topology.
The highest level object in this implementation is the s390 book and
in this first implementation of CPU topology for S390 we have a single
book.
The book is built as a SYSBUS bridge during the CPU initialization.
Other objects, sockets and core will be built after the parsing
of the QEMU -smp argument.
Every object under this single book will be build dynamically
immediately after a CPU has be realized if it is needed.
The CPU will fill the sockets once after the other, according to the
number of core per socket defined during the smp parsing.
Each CPU inside a socket will be represented by a bit in a 64bit
unsigned long. Set on plug and clear on unplug of a CPU.
For the S390 CPU topology, thread and cores are merged into
topology cores and the number of topology cores is the multiplication
of cores by the numbers of threads.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 361 ++++++++++++++++++++++++++++++++
hw/s390x/meson.build | 1 +
hw/s390x/s390-virtio-ccw.c | 4 +
include/hw/s390x/cpu-topology.h | 74 +++++++
target/s390x/cpu.h | 47 +++++
5 files changed, 487 insertions(+)
create mode 100644 hw/s390x/cpu-topology.c
create mode 100644 include/hw/s390x/cpu-topology.h
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
new file mode 100644
index 0000000000..b7131b4ac3
--- /dev/null
+++ b/hw/s390x/cpu-topology.c
@@ -0,0 +1,361 @@
+/*
+ * CPU Topology
+ *
+ * Copyright 2021 IBM Corp.
+ * Author(s): Pierre Morel <pmorel@linux.ibm.com>
+
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "hw/sysbus.h"
+#include "hw/s390x/cpu-topology.h"
+#include "hw/qdev-properties.h"
+#include "hw/boards.h"
+#include "qemu/typedefs.h"
+#include "target/s390x/cpu.h"
+#include "hw/s390x/s390-virtio-ccw.h"
+
+static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
+ int origin)
+{
+ DeviceState *dev;
+ S390TopologyCores *cores;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (socket->bus->num_children >= (ms->smp.cores * ms->smp.threads)) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_CORES);
+ qdev_realize_and_unref(dev, socket->bus, &error_fatal);
+
+ cores = S390_TOPOLOGY_CORES(dev);
+ cores->origin = origin;
+ socket->cnt += 1;
+
+ return cores;
+}
+
+static S390TopologySocket *s390_create_socket(S390TopologyBook *book, int id)
+{
+ DeviceState *dev;
+ S390TopologySocket *socket;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (book->bus->num_children >= ms->smp.sockets) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_SOCKET);
+ qdev_realize_and_unref(dev, book->bus, &error_fatal);
+
+ socket = S390_TOPOLOGY_SOCKET(dev);
+ socket->socket_id = id;
+ book->cnt++;
+
+ return socket;
+}
+
+/*
+ * s390_get_cores:
+ * @socket: the socket to search into
+ * @origin: the origin specified for the S390TopologyCores
+ *
+ * returns a pointer to a S390TopologyCores structure within a socket having
+ * the specified origin.
+ * First search if the socket is already containing the S390TopologyCores
+ * structure and if not create one with this origin.
+ */
+static S390TopologyCores *s390_get_cores(S390TopologySocket *socket, int origin)
+{
+ S390TopologyCores *cores;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &socket->bus->children, sibling) {
+ cores = S390_TOPOLOGY_CORES(kid->child);
+ if (cores->origin == origin) {
+ return cores;
+ }
+ }
+ return s390_create_cores(socket, origin);
+}
+
+/*
+ * s390_get_socket:
+ * @book: The book to search into
+ * @socket_id: the identifier of the socket to search for
+ *
+ * returns a pointer to a S390TopologySocket structure within a book having
+ * the specified socket_id.
+ * First search if the book is already containing the S390TopologySocket
+ * structure and if not create one with this socket_id.
+ */
+static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
+ int socket_id)
+{
+ S390TopologySocket *socket;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &book->bus->children, sibling) {
+ socket = S390_TOPOLOGY_SOCKET(kid->child);
+ if (socket->socket_id == socket_id) {
+ return socket;
+ }
+ }
+ return s390_create_socket(book, socket_id);
+}
+
+/*
+ * s390_topology_new_cpu:
+ * @core_id: the core ID is machine wide
+ *
+ * We have a single book returned by s390_get_topology(),
+ * then we build the hierarchy on demand.
+ * Note that we do not destroy the hierarchy on error creating
+ * an entry in the topology, we just keep it empty.
+ * We do not need to worry about not finding a topology level
+ * entry this would have been caught during smp parsing.
+ */
+void s390_topology_new_cpu(int core_id)
+{
+ const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyBook *book;
+ S390TopologySocket *socket;
+ S390TopologyCores *cores;
+ int cores_per_socket, sock_idx;
+ int origin, bit;
+
+ book = s390_get_topology();
+
+ cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
+
+ sock_idx = (core_id / cores_per_socket);
+ socket = s390_get_socket(book, sock_idx);
+
+ /*
+ * At the core level, each CPU is represented by a bit in a 64bit
+ * unsigned long. Set on plug and clear on unplug of a CPU.
+ * The firmware assume that all CPU in the core description have the same
+ * type, polarization and are all dedicated or shared.
+ * In the case a socket contains CPU with different type, polarization
+ * or dedication then they will be defined in different CPU containers.
+ * Currently we assume all CPU are identical and the only reason to have
+ * several S390TopologyCores inside a socket is to have more than 64 CPUs
+ * in that case the origin field, representing the offset of the first CPU
+ * in the CPU container allows to represent up to the maximal number of
+ * CPU inside several CPU containers inside the socket container.
+ */
+ origin = 64 * (core_id / 64);
+
+ cores = s390_get_cores(socket, origin);
+
+ bit = 63 - (core_id - origin);
+ set_bit(bit, &cores->mask);
+ cores->origin = origin;
+}
+
+/*
+ * Setting the first topology: 1 book, 1 socket
+ * This is enough for 64 cores if the topology is flat (single socket)
+ */
+void s390_topology_setup(MachineState *ms)
+{
+ DeviceState *dev;
+
+ /* Create BOOK bridge device */
+ dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ object_property_add_child(qdev_get_machine(),
+ TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+}
+
+S390TopologyBook *s390_get_topology(void)
+{
+ static S390TopologyBook *book;
+
+ if (!book) {
+ book = S390_TOPOLOGY_BOOK(
+ object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
+ assert(book != NULL);
+ }
+
+ return book;
+}
+
+/* --- CORES Definitions --- */
+
+static Property s390_topology_cores_properties[] = {
+ DEFINE_PROP_BOOL("dedicated", S390TopologyCores, dedicated, false),
+ DEFINE_PROP_UINT8("polarity", S390TopologyCores, polarity,
+ S390_TOPOLOGY_POLARITY_H),
+ DEFINE_PROP_UINT8("cputype", S390TopologyCores, cputype,
+ S390_TOPOLOGY_CPU_TYPE),
+ DEFINE_PROP_UINT16("origin", S390TopologyCores, origin, 0),
+ DEFINE_PROP_UINT64("mask", S390TopologyCores, mask, 0),
+ DEFINE_PROP_UINT8("id", S390TopologyCores, id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void cpu_cores_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ device_class_set_props(dc, s390_topology_cores_properties);
+ hc->unplug = qdev_simple_device_unplug_cb;
+ dc->bus_type = TYPE_S390_TOPOLOGY_SOCKET_BUS;
+ dc->desc = "topology cpu entry";
+}
+
+static const TypeInfo cpu_cores_info = {
+ .name = TYPE_S390_TOPOLOGY_CORES,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(S390TopologyCores),
+ .class_init = cpu_cores_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+/* --- SOCKETS Definitions --- */
+static Property s390_topology_socket_properties[] = {
+ DEFINE_PROP_UINT8("socket_id", S390TopologySocket, socket_id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static char *socket_bus_get_dev_path(DeviceState *dev)
+{
+ S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
+ DeviceState *book = dev->parent_bus->parent;
+ char *id = qdev_get_dev_path(book);
+ char *ret;
+
+ if (id) {
+ ret = g_strdup_printf("%s:%02d", id, socket->socket_id);
+ g_free(id);
+ } else {
+ ret = g_strdup_printf("_:%02d", socket->socket_id);
+ }
+
+ return ret;
+}
+
+static void socket_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = socket_bus_get_dev_path;
+ k->max_dev = S390_MAX_SOCKETS;
+}
+
+static const TypeInfo socket_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_SOCKET_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = socket_bus_class_init,
+};
+
+static void s390_socket_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_SOCKET_BUS, dev,
+ TYPE_S390_TOPOLOGY_SOCKET_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ socket->bus = bus;
+}
+
+static void socket_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->bus_type = TYPE_S390_TOPOLOGY_BOOK_BUS;
+ dc->realize = s390_socket_device_realize;
+ device_class_set_props(dc, s390_topology_socket_properties);
+ dc->desc = "topology socket";
+}
+
+static const TypeInfo socket_info = {
+ .name = TYPE_S390_TOPOLOGY_SOCKET,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(S390TopologySocket),
+ .class_init = socket_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+static char *book_bus_get_dev_path(DeviceState *dev)
+{
+ return g_strdup_printf("00");
+}
+
+static void book_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = book_bus_get_dev_path;
+ k->max_dev = S390_MAX_BOOKS;
+}
+
+static const TypeInfo book_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_BOOK_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = book_bus_class_init,
+};
+
+static void s390_book_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyBook *book = S390_TOPOLOGY_BOOK(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_BOOK_BUS, dev,
+ TYPE_S390_TOPOLOGY_BOOK_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ book->bus = bus;
+}
+
+static void book_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_book_device_realize;
+ dc->desc = "topology book";
+}
+
+static const TypeInfo book_info = {
+ .name = TYPE_S390_TOPOLOGY_BOOK,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyBook),
+ .class_init = book_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
+static void topology_register(void)
+{
+ type_register_static(&cpu_cores_info);
+ type_register_static(&socket_bus_info);
+ type_register_static(&socket_info);
+ type_register_static(&book_bus_info);
+ type_register_static(&book_info);
+}
+
+type_init(topology_register);
diff --git a/hw/s390x/meson.build b/hw/s390x/meson.build
index 28484256ec..74678861cf 100644
--- a/hw/s390x/meson.build
+++ b/hw/s390x/meson.build
@@ -2,6 +2,7 @@ s390x_ss = ss.source_set()
s390x_ss.add(files(
'ap-bridge.c',
'ap-device.c',
+ 'cpu-topology.c',
'ccw-device.c',
'css-bridge.c',
'css.c',
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 90480e7cf9..179846e3a3 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -42,6 +42,7 @@
#include "sysemu/sysemu.h"
#include "hw/s390x/pv.h"
#include "migration/blocker.h"
+#include "hw/s390x/cpu-topology.h"
static Error *pv_mig_blocker;
@@ -88,6 +89,7 @@ static void s390_init_cpus(MachineState *machine)
/* initialize possible_cpus */
mc->possible_cpu_arch_ids(machine);
+ s390_topology_setup(machine);
for (i = 0; i < machine->smp.cpus; i++) {
s390x_new_cpu(machine->cpu_type, i, &error_fatal);
}
@@ -305,6 +307,8 @@ static void s390_cpu_plug(HotplugHandler *hotplug_dev,
g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
+ s390_topology_new_cpu(cpu->env.core_id);
+
if (dev->hotplugged) {
raise_irq_cpu_hotplug();
}
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
new file mode 100644
index 0000000000..e6e013a8b8
--- /dev/null
+++ b/include/hw/s390x/cpu-topology.h
@@ -0,0 +1,74 @@
+/*
+ * CPU Topology
+ *
+ * Copyright 2021 IBM Corp.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+#ifndef HW_S390X_CPU_TOPOLOGY_H
+#define HW_S390X_CPU_TOPOLOGY_H
+
+#include "hw/qdev-core.h"
+#include "qom/object.h"
+
+#define S390_TOPOLOGY_CPU_TYPE 0x03
+
+#define S390_TOPOLOGY_POLARITY_H 0x00
+#define S390_TOPOLOGY_POLARITY_VL 0x01
+#define S390_TOPOLOGY_POLARITY_VM 0x02
+#define S390_TOPOLOGY_POLARITY_VH 0x03
+
+#define TYPE_S390_TOPOLOGY_CORES "topology cores"
+ /*
+ * Each CPU inside a socket will be represented by a bit in a 64bit
+ * unsigned long. Set on plug and clear on unplug of a CPU.
+ * All CPU inside a mask share the same dedicated, polarity and
+ * cputype values.
+ * The origin is the offset of the first CPU in a mask.
+ */
+struct S390TopologyCores {
+ DeviceState parent_obj;
+ uint8_t id;
+ bool dedicated;
+ uint8_t polarity;
+ uint8_t cputype;
+ uint16_t origin;
+ uint64_t mask;
+ int cnt;
+};
+typedef struct S390TopologyCores S390TopologyCores;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyCores, S390_TOPOLOGY_CORES)
+
+#define TYPE_S390_TOPOLOGY_SOCKET "topology socket"
+#define TYPE_S390_TOPOLOGY_SOCKET_BUS "socket-bus"
+struct S390TopologySocket {
+ DeviceState parent_obj;
+ BusState *bus;
+ uint8_t socket_id;
+ int cnt;
+};
+typedef struct S390TopologySocket S390TopologySocket;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
+#define S390_MAX_SOCKETS 4
+
+#define TYPE_S390_TOPOLOGY_BOOK "topology book"
+#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
+struct S390TopologyBook {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t book_id;
+ int cnt;
+};
+typedef struct S390TopologyBook S390TopologyBook;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
+#define S390_MAX_BOOKS 1
+
+S390TopologyBook *s390_init_topology(void);
+
+S390TopologyBook *s390_get_topology(void);
+void s390_topology_setup(MachineState *ms);
+void s390_topology_new_cpu(int core_id);
+
+#endif
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index c49c8466e7..f6969b76c5 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -564,6 +564,53 @@ typedef union SysIB {
} SysIB;
QEMU_BUILD_BUG_ON(sizeof(SysIB) != 4096);
+/* CPU type Topology List Entry */
+typedef struct SysIBTl_cpu {
+ uint8_t nl;
+ uint8_t reserved0[3];
+ uint8_t reserved1:5;
+ uint8_t dedicated:1;
+ uint8_t polarity:2;
+ uint8_t type;
+ uint16_t origin;
+ uint64_t mask;
+} SysIBTl_cpu;
+QEMU_BUILD_BUG_ON(sizeof(SysIBTl_cpu) != 16);
+
+/* Container type Topology List Entry */
+typedef struct SysIBTl_container {
+ uint8_t nl;
+ uint8_t reserved[6];
+ uint8_t id;
+} QEMU_PACKED SysIBTl_container;
+QEMU_BUILD_BUG_ON(sizeof(SysIBTl_container) != 8);
+
+/* Generic Topology List Entry */
+typedef union SysIBTl_entry {
+ uint8_t nl;
+ SysIBTl_container container;
+ SysIBTl_cpu cpu;
+} SysIBTl_entry;
+
+#define TOPOLOGY_NR_MAG 6
+#define TOPOLOGY_NR_MAG6 0
+#define TOPOLOGY_NR_MAG5 1
+#define TOPOLOGY_NR_MAG4 2
+#define TOPOLOGY_NR_MAG3 3
+#define TOPOLOGY_NR_MAG2 4
+#define TOPOLOGY_NR_MAG1 5
+/* Configuration topology */
+typedef struct SysIB_151x {
+ uint8_t res0[2];
+ uint16_t length;
+ uint8_t mag[TOPOLOGY_NR_MAG];
+ uint8_t res1;
+ uint8_t mnest;
+ uint32_t res2;
+ SysIBTl_entry tle[0];
+} SysIB_151x;
+QEMU_BUILD_BUG_ON(sizeof(SysIB_151x) != 16);
+
/* MMU defines */
#define ASCE_ORIGIN (~0xfffULL) /* segment table origin */
#define ASCE_SUBSPACE 0x200 /* subspace group control */
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
The handling of STSI is enhanced with the interception of the
function code 15 for storing CPU topology.
Using the objects built during the pluging of CPU, we build the
SYSIB 15_1_x structures.
With this patch the maximum MNEST level is 2, this is also
the only level allowed and only SYSIB 15_1_2 will be built.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 12 ++--
target/s390x/cpu.h | 1 +
target/s390x/cpu_topology.c | 112 ++++++++++++++++++++++++++++++++++++
target/s390x/kvm/kvm.c | 5 ++
target/s390x/meson.build | 1 +
5 files changed, 124 insertions(+), 7 deletions(-)
create mode 100644 target/s390x/cpu_topology.c
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index b7131b4ac3..74e04fd68e 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -127,15 +127,14 @@ void s390_topology_new_cpu(int core_id)
S390TopologyBook *book;
S390TopologySocket *socket;
S390TopologyCores *cores;
- int cores_per_socket, sock_idx;
int origin, bit;
+ int nb_cores_per_socket;
book = s390_get_topology();
- cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
-
- sock_idx = (core_id / cores_per_socket);
- socket = s390_get_socket(book, sock_idx);
+ /* Cores for the S390 topology are cores and threads of the QEMU topology */
+ nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
+ socket = s390_get_socket(book, core_id / nb_cores_per_socket);
/*
* At the core level, each CPU is represented by a bit in a 64bit
@@ -151,12 +150,11 @@ void s390_topology_new_cpu(int core_id)
* CPU inside several CPU containers inside the socket container.
*/
origin = 64 * (core_id / 64);
-
cores = s390_get_cores(socket, origin);
+ cores->origin = origin;
bit = 63 - (core_id - origin);
set_bit(bit, &cores->mask);
- cores->origin = origin;
}
/*
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index f6969b76c5..a617c943ff 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
#include "exec/cpu-all.h"
+void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
#endif
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
new file mode 100644
index 0000000000..7f6db18829
--- /dev/null
+++ b/target/s390x/cpu_topology.c
@@ -0,0 +1,112 @@
+/*
+ * QEMU S390x CPU Topology
+ *
+ * Copyright IBM Corp. 2021
+ * Author(s): Pierre Morel <pmorel@linux.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "hw/s390x/pv.h"
+#include "hw/sysbus.h"
+#include "hw/s390x/cpu-topology.h"
+
+static int stsi_15_container(void *p, int nl, int id)
+{
+ SysIBTl_container *tle = (SysIBTl_container *)p;
+
+ tle->nl = nl;
+ tle->id = id;
+
+ return sizeof(*tle);
+}
+
+static int stsi_15_cpus(void *p, S390TopologyCores *cd)
+{
+ SysIBTl_cpu *tle = (SysIBTl_cpu *)p;
+
+ tle->nl = 0;
+ tle->dedicated = cd->dedicated;
+ tle->polarity = cd->polarity;
+ tle->type = cd->cputype;
+ tle->origin = be16_to_cpu(cd->origin);
+ tle->mask = be64_to_cpu(cd->mask);
+
+ return sizeof(*tle);
+}
+
+static int set_socket(const MachineState *ms, void *p,
+ S390TopologySocket *socket)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ len += stsi_15_container(p, 1, socket->socket_id);
+ p += len;
+
+ QTAILQ_FOREACH_REVERSE(kid, &socket->bus->children, sibling) {
+ l = stsi_15_cpus(p, S390_TOPOLOGY_CORES(kid->child));
+ p += l;
+ len += l;
+ }
+ return len;
+}
+
+static void setup_stsi(const MachineState *ms, void *p, int level)
+{
+ S390TopologyBook *book;
+ SysIB_151x *sysib;
+ BusChild *kid;
+ int len, l;
+
+ sysib = (SysIB_151x *)p;
+ sysib->mnest = level;
+ sysib->mag[TOPOLOGY_NR_MAG2] = ms->smp.sockets;
+ sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
+
+ book = s390_get_topology();
+ len = sizeof(SysIB_151x);
+ p += len;
+
+ QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
+ l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child));
+ p += l;
+ len += l;
+ }
+
+ sysib->length = be16_to_cpu(len);
+}
+
+void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
+{
+ const MachineState *machine = MACHINE(qdev_get_machine());
+ void *p;
+ int ret, cc;
+
+ /*
+ * Until the SCLP STSI Facility reporting the MNEST value is used,
+ * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
+ */
+ if (sel2 != 2) {
+ setcc(cpu, 3);
+ return;
+ }
+
+ p = g_malloc0(TARGET_PAGE_SIZE);
+
+ setup_stsi(machine, p, 2);
+
+ if (s390_is_pv()) {
+ ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
+ } else {
+ ret = s390_cpu_virt_mem_write(cpu, addr, ar, p, TARGET_PAGE_SIZE);
+ }
+ cc = ret ? 3 : 0;
+ setcc(cpu, cc);
+ g_free(p);
+}
+
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 6acf14d5ec..27b3fbfa09 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -52,6 +52,7 @@
#include "hw/s390x/s390-virtio-ccw.h"
#include "hw/s390x/s390-virtio-hcall.h"
#include "hw/s390x/pv.h"
+#include "hw/s390x/cpu-topology.h"
#ifndef DEBUG_KVM
#define DEBUG_KVM 0
@@ -1910,6 +1911,10 @@ static int handle_stsi(S390CPU *cpu)
/* Only sysib 3.2.2 needs post-handling for now. */
insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
return 0;
+ case 15:
+ insert_stsi_15_1_x(cpu, run->s390_stsi.sel2, run->s390_stsi.addr,
+ run->s390_stsi.ar);
+ return 0;
default:
return 0;
}
diff --git a/target/s390x/meson.build b/target/s390x/meson.build
index 84c1402a6a..890ccfa789 100644
--- a/target/s390x/meson.build
+++ b/target/s390x/meson.build
@@ -29,6 +29,7 @@ s390x_softmmu_ss.add(files(
'sigp.c',
'cpu-sysemu.c',
'cpu_models_sysemu.c',
+ 'cpu_topology.c',
))
s390x_user_ss = ss.source_set()
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
The handling of STSI is enhanced with the interception of the
function code 15 for storing CPU topology.
Using the objects built during the pluging of CPU, we build the
SYSIB 15_1_x structures.
With this patch the maximum MNEST level is 2, this is also
the only level allowed and only SYSIB 15_1_2 will be built.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 12 ++--
target/s390x/cpu.h | 1 +
target/s390x/cpu_topology.c | 112 ++++++++++++++++++++++++++++++++++++
target/s390x/kvm/kvm.c | 5 ++
target/s390x/meson.build | 1 +
5 files changed, 124 insertions(+), 7 deletions(-)
create mode 100644 target/s390x/cpu_topology.c
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index b7131b4ac3..74e04fd68e 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -127,15 +127,14 @@ void s390_topology_new_cpu(int core_id)
S390TopologyBook *book;
S390TopologySocket *socket;
S390TopologyCores *cores;
- int cores_per_socket, sock_idx;
int origin, bit;
+ int nb_cores_per_socket;
book = s390_get_topology();
- cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
-
- sock_idx = (core_id / cores_per_socket);
- socket = s390_get_socket(book, sock_idx);
+ /* Cores for the S390 topology are cores and threads of the QEMU topology */
+ nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
+ socket = s390_get_socket(book, core_id / nb_cores_per_socket);
/*
* At the core level, each CPU is represented by a bit in a 64bit
@@ -151,12 +150,11 @@ void s390_topology_new_cpu(int core_id)
* CPU inside several CPU containers inside the socket container.
*/
origin = 64 * (core_id / 64);
-
cores = s390_get_cores(socket, origin);
+ cores->origin = origin;
bit = 63 - (core_id - origin);
set_bit(bit, &cores->mask);
- cores->origin = origin;
}
/*
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index f6969b76c5..a617c943ff 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
#include "exec/cpu-all.h"
+void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
#endif
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
new file mode 100644
index 0000000000..7f6db18829
--- /dev/null
+++ b/target/s390x/cpu_topology.c
@@ -0,0 +1,112 @@
+/*
+ * QEMU S390x CPU Topology
+ *
+ * Copyright IBM Corp. 2021
+ * Author(s): Pierre Morel <pmorel@linux.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "hw/s390x/pv.h"
+#include "hw/sysbus.h"
+#include "hw/s390x/cpu-topology.h"
+
+static int stsi_15_container(void *p, int nl, int id)
+{
+ SysIBTl_container *tle = (SysIBTl_container *)p;
+
+ tle->nl = nl;
+ tle->id = id;
+
+ return sizeof(*tle);
+}
+
+static int stsi_15_cpus(void *p, S390TopologyCores *cd)
+{
+ SysIBTl_cpu *tle = (SysIBTl_cpu *)p;
+
+ tle->nl = 0;
+ tle->dedicated = cd->dedicated;
+ tle->polarity = cd->polarity;
+ tle->type = cd->cputype;
+ tle->origin = be16_to_cpu(cd->origin);
+ tle->mask = be64_to_cpu(cd->mask);
+
+ return sizeof(*tle);
+}
+
+static int set_socket(const MachineState *ms, void *p,
+ S390TopologySocket *socket)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ len += stsi_15_container(p, 1, socket->socket_id);
+ p += len;
+
+ QTAILQ_FOREACH_REVERSE(kid, &socket->bus->children, sibling) {
+ l = stsi_15_cpus(p, S390_TOPOLOGY_CORES(kid->child));
+ p += l;
+ len += l;
+ }
+ return len;
+}
+
+static void setup_stsi(const MachineState *ms, void *p, int level)
+{
+ S390TopologyBook *book;
+ SysIB_151x *sysib;
+ BusChild *kid;
+ int len, l;
+
+ sysib = (SysIB_151x *)p;
+ sysib->mnest = level;
+ sysib->mag[TOPOLOGY_NR_MAG2] = ms->smp.sockets;
+ sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
+
+ book = s390_get_topology();
+ len = sizeof(SysIB_151x);
+ p += len;
+
+ QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
+ l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child));
+ p += l;
+ len += l;
+ }
+
+ sysib->length = be16_to_cpu(len);
+}
+
+void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
+{
+ const MachineState *machine = MACHINE(qdev_get_machine());
+ void *p;
+ int ret, cc;
+
+ /*
+ * Until the SCLP STSI Facility reporting the MNEST value is used,
+ * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
+ */
+ if (sel2 != 2) {
+ setcc(cpu, 3);
+ return;
+ }
+
+ p = g_malloc0(TARGET_PAGE_SIZE);
+
+ setup_stsi(machine, p, 2);
+
+ if (s390_is_pv()) {
+ ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
+ } else {
+ ret = s390_cpu_virt_mem_write(cpu, addr, ar, p, TARGET_PAGE_SIZE);
+ }
+ cc = ret ? 3 : 0;
+ setcc(cpu, cc);
+ g_free(p);
+}
+
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 6acf14d5ec..27b3fbfa09 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -52,6 +52,7 @@
#include "hw/s390x/s390-virtio-ccw.h"
#include "hw/s390x/s390-virtio-hcall.h"
#include "hw/s390x/pv.h"
+#include "hw/s390x/cpu-topology.h"
#ifndef DEBUG_KVM
#define DEBUG_KVM 0
@@ -1910,6 +1911,10 @@ static int handle_stsi(S390CPU *cpu)
/* Only sysib 3.2.2 needs post-handling for now. */
insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
return 0;
+ case 15:
+ insert_stsi_15_1_x(cpu, run->s390_stsi.sel2, run->s390_stsi.addr,
+ run->s390_stsi.ar);
+ return 0;
default:
return 0;
}
diff --git a/target/s390x/meson.build b/target/s390x/meson.build
index 84c1402a6a..890ccfa789 100644
--- a/target/s390x/meson.build
+++ b/target/s390x/meson.build
@@ -29,6 +29,7 @@ s390x_softmmu_ss.add(files(
'sigp.c',
'cpu-sysemu.c',
'cpu_models_sysemu.c',
+ 'cpu_topology.c',
))
s390x_user_ss = ss.source_set()
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 05/13] s390x: topology: Adding books to CPU topology
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
S390 CPU topology may have up to 5 topology containers.
The first container above the cores is level 2, the sockets.
We introduce here the books, book is the level containing sockets.
Let's add books, level3, containers to the CPU topology.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine-smp.c | 29 ++++++++++++++++++++++-------
hw/core/machine.c | 2 ++
hw/s390x/s390-virtio-ccw.c | 1 +
include/hw/boards.h | 4 ++++
qapi/machine.json | 9 +++++++--
qemu-options.hx | 5 +++--
softmmu/vl.c | 3 +++
7 files changed, 42 insertions(+), 11 deletions(-)
diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c
index b39ed21e65..d7aa39d540 100644
--- a/hw/core/machine-smp.c
+++ b/hw/core/machine-smp.c
@@ -31,6 +31,10 @@ static char *cpu_hierarchy_to_string(MachineState *ms)
MachineClass *mc = MACHINE_GET_CLASS(ms);
GString *s = g_string_new(NULL);
+ if (mc->smp_props.books_supported) {
+ g_string_append_printf(s, " * books (%u)", ms->smp.books);
+ }
+
g_string_append_printf(s, "sockets (%u)", ms->smp.sockets);
if (mc->smp_props.dies_supported) {
@@ -73,6 +77,7 @@ void machine_parse_smp_config(MachineState *ms,
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
unsigned cpus = config->has_cpus ? config->cpus : 0;
+ unsigned books = config->has_books ? config->books : 0;
unsigned sockets = config->has_sockets ? config->sockets : 0;
unsigned dies = config->has_dies ? config->dies : 0;
unsigned clusters = config->has_clusters ? config->clusters : 0;
@@ -85,6 +90,7 @@ void machine_parse_smp_config(MachineState *ms,
* explicit configuration like "cpus=0" is not allowed.
*/
if ((config->has_cpus && config->cpus == 0) ||
+ (config->has_books && config->books == 0) ||
(config->has_sockets && config->sockets == 0) ||
(config->has_dies && config->dies == 0) ||
(config->has_clusters && config->clusters == 0) ||
@@ -111,6 +117,13 @@ void machine_parse_smp_config(MachineState *ms,
dies = dies > 0 ? dies : 1;
clusters = clusters > 0 ? clusters : 1;
+ if (!mc->smp_props.books_supported && books > 1) {
+ error_setg(errp, "books not supported by this machine's CPU topology");
+ return;
+ }
+
+ books = books > 0 ? books : 1;
+
/* compute missing values based on the provided ones */
if (cpus == 0 && maxcpus == 0) {
sockets = sockets > 0 ? sockets : 1;
@@ -124,33 +137,35 @@ void machine_parse_smp_config(MachineState *ms,
if (sockets == 0) {
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (dies * clusters * cores * threads);
+ sockets = maxcpus / (books * dies * clusters * cores * threads);
} else if (cores == 0) {
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (sockets * dies * clusters * threads);
+ cores = maxcpus / (books * sockets * dies * clusters * threads);
}
} else {
/* prefer cores over sockets since 6.2 */
if (cores == 0) {
sockets = sockets > 0 ? sockets : 1;
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (sockets * dies * clusters * threads);
+ cores = maxcpus / (books * sockets * dies * clusters * threads);
} else if (sockets == 0) {
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (dies * clusters * cores * threads);
+ sockets = maxcpus / (books * dies * clusters * cores * threads);
}
}
/* try to calculate omitted threads at last */
if (threads == 0) {
- threads = maxcpus / (sockets * dies * clusters * cores);
+ threads = maxcpus / (books * sockets * dies * clusters * cores);
}
}
- maxcpus = maxcpus > 0 ? maxcpus : sockets * dies * clusters * cores * threads;
+ maxcpus = maxcpus > 0 ? maxcpus : books * sockets * dies *
+ clusters * cores * threads;
cpus = cpus > 0 ? cpus : maxcpus;
ms->smp.cpus = cpus;
+ ms->smp.books = books;
ms->smp.sockets = sockets;
ms->smp.dies = dies;
ms->smp.clusters = clusters;
@@ -159,7 +174,7 @@ void machine_parse_smp_config(MachineState *ms,
ms->smp.max_cpus = maxcpus;
/* sanity-check of the computed topology */
- if (sockets * dies * clusters * cores * threads != maxcpus) {
+ if (books * sockets * dies * clusters * cores * threads != maxcpus) {
g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
error_setg(errp, "Invalid CPU topology: "
"product of the hierarchy must match maxcpus: "
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 1e23fdc14b..22691fb8b6 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -745,6 +745,7 @@ static void machine_get_smp(Object *obj, Visitor *v, const char *name,
MachineState *ms = MACHINE(obj);
SMPConfiguration *config = &(SMPConfiguration){
.has_cpus = true, .cpus = ms->smp.cpus,
+ .has_books = true, .books = ms->smp.books,
.has_sockets = true, .sockets = ms->smp.sockets,
.has_dies = true, .dies = ms->smp.dies,
.has_clusters = true, .clusters = ms->smp.clusters,
@@ -937,6 +938,7 @@ static void machine_initfn(Object *obj)
/* default to mc->default_cpus */
ms->smp.cpus = mc->default_cpus;
ms->smp.max_cpus = mc->default_cpus;
+ ms->smp.books = 1;
ms->smp.sockets = 1;
ms->smp.dies = 1;
ms->smp.clusters = 1;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 179846e3a3..b8f19aa6d6 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -616,6 +616,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
hc->unplug_request = s390_machine_device_unplug_request;
nc->nmi_monitor_handler = s390_nmi;
mc->default_ram_id = "s390.ram";
+ mc->smp_props.books_supported = true;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index c92ac8815c..bc0f7f22dc 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -130,11 +130,13 @@ typedef struct {
* @prefer_sockets - whether sockets are preferred over cores in smp parsing
* @dies_supported - whether dies are supported by the machine
* @clusters_supported - whether clusters are supported by the machine
+ * @books_supported - whether books are supported by the machine
*/
typedef struct {
bool prefer_sockets;
bool dies_supported;
bool clusters_supported;
+ bool books_supported;
} SMPCompatProps;
/**
@@ -299,6 +301,7 @@ typedef struct DeviceMemoryState {
/**
* CpuTopology:
* @cpus: the number of present logical processors on the machine
+ * @books: the number of books on the machine
* @sockets: the number of sockets on the machine
* @dies: the number of dies in one socket
* @clusters: the number of clusters in one die
@@ -308,6 +311,7 @@ typedef struct DeviceMemoryState {
*/
typedef struct CpuTopology {
unsigned int cpus;
+ unsigned int books;
unsigned int sockets;
unsigned int dies;
unsigned int clusters;
diff --git a/qapi/machine.json b/qapi/machine.json
index d25a481ce4..7023d72c79 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -866,12 +866,13 @@
# a CPU is being hotplugged.
#
# @node-id: NUMA node ID the CPU belongs to
-# @socket-id: socket number within node/board the CPU belongs to
+# @book-id: book number within node/board the CPU belongs to
+# @socket-id: socket number within book/node/board the CPU belongs to
# @die-id: die number within socket the CPU belongs to (since 4.1)
# @core-id: core number within die the CPU belongs to
# @thread-id: thread number within core the CPU belongs to
#
-# Note: currently there are 5 properties that could be present
+# Note: currently there are 6 properties that could be present
# but management should be prepared to pass through other
# properties with device_add command to allow for future
# interface extension. This also requires the filed names to be kept in
@@ -881,6 +882,7 @@
##
{ 'struct': 'CpuInstanceProperties',
'data': { '*node-id': 'int',
+ '*book-id': 'int',
'*socket-id': 'int',
'*die-id': 'int',
'*core-id': 'int',
@@ -1401,6 +1403,8 @@
#
# @cpus: number of virtual CPUs in the virtual machine
#
+# @books: number of books in the CPU topology
+#
# @sockets: number of sockets in the CPU topology
#
# @dies: number of dies per socket in the CPU topology
@@ -1417,6 +1421,7 @@
##
{ 'struct': 'SMPConfiguration', 'data': {
'*cpus': 'int',
+ '*books': 'int',
'*sockets': 'int',
'*dies': 'int',
'*clusters': 'int',
diff --git a/qemu-options.hx b/qemu-options.hx
index 34e9b32a5c..c4de33d419 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -206,11 +206,12 @@ SRST
ERST
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
- "-smp [[cpus=]n][,maxcpus=maxcpus][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
+ "-smp [[cpus=]n][,maxcpus=maxcpus][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
" set the number of initial CPUs to 'n' [default=1]\n"
" maxcpus= maximum number of total CPUs, including\n"
" offline CPUs for hotplug, etc\n"
- " sockets= number of sockets on the machine board\n"
+ " books= number of books on the machine board\n"
+ " sockets= number of sockets in one book\n"
" dies= number of dies in one socket\n"
" clusters= number of clusters in one die\n"
" cores= number of cores in one cluster\n"
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 6f646531a0..1d34ab8e3a 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -721,6 +721,9 @@ static QemuOptsList qemu_smp_opts = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
+ }, {
+ .name = "books",
+ .type = QEMU_OPT_NUMBER,
}, {
.name = "sockets",
.type = QEMU_OPT_NUMBER,
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 05/13] s390x: topology: Adding books to CPU topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
S390 CPU topology may have up to 5 topology containers.
The first container above the cores is level 2, the sockets.
We introduce here the books, book is the level containing sockets.
Let's add books, level3, containers to the CPU topology.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine-smp.c | 29 ++++++++++++++++++++++-------
hw/core/machine.c | 2 ++
hw/s390x/s390-virtio-ccw.c | 1 +
include/hw/boards.h | 4 ++++
qapi/machine.json | 9 +++++++--
qemu-options.hx | 5 +++--
softmmu/vl.c | 3 +++
7 files changed, 42 insertions(+), 11 deletions(-)
diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c
index b39ed21e65..d7aa39d540 100644
--- a/hw/core/machine-smp.c
+++ b/hw/core/machine-smp.c
@@ -31,6 +31,10 @@ static char *cpu_hierarchy_to_string(MachineState *ms)
MachineClass *mc = MACHINE_GET_CLASS(ms);
GString *s = g_string_new(NULL);
+ if (mc->smp_props.books_supported) {
+ g_string_append_printf(s, " * books (%u)", ms->smp.books);
+ }
+
g_string_append_printf(s, "sockets (%u)", ms->smp.sockets);
if (mc->smp_props.dies_supported) {
@@ -73,6 +77,7 @@ void machine_parse_smp_config(MachineState *ms,
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
unsigned cpus = config->has_cpus ? config->cpus : 0;
+ unsigned books = config->has_books ? config->books : 0;
unsigned sockets = config->has_sockets ? config->sockets : 0;
unsigned dies = config->has_dies ? config->dies : 0;
unsigned clusters = config->has_clusters ? config->clusters : 0;
@@ -85,6 +90,7 @@ void machine_parse_smp_config(MachineState *ms,
* explicit configuration like "cpus=0" is not allowed.
*/
if ((config->has_cpus && config->cpus == 0) ||
+ (config->has_books && config->books == 0) ||
(config->has_sockets && config->sockets == 0) ||
(config->has_dies && config->dies == 0) ||
(config->has_clusters && config->clusters == 0) ||
@@ -111,6 +117,13 @@ void machine_parse_smp_config(MachineState *ms,
dies = dies > 0 ? dies : 1;
clusters = clusters > 0 ? clusters : 1;
+ if (!mc->smp_props.books_supported && books > 1) {
+ error_setg(errp, "books not supported by this machine's CPU topology");
+ return;
+ }
+
+ books = books > 0 ? books : 1;
+
/* compute missing values based on the provided ones */
if (cpus == 0 && maxcpus == 0) {
sockets = sockets > 0 ? sockets : 1;
@@ -124,33 +137,35 @@ void machine_parse_smp_config(MachineState *ms,
if (sockets == 0) {
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (dies * clusters * cores * threads);
+ sockets = maxcpus / (books * dies * clusters * cores * threads);
} else if (cores == 0) {
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (sockets * dies * clusters * threads);
+ cores = maxcpus / (books * sockets * dies * clusters * threads);
}
} else {
/* prefer cores over sockets since 6.2 */
if (cores == 0) {
sockets = sockets > 0 ? sockets : 1;
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (sockets * dies * clusters * threads);
+ cores = maxcpus / (books * sockets * dies * clusters * threads);
} else if (sockets == 0) {
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (dies * clusters * cores * threads);
+ sockets = maxcpus / (books * dies * clusters * cores * threads);
}
}
/* try to calculate omitted threads at last */
if (threads == 0) {
- threads = maxcpus / (sockets * dies * clusters * cores);
+ threads = maxcpus / (books * sockets * dies * clusters * cores);
}
}
- maxcpus = maxcpus > 0 ? maxcpus : sockets * dies * clusters * cores * threads;
+ maxcpus = maxcpus > 0 ? maxcpus : books * sockets * dies *
+ clusters * cores * threads;
cpus = cpus > 0 ? cpus : maxcpus;
ms->smp.cpus = cpus;
+ ms->smp.books = books;
ms->smp.sockets = sockets;
ms->smp.dies = dies;
ms->smp.clusters = clusters;
@@ -159,7 +174,7 @@ void machine_parse_smp_config(MachineState *ms,
ms->smp.max_cpus = maxcpus;
/* sanity-check of the computed topology */
- if (sockets * dies * clusters * cores * threads != maxcpus) {
+ if (books * sockets * dies * clusters * cores * threads != maxcpus) {
g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
error_setg(errp, "Invalid CPU topology: "
"product of the hierarchy must match maxcpus: "
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 1e23fdc14b..22691fb8b6 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -745,6 +745,7 @@ static void machine_get_smp(Object *obj, Visitor *v, const char *name,
MachineState *ms = MACHINE(obj);
SMPConfiguration *config = &(SMPConfiguration){
.has_cpus = true, .cpus = ms->smp.cpus,
+ .has_books = true, .books = ms->smp.books,
.has_sockets = true, .sockets = ms->smp.sockets,
.has_dies = true, .dies = ms->smp.dies,
.has_clusters = true, .clusters = ms->smp.clusters,
@@ -937,6 +938,7 @@ static void machine_initfn(Object *obj)
/* default to mc->default_cpus */
ms->smp.cpus = mc->default_cpus;
ms->smp.max_cpus = mc->default_cpus;
+ ms->smp.books = 1;
ms->smp.sockets = 1;
ms->smp.dies = 1;
ms->smp.clusters = 1;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 179846e3a3..b8f19aa6d6 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -616,6 +616,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
hc->unplug_request = s390_machine_device_unplug_request;
nc->nmi_monitor_handler = s390_nmi;
mc->default_ram_id = "s390.ram";
+ mc->smp_props.books_supported = true;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index c92ac8815c..bc0f7f22dc 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -130,11 +130,13 @@ typedef struct {
* @prefer_sockets - whether sockets are preferred over cores in smp parsing
* @dies_supported - whether dies are supported by the machine
* @clusters_supported - whether clusters are supported by the machine
+ * @books_supported - whether books are supported by the machine
*/
typedef struct {
bool prefer_sockets;
bool dies_supported;
bool clusters_supported;
+ bool books_supported;
} SMPCompatProps;
/**
@@ -299,6 +301,7 @@ typedef struct DeviceMemoryState {
/**
* CpuTopology:
* @cpus: the number of present logical processors on the machine
+ * @books: the number of books on the machine
* @sockets: the number of sockets on the machine
* @dies: the number of dies in one socket
* @clusters: the number of clusters in one die
@@ -308,6 +311,7 @@ typedef struct DeviceMemoryState {
*/
typedef struct CpuTopology {
unsigned int cpus;
+ unsigned int books;
unsigned int sockets;
unsigned int dies;
unsigned int clusters;
diff --git a/qapi/machine.json b/qapi/machine.json
index d25a481ce4..7023d72c79 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -866,12 +866,13 @@
# a CPU is being hotplugged.
#
# @node-id: NUMA node ID the CPU belongs to
-# @socket-id: socket number within node/board the CPU belongs to
+# @book-id: book number within node/board the CPU belongs to
+# @socket-id: socket number within book/node/board the CPU belongs to
# @die-id: die number within socket the CPU belongs to (since 4.1)
# @core-id: core number within die the CPU belongs to
# @thread-id: thread number within core the CPU belongs to
#
-# Note: currently there are 5 properties that could be present
+# Note: currently there are 6 properties that could be present
# but management should be prepared to pass through other
# properties with device_add command to allow for future
# interface extension. This also requires the filed names to be kept in
@@ -881,6 +882,7 @@
##
{ 'struct': 'CpuInstanceProperties',
'data': { '*node-id': 'int',
+ '*book-id': 'int',
'*socket-id': 'int',
'*die-id': 'int',
'*core-id': 'int',
@@ -1401,6 +1403,8 @@
#
# @cpus: number of virtual CPUs in the virtual machine
#
+# @books: number of books in the CPU topology
+#
# @sockets: number of sockets in the CPU topology
#
# @dies: number of dies per socket in the CPU topology
@@ -1417,6 +1421,7 @@
##
{ 'struct': 'SMPConfiguration', 'data': {
'*cpus': 'int',
+ '*books': 'int',
'*sockets': 'int',
'*dies': 'int',
'*clusters': 'int',
diff --git a/qemu-options.hx b/qemu-options.hx
index 34e9b32a5c..c4de33d419 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -206,11 +206,12 @@ SRST
ERST
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
- "-smp [[cpus=]n][,maxcpus=maxcpus][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
+ "-smp [[cpus=]n][,maxcpus=maxcpus][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
" set the number of initial CPUs to 'n' [default=1]\n"
" maxcpus= maximum number of total CPUs, including\n"
" offline CPUs for hotplug, etc\n"
- " sockets= number of sockets on the machine board\n"
+ " books= number of books on the machine board\n"
+ " sockets= number of sockets in one book\n"
" dies= number of dies in one socket\n"
" clusters= number of clusters in one die\n"
" cores= number of cores in one cluster\n"
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 6f646531a0..1d34ab8e3a 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -721,6 +721,9 @@ static QemuOptsList qemu_smp_opts = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
+ }, {
+ .name = "books",
+ .type = QEMU_OPT_NUMBER,
}, {
.name = "sockets",
.type = QEMU_OPT_NUMBER,
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 06/13] s390x: topology: Adding books to STSI
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
Let's add STSI support for the container level 3, books,
and provide the information back to the guest.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 147 +++++++++++++++++++++++++++++---
include/hw/s390x/cpu-topology.h | 20 ++++-
include/hw/s390x/sclp.h | 1 +
target/s390x/cpu_topology.c | 53 +++++++++---
4 files changed, 194 insertions(+), 27 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 74e04fd68e..4705a2af96 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -61,6 +61,26 @@ static S390TopologySocket *s390_create_socket(S390TopologyBook *book, int id)
return socket;
}
+static S390TopologyBook *s390_create_book(S390TopologyDrawer *drawer, int id)
+{
+ DeviceState *dev;
+ S390TopologyBook *book;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (drawer->bus->num_children >= ms->smp.books) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ qdev_realize_and_unref(dev, drawer->bus, &error_fatal);
+
+ book = S390_TOPOLOGY_BOOK(dev);
+ book->book_id = id;
+ drawer->cnt++;
+
+ return book;
+}
+
/*
* s390_get_cores:
* @socket: the socket to search into
@@ -110,6 +130,31 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
return s390_create_socket(book, socket_id);
}
+/*
+ * s390_get_book:
+ * @drawer: The drawer to search into
+ * @book_id: the identifier of the book to search for
+ *
+ * returns a pointer to a S390TopologySocket structure within a drawer having
+ * the specified book_id.
+ * First search if the drawer is already containing the S390TopologySocket
+ * structure and if not create one with this book_id.
+ */
+static S390TopologyBook *s390_get_book(S390TopologyDrawer *drawer,
+ int book_id)
+{
+ S390TopologyBook *book;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &drawer->bus->children, sibling) {
+ book = S390_TOPOLOGY_BOOK(kid->child);
+ if (book->book_id == book_id) {
+ return book;
+ }
+ }
+ return s390_create_book(drawer, book_id);
+}
+
/*
* s390_topology_new_cpu:
* @core_id: the core ID is machine wide
@@ -124,16 +169,21 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
void s390_topology_new_cpu(int core_id)
{
const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyDrawer *drawer;
S390TopologyBook *book;
S390TopologySocket *socket;
S390TopologyCores *cores;
int origin, bit;
int nb_cores_per_socket;
+ int nb_cores_per_book;
- book = s390_get_topology();
+ drawer = s390_get_topology();
/* Cores for the S390 topology are cores and threads of the QEMU topology */
nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
+ nb_cores_per_book = ms->smp.sockets * nb_cores_per_socket;
+
+ book = s390_get_book(drawer, core_id / nb_cores_per_book);
socket = s390_get_socket(book, core_id / nb_cores_per_socket);
/*
@@ -166,23 +216,23 @@ void s390_topology_setup(MachineState *ms)
DeviceState *dev;
/* Create BOOK bridge device */
- dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
object_property_add_child(qdev_get_machine(),
- TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
+ TYPE_S390_TOPOLOGY_DRAWER, OBJECT(dev));
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
}
-S390TopologyBook *s390_get_topology(void)
+S390TopologyDrawer *s390_get_topology(void)
{
- static S390TopologyBook *book;
+ static S390TopologyDrawer *drawer;
- if (!book) {
- book = S390_TOPOLOGY_BOOK(
- object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
- assert(book != NULL);
+ if (!drawer) {
+ drawer = S390_TOPOLOGY_DRAWER(object_resolve_path(
+ TYPE_S390_TOPOLOGY_DRAWER, NULL));
+ assert(drawer != NULL);
}
- return book;
+ return drawer;
}
/* --- CORES Definitions --- */
@@ -333,12 +383,13 @@ static void book_class_init(ObjectClass *oc, void *data)
hc->unplug = qdev_simple_device_unplug_cb;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->realize = s390_book_device_realize;
+ dc->bus_type = TYPE_S390_TOPOLOGY_DRAWER_BUS;
dc->desc = "topology book";
}
static const TypeInfo book_info = {
.name = TYPE_S390_TOPOLOGY_BOOK,
- .parent = TYPE_SYS_BUS_DEVICE,
+ .parent = TYPE_DEVICE,
.instance_size = sizeof(S390TopologyBook),
.class_init = book_class_init,
.interfaces = (InterfaceInfo[]) {
@@ -347,6 +398,78 @@ static const TypeInfo book_info = {
}
};
+/* --- DRAWER Definitions --- */
+static Property s390_topology_drawer_properties[] = {
+ DEFINE_PROP_UINT8("drawer_id", S390TopologyDrawer, drawer_id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static char *drawer_bus_get_dev_path(DeviceState *dev)
+{
+ S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
+ DeviceState *node = dev->parent_bus->parent;
+ char *id = qdev_get_dev_path(node);
+ char *ret;
+
+ if (id) {
+ ret = g_strdup_printf("%s:%02d", id, drawer->drawer_id);
+ g_free(id);
+ } else {
+ ret = g_malloc(6);
+ snprintf(ret, 6, "_:%02d", drawer->drawer_id);
+ }
+
+ return ret;
+}
+
+static void drawer_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = drawer_bus_get_dev_path;
+ k->max_dev = S390_MAX_DRAWERS;
+}
+
+static const TypeInfo drawer_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_DRAWER_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = drawer_bus_class_init,
+};
+
+static void s390_drawer_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_DRAWER_BUS, dev,
+ TYPE_S390_TOPOLOGY_DRAWER_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ drawer->bus = bus;
+}
+
+static void drawer_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_drawer_device_realize;
+ device_class_set_props(dc, s390_topology_drawer_properties);
+ dc->desc = "topology drawer";
+}
+
+static const TypeInfo drawer_info = {
+ .name = TYPE_S390_TOPOLOGY_DRAWER,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyDrawer),
+ .class_init = drawer_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
static void topology_register(void)
{
type_register_static(&cpu_cores_info);
@@ -354,6 +477,8 @@ static void topology_register(void)
type_register_static(&socket_info);
type_register_static(&book_bus_info);
type_register_static(&book_info);
+ type_register_static(&drawer_bus_info);
+ type_register_static(&drawer_info);
}
type_init(topology_register);
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index e6e013a8b8..78017c3d78 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -56,18 +56,30 @@ OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
#define TYPE_S390_TOPOLOGY_BOOK "topology book"
#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
struct S390TopologyBook {
- SysBusDevice parent_obj;
+ DeviceState parent_obj;
BusState *bus;
uint8_t book_id;
int cnt;
};
typedef struct S390TopologyBook S390TopologyBook;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
-#define S390_MAX_BOOKS 1
+#define S390_MAX_BOOKS 4
+
+#define TYPE_S390_TOPOLOGY_DRAWER "topology drawer"
+#define TYPE_S390_TOPOLOGY_DRAWER_BUS "drawer-bus"
+struct S390TopologyDrawer {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t drawer_id;
+ int cnt;
+};
+typedef struct S390TopologyDrawer S390TopologyDrawer;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyDrawer, S390_TOPOLOGY_DRAWER)
+#define S390_MAX_DRAWERS 1
-S390TopologyBook *s390_init_topology(void);
+S390TopologyDrawer *s390_init_topology(void);
-S390TopologyBook *s390_get_topology(void);
+S390TopologyDrawer *s390_get_topology(void);
void s390_topology_setup(MachineState *ms);
void s390_topology_new_cpu(int core_id);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index d3ade40a5a..139d46efa4 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -111,6 +111,7 @@ typedef struct CPUEntry {
uint8_t reserved1;
} QEMU_PACKED CPUEntry;
+#define SCLP_READ_SCP_INFO_MNEST 3
#define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128
typedef struct ReadInfo {
SCCBHeader h;
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
index 7f6db18829..08e1fbd13e 100644
--- a/target/s390x/cpu_topology.c
+++ b/target/s390x/cpu_topology.c
@@ -14,6 +14,7 @@
#include "hw/s390x/pv.h"
#include "hw/sysbus.h"
#include "hw/s390x/cpu-topology.h"
+#include "hw/s390x/sclp.h"
static int stsi_15_container(void *p, int nl, int id)
{
@@ -40,7 +41,7 @@ static int stsi_15_cpus(void *p, S390TopologyCores *cd)
}
static int set_socket(const MachineState *ms, void *p,
- S390TopologySocket *socket)
+ S390TopologySocket *socket, int level)
{
BusChild *kid;
int l, len = 0;
@@ -56,24 +57,56 @@ static int set_socket(const MachineState *ms, void *p,
return len;
}
+static int set_book(const MachineState *ms, void *p,
+ S390TopologyBook *book, int level)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ if (level >= 3) {
+ len += stsi_15_container(p, 2, book->book_id);
+ p += len;
+ }
+
+ QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
+ l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child), level);
+ p += l;
+ len += l;
+ }
+
+ return len;
+}
+
static void setup_stsi(const MachineState *ms, void *p, int level)
{
- S390TopologyBook *book;
+ S390TopologyDrawer *drawer;
SysIB_151x *sysib;
BusChild *kid;
+ int nb_sockets, nb_books;
int len, l;
sysib = (SysIB_151x *)p;
sysib->mnest = level;
- sysib->mag[TOPOLOGY_NR_MAG2] = ms->smp.sockets;
+ switch (level) {
+ case 2:
+ nb_books = 0;
+ nb_sockets = ms->smp.sockets * ms->smp.books;
+ break;
+ case 3:
+ nb_books = ms->smp.books;
+ nb_sockets = ms->smp.sockets;
+ break;
+ }
+ sysib->mag[TOPOLOGY_NR_MAG3] = nb_books;
+ sysib->mag[TOPOLOGY_NR_MAG2] = nb_sockets;
sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
- book = s390_get_topology();
+ drawer = s390_get_topology();
len = sizeof(SysIB_151x);
p += len;
- QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
- l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child));
+ QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
+ l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
p += l;
len += l;
}
@@ -87,18 +120,14 @@ void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
void *p;
int ret, cc;
- /*
- * Until the SCLP STSI Facility reporting the MNEST value is used,
- * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
- */
- if (sel2 != 2) {
+ if (sel2 < 2 || sel2 > SCLP_READ_SCP_INFO_MNEST) {
setcc(cpu, 3);
return;
}
p = g_malloc0(TARGET_PAGE_SIZE);
- setup_stsi(machine, p, 2);
+ setup_stsi(machine, p, sel2);
if (s390_is_pv()) {
ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 06/13] s390x: topology: Adding books to STSI
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
Let's add STSI support for the container level 3, books,
and provide the information back to the guest.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 147 +++++++++++++++++++++++++++++---
include/hw/s390x/cpu-topology.h | 20 ++++-
include/hw/s390x/sclp.h | 1 +
target/s390x/cpu_topology.c | 53 +++++++++---
4 files changed, 194 insertions(+), 27 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 74e04fd68e..4705a2af96 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -61,6 +61,26 @@ static S390TopologySocket *s390_create_socket(S390TopologyBook *book, int id)
return socket;
}
+static S390TopologyBook *s390_create_book(S390TopologyDrawer *drawer, int id)
+{
+ DeviceState *dev;
+ S390TopologyBook *book;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (drawer->bus->num_children >= ms->smp.books) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ qdev_realize_and_unref(dev, drawer->bus, &error_fatal);
+
+ book = S390_TOPOLOGY_BOOK(dev);
+ book->book_id = id;
+ drawer->cnt++;
+
+ return book;
+}
+
/*
* s390_get_cores:
* @socket: the socket to search into
@@ -110,6 +130,31 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
return s390_create_socket(book, socket_id);
}
+/*
+ * s390_get_book:
+ * @drawer: The drawer to search into
+ * @book_id: the identifier of the book to search for
+ *
+ * returns a pointer to a S390TopologySocket structure within a drawer having
+ * the specified book_id.
+ * First search if the drawer is already containing the S390TopologySocket
+ * structure and if not create one with this book_id.
+ */
+static S390TopologyBook *s390_get_book(S390TopologyDrawer *drawer,
+ int book_id)
+{
+ S390TopologyBook *book;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &drawer->bus->children, sibling) {
+ book = S390_TOPOLOGY_BOOK(kid->child);
+ if (book->book_id == book_id) {
+ return book;
+ }
+ }
+ return s390_create_book(drawer, book_id);
+}
+
/*
* s390_topology_new_cpu:
* @core_id: the core ID is machine wide
@@ -124,16 +169,21 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
void s390_topology_new_cpu(int core_id)
{
const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyDrawer *drawer;
S390TopologyBook *book;
S390TopologySocket *socket;
S390TopologyCores *cores;
int origin, bit;
int nb_cores_per_socket;
+ int nb_cores_per_book;
- book = s390_get_topology();
+ drawer = s390_get_topology();
/* Cores for the S390 topology are cores and threads of the QEMU topology */
nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
+ nb_cores_per_book = ms->smp.sockets * nb_cores_per_socket;
+
+ book = s390_get_book(drawer, core_id / nb_cores_per_book);
socket = s390_get_socket(book, core_id / nb_cores_per_socket);
/*
@@ -166,23 +216,23 @@ void s390_topology_setup(MachineState *ms)
DeviceState *dev;
/* Create BOOK bridge device */
- dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
+ dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
object_property_add_child(qdev_get_machine(),
- TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
+ TYPE_S390_TOPOLOGY_DRAWER, OBJECT(dev));
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
}
-S390TopologyBook *s390_get_topology(void)
+S390TopologyDrawer *s390_get_topology(void)
{
- static S390TopologyBook *book;
+ static S390TopologyDrawer *drawer;
- if (!book) {
- book = S390_TOPOLOGY_BOOK(
- object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
- assert(book != NULL);
+ if (!drawer) {
+ drawer = S390_TOPOLOGY_DRAWER(object_resolve_path(
+ TYPE_S390_TOPOLOGY_DRAWER, NULL));
+ assert(drawer != NULL);
}
- return book;
+ return drawer;
}
/* --- CORES Definitions --- */
@@ -333,12 +383,13 @@ static void book_class_init(ObjectClass *oc, void *data)
hc->unplug = qdev_simple_device_unplug_cb;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->realize = s390_book_device_realize;
+ dc->bus_type = TYPE_S390_TOPOLOGY_DRAWER_BUS;
dc->desc = "topology book";
}
static const TypeInfo book_info = {
.name = TYPE_S390_TOPOLOGY_BOOK,
- .parent = TYPE_SYS_BUS_DEVICE,
+ .parent = TYPE_DEVICE,
.instance_size = sizeof(S390TopologyBook),
.class_init = book_class_init,
.interfaces = (InterfaceInfo[]) {
@@ -347,6 +398,78 @@ static const TypeInfo book_info = {
}
};
+/* --- DRAWER Definitions --- */
+static Property s390_topology_drawer_properties[] = {
+ DEFINE_PROP_UINT8("drawer_id", S390TopologyDrawer, drawer_id, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static char *drawer_bus_get_dev_path(DeviceState *dev)
+{
+ S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
+ DeviceState *node = dev->parent_bus->parent;
+ char *id = qdev_get_dev_path(node);
+ char *ret;
+
+ if (id) {
+ ret = g_strdup_printf("%s:%02d", id, drawer->drawer_id);
+ g_free(id);
+ } else {
+ ret = g_malloc(6);
+ snprintf(ret, 6, "_:%02d", drawer->drawer_id);
+ }
+
+ return ret;
+}
+
+static void drawer_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = drawer_bus_get_dev_path;
+ k->max_dev = S390_MAX_DRAWERS;
+}
+
+static const TypeInfo drawer_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_DRAWER_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = drawer_bus_class_init,
+};
+
+static void s390_drawer_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
+ BusState *bus;
+
+ bus = qbus_new(TYPE_S390_TOPOLOGY_DRAWER_BUS, dev,
+ TYPE_S390_TOPOLOGY_DRAWER_BUS);
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+ drawer->bus = bus;
+}
+
+static void drawer_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_drawer_device_realize;
+ device_class_set_props(dc, s390_topology_drawer_properties);
+ dc->desc = "topology drawer";
+}
+
+static const TypeInfo drawer_info = {
+ .name = TYPE_S390_TOPOLOGY_DRAWER,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyDrawer),
+ .class_init = drawer_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
static void topology_register(void)
{
type_register_static(&cpu_cores_info);
@@ -354,6 +477,8 @@ static void topology_register(void)
type_register_static(&socket_info);
type_register_static(&book_bus_info);
type_register_static(&book_info);
+ type_register_static(&drawer_bus_info);
+ type_register_static(&drawer_info);
}
type_init(topology_register);
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index e6e013a8b8..78017c3d78 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -56,18 +56,30 @@ OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
#define TYPE_S390_TOPOLOGY_BOOK "topology book"
#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
struct S390TopologyBook {
- SysBusDevice parent_obj;
+ DeviceState parent_obj;
BusState *bus;
uint8_t book_id;
int cnt;
};
typedef struct S390TopologyBook S390TopologyBook;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
-#define S390_MAX_BOOKS 1
+#define S390_MAX_BOOKS 4
+
+#define TYPE_S390_TOPOLOGY_DRAWER "topology drawer"
+#define TYPE_S390_TOPOLOGY_DRAWER_BUS "drawer-bus"
+struct S390TopologyDrawer {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t drawer_id;
+ int cnt;
+};
+typedef struct S390TopologyDrawer S390TopologyDrawer;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyDrawer, S390_TOPOLOGY_DRAWER)
+#define S390_MAX_DRAWERS 1
-S390TopologyBook *s390_init_topology(void);
+S390TopologyDrawer *s390_init_topology(void);
-S390TopologyBook *s390_get_topology(void);
+S390TopologyDrawer *s390_get_topology(void);
void s390_topology_setup(MachineState *ms);
void s390_topology_new_cpu(int core_id);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index d3ade40a5a..139d46efa4 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -111,6 +111,7 @@ typedef struct CPUEntry {
uint8_t reserved1;
} QEMU_PACKED CPUEntry;
+#define SCLP_READ_SCP_INFO_MNEST 3
#define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128
typedef struct ReadInfo {
SCCBHeader h;
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
index 7f6db18829..08e1fbd13e 100644
--- a/target/s390x/cpu_topology.c
+++ b/target/s390x/cpu_topology.c
@@ -14,6 +14,7 @@
#include "hw/s390x/pv.h"
#include "hw/sysbus.h"
#include "hw/s390x/cpu-topology.h"
+#include "hw/s390x/sclp.h"
static int stsi_15_container(void *p, int nl, int id)
{
@@ -40,7 +41,7 @@ static int stsi_15_cpus(void *p, S390TopologyCores *cd)
}
static int set_socket(const MachineState *ms, void *p,
- S390TopologySocket *socket)
+ S390TopologySocket *socket, int level)
{
BusChild *kid;
int l, len = 0;
@@ -56,24 +57,56 @@ static int set_socket(const MachineState *ms, void *p,
return len;
}
+static int set_book(const MachineState *ms, void *p,
+ S390TopologyBook *book, int level)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ if (level >= 3) {
+ len += stsi_15_container(p, 2, book->book_id);
+ p += len;
+ }
+
+ QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
+ l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child), level);
+ p += l;
+ len += l;
+ }
+
+ return len;
+}
+
static void setup_stsi(const MachineState *ms, void *p, int level)
{
- S390TopologyBook *book;
+ S390TopologyDrawer *drawer;
SysIB_151x *sysib;
BusChild *kid;
+ int nb_sockets, nb_books;
int len, l;
sysib = (SysIB_151x *)p;
sysib->mnest = level;
- sysib->mag[TOPOLOGY_NR_MAG2] = ms->smp.sockets;
+ switch (level) {
+ case 2:
+ nb_books = 0;
+ nb_sockets = ms->smp.sockets * ms->smp.books;
+ break;
+ case 3:
+ nb_books = ms->smp.books;
+ nb_sockets = ms->smp.sockets;
+ break;
+ }
+ sysib->mag[TOPOLOGY_NR_MAG3] = nb_books;
+ sysib->mag[TOPOLOGY_NR_MAG2] = nb_sockets;
sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
- book = s390_get_topology();
+ drawer = s390_get_topology();
len = sizeof(SysIB_151x);
p += len;
- QTAILQ_FOREACH_REVERSE(kid, &book->bus->children, sibling) {
- l = set_socket(ms, p, S390_TOPOLOGY_SOCKET(kid->child));
+ QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
+ l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
p += l;
len += l;
}
@@ -87,18 +120,14 @@ void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
void *p;
int ret, cc;
- /*
- * Until the SCLP STSI Facility reporting the MNEST value is used,
- * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
- */
- if (sel2 != 2) {
+ if (sel2 < 2 || sel2 > SCLP_READ_SCP_INFO_MNEST) {
setcc(cpu, 3);
return;
}
p = g_malloc0(TARGET_PAGE_SIZE);
- setup_stsi(machine, p, 2);
+ setup_stsi(machine, p, sel2);
if (s390_is_pv()) {
ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 07/13] s390x: topology: Adding drawers to CPU topology
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
S390 CPU topology may have up to 5 topology containers.
The first container above the cores is level 2, the sockets,
and the level 3, containing sockets are the books.
We introduce here the drawers, drawers is the level containing books.
Let's add drawers, level4, containers to the CPU topology.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine-smp.c | 33 ++++++++++++++++++++++++++-------
hw/core/machine.c | 2 ++
hw/s390x/s390-virtio-ccw.c | 1 +
include/hw/boards.h | 4 ++++
qapi/machine.json | 9 +++++++--
qemu-options.hx | 5 +++--
softmmu/vl.c | 3 +++
7 files changed, 46 insertions(+), 11 deletions(-)
diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c
index d7aa39d540..26150c748f 100644
--- a/hw/core/machine-smp.c
+++ b/hw/core/machine-smp.c
@@ -31,6 +31,10 @@ static char *cpu_hierarchy_to_string(MachineState *ms)
MachineClass *mc = MACHINE_GET_CLASS(ms);
GString *s = g_string_new(NULL);
+ if (mc->smp_props.drawers_supported) {
+ g_string_append_printf(s, " * drawers (%u)", ms->smp.drawers);
+ }
+
if (mc->smp_props.books_supported) {
g_string_append_printf(s, " * books (%u)", ms->smp.books);
}
@@ -77,6 +81,7 @@ void machine_parse_smp_config(MachineState *ms,
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
unsigned cpus = config->has_cpus ? config->cpus : 0;
+ unsigned drawers = config->has_drawers ? config->drawers : 0;
unsigned books = config->has_books ? config->books : 0;
unsigned sockets = config->has_sockets ? config->sockets : 0;
unsigned dies = config->has_dies ? config->dies : 0;
@@ -90,6 +95,7 @@ void machine_parse_smp_config(MachineState *ms,
* explicit configuration like "cpus=0" is not allowed.
*/
if ((config->has_cpus && config->cpus == 0) ||
+ (config->has_drawers && config->drawers == 0) ||
(config->has_books && config->books == 0) ||
(config->has_sockets && config->sockets == 0) ||
(config->has_dies && config->dies == 0) ||
@@ -124,6 +130,13 @@ void machine_parse_smp_config(MachineState *ms,
books = books > 0 ? books : 1;
+ if (!mc->smp_props.drawers_supported && drawers > 1) {
+ error_setg(errp, "drawers not supported by this machine's CPU topology");
+ return;
+ }
+
+ drawers = drawers > 0 ? drawers : 1;
+
/* compute missing values based on the provided ones */
if (cpus == 0 && maxcpus == 0) {
sockets = sockets > 0 ? sockets : 1;
@@ -137,34 +150,40 @@ void machine_parse_smp_config(MachineState *ms,
if (sockets == 0) {
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (books * dies * clusters * cores * threads);
+ sockets = maxcpus /
+ (drawers * books * dies * clusters * cores * threads);
} else if (cores == 0) {
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (books * sockets * dies * clusters * threads);
+ cores = maxcpus /
+ (drawers * books * sockets * dies * clusters * threads);
}
} else {
/* prefer cores over sockets since 6.2 */
if (cores == 0) {
sockets = sockets > 0 ? sockets : 1;
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (books * sockets * dies * clusters * threads);
+ cores = maxcpus /
+ (drawers * books * sockets * dies * clusters * threads);
} else if (sockets == 0) {
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (books * dies * clusters * cores * threads);
+ sockets = maxcpus /
+ (drawers * books * dies * clusters * cores * threads);
}
}
/* try to calculate omitted threads at last */
if (threads == 0) {
- threads = maxcpus / (books * sockets * dies * clusters * cores);
+ threads = maxcpus /
+ (drawers * books * sockets * dies * clusters * cores);
}
}
- maxcpus = maxcpus > 0 ? maxcpus : books * sockets * dies *
+ maxcpus = maxcpus > 0 ? maxcpus : drawers * books * sockets * dies *
clusters * cores * threads;
cpus = cpus > 0 ? cpus : maxcpus;
ms->smp.cpus = cpus;
+ ms->smp.drawers = drawers;
ms->smp.books = books;
ms->smp.sockets = sockets;
ms->smp.dies = dies;
@@ -174,7 +193,7 @@ void machine_parse_smp_config(MachineState *ms,
ms->smp.max_cpus = maxcpus;
/* sanity-check of the computed topology */
- if (books * sockets * dies * clusters * cores * threads != maxcpus) {
+ if (drawers * books * sockets * dies * clusters * cores * threads != maxcpus) {
g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
error_setg(errp, "Invalid CPU topology: "
"product of the hierarchy must match maxcpus: "
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 22691fb8b6..b67f213654 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -745,6 +745,7 @@ static void machine_get_smp(Object *obj, Visitor *v, const char *name,
MachineState *ms = MACHINE(obj);
SMPConfiguration *config = &(SMPConfiguration){
.has_cpus = true, .cpus = ms->smp.cpus,
+ .has_drawers = true, .drawers = ms->smp.drawers,
.has_books = true, .books = ms->smp.books,
.has_sockets = true, .sockets = ms->smp.sockets,
.has_dies = true, .dies = ms->smp.dies,
@@ -938,6 +939,7 @@ static void machine_initfn(Object *obj)
/* default to mc->default_cpus */
ms->smp.cpus = mc->default_cpus;
ms->smp.max_cpus = mc->default_cpus;
+ ms->smp.drawers = 1;
ms->smp.books = 1;
ms->smp.sockets = 1;
ms->smp.dies = 1;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index b8f19aa6d6..2839c24833 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -617,6 +617,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
nc->nmi_monitor_handler = s390_nmi;
mc->default_ram_id = "s390.ram";
mc->smp_props.books_supported = true;
+ mc->smp_props.drawers_supported = true;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index bc0f7f22dc..abc5556c50 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -131,12 +131,14 @@ typedef struct {
* @dies_supported - whether dies are supported by the machine
* @clusters_supported - whether clusters are supported by the machine
* @books_supported - whether books are supported by the machine
+ * @drawers_supported - whether drawers are supported by the machine
*/
typedef struct {
bool prefer_sockets;
bool dies_supported;
bool clusters_supported;
bool books_supported;
+ bool drawers_supported;
} SMPCompatProps;
/**
@@ -301,6 +303,7 @@ typedef struct DeviceMemoryState {
/**
* CpuTopology:
* @cpus: the number of present logical processors on the machine
+ * @drawers: the number of drawers on the machine
* @books: the number of books on the machine
* @sockets: the number of sockets on the machine
* @dies: the number of dies in one socket
@@ -311,6 +314,7 @@ typedef struct DeviceMemoryState {
*/
typedef struct CpuTopology {
unsigned int cpus;
+ unsigned int drawers;
unsigned int books;
unsigned int sockets;
unsigned int dies;
diff --git a/qapi/machine.json b/qapi/machine.json
index 7023d72c79..cb1983c295 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -866,13 +866,14 @@
# a CPU is being hotplugged.
#
# @node-id: NUMA node ID the CPU belongs to
-# @book-id: book number within node/board the CPU belongs to
+# @drawer-id: drawer number within node/board the CPU belongs to
+# @book-id: book number within drawer/node/board the CPU belongs to
# @socket-id: socket number within book/node/board the CPU belongs to
# @die-id: die number within socket the CPU belongs to (since 4.1)
# @core-id: core number within die the CPU belongs to
# @thread-id: thread number within core the CPU belongs to
#
-# Note: currently there are 6 properties that could be present
+# Note: currently there are 7 properties that could be present
# but management should be prepared to pass through other
# properties with device_add command to allow for future
# interface extension. This also requires the filed names to be kept in
@@ -882,6 +883,7 @@
##
{ 'struct': 'CpuInstanceProperties',
'data': { '*node-id': 'int',
+ '*drawer-id': 'int',
'*book-id': 'int',
'*socket-id': 'int',
'*die-id': 'int',
@@ -1403,6 +1405,8 @@
#
# @cpus: number of virtual CPUs in the virtual machine
#
+# @drawers: number of drawers in the CPU topology
+#
# @books: number of books in the CPU topology
#
# @sockets: number of sockets in the CPU topology
@@ -1421,6 +1425,7 @@
##
{ 'struct': 'SMPConfiguration', 'data': {
'*cpus': 'int',
+ '*drawers': 'int',
'*books': 'int',
'*sockets': 'int',
'*dies': 'int',
diff --git a/qemu-options.hx b/qemu-options.hx
index c4de33d419..7df151033e 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -206,11 +206,12 @@ SRST
ERST
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
- "-smp [[cpus=]n][,maxcpus=maxcpus][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
+ "-smp [[cpus=]n][,maxcpus=maxcpus][,drawers=drawers][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
" set the number of initial CPUs to 'n' [default=1]\n"
" maxcpus= maximum number of total CPUs, including\n"
" offline CPUs for hotplug, etc\n"
- " books= number of books on the machine board\n"
+ " drawers= number of drawers on the machine board\n"
+ " books= number of books in one drawer\n"
" sockets= number of sockets in one book\n"
" dies= number of dies in one socket\n"
" clusters= number of clusters in one die\n"
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 1d34ab8e3a..94cac356f9 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -721,6 +721,9 @@ static QemuOptsList qemu_smp_opts = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
+ }, {
+ .name = "drawers",
+ .type = QEMU_OPT_NUMBER,
}, {
.name = "books",
.type = QEMU_OPT_NUMBER,
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 07/13] s390x: topology: Adding drawers to CPU topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
S390 CPU topology may have up to 5 topology containers.
The first container above the cores is level 2, the sockets,
and the level 3, containing sockets are the books.
We introduce here the drawers, drawers is the level containing books.
Let's add drawers, level4, containers to the CPU topology.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine-smp.c | 33 ++++++++++++++++++++++++++-------
hw/core/machine.c | 2 ++
hw/s390x/s390-virtio-ccw.c | 1 +
include/hw/boards.h | 4 ++++
qapi/machine.json | 9 +++++++--
qemu-options.hx | 5 +++--
softmmu/vl.c | 3 +++
7 files changed, 46 insertions(+), 11 deletions(-)
diff --git a/hw/core/machine-smp.c b/hw/core/machine-smp.c
index d7aa39d540..26150c748f 100644
--- a/hw/core/machine-smp.c
+++ b/hw/core/machine-smp.c
@@ -31,6 +31,10 @@ static char *cpu_hierarchy_to_string(MachineState *ms)
MachineClass *mc = MACHINE_GET_CLASS(ms);
GString *s = g_string_new(NULL);
+ if (mc->smp_props.drawers_supported) {
+ g_string_append_printf(s, " * drawers (%u)", ms->smp.drawers);
+ }
+
if (mc->smp_props.books_supported) {
g_string_append_printf(s, " * books (%u)", ms->smp.books);
}
@@ -77,6 +81,7 @@ void machine_parse_smp_config(MachineState *ms,
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
unsigned cpus = config->has_cpus ? config->cpus : 0;
+ unsigned drawers = config->has_drawers ? config->drawers : 0;
unsigned books = config->has_books ? config->books : 0;
unsigned sockets = config->has_sockets ? config->sockets : 0;
unsigned dies = config->has_dies ? config->dies : 0;
@@ -90,6 +95,7 @@ void machine_parse_smp_config(MachineState *ms,
* explicit configuration like "cpus=0" is not allowed.
*/
if ((config->has_cpus && config->cpus == 0) ||
+ (config->has_drawers && config->drawers == 0) ||
(config->has_books && config->books == 0) ||
(config->has_sockets && config->sockets == 0) ||
(config->has_dies && config->dies == 0) ||
@@ -124,6 +130,13 @@ void machine_parse_smp_config(MachineState *ms,
books = books > 0 ? books : 1;
+ if (!mc->smp_props.drawers_supported && drawers > 1) {
+ error_setg(errp, "drawers not supported by this machine's CPU topology");
+ return;
+ }
+
+ drawers = drawers > 0 ? drawers : 1;
+
/* compute missing values based on the provided ones */
if (cpus == 0 && maxcpus == 0) {
sockets = sockets > 0 ? sockets : 1;
@@ -137,34 +150,40 @@ void machine_parse_smp_config(MachineState *ms,
if (sockets == 0) {
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (books * dies * clusters * cores * threads);
+ sockets = maxcpus /
+ (drawers * books * dies * clusters * cores * threads);
} else if (cores == 0) {
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (books * sockets * dies * clusters * threads);
+ cores = maxcpus /
+ (drawers * books * sockets * dies * clusters * threads);
}
} else {
/* prefer cores over sockets since 6.2 */
if (cores == 0) {
sockets = sockets > 0 ? sockets : 1;
threads = threads > 0 ? threads : 1;
- cores = maxcpus / (books * sockets * dies * clusters * threads);
+ cores = maxcpus /
+ (drawers * books * sockets * dies * clusters * threads);
} else if (sockets == 0) {
threads = threads > 0 ? threads : 1;
- sockets = maxcpus / (books * dies * clusters * cores * threads);
+ sockets = maxcpus /
+ (drawers * books * dies * clusters * cores * threads);
}
}
/* try to calculate omitted threads at last */
if (threads == 0) {
- threads = maxcpus / (books * sockets * dies * clusters * cores);
+ threads = maxcpus /
+ (drawers * books * sockets * dies * clusters * cores);
}
}
- maxcpus = maxcpus > 0 ? maxcpus : books * sockets * dies *
+ maxcpus = maxcpus > 0 ? maxcpus : drawers * books * sockets * dies *
clusters * cores * threads;
cpus = cpus > 0 ? cpus : maxcpus;
ms->smp.cpus = cpus;
+ ms->smp.drawers = drawers;
ms->smp.books = books;
ms->smp.sockets = sockets;
ms->smp.dies = dies;
@@ -174,7 +193,7 @@ void machine_parse_smp_config(MachineState *ms,
ms->smp.max_cpus = maxcpus;
/* sanity-check of the computed topology */
- if (books * sockets * dies * clusters * cores * threads != maxcpus) {
+ if (drawers * books * sockets * dies * clusters * cores * threads != maxcpus) {
g_autofree char *topo_msg = cpu_hierarchy_to_string(ms);
error_setg(errp, "Invalid CPU topology: "
"product of the hierarchy must match maxcpus: "
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 22691fb8b6..b67f213654 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -745,6 +745,7 @@ static void machine_get_smp(Object *obj, Visitor *v, const char *name,
MachineState *ms = MACHINE(obj);
SMPConfiguration *config = &(SMPConfiguration){
.has_cpus = true, .cpus = ms->smp.cpus,
+ .has_drawers = true, .drawers = ms->smp.drawers,
.has_books = true, .books = ms->smp.books,
.has_sockets = true, .sockets = ms->smp.sockets,
.has_dies = true, .dies = ms->smp.dies,
@@ -938,6 +939,7 @@ static void machine_initfn(Object *obj)
/* default to mc->default_cpus */
ms->smp.cpus = mc->default_cpus;
ms->smp.max_cpus = mc->default_cpus;
+ ms->smp.drawers = 1;
ms->smp.books = 1;
ms->smp.sockets = 1;
ms->smp.dies = 1;
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index b8f19aa6d6..2839c24833 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -617,6 +617,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
nc->nmi_monitor_handler = s390_nmi;
mc->default_ram_id = "s390.ram";
mc->smp_props.books_supported = true;
+ mc->smp_props.drawers_supported = true;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index bc0f7f22dc..abc5556c50 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -131,12 +131,14 @@ typedef struct {
* @dies_supported - whether dies are supported by the machine
* @clusters_supported - whether clusters are supported by the machine
* @books_supported - whether books are supported by the machine
+ * @drawers_supported - whether drawers are supported by the machine
*/
typedef struct {
bool prefer_sockets;
bool dies_supported;
bool clusters_supported;
bool books_supported;
+ bool drawers_supported;
} SMPCompatProps;
/**
@@ -301,6 +303,7 @@ typedef struct DeviceMemoryState {
/**
* CpuTopology:
* @cpus: the number of present logical processors on the machine
+ * @drawers: the number of drawers on the machine
* @books: the number of books on the machine
* @sockets: the number of sockets on the machine
* @dies: the number of dies in one socket
@@ -311,6 +314,7 @@ typedef struct DeviceMemoryState {
*/
typedef struct CpuTopology {
unsigned int cpus;
+ unsigned int drawers;
unsigned int books;
unsigned int sockets;
unsigned int dies;
diff --git a/qapi/machine.json b/qapi/machine.json
index 7023d72c79..cb1983c295 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -866,13 +866,14 @@
# a CPU is being hotplugged.
#
# @node-id: NUMA node ID the CPU belongs to
-# @book-id: book number within node/board the CPU belongs to
+# @drawer-id: drawer number within node/board the CPU belongs to
+# @book-id: book number within drawer/node/board the CPU belongs to
# @socket-id: socket number within book/node/board the CPU belongs to
# @die-id: die number within socket the CPU belongs to (since 4.1)
# @core-id: core number within die the CPU belongs to
# @thread-id: thread number within core the CPU belongs to
#
-# Note: currently there are 6 properties that could be present
+# Note: currently there are 7 properties that could be present
# but management should be prepared to pass through other
# properties with device_add command to allow for future
# interface extension. This also requires the filed names to be kept in
@@ -882,6 +883,7 @@
##
{ 'struct': 'CpuInstanceProperties',
'data': { '*node-id': 'int',
+ '*drawer-id': 'int',
'*book-id': 'int',
'*socket-id': 'int',
'*die-id': 'int',
@@ -1403,6 +1405,8 @@
#
# @cpus: number of virtual CPUs in the virtual machine
#
+# @drawers: number of drawers in the CPU topology
+#
# @books: number of books in the CPU topology
#
# @sockets: number of sockets in the CPU topology
@@ -1421,6 +1425,7 @@
##
{ 'struct': 'SMPConfiguration', 'data': {
'*cpus': 'int',
+ '*drawers': 'int',
'*books': 'int',
'*sockets': 'int',
'*dies': 'int',
diff --git a/qemu-options.hx b/qemu-options.hx
index c4de33d419..7df151033e 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -206,11 +206,12 @@ SRST
ERST
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
- "-smp [[cpus=]n][,maxcpus=maxcpus][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
+ "-smp [[cpus=]n][,maxcpus=maxcpus][,drawers=drawers][,books=books][,sockets=sockets][,dies=dies][,clusters=clusters][,cores=cores][,threads=threads]\n"
" set the number of initial CPUs to 'n' [default=1]\n"
" maxcpus= maximum number of total CPUs, including\n"
" offline CPUs for hotplug, etc\n"
- " books= number of books on the machine board\n"
+ " drawers= number of drawers on the machine board\n"
+ " books= number of books in one drawer\n"
" sockets= number of sockets in one book\n"
" dies= number of dies in one socket\n"
" clusters= number of clusters in one die\n"
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 1d34ab8e3a..94cac356f9 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -721,6 +721,9 @@ static QemuOptsList qemu_smp_opts = {
{
.name = "cpus",
.type = QEMU_OPT_NUMBER,
+ }, {
+ .name = "drawers",
+ .type = QEMU_OPT_NUMBER,
}, {
.name = "books",
.type = QEMU_OPT_NUMBER,
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 08/13] s390x: topology: Adding drawers to STSI
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
Let's add STSI support for the container level 4, drawers,
and provide the information back to the guest.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 137 +++++++++++++++++++++++++++++---
include/hw/s390x/cpu-topology.h | 19 ++++-
include/hw/s390x/sclp.h | 2 +-
target/s390x/cpu_topology.c | 40 ++++++++--
4 files changed, 176 insertions(+), 22 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 4705a2af96..3ae86f80f1 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -81,6 +81,26 @@ static S390TopologyBook *s390_create_book(S390TopologyDrawer *drawer, int id)
return book;
}
+static S390TopologyDrawer *s390_create_drawer(S390TopologyNode *node, int id)
+{
+ DeviceState *dev;
+ S390TopologyDrawer *drawer;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (node->bus->num_children >= ms->smp.drawers) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
+ qdev_realize_and_unref(dev, node->bus, &error_fatal);
+
+ drawer = S390_TOPOLOGY_DRAWER(dev);
+ drawer->drawer_id = id;
+ node->cnt++;
+
+ return drawer;
+}
+
/*
* s390_get_cores:
* @socket: the socket to search into
@@ -130,6 +150,31 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
return s390_create_socket(book, socket_id);
}
+/*
+ * s390_get_drawer:
+ * @node: The node to search into
+ * @drawer_id: the identifier of the drawer to search for
+ *
+ * returns a pointer to a S390TopologyDrawer structure within a book having
+ * the specified drawer_id.
+ * First search if the book is already containing the S390TopologyDrawer
+ * structure and if not create one with this drawer_id.
+ */
+static S390TopologyDrawer *s390_get_drawer(S390TopologyNode *node,
+ int drawer_id)
+{
+ S390TopologyDrawer *drawer;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &node->bus->children, sibling) {
+ drawer = S390_TOPOLOGY_DRAWER(kid->child);
+ if (drawer->drawer_id == drawer_id) {
+ return drawer;
+ }
+ }
+ return s390_create_drawer(node, drawer_id);
+}
+
/*
* s390_get_book:
* @drawer: The drawer to search into
@@ -169,6 +214,7 @@ static S390TopologyBook *s390_get_book(S390TopologyDrawer *drawer,
void s390_topology_new_cpu(int core_id)
{
const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyNode *node;
S390TopologyDrawer *drawer;
S390TopologyBook *book;
S390TopologySocket *socket;
@@ -176,13 +222,16 @@ void s390_topology_new_cpu(int core_id)
int origin, bit;
int nb_cores_per_socket;
int nb_cores_per_book;
+ int nb_cores_per_drawer;
- drawer = s390_get_topology();
+ node = s390_get_topology();
/* Cores for the S390 topology are cores and threads of the QEMU topology */
nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
nb_cores_per_book = ms->smp.sockets * nb_cores_per_socket;
+ nb_cores_per_drawer = ms->smp.books * nb_cores_per_book;
+ drawer = s390_get_drawer(node, core_id / nb_cores_per_drawer);
book = s390_get_book(drawer, core_id / nb_cores_per_book);
socket = s390_get_socket(book, core_id / nb_cores_per_socket);
@@ -216,23 +265,23 @@ void s390_topology_setup(MachineState *ms)
DeviceState *dev;
/* Create BOOK bridge device */
- dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
+ dev = qdev_new(TYPE_S390_TOPOLOGY_NODE);
object_property_add_child(qdev_get_machine(),
- TYPE_S390_TOPOLOGY_DRAWER, OBJECT(dev));
+ TYPE_S390_TOPOLOGY_NODE, OBJECT(dev));
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
}
-S390TopologyDrawer *s390_get_topology(void)
+S390TopologyNode *s390_get_topology(void)
{
- static S390TopologyDrawer *drawer;
+ static S390TopologyNode *node;
- if (!drawer) {
- drawer = S390_TOPOLOGY_DRAWER(object_resolve_path(
- TYPE_S390_TOPOLOGY_DRAWER, NULL));
- assert(drawer != NULL);
+ if (!node) {
+ node = S390_TOPOLOGY_NODE(object_resolve_path(
+ TYPE_S390_TOPOLOGY_NODE, NULL));
+ assert(node != NULL);
}
- return drawer;
+ return node;
}
/* --- CORES Definitions --- */
@@ -455,6 +504,7 @@ static void drawer_class_init(ObjectClass *oc, void *data)
hc->unplug = qdev_simple_device_unplug_cb;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->bus_type = TYPE_S390_TOPOLOGY_NODE_BUS;
dc->realize = s390_drawer_device_realize;
device_class_set_props(dc, s390_topology_drawer_properties);
dc->desc = "topology drawer";
@@ -462,7 +512,7 @@ static void drawer_class_init(ObjectClass *oc, void *data)
static const TypeInfo drawer_info = {
.name = TYPE_S390_TOPOLOGY_DRAWER,
- .parent = TYPE_SYS_BUS_DEVICE,
+ .parent = TYPE_DEVICE,
.instance_size = sizeof(S390TopologyDrawer),
.class_init = drawer_class_init,
.interfaces = (InterfaceInfo[]) {
@@ -470,6 +520,69 @@ static const TypeInfo drawer_info = {
{ }
}
};
+
+/* --- NODE Definitions --- */
+
+/*
+ * Nodes are the first level of CPU topology we support
+ * only one NODE for the moment.
+ */
+static char *node_bus_get_dev_path(DeviceState *dev)
+{
+ return g_strdup_printf("00");
+}
+
+static void node_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = node_bus_get_dev_path;
+ k->max_dev = S390_MAX_NODES;
+}
+
+static const TypeInfo node_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_NODE_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = node_bus_class_init,
+};
+
+static void s390_node_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyNode *node = S390_TOPOLOGY_NODE(dev);
+ BusState *bus;
+
+ /* Create NODE bus on NODE bridge device */
+ bus = qbus_new(TYPE_S390_TOPOLOGY_NODE_BUS, dev,
+ TYPE_S390_TOPOLOGY_NODE_BUS);
+ node->bus = bus;
+
+ /* Enable hotplugging */
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+}
+
+static void node_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_node_device_realize;
+ dc->desc = "topology node";
+}
+
+static const TypeInfo node_info = {
+ .name = TYPE_S390_TOPOLOGY_NODE,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyNode),
+ .class_init = node_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
static void topology_register(void)
{
type_register_static(&cpu_cores_info);
@@ -479,6 +592,8 @@ static void topology_register(void)
type_register_static(&book_info);
type_register_static(&drawer_bus_info);
type_register_static(&drawer_info);
+ type_register_static(&node_bus_info);
+ type_register_static(&node_info);
}
type_init(topology_register);
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index 78017c3d78..10e4bd754f 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -68,18 +68,29 @@ OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
#define TYPE_S390_TOPOLOGY_DRAWER "topology drawer"
#define TYPE_S390_TOPOLOGY_DRAWER_BUS "drawer-bus"
struct S390TopologyDrawer {
- SysBusDevice parent_obj;
+ DeviceState parent_obj;
BusState *bus;
uint8_t drawer_id;
int cnt;
};
typedef struct S390TopologyDrawer S390TopologyDrawer;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyDrawer, S390_TOPOLOGY_DRAWER)
-#define S390_MAX_DRAWERS 1
+#define S390_MAX_DRAWERS 4
-S390TopologyDrawer *s390_init_topology(void);
+#define TYPE_S390_TOPOLOGY_NODE "topology node"
+#define TYPE_S390_TOPOLOGY_NODE_BUS "node-bus"
+struct S390TopologyNode {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t node_id;
+ int cnt;
+};
+typedef struct S390TopologyNode S390TopologyNode;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyNode, S390_TOPOLOGY_NODE)
+#define S390_MAX_NODES 1
-S390TopologyDrawer *s390_get_topology(void);
+S390TopologyNode *s390_init_topology(void);
+S390TopologyNode *s390_get_topology(void);
void s390_topology_setup(MachineState *ms);
void s390_topology_new_cpu(int core_id);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index 139d46efa4..7f9ff84bf8 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -111,7 +111,7 @@ typedef struct CPUEntry {
uint8_t reserved1;
} QEMU_PACKED CPUEntry;
-#define SCLP_READ_SCP_INFO_MNEST 3
+#define SCLP_READ_SCP_INFO_MNEST 4
#define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128
typedef struct ReadInfo {
SCCBHeader h;
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
index 08e1fbd13e..fd25c56213 100644
--- a/target/s390x/cpu_topology.c
+++ b/target/s390x/cpu_topology.c
@@ -77,36 +77,64 @@ static int set_book(const MachineState *ms, void *p,
return len;
}
+static int set_drawer(const MachineState *ms, void *p,
+ S390TopologyDrawer *drawer, int level)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ if (level >= 4) {
+ len += stsi_15_container(p, 3, drawer->drawer_id);
+ p += len;
+ }
+
+ QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
+ l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
+ p += l;
+ len += l;
+ }
+
+ return len;
+}
+
static void setup_stsi(const MachineState *ms, void *p, int level)
{
- S390TopologyDrawer *drawer;
+ S390TopologyNode *node;
SysIB_151x *sysib;
BusChild *kid;
- int nb_sockets, nb_books;
+ int nb_sockets, nb_books, nb_drawers;
int len, l;
sysib = (SysIB_151x *)p;
sysib->mnest = level;
switch (level) {
case 2:
+ nb_drawers = 0;
nb_books = 0;
- nb_sockets = ms->smp.sockets * ms->smp.books;
+ nb_sockets = ms->smp.sockets * ms->smp.books * ms->smp.drawers;
break;
case 3:
+ nb_drawers = 0;
+ nb_books = ms->smp.books * ms->smp.drawers;
+ nb_sockets = ms->smp.sockets;
+ break;
+ case 4:
+ nb_drawers = ms->smp.drawers;
nb_books = ms->smp.books;
nb_sockets = ms->smp.sockets;
break;
}
+ sysib->mag[TOPOLOGY_NR_MAG4] = nb_drawers;
sysib->mag[TOPOLOGY_NR_MAG3] = nb_books;
sysib->mag[TOPOLOGY_NR_MAG2] = nb_sockets;
sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
- drawer = s390_get_topology();
+ node = s390_get_topology();
len = sizeof(SysIB_151x);
p += len;
- QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
- l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
+ QTAILQ_FOREACH_REVERSE(kid, &node->bus->children, sibling) {
+ l = set_drawer(ms, p, S390_TOPOLOGY_DRAWER(kid->child), level);
p += l;
len += l;
}
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 08/13] s390x: topology: Adding drawers to STSI
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
Let's add STSI support for the container level 4, drawers,
and provide the information back to the guest.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 137 +++++++++++++++++++++++++++++---
include/hw/s390x/cpu-topology.h | 19 ++++-
include/hw/s390x/sclp.h | 2 +-
target/s390x/cpu_topology.c | 40 ++++++++--
4 files changed, 176 insertions(+), 22 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 4705a2af96..3ae86f80f1 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -81,6 +81,26 @@ static S390TopologyBook *s390_create_book(S390TopologyDrawer *drawer, int id)
return book;
}
+static S390TopologyDrawer *s390_create_drawer(S390TopologyNode *node, int id)
+{
+ DeviceState *dev;
+ S390TopologyDrawer *drawer;
+ const MachineState *ms = MACHINE(qdev_get_machine());
+
+ if (node->bus->num_children >= ms->smp.drawers) {
+ return NULL;
+ }
+
+ dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
+ qdev_realize_and_unref(dev, node->bus, &error_fatal);
+
+ drawer = S390_TOPOLOGY_DRAWER(dev);
+ drawer->drawer_id = id;
+ node->cnt++;
+
+ return drawer;
+}
+
/*
* s390_get_cores:
* @socket: the socket to search into
@@ -130,6 +150,31 @@ static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
return s390_create_socket(book, socket_id);
}
+/*
+ * s390_get_drawer:
+ * @node: The node to search into
+ * @drawer_id: the identifier of the drawer to search for
+ *
+ * returns a pointer to a S390TopologyDrawer structure within a book having
+ * the specified drawer_id.
+ * First search if the book is already containing the S390TopologyDrawer
+ * structure and if not create one with this drawer_id.
+ */
+static S390TopologyDrawer *s390_get_drawer(S390TopologyNode *node,
+ int drawer_id)
+{
+ S390TopologyDrawer *drawer;
+ BusChild *kid;
+
+ QTAILQ_FOREACH(kid, &node->bus->children, sibling) {
+ drawer = S390_TOPOLOGY_DRAWER(kid->child);
+ if (drawer->drawer_id == drawer_id) {
+ return drawer;
+ }
+ }
+ return s390_create_drawer(node, drawer_id);
+}
+
/*
* s390_get_book:
* @drawer: The drawer to search into
@@ -169,6 +214,7 @@ static S390TopologyBook *s390_get_book(S390TopologyDrawer *drawer,
void s390_topology_new_cpu(int core_id)
{
const MachineState *ms = MACHINE(qdev_get_machine());
+ S390TopologyNode *node;
S390TopologyDrawer *drawer;
S390TopologyBook *book;
S390TopologySocket *socket;
@@ -176,13 +222,16 @@ void s390_topology_new_cpu(int core_id)
int origin, bit;
int nb_cores_per_socket;
int nb_cores_per_book;
+ int nb_cores_per_drawer;
- drawer = s390_get_topology();
+ node = s390_get_topology();
/* Cores for the S390 topology are cores and threads of the QEMU topology */
nb_cores_per_socket = ms->smp.cores * ms->smp.threads;
nb_cores_per_book = ms->smp.sockets * nb_cores_per_socket;
+ nb_cores_per_drawer = ms->smp.books * nb_cores_per_book;
+ drawer = s390_get_drawer(node, core_id / nb_cores_per_drawer);
book = s390_get_book(drawer, core_id / nb_cores_per_book);
socket = s390_get_socket(book, core_id / nb_cores_per_socket);
@@ -216,23 +265,23 @@ void s390_topology_setup(MachineState *ms)
DeviceState *dev;
/* Create BOOK bridge device */
- dev = qdev_new(TYPE_S390_TOPOLOGY_DRAWER);
+ dev = qdev_new(TYPE_S390_TOPOLOGY_NODE);
object_property_add_child(qdev_get_machine(),
- TYPE_S390_TOPOLOGY_DRAWER, OBJECT(dev));
+ TYPE_S390_TOPOLOGY_NODE, OBJECT(dev));
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
}
-S390TopologyDrawer *s390_get_topology(void)
+S390TopologyNode *s390_get_topology(void)
{
- static S390TopologyDrawer *drawer;
+ static S390TopologyNode *node;
- if (!drawer) {
- drawer = S390_TOPOLOGY_DRAWER(object_resolve_path(
- TYPE_S390_TOPOLOGY_DRAWER, NULL));
- assert(drawer != NULL);
+ if (!node) {
+ node = S390_TOPOLOGY_NODE(object_resolve_path(
+ TYPE_S390_TOPOLOGY_NODE, NULL));
+ assert(node != NULL);
}
- return drawer;
+ return node;
}
/* --- CORES Definitions --- */
@@ -455,6 +504,7 @@ static void drawer_class_init(ObjectClass *oc, void *data)
hc->unplug = qdev_simple_device_unplug_cb;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->bus_type = TYPE_S390_TOPOLOGY_NODE_BUS;
dc->realize = s390_drawer_device_realize;
device_class_set_props(dc, s390_topology_drawer_properties);
dc->desc = "topology drawer";
@@ -462,7 +512,7 @@ static void drawer_class_init(ObjectClass *oc, void *data)
static const TypeInfo drawer_info = {
.name = TYPE_S390_TOPOLOGY_DRAWER,
- .parent = TYPE_SYS_BUS_DEVICE,
+ .parent = TYPE_DEVICE,
.instance_size = sizeof(S390TopologyDrawer),
.class_init = drawer_class_init,
.interfaces = (InterfaceInfo[]) {
@@ -470,6 +520,69 @@ static const TypeInfo drawer_info = {
{ }
}
};
+
+/* --- NODE Definitions --- */
+
+/*
+ * Nodes are the first level of CPU topology we support
+ * only one NODE for the moment.
+ */
+static char *node_bus_get_dev_path(DeviceState *dev)
+{
+ return g_strdup_printf("00");
+}
+
+static void node_bus_class_init(ObjectClass *oc, void *data)
+{
+ BusClass *k = BUS_CLASS(oc);
+
+ k->get_dev_path = node_bus_get_dev_path;
+ k->max_dev = S390_MAX_NODES;
+}
+
+static const TypeInfo node_bus_info = {
+ .name = TYPE_S390_TOPOLOGY_NODE_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = 0,
+ .class_init = node_bus_class_init,
+};
+
+static void s390_node_device_realize(DeviceState *dev, Error **errp)
+{
+ S390TopologyNode *node = S390_TOPOLOGY_NODE(dev);
+ BusState *bus;
+
+ /* Create NODE bus on NODE bridge device */
+ bus = qbus_new(TYPE_S390_TOPOLOGY_NODE_BUS, dev,
+ TYPE_S390_TOPOLOGY_NODE_BUS);
+ node->bus = bus;
+
+ /* Enable hotplugging */
+ qbus_set_hotplug_handler(bus, OBJECT(dev));
+}
+
+static void node_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
+
+ hc->unplug = qdev_simple_device_unplug_cb;
+ set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
+ dc->realize = s390_node_device_realize;
+ dc->desc = "topology node";
+}
+
+static const TypeInfo node_info = {
+ .name = TYPE_S390_TOPOLOGY_NODE,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(S390TopologyNode),
+ .class_init = node_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_HOTPLUG_HANDLER },
+ { }
+ }
+};
+
static void topology_register(void)
{
type_register_static(&cpu_cores_info);
@@ -479,6 +592,8 @@ static void topology_register(void)
type_register_static(&book_info);
type_register_static(&drawer_bus_info);
type_register_static(&drawer_info);
+ type_register_static(&node_bus_info);
+ type_register_static(&node_info);
}
type_init(topology_register);
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index 78017c3d78..10e4bd754f 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -68,18 +68,29 @@ OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
#define TYPE_S390_TOPOLOGY_DRAWER "topology drawer"
#define TYPE_S390_TOPOLOGY_DRAWER_BUS "drawer-bus"
struct S390TopologyDrawer {
- SysBusDevice parent_obj;
+ DeviceState parent_obj;
BusState *bus;
uint8_t drawer_id;
int cnt;
};
typedef struct S390TopologyDrawer S390TopologyDrawer;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyDrawer, S390_TOPOLOGY_DRAWER)
-#define S390_MAX_DRAWERS 1
+#define S390_MAX_DRAWERS 4
-S390TopologyDrawer *s390_init_topology(void);
+#define TYPE_S390_TOPOLOGY_NODE "topology node"
+#define TYPE_S390_TOPOLOGY_NODE_BUS "node-bus"
+struct S390TopologyNode {
+ SysBusDevice parent_obj;
+ BusState *bus;
+ uint8_t node_id;
+ int cnt;
+};
+typedef struct S390TopologyNode S390TopologyNode;
+OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyNode, S390_TOPOLOGY_NODE)
+#define S390_MAX_NODES 1
-S390TopologyDrawer *s390_get_topology(void);
+S390TopologyNode *s390_init_topology(void);
+S390TopologyNode *s390_get_topology(void);
void s390_topology_setup(MachineState *ms);
void s390_topology_new_cpu(int core_id);
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index 139d46efa4..7f9ff84bf8 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -111,7 +111,7 @@ typedef struct CPUEntry {
uint8_t reserved1;
} QEMU_PACKED CPUEntry;
-#define SCLP_READ_SCP_INFO_MNEST 3
+#define SCLP_READ_SCP_INFO_MNEST 4
#define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128
typedef struct ReadInfo {
SCCBHeader h;
diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
index 08e1fbd13e..fd25c56213 100644
--- a/target/s390x/cpu_topology.c
+++ b/target/s390x/cpu_topology.c
@@ -77,36 +77,64 @@ static int set_book(const MachineState *ms, void *p,
return len;
}
+static int set_drawer(const MachineState *ms, void *p,
+ S390TopologyDrawer *drawer, int level)
+{
+ BusChild *kid;
+ int l, len = 0;
+
+ if (level >= 4) {
+ len += stsi_15_container(p, 3, drawer->drawer_id);
+ p += len;
+ }
+
+ QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
+ l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
+ p += l;
+ len += l;
+ }
+
+ return len;
+}
+
static void setup_stsi(const MachineState *ms, void *p, int level)
{
- S390TopologyDrawer *drawer;
+ S390TopologyNode *node;
SysIB_151x *sysib;
BusChild *kid;
- int nb_sockets, nb_books;
+ int nb_sockets, nb_books, nb_drawers;
int len, l;
sysib = (SysIB_151x *)p;
sysib->mnest = level;
switch (level) {
case 2:
+ nb_drawers = 0;
nb_books = 0;
- nb_sockets = ms->smp.sockets * ms->smp.books;
+ nb_sockets = ms->smp.sockets * ms->smp.books * ms->smp.drawers;
break;
case 3:
+ nb_drawers = 0;
+ nb_books = ms->smp.books * ms->smp.drawers;
+ nb_sockets = ms->smp.sockets;
+ break;
+ case 4:
+ nb_drawers = ms->smp.drawers;
nb_books = ms->smp.books;
nb_sockets = ms->smp.sockets;
break;
}
+ sysib->mag[TOPOLOGY_NR_MAG4] = nb_drawers;
sysib->mag[TOPOLOGY_NR_MAG3] = nb_books;
sysib->mag[TOPOLOGY_NR_MAG2] = nb_sockets;
sysib->mag[TOPOLOGY_NR_MAG1] = ms->smp.cores * ms->smp.threads;
- drawer = s390_get_topology();
+ node = s390_get_topology();
len = sizeof(SysIB_151x);
p += len;
- QTAILQ_FOREACH_REVERSE(kid, &drawer->bus->children, sibling) {
- l = set_book(ms, p, S390_TOPOLOGY_BOOK(kid->child), level);
+ QTAILQ_FOREACH_REVERSE(kid, &node->bus->children, sibling) {
+ l = set_drawer(ms, p, S390_TOPOLOGY_DRAWER(kid->child), level);
p += l;
len += l;
}
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 09/13] s390x: topology: implementing numa for the s390x topology
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
S390x CPU Topology allows a non uniform repartition of the CPU
inside the topology containers, sockets, books and drawers.
We use numa to place the CPU inside the right topology container
and report the non uniform topology to the guest.
Note that s390x needs CPU0 to belong to the topology and consequently
all topology must include CPU0.
We accept a partial QEMU numa definition, in that case undefined CPUs
are added to free slots in the topology starting with slot 0 and going
up.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine.c | 18 ++++++++++
hw/s390x/s390-virtio-ccw.c | 68 ++++++++++++++++++++++++++++++++++----
2 files changed, 79 insertions(+), 7 deletions(-)
diff --git a/hw/core/machine.c b/hw/core/machine.c
index b67f213654..e9847693f0 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -689,6 +689,16 @@ void machine_set_cpu_numa_node(MachineState *machine,
return;
}
+ if (props->has_book_id && !slot->props.has_book_id) {
+ error_setg(errp, "book-id is not supported");
+ return;
+ }
+
+ if (props->has_drawer_id && !slot->props.has_drawer_id) {
+ error_setg(errp, "drawer-id is not supported");
+ return;
+ }
+
/* skip slots with explicit mismatch */
if (props->has_thread_id && props->thread_id != slot->props.thread_id) {
continue;
@@ -706,6 +716,14 @@ void machine_set_cpu_numa_node(MachineState *machine,
continue;
}
+ if (props->has_book_id && props->book_id != slot->props.book_id) {
+ continue;
+ }
+
+ if (props->has_drawer_id && props->drawer_id != slot->props.drawer_id) {
+ continue;
+ }
+
/* reject assignment if slot is already assigned, for compatibility
* of legacy cpu_index mapping with SPAPR core based mapping do not
* error out if cpu thread and matched core have the same node-id */
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 2839c24833..93d1a43583 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -84,14 +84,34 @@ out:
static void s390_init_cpus(MachineState *machine)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
- int i;
+ CPUArchId *slot;
+ int i, n = 0;
/* initialize possible_cpus */
mc->possible_cpu_arch_ids(machine);
s390_topology_setup(machine);
- for (i = 0; i < machine->smp.cpus; i++) {
+
+ /* For NUMA configuration create defined nodes */
+ if (machine->numa_state->num_nodes) {
+ for (i = 0; i < machine->smp.max_cpus; i++) {
+ slot = &machine->possible_cpus->cpus[i];
+ if (slot->arch_id != -1 && n < machine->smp.cpus) {
+ s390x_new_cpu(machine->cpu_type, i, &error_fatal);
+ n++;
+ }
+ }
+ }
+
+ /* create all remaining CPUs */
+ for (i = 0; n < machine->smp.cpus && i < machine->smp.max_cpus; i++) {
+ slot = &machine->possible_cpus->cpus[i];
+ /* For NUMA configuration skip defined nodes */
+ if (machine->numa_state->num_nodes && slot->arch_id != -1) {
+ continue;
+ }
s390x_new_cpu(machine->cpu_type, i, &error_fatal);
+ n++;
}
}
@@ -274,6 +294,11 @@ static void ccw_init(MachineState *machine)
/* register hypercalls */
virtio_ccw_register_hcalls();
+ /* CPU0 must exist on S390x */
+ if (!s390_cpu_addr2state(0)) {
+ error_printf("Core_id 0 must be defined in the CPU configuration\n");
+ exit(1);
+ }
s390_enable_css_support(s390_cpu_addr2state(0));
ret = css_create_css_image(VIRTUAL_CSSID, true);
@@ -306,6 +331,7 @@ static void s390_cpu_plug(HotplugHandler *hotplug_dev,
g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
+ ms->possible_cpus->cpus[cpu->env.core_id].arch_id = cpu->env.core_id;
s390_topology_new_cpu(cpu->env.core_id);
@@ -529,7 +555,9 @@ static CpuInstanceProperties s390_cpu_index_to_props(MachineState *ms,
static const CPUArchIdList *s390_possible_cpu_arch_ids(MachineState *ms)
{
int i;
+ int drawer_id, book_id, socket_id;
unsigned int max_cpus = ms->smp.max_cpus;
+ CPUArchId *slot;
if (ms->possible_cpus) {
g_assert(ms->possible_cpus && ms->possible_cpus->len == max_cpus);
@@ -540,11 +568,25 @@ static const CPUArchIdList *s390_possible_cpu_arch_ids(MachineState *ms)
sizeof(CPUArchId) * max_cpus);
ms->possible_cpus->len = max_cpus;
for (i = 0; i < ms->possible_cpus->len; i++) {
- ms->possible_cpus->cpus[i].type = ms->cpu_type;
- ms->possible_cpus->cpus[i].vcpus_count = 1;
- ms->possible_cpus->cpus[i].arch_id = i;
- ms->possible_cpus->cpus[i].props.has_core_id = true;
- ms->possible_cpus->cpus[i].props.core_id = i;
+ slot = &ms->possible_cpus->cpus[i];
+
+ slot->type = ms->cpu_type;
+ slot->vcpus_count = 1;
+ slot->arch_id = i;
+ slot->props.has_core_id = true;
+ slot->props.core_id = i;
+
+ socket_id = i / ms->smp.cores;
+ slot->props.socket_id = socket_id;
+ slot->props.has_socket_id = true;
+
+ book_id = socket_id / ms->smp.sockets;
+ slot->props.book_id = book_id;
+ slot->props.has_book_id = true;
+
+ drawer_id = book_id / ms->smp.books;
+ slot->props.drawer_id = drawer_id;
+ slot->props.has_drawer_id = true;
}
return ms->possible_cpus;
@@ -586,6 +628,17 @@ static ram_addr_t s390_fixup_ram_size(ram_addr_t sz)
return newsz;
}
+/*
+ * S390 defines CPU topology level 2 as the level for which a change in topology
+ * is worth being taking care of.
+ * Let use level 2, socket, as the numa node.
+ */
+static int64_t s390_get_default_cpu_node_id(const MachineState *ms, int idx)
+{
+ ms->possible_cpus->cpus[idx].arch_id = -1;
+ return idx / ms->smp.cores;
+}
+
static void ccw_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@@ -618,6 +671,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
mc->default_ram_id = "s390.ram";
mc->smp_props.books_supported = true;
mc->smp_props.drawers_supported = true;
+ mc->get_default_cpu_node_id = s390_get_default_cpu_node_id;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 09/13] s390x: topology: implementing numa for the s390x topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
S390x CPU Topology allows a non uniform repartition of the CPU
inside the topology containers, sockets, books and drawers.
We use numa to place the CPU inside the right topology container
and report the non uniform topology to the guest.
Note that s390x needs CPU0 to belong to the topology and consequently
all topology must include CPU0.
We accept a partial QEMU numa definition, in that case undefined CPUs
are added to free slots in the topology starting with slot 0 and going
up.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/core/machine.c | 18 ++++++++++
hw/s390x/s390-virtio-ccw.c | 68 ++++++++++++++++++++++++++++++++++----
2 files changed, 79 insertions(+), 7 deletions(-)
diff --git a/hw/core/machine.c b/hw/core/machine.c
index b67f213654..e9847693f0 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -689,6 +689,16 @@ void machine_set_cpu_numa_node(MachineState *machine,
return;
}
+ if (props->has_book_id && !slot->props.has_book_id) {
+ error_setg(errp, "book-id is not supported");
+ return;
+ }
+
+ if (props->has_drawer_id && !slot->props.has_drawer_id) {
+ error_setg(errp, "drawer-id is not supported");
+ return;
+ }
+
/* skip slots with explicit mismatch */
if (props->has_thread_id && props->thread_id != slot->props.thread_id) {
continue;
@@ -706,6 +716,14 @@ void machine_set_cpu_numa_node(MachineState *machine,
continue;
}
+ if (props->has_book_id && props->book_id != slot->props.book_id) {
+ continue;
+ }
+
+ if (props->has_drawer_id && props->drawer_id != slot->props.drawer_id) {
+ continue;
+ }
+
/* reject assignment if slot is already assigned, for compatibility
* of legacy cpu_index mapping with SPAPR core based mapping do not
* error out if cpu thread and matched core have the same node-id */
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 2839c24833..93d1a43583 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -84,14 +84,34 @@ out:
static void s390_init_cpus(MachineState *machine)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
- int i;
+ CPUArchId *slot;
+ int i, n = 0;
/* initialize possible_cpus */
mc->possible_cpu_arch_ids(machine);
s390_topology_setup(machine);
- for (i = 0; i < machine->smp.cpus; i++) {
+
+ /* For NUMA configuration create defined nodes */
+ if (machine->numa_state->num_nodes) {
+ for (i = 0; i < machine->smp.max_cpus; i++) {
+ slot = &machine->possible_cpus->cpus[i];
+ if (slot->arch_id != -1 && n < machine->smp.cpus) {
+ s390x_new_cpu(machine->cpu_type, i, &error_fatal);
+ n++;
+ }
+ }
+ }
+
+ /* create all remaining CPUs */
+ for (i = 0; n < machine->smp.cpus && i < machine->smp.max_cpus; i++) {
+ slot = &machine->possible_cpus->cpus[i];
+ /* For NUMA configuration skip defined nodes */
+ if (machine->numa_state->num_nodes && slot->arch_id != -1) {
+ continue;
+ }
s390x_new_cpu(machine->cpu_type, i, &error_fatal);
+ n++;
}
}
@@ -274,6 +294,11 @@ static void ccw_init(MachineState *machine)
/* register hypercalls */
virtio_ccw_register_hcalls();
+ /* CPU0 must exist on S390x */
+ if (!s390_cpu_addr2state(0)) {
+ error_printf("Core_id 0 must be defined in the CPU configuration\n");
+ exit(1);
+ }
s390_enable_css_support(s390_cpu_addr2state(0));
ret = css_create_css_image(VIRTUAL_CSSID, true);
@@ -306,6 +331,7 @@ static void s390_cpu_plug(HotplugHandler *hotplug_dev,
g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
+ ms->possible_cpus->cpus[cpu->env.core_id].arch_id = cpu->env.core_id;
s390_topology_new_cpu(cpu->env.core_id);
@@ -529,7 +555,9 @@ static CpuInstanceProperties s390_cpu_index_to_props(MachineState *ms,
static const CPUArchIdList *s390_possible_cpu_arch_ids(MachineState *ms)
{
int i;
+ int drawer_id, book_id, socket_id;
unsigned int max_cpus = ms->smp.max_cpus;
+ CPUArchId *slot;
if (ms->possible_cpus) {
g_assert(ms->possible_cpus && ms->possible_cpus->len == max_cpus);
@@ -540,11 +568,25 @@ static const CPUArchIdList *s390_possible_cpu_arch_ids(MachineState *ms)
sizeof(CPUArchId) * max_cpus);
ms->possible_cpus->len = max_cpus;
for (i = 0; i < ms->possible_cpus->len; i++) {
- ms->possible_cpus->cpus[i].type = ms->cpu_type;
- ms->possible_cpus->cpus[i].vcpus_count = 1;
- ms->possible_cpus->cpus[i].arch_id = i;
- ms->possible_cpus->cpus[i].props.has_core_id = true;
- ms->possible_cpus->cpus[i].props.core_id = i;
+ slot = &ms->possible_cpus->cpus[i];
+
+ slot->type = ms->cpu_type;
+ slot->vcpus_count = 1;
+ slot->arch_id = i;
+ slot->props.has_core_id = true;
+ slot->props.core_id = i;
+
+ socket_id = i / ms->smp.cores;
+ slot->props.socket_id = socket_id;
+ slot->props.has_socket_id = true;
+
+ book_id = socket_id / ms->smp.sockets;
+ slot->props.book_id = book_id;
+ slot->props.has_book_id = true;
+
+ drawer_id = book_id / ms->smp.books;
+ slot->props.drawer_id = drawer_id;
+ slot->props.has_drawer_id = true;
}
return ms->possible_cpus;
@@ -586,6 +628,17 @@ static ram_addr_t s390_fixup_ram_size(ram_addr_t sz)
return newsz;
}
+/*
+ * S390 defines CPU topology level 2 as the level for which a change in topology
+ * is worth being taking care of.
+ * Let use level 2, socket, as the numa node.
+ */
+static int64_t s390_get_default_cpu_node_id(const MachineState *ms, int idx)
+{
+ ms->possible_cpus->cpus[idx].arch_id = -1;
+ return idx / ms->smp.cores;
+}
+
static void ccw_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@@ -618,6 +671,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
mc->default_ram_id = "s390.ram";
mc->smp_props.books_supported = true;
mc->smp_props.drawers_supported = true;
+ mc->get_default_cpu_node_id = s390_get_default_cpu_node_id;
}
static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 10/13] s390x: kvm: topology: interception of PTF instruction
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
When the host supports the CPU topology facility, the PTF
instruction with function code 2 is interpreted by the SIE,
provided that the userland hypervizor activates the interpretation
by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
The PTF instructions with function code 0 and 1 are intercepted
and must be emulated by the userland hypervizor.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/s390-virtio-ccw.c | 50 ++++++++++++++++++++++++++++++
include/hw/s390x/s390-virtio-ccw.h | 6 ++++
target/s390x/kvm/kvm.c | 14 +++++++++
3 files changed, 70 insertions(+)
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 93d1a43583..1ffaddebcc 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -434,6 +434,56 @@ static void s390_pv_prepare_reset(S390CcwMachineState *ms)
s390_pv_prep_reset();
}
+/*
+ * s390_handle_ptf:
+ *
+ * @register 1: contains the function code
+ *
+ * Function codes 0 and 1 handle the CPU polarization.
+ * We assume an horizontal topology, the only one supported currently
+ * by Linux, consequently we answer to function code 0, requesting
+ * horizontal polarization that it is already the current polarization
+ * and reject vertical polarization request without further explanation.
+ *
+ * Function code 2 is handling topology changes and is interpreted
+ * by the SIE.
+ */
+int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra)
+{
+ CPUS390XState *env = &cpu->env;
+ uint64_t reg = env->regs[r1];
+ uint8_t fc = reg & S390_TOPO_FC_MASK;
+
+ if (!s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ s390_program_interrupt(env, PGM_OPERATION, ra);
+ return 0;
+ }
+
+ if (env->psw.mask & PSW_MASK_PSTATE) {
+ s390_program_interrupt(env, PGM_PRIVILEGED, ra);
+ return 0;
+ }
+
+ if (reg & ~S390_TOPO_FC_MASK) {
+ s390_program_interrupt(env, PGM_SPECIFICATION, ra);
+ return 0;
+ }
+
+ switch (fc) {
+ case 0: /* Horizontal polarization is already set */
+ env->regs[r1] |= S390_PTF_REASON_DONE;
+ return 2;
+ case 1: /* Vertical polarization is not supported */
+ env->regs[r1] |= S390_PTF_REASON_NONE;
+ return 2;
+ default:
+ /* Note that fc == 2 is interpreted by the SIE */
+ s390_program_interrupt(env, PGM_SPECIFICATION, ra);
+ }
+
+ return 0;
+}
+
static void s390_machine_reset(MachineState *machine)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h
index 3331990e02..ac4b4a92e7 100644
--- a/include/hw/s390x/s390-virtio-ccw.h
+++ b/include/hw/s390x/s390-virtio-ccw.h
@@ -30,6 +30,12 @@ struct S390CcwMachineState {
uint8_t loadparm[8];
};
+#define S390_PTF_REASON_NONE (0x00 << 8)
+#define S390_PTF_REASON_DONE (0x01 << 8)
+#define S390_PTF_REASON_BUSY (0x02 << 8)
+#define S390_TOPO_FC_MASK 0xffUL
+int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra);
+
struct S390CcwMachineClass {
/*< private >*/
MachineClass parent_class;
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 27b3fbfa09..e3792e52c2 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -98,6 +98,7 @@
#define PRIV_B9_EQBS 0x9c
#define PRIV_B9_CLP 0xa0
+#define PRIV_B9_PTF 0xa2
#define PRIV_B9_PCISTG 0xd0
#define PRIV_B9_PCILG 0xd2
#define PRIV_B9_RPCIT 0xd3
@@ -1453,6 +1454,16 @@ static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
}
}
+static int kvm_handle_ptf(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipb >> 20) & 0x0f;
+ int ret;
+
+ ret = s390_handle_ptf(cpu, r1, RA_IGNORED);
+ setcc(cpu, ret);
+ return 0;
+}
+
static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
@@ -1470,6 +1481,9 @@ static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
case PRIV_B9_RPCIT:
r = kvm_rpcit_service_call(cpu, run);
break;
+ case PRIV_B9_PTF:
+ r = kvm_handle_ptf(cpu, run);
+ break;
case PRIV_B9_EQBS:
/* just inject exception */
r = -1;
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 10/13] s390x: kvm: topology: interception of PTF instruction
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
When the host supports the CPU topology facility, the PTF
instruction with function code 2 is interpreted by the SIE,
provided that the userland hypervizor activates the interpretation
by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
The PTF instructions with function code 0 and 1 are intercepted
and must be emulated by the userland hypervizor.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/s390-virtio-ccw.c | 50 ++++++++++++++++++++++++++++++
include/hw/s390x/s390-virtio-ccw.h | 6 ++++
target/s390x/kvm/kvm.c | 14 +++++++++
3 files changed, 70 insertions(+)
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 93d1a43583..1ffaddebcc 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -434,6 +434,56 @@ static void s390_pv_prepare_reset(S390CcwMachineState *ms)
s390_pv_prep_reset();
}
+/*
+ * s390_handle_ptf:
+ *
+ * @register 1: contains the function code
+ *
+ * Function codes 0 and 1 handle the CPU polarization.
+ * We assume an horizontal topology, the only one supported currently
+ * by Linux, consequently we answer to function code 0, requesting
+ * horizontal polarization that it is already the current polarization
+ * and reject vertical polarization request without further explanation.
+ *
+ * Function code 2 is handling topology changes and is interpreted
+ * by the SIE.
+ */
+int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra)
+{
+ CPUS390XState *env = &cpu->env;
+ uint64_t reg = env->regs[r1];
+ uint8_t fc = reg & S390_TOPO_FC_MASK;
+
+ if (!s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ s390_program_interrupt(env, PGM_OPERATION, ra);
+ return 0;
+ }
+
+ if (env->psw.mask & PSW_MASK_PSTATE) {
+ s390_program_interrupt(env, PGM_PRIVILEGED, ra);
+ return 0;
+ }
+
+ if (reg & ~S390_TOPO_FC_MASK) {
+ s390_program_interrupt(env, PGM_SPECIFICATION, ra);
+ return 0;
+ }
+
+ switch (fc) {
+ case 0: /* Horizontal polarization is already set */
+ env->regs[r1] |= S390_PTF_REASON_DONE;
+ return 2;
+ case 1: /* Vertical polarization is not supported */
+ env->regs[r1] |= S390_PTF_REASON_NONE;
+ return 2;
+ default:
+ /* Note that fc == 2 is interpreted by the SIE */
+ s390_program_interrupt(env, PGM_SPECIFICATION, ra);
+ }
+
+ return 0;
+}
+
static void s390_machine_reset(MachineState *machine)
{
S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h
index 3331990e02..ac4b4a92e7 100644
--- a/include/hw/s390x/s390-virtio-ccw.h
+++ b/include/hw/s390x/s390-virtio-ccw.h
@@ -30,6 +30,12 @@ struct S390CcwMachineState {
uint8_t loadparm[8];
};
+#define S390_PTF_REASON_NONE (0x00 << 8)
+#define S390_PTF_REASON_DONE (0x01 << 8)
+#define S390_PTF_REASON_BUSY (0x02 << 8)
+#define S390_TOPO_FC_MASK 0xffUL
+int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra);
+
struct S390CcwMachineClass {
/*< private >*/
MachineClass parent_class;
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 27b3fbfa09..e3792e52c2 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -98,6 +98,7 @@
#define PRIV_B9_EQBS 0x9c
#define PRIV_B9_CLP 0xa0
+#define PRIV_B9_PTF 0xa2
#define PRIV_B9_PCISTG 0xd0
#define PRIV_B9_PCILG 0xd2
#define PRIV_B9_RPCIT 0xd3
@@ -1453,6 +1454,16 @@ static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
}
}
+static int kvm_handle_ptf(S390CPU *cpu, struct kvm_run *run)
+{
+ uint8_t r1 = (run->s390_sieic.ipb >> 20) & 0x0f;
+ int ret;
+
+ ret = s390_handle_ptf(cpu, r1, RA_IGNORED);
+ setcc(cpu, ret);
+ return 0;
+}
+
static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
{
int r = 0;
@@ -1470,6 +1481,9 @@ static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
case PRIV_B9_RPCIT:
r = kvm_rpcit_service_call(cpu, run);
break;
+ case PRIV_B9_PTF:
+ r = kvm_handle_ptf(cpu, run);
+ break;
case PRIV_B9_EQBS:
/* just inject exception */
r = -1;
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 11/13] s390x: topology: resetting the Topology-Change-Report
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
During a subsystem reset the Topology-Change-Report is cleared.
Let's ask KVM to clear the MTCR in the case of a subsystem reset.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 6 ++++++
hw/s390x/s390-virtio-ccw.c | 1 +
target/s390x/cpu-sysemu.c | 7 +++++++
target/s390x/cpu.h | 1 +
target/s390x/kvm/kvm.c | 31 +++++++++++++++++++++++++++++++
target/s390x/kvm/kvm_s390x.h | 2 ++
6 files changed, 48 insertions(+)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 3ae86f80f1..a4e9840cc0 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -561,6 +561,11 @@ static void s390_node_device_realize(DeviceState *dev, Error **errp)
qbus_set_hotplug_handler(bus, OBJECT(dev));
}
+static void s390_topology_reset(DeviceState *dev)
+{
+ s390_cpu_topology_mtr_reset();
+}
+
static void node_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@@ -570,6 +575,7 @@ static void node_class_init(ObjectClass *oc, void *data)
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->realize = s390_node_device_realize;
dc->desc = "topology node";
+ dc->reset = s390_topology_reset;
}
static const TypeInfo node_info = {
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 1ffaddebcc..d46bff1a8a 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -121,6 +121,7 @@ static const char *const reset_dev_types[] = {
"s390-flic",
"diag288",
TYPE_S390_PCI_HOST_BRIDGE,
+ TYPE_S390_TOPOLOGY_NODE,
};
static void subsystem_reset(void)
diff --git a/target/s390x/cpu-sysemu.c b/target/s390x/cpu-sysemu.c
index 948e4bd3e0..11d0d87301 100644
--- a/target/s390x/cpu-sysemu.c
+++ b/target/s390x/cpu-sysemu.c
@@ -306,3 +306,10 @@ void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg)
kvm_s390_set_diag318(cs, arg.host_ulong);
}
}
+
+void s390_cpu_topology_mtr_reset(void)
+{
+ if (kvm_enabled()) {
+ kvm_s390_cpu_topology_reset();
+ }
+}
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index a617c943ff..61a71a7807 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -825,6 +825,7 @@ void s390_enable_css_support(S390CPU *cpu);
void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
int vq, bool assign);
+void s390_cpu_topology_mtr_reset(void);
#ifndef CONFIG_USER_ONLY
unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
#else
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index e3792e52c2..f3924633c6 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -2585,3 +2585,34 @@ bool kvm_arch_cpu_check_are_resettable(void)
{
return true;
}
+
+static void kvm_s390_set_mtr(uint64_t attr)
+{
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CPU_TOPOLOGY,
+ .attr = attr,
+ };
+
+ int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
+
+ if (ret) {
+ error_report("Failed to set cpu topology attribute %lu: %s",
+ attr, strerror(-ret));
+ }
+}
+
+static void kvm_s390_reset_mtr(void)
+{
+ uint64_t attr = KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, attr)) {
+ kvm_s390_set_mtr(attr);
+ }
+}
+
+void kvm_s390_cpu_topology_reset(void)
+{
+ if (s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ kvm_s390_reset_mtr();
+ }
+}
diff --git a/target/s390x/kvm/kvm_s390x.h b/target/s390x/kvm/kvm_s390x.h
index 05a5e1e6f4..d717c05827 100644
--- a/target/s390x/kvm/kvm_s390x.h
+++ b/target/s390x/kvm/kvm_s390x.h
@@ -46,4 +46,6 @@ void kvm_s390_restart_interrupt(S390CPU *cpu);
void kvm_s390_stop_interrupt(S390CPU *cpu);
void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info);
+void kvm_s390_cpu_topology_reset(void);
+
#endif /* KVM_S390X_H */
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 11/13] s390x: topology: resetting the Topology-Change-Report
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
During a subsystem reset the Topology-Change-Report is cleared.
Let's ask KVM to clear the MTCR in the case of a subsystem reset.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 6 ++++++
hw/s390x/s390-virtio-ccw.c | 1 +
target/s390x/cpu-sysemu.c | 7 +++++++
target/s390x/cpu.h | 1 +
target/s390x/kvm/kvm.c | 31 +++++++++++++++++++++++++++++++
target/s390x/kvm/kvm_s390x.h | 2 ++
6 files changed, 48 insertions(+)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index 3ae86f80f1..a4e9840cc0 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -561,6 +561,11 @@ static void s390_node_device_realize(DeviceState *dev, Error **errp)
qbus_set_hotplug_handler(bus, OBJECT(dev));
}
+static void s390_topology_reset(DeviceState *dev)
+{
+ s390_cpu_topology_mtr_reset();
+}
+
static void node_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@@ -570,6 +575,7 @@ static void node_class_init(ObjectClass *oc, void *data)
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->realize = s390_node_device_realize;
dc->desc = "topology node";
+ dc->reset = s390_topology_reset;
}
static const TypeInfo node_info = {
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 1ffaddebcc..d46bff1a8a 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -121,6 +121,7 @@ static const char *const reset_dev_types[] = {
"s390-flic",
"diag288",
TYPE_S390_PCI_HOST_BRIDGE,
+ TYPE_S390_TOPOLOGY_NODE,
};
static void subsystem_reset(void)
diff --git a/target/s390x/cpu-sysemu.c b/target/s390x/cpu-sysemu.c
index 948e4bd3e0..11d0d87301 100644
--- a/target/s390x/cpu-sysemu.c
+++ b/target/s390x/cpu-sysemu.c
@@ -306,3 +306,10 @@ void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg)
kvm_s390_set_diag318(cs, arg.host_ulong);
}
}
+
+void s390_cpu_topology_mtr_reset(void)
+{
+ if (kvm_enabled()) {
+ kvm_s390_cpu_topology_reset();
+ }
+}
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index a617c943ff..61a71a7807 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -825,6 +825,7 @@ void s390_enable_css_support(S390CPU *cpu);
void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
int vq, bool assign);
+void s390_cpu_topology_mtr_reset(void);
#ifndef CONFIG_USER_ONLY
unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
#else
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index e3792e52c2..f3924633c6 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -2585,3 +2585,34 @@ bool kvm_arch_cpu_check_are_resettable(void)
{
return true;
}
+
+static void kvm_s390_set_mtr(uint64_t attr)
+{
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CPU_TOPOLOGY,
+ .attr = attr,
+ };
+
+ int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
+
+ if (ret) {
+ error_report("Failed to set cpu topology attribute %lu: %s",
+ attr, strerror(-ret));
+ }
+}
+
+static void kvm_s390_reset_mtr(void)
+{
+ uint64_t attr = KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, attr)) {
+ kvm_s390_set_mtr(attr);
+ }
+}
+
+void kvm_s390_cpu_topology_reset(void)
+{
+ if (s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ kvm_s390_reset_mtr();
+ }
+}
diff --git a/target/s390x/kvm/kvm_s390x.h b/target/s390x/kvm/kvm_s390x.h
index 05a5e1e6f4..d717c05827 100644
--- a/target/s390x/kvm/kvm_s390x.h
+++ b/target/s390x/kvm/kvm_s390x.h
@@ -46,4 +46,6 @@ void kvm_s390_restart_interrupt(S390CPU *cpu);
void kvm_s390_stop_interrupt(S390CPU *cpu);
void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info);
+void kvm_s390_cpu_topology_reset(void);
+
#endif /* KVM_S390X_H */
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 12/13] s390x: CPU topology: CPU topology migration
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
To migrate the Multiple Topology Change report, MTCR, we
get it from KVM and save its state in the topology VM State
Description during the presave and restore it to KVM on the
destination during the postload.
The migration state is needed whenever the CPU topology
feature is activated.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 42 ++++++++++++++++++++++++++++++++
include/hw/s390x/cpu-topology.h | 2 ++
target/s390x/cpu.h | 2 ++
target/s390x/cpu_models.c | 1 +
target/s390x/kvm/kvm.c | 43 ++++++++++++++++++++++++++++++---
5 files changed, 87 insertions(+), 3 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index a4e9840cc0..4626af7f81 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -19,6 +19,8 @@
#include "qemu/typedefs.h"
#include "target/s390x/cpu.h"
#include "hw/s390x/s390-virtio-ccw.h"
+#include "migration/vmstate.h"
+#include "qemu/error-report.h"
static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
int origin)
@@ -566,6 +568,45 @@ static void s390_topology_reset(DeviceState *dev)
s390_cpu_topology_mtr_reset();
}
+static int cpu_topology_postload(void *opaque, int version_id)
+{
+ S390TopologyNode *node = opaque;
+
+ if (node->topology_needed != s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ return -EINVAL;
+ }
+
+ return s390_cpu_topology_mtcr_set(node->mtcr);
+}
+
+static int cpu_topology_presave(void *opaque)
+{
+ S390TopologyNode *node = opaque;
+
+ node->topology_needed = s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY);
+ return s390_cpu_topology_mtcr_get(&node->mtcr);
+}
+
+static bool cpu_topology_needed(void *opaque)
+{
+ return s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY);
+}
+
+
+const VMStateDescription vmstate_cpu_topology = {
+ .name = "cpu_topology",
+ .version_id = 1,
+ .pre_save = cpu_topology_presave,
+ .post_load = cpu_topology_postload,
+ .minimum_version_id = 1,
+ .needed = cpu_topology_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(mtcr, S390TopologyNode),
+ VMSTATE_BOOL(topology_needed, S390TopologyNode),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static void node_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@@ -576,6 +617,7 @@ static void node_class_init(ObjectClass *oc, void *data)
dc->realize = s390_node_device_realize;
dc->desc = "topology node";
dc->reset = s390_topology_reset;
+ dc->vmsd = &vmstate_cpu_topology;
}
static const TypeInfo node_info = {
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index 10e4bd754f..49e4bd3a8d 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -84,6 +84,8 @@ struct S390TopologyNode {
BusState *bus;
uint8_t node_id;
int cnt;
+ uint16_t mtcr;
+ bool topology_needed;
};
typedef struct S390TopologyNode S390TopologyNode;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyNode, S390_TOPOLOGY_NODE)
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index 61a71a7807..fe731783a0 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -826,6 +826,8 @@ void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
int vq, bool assign);
void s390_cpu_topology_mtr_reset(void);
+int s390_cpu_topology_mtcr_set(uint16_t mtcr);
+int s390_cpu_topology_mtcr_get(uint16_t *mtcr);
#ifndef CONFIG_USER_ONLY
unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
#else
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 6d71428056..4947196bcb 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -254,6 +254,7 @@ bool s390_has_feat(S390Feat feat)
case S390_FEAT_SIE_CMMA:
case S390_FEAT_SIE_PFMFI:
case S390_FEAT_SIE_IBS:
+ case S390_FEAT_CONFIGURATION_TOPOLOGY:
return false;
break;
default:
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index f3924633c6..17f426864b 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -64,6 +64,8 @@
} \
} while (0)
+#include "qemu/error-report.h"
+
#define kvm_vm_check_mem_attr(s, attr) \
kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
@@ -2592,22 +2594,57 @@ static void kvm_s390_set_mtr(uint64_t attr)
.group = KVM_S390_VM_CPU_TOPOLOGY,
.attr = attr,
};
+ int ret;
- int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
-
+ ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
if (ret) {
error_report("Failed to set cpu topology attribute %lu: %s",
attr, strerror(-ret));
}
}
-static void kvm_s390_reset_mtr(void)
+int s390_cpu_topology_mtcr_set(uint16_t mtcr)
{
uint64_t attr = KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+ attr = mtcr ? KVM_S390_VM_CPU_TOPO_MTR_SET :
+ KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+
if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, attr)) {
kvm_s390_set_mtr(attr);
}
+
+ return 0;
+}
+
+int s390_cpu_topology_mtcr_get(uint16_t *mtcr)
+{
+ struct kvm_s390_cpu_topology topology;
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CPU_TOPOLOGY,
+ .addr = (uint64_t)&topology,
+ };
+ int ret;
+
+ if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, 0)) {
+ return -ENODEV;
+ }
+
+ ret = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attribute);
+ if (ret) {
+ error_report("Failed to get cpu topology");
+ return ret;
+ }
+ *mtcr = topology.mtcr;
+ return 0;
+}
+
+static void kvm_s390_reset_mtr(void)
+{
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY,
+ KVM_S390_VM_CPU_TOPO_MTR_CLEAR)) {
+ kvm_s390_set_mtr(KVM_S390_VM_CPU_TOPO_MTR_CLEAR);
+ }
}
void kvm_s390_cpu_topology_reset(void)
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 12/13] s390x: CPU topology: CPU topology migration
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
To migrate the Multiple Topology Change report, MTCR, we
get it from KVM and save its state in the topology VM State
Description during the presave and restore it to KVM on the
destination during the postload.
The migration state is needed whenever the CPU topology
feature is activated.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
hw/s390x/cpu-topology.c | 42 ++++++++++++++++++++++++++++++++
include/hw/s390x/cpu-topology.h | 2 ++
target/s390x/cpu.h | 2 ++
target/s390x/cpu_models.c | 1 +
target/s390x/kvm/kvm.c | 43 ++++++++++++++++++++++++++++++---
5 files changed, 87 insertions(+), 3 deletions(-)
diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
index a4e9840cc0..4626af7f81 100644
--- a/hw/s390x/cpu-topology.c
+++ b/hw/s390x/cpu-topology.c
@@ -19,6 +19,8 @@
#include "qemu/typedefs.h"
#include "target/s390x/cpu.h"
#include "hw/s390x/s390-virtio-ccw.h"
+#include "migration/vmstate.h"
+#include "qemu/error-report.h"
static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
int origin)
@@ -566,6 +568,45 @@ static void s390_topology_reset(DeviceState *dev)
s390_cpu_topology_mtr_reset();
}
+static int cpu_topology_postload(void *opaque, int version_id)
+{
+ S390TopologyNode *node = opaque;
+
+ if (node->topology_needed != s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
+ return -EINVAL;
+ }
+
+ return s390_cpu_topology_mtcr_set(node->mtcr);
+}
+
+static int cpu_topology_presave(void *opaque)
+{
+ S390TopologyNode *node = opaque;
+
+ node->topology_needed = s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY);
+ return s390_cpu_topology_mtcr_get(&node->mtcr);
+}
+
+static bool cpu_topology_needed(void *opaque)
+{
+ return s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY);
+}
+
+
+const VMStateDescription vmstate_cpu_topology = {
+ .name = "cpu_topology",
+ .version_id = 1,
+ .pre_save = cpu_topology_presave,
+ .post_load = cpu_topology_postload,
+ .minimum_version_id = 1,
+ .needed = cpu_topology_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16(mtcr, S390TopologyNode),
+ VMSTATE_BOOL(topology_needed, S390TopologyNode),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static void node_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@@ -576,6 +617,7 @@ static void node_class_init(ObjectClass *oc, void *data)
dc->realize = s390_node_device_realize;
dc->desc = "topology node";
dc->reset = s390_topology_reset;
+ dc->vmsd = &vmstate_cpu_topology;
}
static const TypeInfo node_info = {
diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
index 10e4bd754f..49e4bd3a8d 100644
--- a/include/hw/s390x/cpu-topology.h
+++ b/include/hw/s390x/cpu-topology.h
@@ -84,6 +84,8 @@ struct S390TopologyNode {
BusState *bus;
uint8_t node_id;
int cnt;
+ uint16_t mtcr;
+ bool topology_needed;
};
typedef struct S390TopologyNode S390TopologyNode;
OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyNode, S390_TOPOLOGY_NODE)
diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
index 61a71a7807..fe731783a0 100644
--- a/target/s390x/cpu.h
+++ b/target/s390x/cpu.h
@@ -826,6 +826,8 @@ void s390_do_cpu_set_diag318(CPUState *cs, run_on_cpu_data arg);
int s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch_id,
int vq, bool assign);
void s390_cpu_topology_mtr_reset(void);
+int s390_cpu_topology_mtcr_set(uint16_t mtcr);
+int s390_cpu_topology_mtcr_get(uint16_t *mtcr);
#ifndef CONFIG_USER_ONLY
unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu);
#else
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 6d71428056..4947196bcb 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -254,6 +254,7 @@ bool s390_has_feat(S390Feat feat)
case S390_FEAT_SIE_CMMA:
case S390_FEAT_SIE_PFMFI:
case S390_FEAT_SIE_IBS:
+ case S390_FEAT_CONFIGURATION_TOPOLOGY:
return false;
break;
default:
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index f3924633c6..17f426864b 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -64,6 +64,8 @@
} \
} while (0)
+#include "qemu/error-report.h"
+
#define kvm_vm_check_mem_attr(s, attr) \
kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
@@ -2592,22 +2594,57 @@ static void kvm_s390_set_mtr(uint64_t attr)
.group = KVM_S390_VM_CPU_TOPOLOGY,
.attr = attr,
};
+ int ret;
- int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
-
+ ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
if (ret) {
error_report("Failed to set cpu topology attribute %lu: %s",
attr, strerror(-ret));
}
}
-static void kvm_s390_reset_mtr(void)
+int s390_cpu_topology_mtcr_set(uint16_t mtcr)
{
uint64_t attr = KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+ attr = mtcr ? KVM_S390_VM_CPU_TOPO_MTR_SET :
+ KVM_S390_VM_CPU_TOPO_MTR_CLEAR;
+
if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, attr)) {
kvm_s390_set_mtr(attr);
}
+
+ return 0;
+}
+
+int s390_cpu_topology_mtcr_get(uint16_t *mtcr)
+{
+ struct kvm_s390_cpu_topology topology;
+ struct kvm_device_attr attribute = {
+ .group = KVM_S390_VM_CPU_TOPOLOGY,
+ .addr = (uint64_t)&topology,
+ };
+ int ret;
+
+ if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY, 0)) {
+ return -ENODEV;
+ }
+
+ ret = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attribute);
+ if (ret) {
+ error_report("Failed to get cpu topology");
+ return ret;
+ }
+ *mtcr = topology.mtcr;
+ return 0;
+}
+
+static void kvm_s390_reset_mtr(void)
+{
+ if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_TOPOLOGY,
+ KVM_S390_VM_CPU_TOPO_MTR_CLEAR)) {
+ kvm_s390_set_mtr(KVM_S390_VM_CPU_TOPO_MTR_CLEAR);
+ }
}
void kvm_s390_cpu_topology_reset(void)
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 13/13] s390x: topology: activating CPU topology
2022-04-20 11:57 ` Pierre Morel
@ 2022-04-20 11:57 ` Pierre Morel
-1 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, thuth,
cohuck, mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd,
eblake, armbru, seiden, nrb, frankja
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
target/s390x/kvm/kvm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 17f426864b..cae37cddc3 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -366,6 +366,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_CPU_TOPOLOGY, 0);
if (ri_allowed()) {
if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
cap_ri = 1;
@@ -2460,6 +2461,14 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
set_bit(S390_FEAT_UNPACK, model->features);
}
+ /*
+ * If we have the CPU Topology implemented in KVM activate
+ * the CPU TOPOLOGY feature.
+ */
+ if (kvm_check_extension(kvm_state, KVM_CAP_S390_CPU_TOPOLOGY)) {
+ set_bit(S390_FEAT_CONFIGURATION_TOPOLOGY, model->features);
+ }
+
/* We emulate a zPCI bus and AEN, therefore we don't need HW support */
set_bit(S390_FEAT_ZPCI, model->features);
set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* [PATCH v7 13/13] s390x: topology: activating CPU topology
@ 2022-04-20 11:57 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-04-20 11:57 UTC (permalink / raw)
To: qemu-s390x
Cc: thuth, seiden, nrb, ehabkost, kvm, david, eblake, cohuck,
richard.henderson, qemu-devel, armbru, pasic, borntraeger, mst,
pbonzini, philmd, frankja
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
---
target/s390x/kvm/kvm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
index 17f426864b..cae37cddc3 100644
--- a/target/s390x/kvm/kvm.c
+++ b/target/s390x/kvm/kvm.c
@@ -366,6 +366,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
+ kvm_vm_enable_cap(s, KVM_CAP_S390_CPU_TOPOLOGY, 0);
if (ri_allowed()) {
if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) {
cap_ri = 1;
@@ -2460,6 +2461,14 @@ void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp)
set_bit(S390_FEAT_UNPACK, model->features);
}
+ /*
+ * If we have the CPU Topology implemented in KVM activate
+ * the CPU TOPOLOGY feature.
+ */
+ if (kvm_check_extension(kvm_state, KVM_CAP_S390_CPU_TOPOLOGY)) {
+ set_bit(S390_FEAT_CONFIGURATION_TOPOLOGY, model->features);
+ }
+
/* We emulate a zPCI bus and AEN, therefore we don't need HW support */
set_bit(S390_FEAT_ZPCI, model->features);
set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features);
--
2.27.0
^ permalink raw reply related [flat|nested] 42+ messages in thread
* Re: [PATCH v7 03/13] s390x: topology: CPU topology objects and structures
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-19 10:45 ` Thomas Huth
2022-05-19 15:22 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-19 10:45 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> We use new objects to have a dynamic administration of the CPU topology.
> The highest level object in this implementation is the s390 book and
> in this first implementation of CPU topology for S390 we have a single
> book.
> The book is built as a SYSBUS bridge during the CPU initialization.
> Other objects, sockets and core will be built after the parsing
> of the QEMU -smp argument.
>
> Every object under this single book will be build dynamically
> immediately after a CPU has be realized if it is needed.
> The CPU will fill the sockets once after the other, according to the
> number of core per socket defined during the smp parsing.
>
> Each CPU inside a socket will be represented by a bit in a 64bit
> unsigned long. Set on plug and clear on unplug of a CPU.
>
> For the S390 CPU topology, thread and cores are merged into
> topology cores and the number of topology cores is the multiplication
> of cores by the numbers of threads.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
> hw/s390x/cpu-topology.c | 361 ++++++++++++++++++++++++++++++++
> hw/s390x/meson.build | 1 +
> hw/s390x/s390-virtio-ccw.c | 4 +
> include/hw/s390x/cpu-topology.h | 74 +++++++
> target/s390x/cpu.h | 47 +++++
> 5 files changed, 487 insertions(+)
> create mode 100644 hw/s390x/cpu-topology.c
> create mode 100644 include/hw/s390x/cpu-topology.h
>
> diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
> new file mode 100644
> index 0000000000..b7131b4ac3
> --- /dev/null
> +++ b/hw/s390x/cpu-topology.c
> @@ -0,0 +1,361 @@
> +/*
> + * CPU Topology
> + *
> + * Copyright 2021 IBM Corp.
2022 now?
> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
> +
> + * This work is licensed under the terms of the GNU GPL, version 2 or (at
> + * your option) any later version. See the COPYING file in the top-level
> + * directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "qemu/error-report.h"
> +#include "hw/sysbus.h"
> +#include "hw/s390x/cpu-topology.h"
> +#include "hw/qdev-properties.h"
> +#include "hw/boards.h"
> +#include "qemu/typedefs.h"
> +#include "target/s390x/cpu.h"
> +#include "hw/s390x/s390-virtio-ccw.h"
> +
> +static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
> + int origin)
> +{
> + DeviceState *dev;
> + S390TopologyCores *cores;
> + const MachineState *ms = MACHINE(qdev_get_machine());
> +
> + if (socket->bus->num_children >= (ms->smp.cores * ms->smp.threads)) {
You can drop the innermost parentheses.
Also, can this situation ever happen? If not, please turn it into an
assert() instead.
> + return NULL;
You return NULL here, but the callers don't check for NULL and use the
pointer anyway. So either this should not return NULL or you have to check
the value at the calling site.
> + }
> +
> + dev = qdev_new(TYPE_S390_TOPOLOGY_CORES);
> + qdev_realize_and_unref(dev, socket->bus, &error_fatal);
> +
> + cores = S390_TOPOLOGY_CORES(dev);
> + cores->origin = origin;
> + socket->cnt += 1;
> +
> + return cores;
> +}
> +
> +static S390TopologySocket *s390_create_socket(S390TopologyBook *book, int id)
> +{
> + DeviceState *dev;
> + S390TopologySocket *socket;
> + const MachineState *ms = MACHINE(qdev_get_machine());
You already look up the MachineState pointer in s390_topology_new_cpu() ...
so to optimize a little bit, you could pass it in as parameter here instead.
> + if (book->bus->num_children >= ms->smp.sockets) {
> + return NULL;
Here again - the callers do not check for NULL pointer values, so this
should either not return NULL or the callers need to be changed.
> + }
> +
> + dev = qdev_new(TYPE_S390_TOPOLOGY_SOCKET);
> + qdev_realize_and_unref(dev, book->bus, &error_fatal);
> +
> + socket = S390_TOPOLOGY_SOCKET(dev);
> + socket->socket_id = id;
> + book->cnt++;
> +
> + return socket;
> +}
> +
> +/*
> + * s390_get_cores:
> + * @socket: the socket to search into
> + * @origin: the origin specified for the S390TopologyCores
> + *
> + * returns a pointer to a S390TopologyCores structure within a socket having
> + * the specified origin.
> + * First search if the socket is already containing the S390TopologyCores
> + * structure and if not create one with this origin.
> + */
> +static S390TopologyCores *s390_get_cores(S390TopologySocket *socket, int origin)
> +{
> + S390TopologyCores *cores;
> + BusChild *kid;
> +
> + QTAILQ_FOREACH(kid, &socket->bus->children, sibling) {
> + cores = S390_TOPOLOGY_CORES(kid->child);
> + if (cores->origin == origin) {
> + return cores;
> + }
> + }
> + return s390_create_cores(socket, origin);
> +}
> +
> +/*
> + * s390_get_socket:
> + * @book: The book to search into
> + * @socket_id: the identifier of the socket to search for
> + *
> + * returns a pointer to a S390TopologySocket structure within a book having
> + * the specified socket_id.
> + * First search if the book is already containing the S390TopologySocket
> + * structure and if not create one with this socket_id.
> + */
> +static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
> + int socket_id)
> +{
> + S390TopologySocket *socket;
> + BusChild *kid;
> +
> + QTAILQ_FOREACH(kid, &book->bus->children, sibling) {
> + socket = S390_TOPOLOGY_SOCKET(kid->child);
> + if (socket->socket_id == socket_id) {
> + return socket;
> + }
> + }
> + return s390_create_socket(book, socket_id);
> +}
> +
> +/*
> + * s390_topology_new_cpu:
> + * @core_id: the core ID is machine wide
> + *
> + * We have a single book returned by s390_get_topology(),
> + * then we build the hierarchy on demand.
> + * Note that we do not destroy the hierarchy on error creating
> + * an entry in the topology, we just keep it empty.
> + * We do not need to worry about not finding a topology level
> + * entry this would have been caught during smp parsing.
> + */
> +void s390_topology_new_cpu(int core_id)
> +{
> + const MachineState *ms = MACHINE(qdev_get_machine());
> + S390TopologyBook *book;
> + S390TopologySocket *socket;
> + S390TopologyCores *cores;
> + int cores_per_socket, sock_idx;
> + int origin, bit;
> +
> + book = s390_get_topology();
> +
> + cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
> +
> + sock_idx = (core_id / cores_per_socket);
> + socket = s390_get_socket(book, sock_idx);
> +
> + /*
> + * At the core level, each CPU is represented by a bit in a 64bit
> + * unsigned long. Set on plug and clear on unplug of a CPU.
> + * The firmware assume that all CPU in the core description have the same
> + * type, polarization and are all dedicated or shared.
> + * In the case a socket contains CPU with different type, polarization
> + * or dedication then they will be defined in different CPU containers.
> + * Currently we assume all CPU are identical and the only reason to have
> + * several S390TopologyCores inside a socket is to have more than 64 CPUs
> + * in that case the origin field, representing the offset of the first CPU
> + * in the CPU container allows to represent up to the maximal number of
> + * CPU inside several CPU containers inside the socket container.
> + */
> + origin = 64 * (core_id / 64);
> +
> + cores = s390_get_cores(socket, origin);
> +
> + bit = 63 - (core_id - origin);
> + set_bit(bit, &cores->mask);
> + cores->origin = origin;
> +}
> +
> +/*
> + * Setting the first topology: 1 book, 1 socket
> + * This is enough for 64 cores if the topology is flat (single socket)
> + */
> +void s390_topology_setup(MachineState *ms)
> +{
> + DeviceState *dev;
> +
> + /* Create BOOK bridge device */
> + dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
> + object_property_add_child(qdev_get_machine(),
> + TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
> + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
> +}
> +
> +S390TopologyBook *s390_get_topology(void)
> +{
> + static S390TopologyBook *book;
> +
> + if (!book) {
> + book = S390_TOPOLOGY_BOOK(
> + object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
> + assert(book != NULL);
> + }
> +
> + return book;
> +}
> +
> +/* --- CORES Definitions --- */
> +
> +static Property s390_topology_cores_properties[] = {
> + DEFINE_PROP_BOOL("dedicated", S390TopologyCores, dedicated, false),
> + DEFINE_PROP_UINT8("polarity", S390TopologyCores, polarity,
> + S390_TOPOLOGY_POLARITY_H),
> + DEFINE_PROP_UINT8("cputype", S390TopologyCores, cputype,
> + S390_TOPOLOGY_CPU_TYPE),
> + DEFINE_PROP_UINT16("origin", S390TopologyCores, origin, 0),
> + DEFINE_PROP_UINT64("mask", S390TopologyCores, mask, 0),
> + DEFINE_PROP_UINT8("id", S390TopologyCores, id, 0),
> + DEFINE_PROP_END_OF_LIST(),
> +};
> +
> +static void cpu_cores_class_init(ObjectClass *oc, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(oc);
> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
> +
> + device_class_set_props(dc, s390_topology_cores_properties);
> + hc->unplug = qdev_simple_device_unplug_cb;
> + dc->bus_type = TYPE_S390_TOPOLOGY_SOCKET_BUS;
> + dc->desc = "topology cpu entry";
> +}
> +
> +static const TypeInfo cpu_cores_info = {
> + .name = TYPE_S390_TOPOLOGY_CORES,
> + .parent = TYPE_DEVICE,
> + .instance_size = sizeof(S390TopologyCores),
> + .class_init = cpu_cores_class_init,
> + .interfaces = (InterfaceInfo[]) {
> + { TYPE_HOTPLUG_HANDLER },
> + { }
> + }
> +};
> +
> +/* --- SOCKETS Definitions --- */
> +static Property s390_topology_socket_properties[] = {
> + DEFINE_PROP_UINT8("socket_id", S390TopologySocket, socket_id, 0),
> + DEFINE_PROP_END_OF_LIST(),
> +};
> +
> +static char *socket_bus_get_dev_path(DeviceState *dev)
> +{
> + S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
> + DeviceState *book = dev->parent_bus->parent;
> + char *id = qdev_get_dev_path(book);
> + char *ret;
> +
> + if (id) {
> + ret = g_strdup_printf("%s:%02d", id, socket->socket_id);
> + g_free(id);
> + } else {
> + ret = g_strdup_printf("_:%02d", socket->socket_id);
> + }
> +
> + return ret;
> +}
> +
> +static void socket_bus_class_init(ObjectClass *oc, void *data)
> +{
> + BusClass *k = BUS_CLASS(oc);
> +
> + k->get_dev_path = socket_bus_get_dev_path;
> + k->max_dev = S390_MAX_SOCKETS;
> +}
> +
> +static const TypeInfo socket_bus_info = {
> + .name = TYPE_S390_TOPOLOGY_SOCKET_BUS,
> + .parent = TYPE_BUS,
> + .instance_size = 0,
> + .class_init = socket_bus_class_init,
> +};
> +
> +static void s390_socket_device_realize(DeviceState *dev, Error **errp)
> +{
> + S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
> + BusState *bus;
> +
> + bus = qbus_new(TYPE_S390_TOPOLOGY_SOCKET_BUS, dev,
> + TYPE_S390_TOPOLOGY_SOCKET_BUS);
> + qbus_set_hotplug_handler(bus, OBJECT(dev));
> + socket->bus = bus;
> +}
> +
> +static void socket_class_init(ObjectClass *oc, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(oc);
> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
> +
> + hc->unplug = qdev_simple_device_unplug_cb;
> + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
> + dc->bus_type = TYPE_S390_TOPOLOGY_BOOK_BUS;
> + dc->realize = s390_socket_device_realize;
> + device_class_set_props(dc, s390_topology_socket_properties);
> + dc->desc = "topology socket";
> +}
> +
> +static const TypeInfo socket_info = {
> + .name = TYPE_S390_TOPOLOGY_SOCKET,
> + .parent = TYPE_DEVICE,
> + .instance_size = sizeof(S390TopologySocket),
> + .class_init = socket_class_init,
> + .interfaces = (InterfaceInfo[]) {
> + { TYPE_HOTPLUG_HANDLER },
> + { }
> + }
> +};
> +
> +static char *book_bus_get_dev_path(DeviceState *dev)
> +{
> + return g_strdup_printf("00");
If you just want to duplicate a static string, please g_strdup() instead.
> +}
> +
> +static void book_bus_class_init(ObjectClass *oc, void *data)
> +{
> + BusClass *k = BUS_CLASS(oc);
> +
> + k->get_dev_path = book_bus_get_dev_path;
> + k->max_dev = S390_MAX_BOOKS;
> +}
> +
> +static const TypeInfo book_bus_info = {
> + .name = TYPE_S390_TOPOLOGY_BOOK_BUS,
> + .parent = TYPE_BUS,
> + .instance_size = 0,
> + .class_init = book_bus_class_init,
> +};
> +
> +static void s390_book_device_realize(DeviceState *dev, Error **errp)
> +{
> + S390TopologyBook *book = S390_TOPOLOGY_BOOK(dev);
> + BusState *bus;
> +
> + bus = qbus_new(TYPE_S390_TOPOLOGY_BOOK_BUS, dev,
> + TYPE_S390_TOPOLOGY_BOOK_BUS);
> + qbus_set_hotplug_handler(bus, OBJECT(dev));
> + book->bus = bus;
> +}
> +
> +static void book_class_init(ObjectClass *oc, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(oc);
> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
> +
> + hc->unplug = qdev_simple_device_unplug_cb;
> + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
> + dc->realize = s390_book_device_realize;
> + dc->desc = "topology book";
> +}
> +
> +static const TypeInfo book_info = {
> + .name = TYPE_S390_TOPOLOGY_BOOK,
> + .parent = TYPE_SYS_BUS_DEVICE,
> + .instance_size = sizeof(S390TopologyBook),
> + .class_init = book_class_init,
> + .interfaces = (InterfaceInfo[]) {
> + { TYPE_HOTPLUG_HANDLER },
> + { }
> + }
> +};
> +
> +static void topology_register(void)
> +{
> + type_register_static(&cpu_cores_info);
> + type_register_static(&socket_bus_info);
> + type_register_static(&socket_info);
> + type_register_static(&book_bus_info);
> + type_register_static(&book_info);
> +}
> +
> +type_init(topology_register);
> diff --git a/hw/s390x/meson.build b/hw/s390x/meson.build
> index 28484256ec..74678861cf 100644
> --- a/hw/s390x/meson.build
> +++ b/hw/s390x/meson.build
> @@ -2,6 +2,7 @@ s390x_ss = ss.source_set()
> s390x_ss.add(files(
> 'ap-bridge.c',
> 'ap-device.c',
> + 'cpu-topology.c',
> 'ccw-device.c',
> 'css-bridge.c',
> 'css.c',
> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
> index 90480e7cf9..179846e3a3 100644
> --- a/hw/s390x/s390-virtio-ccw.c
> +++ b/hw/s390x/s390-virtio-ccw.c
> @@ -42,6 +42,7 @@
> #include "sysemu/sysemu.h"
> #include "hw/s390x/pv.h"
> #include "migration/blocker.h"
> +#include "hw/s390x/cpu-topology.h"
>
> static Error *pv_mig_blocker;
>
> @@ -88,6 +89,7 @@ static void s390_init_cpus(MachineState *machine)
> /* initialize possible_cpus */
> mc->possible_cpu_arch_ids(machine);
>
> + s390_topology_setup(machine);
> for (i = 0; i < machine->smp.cpus; i++) {
> s390x_new_cpu(machine->cpu_type, i, &error_fatal);
> }
> @@ -305,6 +307,8 @@ static void s390_cpu_plug(HotplugHandler *hotplug_dev,
> g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
> ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
>
> + s390_topology_new_cpu(cpu->env.core_id);
Why not pass the "ms" MachineState value to s390_topology_new_cpu() here, so
you don't have to look it up there again?
> if (dev->hotplugged) {
> raise_irq_cpu_hotplug();
> }
> diff --git a/include/hw/s390x/cpu-topology.h b/include/hw/s390x/cpu-topology.h
> new file mode 100644
> index 0000000000..e6e013a8b8
> --- /dev/null
> +++ b/include/hw/s390x/cpu-topology.h
> @@ -0,0 +1,74 @@
> +/*
> + * CPU Topology
> + *
> + * Copyright 2021 IBM Corp.
2022 now?
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or (at
> + * your option) any later version. See the COPYING file in the top-level
> + * directory.
> + */
> +#ifndef HW_S390X_CPU_TOPOLOGY_H
> +#define HW_S390X_CPU_TOPOLOGY_H
> +
> +#include "hw/qdev-core.h"
> +#include "qom/object.h"
> +
> +#define S390_TOPOLOGY_CPU_TYPE 0x03
> +
> +#define S390_TOPOLOGY_POLARITY_H 0x00
> +#define S390_TOPOLOGY_POLARITY_VL 0x01
> +#define S390_TOPOLOGY_POLARITY_VM 0x02
> +#define S390_TOPOLOGY_POLARITY_VH 0x03
> +
> +#define TYPE_S390_TOPOLOGY_CORES "topology cores"
> + /*
> + * Each CPU inside a socket will be represented by a bit in a 64bit
> + * unsigned long. Set on plug and clear on unplug of a CPU.
> + * All CPU inside a mask share the same dedicated, polarity and
> + * cputype values.
> + * The origin is the offset of the first CPU in a mask.
> + */
> +struct S390TopologyCores {
> + DeviceState parent_obj;
> + uint8_t id;
> + bool dedicated;
> + uint8_t polarity;
> + uint8_t cputype;
What's the benefit of using uint8_ts here? Why not simply an "int"?
> + uint16_t origin;
> + uint64_t mask;
> + int cnt;
> +};
> +typedef struct S390TopologyCores S390TopologyCores;
> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyCores, S390_TOPOLOGY_CORES)
> +
> +#define TYPE_S390_TOPOLOGY_SOCKET "topology socket"
> +#define TYPE_S390_TOPOLOGY_SOCKET_BUS "socket-bus"
> +struct S390TopologySocket {
> + DeviceState parent_obj;
> + BusState *bus;
> + uint8_t socket_id;
Again, why uint8_t ?
> + int cnt;
> +};
> +typedef struct S390TopologySocket S390TopologySocket;
> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
> +#define S390_MAX_SOCKETS 4
> +
> +#define TYPE_S390_TOPOLOGY_BOOK "topology book"
> +#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
> +struct S390TopologyBook {
> + SysBusDevice parent_obj;
> + BusState *bus;
> + uint8_t book_id;
dito
> + int cnt;
> +};
> +typedef struct S390TopologyBook S390TopologyBook;
> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
> +#define S390_MAX_BOOKS 1
> +
> +S390TopologyBook *s390_init_topology(void);
> +
> +S390TopologyBook *s390_get_topology(void);
> +void s390_topology_setup(MachineState *ms);
> +void s390_topology_new_cpu(int core_id);
> +
> +#endif
Thomas
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 03/13] s390x: topology: CPU topology objects and structures
2022-05-19 10:45 ` Thomas Huth
@ 2022-05-19 15:22 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-19 15:22 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 5/19/22 12:45, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> We use new objects to have a dynamic administration of the CPU topology.
>> The highest level object in this implementation is the s390 book and
>> in this first implementation of CPU topology for S390 we have a single
>> book.
>> The book is built as a SYSBUS bridge during the CPU initialization.
>> Other objects, sockets and core will be built after the parsing
>> of the QEMU -smp argument.
>>
>> Every object under this single book will be build dynamically
>> immediately after a CPU has be realized if it is needed.
>> The CPU will fill the sockets once after the other, according to the
>> number of core per socket defined during the smp parsing.
>>
>> Each CPU inside a socket will be represented by a bit in a 64bit
>> unsigned long. Set on plug and clear on unplug of a CPU.
>>
>> For the S390 CPU topology, thread and cores are merged into
>> topology cores and the number of topology cores is the multiplication
>> of cores by the numbers of threads.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
>> hw/s390x/cpu-topology.c | 361 ++++++++++++++++++++++++++++++++
>> hw/s390x/meson.build | 1 +
>> hw/s390x/s390-virtio-ccw.c | 4 +
>> include/hw/s390x/cpu-topology.h | 74 +++++++
>> target/s390x/cpu.h | 47 +++++
>> 5 files changed, 487 insertions(+)
>> create mode 100644 hw/s390x/cpu-topology.c
>> create mode 100644 include/hw/s390x/cpu-topology.h
>>
>> diff --git a/hw/s390x/cpu-topology.c b/hw/s390x/cpu-topology.c
>> new file mode 100644
>> index 0000000000..b7131b4ac3
>> --- /dev/null
>> +++ b/hw/s390x/cpu-topology.c
>> @@ -0,0 +1,361 @@
>> +/*
>> + * CPU Topology
>> + *
>> + * Copyright 2021 IBM Corp.
>
> 2022 now?
as time goes by...
>
>> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
>> +
>> + * This work is licensed under the terms of the GNU GPL, version 2 or
>> (at
>> + * your option) any later version. See the COPYING file in the top-level
>> + * directory.
>> + */
>> +
>> +#include "qemu/osdep.h"
>> +#include "qapi/error.h"
>> +#include "qemu/error-report.h"
>> +#include "hw/sysbus.h"
>> +#include "hw/s390x/cpu-topology.h"
>> +#include "hw/qdev-properties.h"
>> +#include "hw/boards.h"
>> +#include "qemu/typedefs.h"
>> +#include "target/s390x/cpu.h"
>> +#include "hw/s390x/s390-virtio-ccw.h"
>> +
>> +static S390TopologyCores *s390_create_cores(S390TopologySocket *socket,
>> + int origin)
>> +{
>> + DeviceState *dev;
>> + S390TopologyCores *cores;
>> + const MachineState *ms = MACHINE(qdev_get_machine());
>> +
>> + if (socket->bus->num_children >= (ms->smp.cores *
>> ms->smp.threads)) {
>
> You can drop the innermost parentheses.
OK
>
> Also, can this situation ever happen? If not, please turn it into an
> assert() instead.
> >> + return NULL;
>
> You return NULL here, but the callers don't check for NULL and use the
> pointer anyway. So either this should not return NULL or you have to
> check the value at the calling site.
It can happen, I must check the return value at the caller.
Thanks
>
>> + }
>> +
>> + dev = qdev_new(TYPE_S390_TOPOLOGY_CORES);
>> + qdev_realize_and_unref(dev, socket->bus, &error_fatal);
>> +
>> + cores = S390_TOPOLOGY_CORES(dev);
>> + cores->origin = origin;
>> + socket->cnt += 1;
>> +
>> + return cores;
>> +}
>> +
>> +static S390TopologySocket *s390_create_socket(S390TopologyBook *book,
>> int id)
>> +{
>> + DeviceState *dev;
>> + S390TopologySocket *socket;
>> + const MachineState *ms = MACHINE(qdev_get_machine());
>
> You already look up the MachineState pointer in s390_topology_new_cpu()
> ... so to optimize a little bit, you could pass it in as parameter here
> instead.
Yes, thanks
>
>> + if (book->bus->num_children >= ms->smp.sockets) {
>> + return NULL;
>
> Here again - the callers do not check for NULL pointer values, so this
> should either not return NULL or the callers need to be changed.
hum, should never happen so I will change this with an assert.
But searching the answer I found a beautiful bug in the caller.
>
>> + }
>> +
>> + dev = qdev_new(TYPE_S390_TOPOLOGY_SOCKET);
>> + qdev_realize_and_unref(dev, book->bus, &error_fatal);
>> +
>> + socket = S390_TOPOLOGY_SOCKET(dev);
>> + socket->socket_id = id;
>> + book->cnt++;
>> +
>> + return socket;
>> +}
>> +
>> +/*
>> + * s390_get_cores:
>> + * @socket: the socket to search into
>> + * @origin: the origin specified for the S390TopologyCores
>> + *
>> + * returns a pointer to a S390TopologyCores structure within a socket
>> having
>> + * the specified origin.
>> + * First search if the socket is already containing the
>> S390TopologyCores
>> + * structure and if not create one with this origin.
>> + */
>> +static S390TopologyCores *s390_get_cores(S390TopologySocket *socket,
>> int origin)
>> +{
>> + S390TopologyCores *cores;
>> + BusChild *kid;
>> +
>> + QTAILQ_FOREACH(kid, &socket->bus->children, sibling) {
>> + cores = S390_TOPOLOGY_CORES(kid->child);
>> + if (cores->origin == origin) {
>> + return cores;
>> + }
>> + }
>> + return s390_create_cores(socket, origin);
>> +}
>> +
>> +/*
>> + * s390_get_socket:
>> + * @book: The book to search into
>> + * @socket_id: the identifier of the socket to search for
>> + *
>> + * returns a pointer to a S390TopologySocket structure within a book
>> having
>> + * the specified socket_id.
>> + * First search if the book is already containing the S390TopologySocket
>> + * structure and if not create one with this socket_id.
>> + */
>> +static S390TopologySocket *s390_get_socket(S390TopologyBook *book,
>> + int socket_id)
>> +{
>> + S390TopologySocket *socket;
>> + BusChild *kid;
>> +
>> + QTAILQ_FOREACH(kid, &book->bus->children, sibling) {
>> + socket = S390_TOPOLOGY_SOCKET(kid->child);
>> + if (socket->socket_id == socket_id) {
>> + return socket;
>> + }
>> + }
>> + return s390_create_socket(book, socket_id);
>> +}
>> +
>> +/*
>> + * s390_topology_new_cpu:
>> + * @core_id: the core ID is machine wide
>> + *
>> + * We have a single book returned by s390_get_topology(),
>> + * then we build the hierarchy on demand.
>> + * Note that we do not destroy the hierarchy on error creating
>> + * an entry in the topology, we just keep it empty.
>> + * We do not need to worry about not finding a topology level
>> + * entry this would have been caught during smp parsing.
>> + */
>> +void s390_topology_new_cpu(int core_id)
>> +{
>> + const MachineState *ms = MACHINE(qdev_get_machine());
>> + S390TopologyBook *book;
>> + S390TopologySocket *socket;
>> + S390TopologyCores *cores;
>> + int cores_per_socket, sock_idx;
>> + int origin, bit;
>> +
>> + book = s390_get_topology();
>> +
>> + cores_per_socket = ms->smp.max_cpus / ms->smp.sockets;
>> +
>> + sock_idx = (core_id / cores_per_socket);
>> + socket = s390_get_socket(book, sock_idx);
>> +
>> + /*
>> + * At the core level, each CPU is represented by a bit in a 64bit
>> + * unsigned long. Set on plug and clear on unplug of a CPU.
>> + * The firmware assume that all CPU in the core description have
>> the same
>> + * type, polarization and are all dedicated or shared.
>> + * In the case a socket contains CPU with different type,
>> polarization
>> + * or dedication then they will be defined in different CPU
>> containers.
>> + * Currently we assume all CPU are identical and the only reason
>> to have
>> + * several S390TopologyCores inside a socket is to have more than
>> 64 CPUs
>> + * in that case the origin field, representing the offset of the
>> first CPU
>> + * in the CPU container allows to represent up to the maximal
>> number of
>> + * CPU inside several CPU containers inside the socket container.
>> + */
>> + origin = 64 * (core_id / 64);
>> +
>> + cores = s390_get_cores(socket, origin);
>> +
>> + bit = 63 - (core_id - origin);
>> + set_bit(bit, &cores->mask);
>> + cores->origin = origin;
>> +}
>> +
>> +/*
>> + * Setting the first topology: 1 book, 1 socket
>> + * This is enough for 64 cores if the topology is flat (single socket)
>> + */
>> +void s390_topology_setup(MachineState *ms)
>> +{
>> + DeviceState *dev;
>> +
>> + /* Create BOOK bridge device */
>> + dev = qdev_new(TYPE_S390_TOPOLOGY_BOOK);
>> + object_property_add_child(qdev_get_machine(),
>> + TYPE_S390_TOPOLOGY_BOOK, OBJECT(dev));
>> + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
>> +}
>> +
>> +S390TopologyBook *s390_get_topology(void)
>> +{
>> + static S390TopologyBook *book;
>> +
>> + if (!book) {
>> + book = S390_TOPOLOGY_BOOK(
>> + object_resolve_path(TYPE_S390_TOPOLOGY_BOOK, NULL));
>> + assert(book != NULL);
>> + }
>> +
>> + return book;
>> +}
>> +
>> +/* --- CORES Definitions --- */
>> +
>> +static Property s390_topology_cores_properties[] = {
>> + DEFINE_PROP_BOOL("dedicated", S390TopologyCores, dedicated, false),
>> + DEFINE_PROP_UINT8("polarity", S390TopologyCores, polarity,
>> + S390_TOPOLOGY_POLARITY_H),
>> + DEFINE_PROP_UINT8("cputype", S390TopologyCores, cputype,
>> + S390_TOPOLOGY_CPU_TYPE),
>> + DEFINE_PROP_UINT16("origin", S390TopologyCores, origin, 0),
>> + DEFINE_PROP_UINT64("mask", S390TopologyCores, mask, 0),
>> + DEFINE_PROP_UINT8("id", S390TopologyCores, id, 0),
>> + DEFINE_PROP_END_OF_LIST(),
>> +};
>> +
>> +static void cpu_cores_class_init(ObjectClass *oc, void *data)
>> +{
>> + DeviceClass *dc = DEVICE_CLASS(oc);
>> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
>> +
>> + device_class_set_props(dc, s390_topology_cores_properties);
>> + hc->unplug = qdev_simple_device_unplug_cb;
>> + dc->bus_type = TYPE_S390_TOPOLOGY_SOCKET_BUS;
>> + dc->desc = "topology cpu entry";
>> +}
>> +
>> +static const TypeInfo cpu_cores_info = {
>> + .name = TYPE_S390_TOPOLOGY_CORES,
>> + .parent = TYPE_DEVICE,
>> + .instance_size = sizeof(S390TopologyCores),
>> + .class_init = cpu_cores_class_init,
>> + .interfaces = (InterfaceInfo[]) {
>> + { TYPE_HOTPLUG_HANDLER },
>> + { }
>> + }
>> +};
>> +
>> +/* --- SOCKETS Definitions --- */
>> +static Property s390_topology_socket_properties[] = {
>> + DEFINE_PROP_UINT8("socket_id", S390TopologySocket, socket_id, 0),
>> + DEFINE_PROP_END_OF_LIST(),
>> +};
>> +
>> +static char *socket_bus_get_dev_path(DeviceState *dev)
>> +{
>> + S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
>> + DeviceState *book = dev->parent_bus->parent;
>> + char *id = qdev_get_dev_path(book);
>> + char *ret;
>> +
>> + if (id) {
>> + ret = g_strdup_printf("%s:%02d", id, socket->socket_id);
>> + g_free(id);
>> + } else {
>> + ret = g_strdup_printf("_:%02d", socket->socket_id);
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +static void socket_bus_class_init(ObjectClass *oc, void *data)
>> +{
>> + BusClass *k = BUS_CLASS(oc);
>> +
>> + k->get_dev_path = socket_bus_get_dev_path;
>> + k->max_dev = S390_MAX_SOCKETS;
>> +}
>> +
>> +static const TypeInfo socket_bus_info = {
>> + .name = TYPE_S390_TOPOLOGY_SOCKET_BUS,
>> + .parent = TYPE_BUS,
>> + .instance_size = 0,
>> + .class_init = socket_bus_class_init,
>> +};
>> +
>> +static void s390_socket_device_realize(DeviceState *dev, Error **errp)
>> +{
>> + S390TopologySocket *socket = S390_TOPOLOGY_SOCKET(dev);
>> + BusState *bus;
>> +
>> + bus = qbus_new(TYPE_S390_TOPOLOGY_SOCKET_BUS, dev,
>> + TYPE_S390_TOPOLOGY_SOCKET_BUS);
>> + qbus_set_hotplug_handler(bus, OBJECT(dev));
>> + socket->bus = bus;
>> +}
>> +
>> +static void socket_class_init(ObjectClass *oc, void *data)
>> +{
>> + DeviceClass *dc = DEVICE_CLASS(oc);
>> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
>> +
>> + hc->unplug = qdev_simple_device_unplug_cb;
>> + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
>> + dc->bus_type = TYPE_S390_TOPOLOGY_BOOK_BUS;
>> + dc->realize = s390_socket_device_realize;
>> + device_class_set_props(dc, s390_topology_socket_properties);
>> + dc->desc = "topology socket";
>> +}
>> +
>> +static const TypeInfo socket_info = {
>> + .name = TYPE_S390_TOPOLOGY_SOCKET,
>> + .parent = TYPE_DEVICE,
>> + .instance_size = sizeof(S390TopologySocket),
>> + .class_init = socket_class_init,
>> + .interfaces = (InterfaceInfo[]) {
>> + { TYPE_HOTPLUG_HANDLER },
>> + { }
>> + }
>> +};
>> +
>> +static char *book_bus_get_dev_path(DeviceState *dev)
>> +{
>> + return g_strdup_printf("00");
>
> If you just want to duplicate a static string, please g_strdup() instead.
OK, thanks.
>
>> +}
>> +
>> +static void book_bus_class_init(ObjectClass *oc, void *data)
>> +{
>> + BusClass *k = BUS_CLASS(oc);
>> +
>> + k->get_dev_path = book_bus_get_dev_path;
>> + k->max_dev = S390_MAX_BOOKS;
>> +}
>> +
>> +static const TypeInfo book_bus_info = {
>> + .name = TYPE_S390_TOPOLOGY_BOOK_BUS,
>> + .parent = TYPE_BUS,
>> + .instance_size = 0,
>> + .class_init = book_bus_class_init,
>> +};
>> +
>> +static void s390_book_device_realize(DeviceState *dev, Error **errp)
>> +{
>> + S390TopologyBook *book = S390_TOPOLOGY_BOOK(dev);
>> + BusState *bus;
>> +
>> + bus = qbus_new(TYPE_S390_TOPOLOGY_BOOK_BUS, dev,
>> + TYPE_S390_TOPOLOGY_BOOK_BUS);
>> + qbus_set_hotplug_handler(bus, OBJECT(dev));
>> + book->bus = bus;
>> +}
>> +
>> +static void book_class_init(ObjectClass *oc, void *data)
>> +{
>> + DeviceClass *dc = DEVICE_CLASS(oc);
>> + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
>> +
>> + hc->unplug = qdev_simple_device_unplug_cb;
>> + set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
>> + dc->realize = s390_book_device_realize;
>> + dc->desc = "topology book";
>> +}
>> +
>> +static const TypeInfo book_info = {
>> + .name = TYPE_S390_TOPOLOGY_BOOK,
>> + .parent = TYPE_SYS_BUS_DEVICE,
>> + .instance_size = sizeof(S390TopologyBook),
>> + .class_init = book_class_init,
>> + .interfaces = (InterfaceInfo[]) {
>> + { TYPE_HOTPLUG_HANDLER },
>> + { }
>> + }
>> +};
>> +
>> +static void topology_register(void)
>> +{
>> + type_register_static(&cpu_cores_info);
>> + type_register_static(&socket_bus_info);
>> + type_register_static(&socket_info);
>> + type_register_static(&book_bus_info);
>> + type_register_static(&book_info);
>> +}
>> +
>> +type_init(topology_register);
>> diff --git a/hw/s390x/meson.build b/hw/s390x/meson.build
>> index 28484256ec..74678861cf 100644
>> --- a/hw/s390x/meson.build
>> +++ b/hw/s390x/meson.build
>> @@ -2,6 +2,7 @@ s390x_ss = ss.source_set()
>> s390x_ss.add(files(
>> 'ap-bridge.c',
>> 'ap-device.c',
>> + 'cpu-topology.c',
>> 'ccw-device.c',
>> 'css-bridge.c',
>> 'css.c',
>> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
>> index 90480e7cf9..179846e3a3 100644
>> --- a/hw/s390x/s390-virtio-ccw.c
>> +++ b/hw/s390x/s390-virtio-ccw.c
>> @@ -42,6 +42,7 @@
>> #include "sysemu/sysemu.h"
>> #include "hw/s390x/pv.h"
>> #include "migration/blocker.h"
>> +#include "hw/s390x/cpu-topology.h"
>> static Error *pv_mig_blocker;
>> @@ -88,6 +89,7 @@ static void s390_init_cpus(MachineState *machine)
>> /* initialize possible_cpus */
>> mc->possible_cpu_arch_ids(machine);
>> + s390_topology_setup(machine);
>> for (i = 0; i < machine->smp.cpus; i++) {
>> s390x_new_cpu(machine->cpu_type, i, &error_fatal);
>> }
>> @@ -305,6 +307,8 @@ static void s390_cpu_plug(HotplugHandler
>> *hotplug_dev,
>> g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
>> ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
>> + s390_topology_new_cpu(cpu->env.core_id);
>
> Why not pass the "ms" MachineState value to s390_topology_new_cpu()
> here, so you don't have to look it up there again?
Yes, will do.
>
>> if (dev->hotplugged) {
>> raise_irq_cpu_hotplug();
>> }
>> diff --git a/include/hw/s390x/cpu-topology.h
>> b/include/hw/s390x/cpu-topology.h
>> new file mode 100644
>> index 0000000000..e6e013a8b8
>> --- /dev/null
>> +++ b/include/hw/s390x/cpu-topology.h
>> @@ -0,0 +1,74 @@
>> +/*
>> + * CPU Topology
>> + *
>> + * Copyright 2021 IBM Corp.
>
> 2022 now?
We are not getting younger....
>
>> + *
>> + * This work is licensed under the terms of the GNU GPL, version 2 or
>> (at
>> + * your option) any later version. See the COPYING file in the top-level
>> + * directory.
>> + */
>> +#ifndef HW_S390X_CPU_TOPOLOGY_H
>> +#define HW_S390X_CPU_TOPOLOGY_H
>> +
>> +#include "hw/qdev-core.h"
>> +#include "qom/object.h"
>> +
>> +#define S390_TOPOLOGY_CPU_TYPE 0x03
>> +
>> +#define S390_TOPOLOGY_POLARITY_H 0x00
>> +#define S390_TOPOLOGY_POLARITY_VL 0x01
>> +#define S390_TOPOLOGY_POLARITY_VM 0x02
>> +#define S390_TOPOLOGY_POLARITY_VH 0x03
>> +
>> +#define TYPE_S390_TOPOLOGY_CORES "topology cores"
>> + /*
>> + * Each CPU inside a socket will be represented by a bit in a 64bit
>> + * unsigned long. Set on plug and clear on unplug of a CPU.
>> + * All CPU inside a mask share the same dedicated, polarity and
>> + * cputype values.
>> + * The origin is the offset of the first CPU in a mask.
>> + */
>> +struct S390TopologyCores {
>> + DeviceState parent_obj;
>> + uint8_t id;
>> + bool dedicated;
>> + uint8_t polarity;
>> + uint8_t cputype;
>
> What's the benefit of using uint8_ts here? Why not simply an "int"?
none, int is OK
>
>> + uint16_t origin;
>> + uint64_t mask;
>> + int cnt;
>> +};
>> +typedef struct S390TopologyCores S390TopologyCores;
>> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyCores, S390_TOPOLOGY_CORES)
>> +
>> +#define TYPE_S390_TOPOLOGY_SOCKET "topology socket"
>> +#define TYPE_S390_TOPOLOGY_SOCKET_BUS "socket-bus"
>> +struct S390TopologySocket {
>> + DeviceState parent_obj;
>> + BusState *bus;
>> + uint8_t socket_id;
>
> Again, why uint8_t ?
OK
>
>> + int cnt;
>> +};
>> +typedef struct S390TopologySocket S390TopologySocket;
>> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologySocket, S390_TOPOLOGY_SOCKET)
>> +#define S390_MAX_SOCKETS 4
>> +
>> +#define TYPE_S390_TOPOLOGY_BOOK "topology book"
>> +#define TYPE_S390_TOPOLOGY_BOOK_BUS "book-bus"
>> +struct S390TopologyBook {
>> + SysBusDevice parent_obj;
>> + BusState *bus;
>> + uint8_t book_id;
>
> dito
yes, right
>
>> + int cnt;
>> +};
>> +typedef struct S390TopologyBook S390TopologyBook;
>> +OBJECT_DECLARE_SIMPLE_TYPE(S390TopologyBook, S390_TOPOLOGY_BOOK)
>> +#define S390_MAX_BOOKS 1
>> +
>> +S390TopologyBook *s390_init_topology(void);
>> +
>> +S390TopologyBook *s390_get_topology(void);
>> +void s390_topology_setup(MachineState *ms);
>> +void s390_topology_new_cpu(int core_id);
>> +
>> +#endif
>
> Thomas
>
Thanks Thomas for the review,
Regards,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-24 10:59 ` Thomas Huth
2022-05-25 8:16 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 10:59 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> The handling of STSI is enhanced with the interception of the
> function code 15 for storing CPU topology.
>
> Using the objects built during the pluging of CPU, we build the
s/pluging/plugging/
> SYSIB 15_1_x structures.
>
> With this patch the maximum MNEST level is 2, this is also
> the only level allowed and only SYSIB 15_1_2 will be built.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
...
> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
> index f6969b76c5..a617c943ff 100644
> --- a/target/s390x/cpu.h
> +++ b/target/s390x/cpu.h
> @@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
>
> #include "exec/cpu-all.h"
>
> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
> #endif
Please keep an empty line before the #endif
> diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
> new file mode 100644
> index 0000000000..7f6db18829
> --- /dev/null
> +++ b/target/s390x/cpu_topology.c
> @@ -0,0 +1,112 @@
> +/*
> + * QEMU S390x CPU Topology
> + *
> + * Copyright IBM Corp. 2021
2022 ?
> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or (at
> + * your option) any later version. See the COPYING file in the top-level
> + * directory.
> + */
...
> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
> +{
> + const MachineState *machine = MACHINE(qdev_get_machine());
> + void *p;
> + int ret, cc;
> +
> + /*
> + * Until the SCLP STSI Facility reporting the MNEST value is used,
> + * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
> + */
> + if (sel2 != 2) {
> + setcc(cpu, 3);
> + return;
> + }
> +
> + p = g_malloc0(TARGET_PAGE_SIZE);
> +
> + setup_stsi(machine, p, 2);
> +
> + if (s390_is_pv()) {
> + ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
> + } else {
> + ret = s390_cpu_virt_mem_write(cpu, addr, ar, p, TARGET_PAGE_SIZE);
> + }
> + cc = ret ? 3 : 0;
> + setcc(cpu, cc);
Just a matter of taste (i.e. keep it if you like) - but you could scratch
the cc variable in this function by just doing:
setcc(cpu, ret ? 3 : 0);
> + g_free(p);
> +}
> +
Thomas
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 06/13] s390x: topology: Adding books to STSI
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-24 11:07 ` Thomas Huth
2022-05-25 8:17 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 11:07 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> Let's add STSI support for the container level 3, books,
> and provide the information back to the guest.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
...
> +static char *drawer_bus_get_dev_path(DeviceState *dev)
> +{
> + S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
> + DeviceState *node = dev->parent_bus->parent;
> + char *id = qdev_get_dev_path(node);
> + char *ret;
> +
> + if (id) {
> + ret = g_strdup_printf("%s:%02d", id, drawer->drawer_id);
> + g_free(id);
> + } else {
> + ret = g_malloc(6);
> + snprintf(ret, 6, "_:%02d", drawer->drawer_id);
Please use g_strdup_printf() here as well.
Thomas
> + }
> +
> + return ret;
> +}
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
2022-04-20 11:57 ` Pierre Morel
(?)
(?)
@ 2022-05-24 11:08 ` Thomas Huth
2022-05-25 8:18 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 11:08 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> The handling of STSI is enhanced with the interception of the
> function code 15 for storing CPU topology.
>
> Using the objects built during the pluging of CPU, we build the
s/pluging/plugging/
> SYSIB 15_1_x structures.
>
> With this patch the maximum MNEST level is 2, this is also
> the only level allowed and only SYSIB 15_1_2 will be built.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
...
> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
> index f6969b76c5..a617c943ff 100644
> --- a/target/s390x/cpu.h
> +++ b/target/s390x/cpu.h
> @@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
>
> #include "exec/cpu-all.h"
>
> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
> #endif
Please keep an empty line before the #endif
> diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
> new file mode 100644
> index 0000000000..7f6db18829
> --- /dev/null
> +++ b/target/s390x/cpu_topology.c
> @@ -0,0 +1,112 @@
> +/*
> + * QEMU S390x CPU Topology
> + *
> + * Copyright IBM Corp. 2021
2022 ?
> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or (at
> + * your option) any later version. See the COPYING file in the top-level
> + * directory.
> + */
...
> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
> +{
> + const MachineState *machine = MACHINE(qdev_get_machine());
> + void *p;
> + int ret, cc;
> +
> + /*
> + * Until the SCLP STSI Facility reporting the MNEST value is used,
> + * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
> + */
> + if (sel2 != 2) {
> + setcc(cpu, 3);
> + return;
> + }
> +
> + p = g_malloc0(TARGET_PAGE_SIZE);
> +
> + setup_stsi(machine, p, 2);
> +
> + if (s390_is_pv()) {
> + ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
> + } else {
> + ret = s390_cpu_virt_mem_write(cpu, addr, ar, p, TARGET_PAGE_SIZE);
> + }
> + cc = ret ? 3 : 0;
> + setcc(cpu, cc);
Just a matter of taste (i.e. keep it if you like) - but you could scratch
the cc variable in this function by just doing:
setcc(cpu, ret ? 3 : 0);
> + g_free(p);
> +}
> +
Thomas
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 08/13] s390x: topology: Adding drawers to STSI
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-24 11:10 ` Thomas Huth
2022-05-25 8:19 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 11:10 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> Let's add STSI support for the container level 4, drawers,
> and provide the information back to the guest.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
...
> @@ -470,6 +520,69 @@ static const TypeInfo drawer_info = {
> { }
> }
> };
> +
> +/* --- NODE Definitions --- */
> +
> +/*
> + * Nodes are the first level of CPU topology we support
> + * only one NODE for the moment.
> + */
> +static char *node_bus_get_dev_path(DeviceState *dev)
> +{
> + return g_strdup_printf("00");
> +}
g_strdup("00") please.
Thomas
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 10/13] s390x: kvm: topology: interception of PTF instruction
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-24 11:27 ` Thomas Huth
2022-05-25 8:22 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 11:27 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, eblake, armbru,
seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> When the host supports the CPU topology facility, the PTF
> instruction with function code 2 is interpreted by the SIE,
> provided that the userland hypervizor activates the interpretation
> by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
>
> The PTF instructions with function code 0 and 1 are intercepted
> and must be emulated by the userland hypervizor.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
> hw/s390x/s390-virtio-ccw.c | 50 ++++++++++++++++++++++++++++++
> include/hw/s390x/s390-virtio-ccw.h | 6 ++++
> target/s390x/kvm/kvm.c | 14 +++++++++
> 3 files changed, 70 insertions(+)
>
> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
> index 93d1a43583..1ffaddebcc 100644
> --- a/hw/s390x/s390-virtio-ccw.c
> +++ b/hw/s390x/s390-virtio-ccw.c
Why do you put this into s390-virtio-ccw.c and not into cpu_topology.c ?
> @@ -434,6 +434,56 @@ static void s390_pv_prepare_reset(S390CcwMachineState *ms)
> s390_pv_prep_reset();
> }
>
> +/*
> + * s390_handle_ptf:
> + *
> + * @register 1: contains the function code
> + *
> + * Function codes 0 and 1 handle the CPU polarization.
> + * We assume an horizontal topology, the only one supported currently
> + * by Linux, consequently we answer to function code 0, requesting
> + * horizontal polarization that it is already the current polarization
> + * and reject vertical polarization request without further explanation.
> + *
> + * Function code 2 is handling topology changes and is interpreted
> + * by the SIE.
> + */
> +int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra)
> +{
> + CPUS390XState *env = &cpu->env;
> + uint64_t reg = env->regs[r1];
> + uint8_t fc = reg & S390_TOPO_FC_MASK;
> +
> + if (!s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
> + s390_program_interrupt(env, PGM_OPERATION, ra);
> + return 0;
> + }
> +
> + if (env->psw.mask & PSW_MASK_PSTATE) {
> + s390_program_interrupt(env, PGM_PRIVILEGED, ra);
> + return 0;
> + }
> +
> + if (reg & ~S390_TOPO_FC_MASK) {
> + s390_program_interrupt(env, PGM_SPECIFICATION, ra);
> + return 0;
> + }
> +
> + switch (fc) {
> + case 0: /* Horizontal polarization is already set */
> + env->regs[r1] |= S390_PTF_REASON_DONE;
> + return 2;
> + case 1: /* Vertical polarization is not supported */
> + env->regs[r1] |= S390_PTF_REASON_NONE;
> + return 2;
> + default:
> + /* Note that fc == 2 is interpreted by the SIE */
> + s390_program_interrupt(env, PGM_SPECIFICATION, ra);
> + }
> +
> + return 0;
> +}
> +
> static void s390_machine_reset(MachineState *machine)
> {
> S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
> diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h
> index 3331990e02..ac4b4a92e7 100644
> --- a/include/hw/s390x/s390-virtio-ccw.h
> +++ b/include/hw/s390x/s390-virtio-ccw.h
> @@ -30,6 +30,12 @@ struct S390CcwMachineState {
> uint8_t loadparm[8];
> };
>
> +#define S390_PTF_REASON_NONE (0x00 << 8)
> +#define S390_PTF_REASON_DONE (0x01 << 8)
> +#define S390_PTF_REASON_BUSY (0x02 << 8)
> +#define S390_TOPO_FC_MASK 0xffUL
> +int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra);
> +
> struct S390CcwMachineClass {
> /*< private >*/
> MachineClass parent_class;
> diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
> index 27b3fbfa09..e3792e52c2 100644
> --- a/target/s390x/kvm/kvm.c
> +++ b/target/s390x/kvm/kvm.c
> @@ -98,6 +98,7 @@
>
> #define PRIV_B9_EQBS 0x9c
> #define PRIV_B9_CLP 0xa0
> +#define PRIV_B9_PTF 0xa2
> #define PRIV_B9_PCISTG 0xd0
> #define PRIV_B9_PCILG 0xd2
> #define PRIV_B9_RPCIT 0xd3
> @@ -1453,6 +1454,16 @@ static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
> }
> }
>
> +static int kvm_handle_ptf(S390CPU *cpu, struct kvm_run *run)
> +{
> + uint8_t r1 = (run->s390_sieic.ipb >> 20) & 0x0f;
> + int ret;
> +
> + ret = s390_handle_ptf(cpu, r1, RA_IGNORED);
> + setcc(cpu, ret);
So you're still setting the CC in case the s390_handle_ptf() function
injected a program interrupt? ... feels wrong. Maybe the CC should be set
within s390_handle_ptf() instead?
Thomas
> + return 0;
> +}
> +
> static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
> {
> int r = 0;
> @@ -1470,6 +1481,9 @@ static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
> case PRIV_B9_RPCIT:
> r = kvm_rpcit_service_call(cpu, run);
> break;
> + case PRIV_B9_PTF:
> + r = kvm_handle_ptf(cpu, run);
> + break;
> case PRIV_B9_EQBS:
> /* just inject exception */
> r = -1;
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 12/13] s390x: CPU topology: CPU topology migration
2022-04-20 11:57 ` Pierre Morel
(?)
@ 2022-05-24 11:32 ` Thomas Huth
2022-05-25 8:23 ` Pierre Morel
-1 siblings, 1 reply; 42+ messages in thread
From: Thomas Huth @ 2022-05-24 11:32 UTC (permalink / raw)
To: Pierre Morel, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, eblake, armbru,
seiden, nrb, frankja
On 20/04/2022 13.57, Pierre Morel wrote:
> To migrate the Multiple Topology Change report, MTCR, we
> get it from KVM and save its state in the topology VM State
> Description during the presave and restore it to KVM on the
> destination during the postload.
>
> The migration state is needed whenever the CPU topology
> feature is activated.
>
> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> ---
...
> @@ -2592,22 +2594,57 @@ static void kvm_s390_set_mtr(uint64_t attr)
> .group = KVM_S390_VM_CPU_TOPOLOGY,
> .attr = attr,
> };
> + int ret;
>
> - int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
> -
> + ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
Nit: Unnecessary code churn.
Thomas
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
2022-05-24 10:59 ` Thomas Huth
@ 2022-05-25 8:16 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:16 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 5/24/22 12:59, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> The handling of STSI is enhanced with the interception of the
>> function code 15 for storing CPU topology.
>>
>> Using the objects built during the pluging of CPU, we build the
>
> s/pluging/plugging/
>
>> SYSIB 15_1_x structures.
>>
>> With this patch the maximum MNEST level is 2, this is also
>> the only level allowed and only SYSIB 15_1_2 will be built.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
> ...
>> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
>> index f6969b76c5..a617c943ff 100644
>> --- a/target/s390x/cpu.h
>> +++ b/target/s390x/cpu.h
>> @@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
>> #include "exec/cpu-all.h"
>> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
>> #endif
>
> Please keep an empty line before the #endif
OK
>
>> diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
>> new file mode 100644
>> index 0000000000..7f6db18829
>> --- /dev/null
>> +++ b/target/s390x/cpu_topology.c
>> @@ -0,0 +1,112 @@
>> +/*
>> + * QEMU S390x CPU Topology
>> + *
>> + * Copyright IBM Corp. 2021
>
> 2022 ?
:) yes
>
>> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
>> + *
>> + * This work is licensed under the terms of the GNU GPL, version 2 or
>> (at
>> + * your option) any later version. See the COPYING file in the top-level
>> + * directory.
>> + */
> ...
>> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
>> +{
>> + const MachineState *machine = MACHINE(qdev_get_machine());
>> + void *p;
>> + int ret, cc;
>> +
>> + /*
>> + * Until the SCLP STSI Facility reporting the MNEST value is used,
>> + * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
>> + */
>> + if (sel2 != 2) {
>> + setcc(cpu, 3);
>> + return;
>> + }
>> +
>> + p = g_malloc0(TARGET_PAGE_SIZE);
>> +
>> + setup_stsi(machine, p, 2);
>> +
>> + if (s390_is_pv()) {
>> + ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
>> + } else {
>> + ret = s390_cpu_virt_mem_write(cpu, addr, ar, p,
>> TARGET_PAGE_SIZE);
>> + }
>> + cc = ret ? 3 : 0;
>> + setcc(cpu, cc);
>
> Just a matter of taste (i.e. keep it if you like) - but you could
> scratch the cc variable in this function by just doing:
>
> setcc(cpu, ret ? 3 : 0);
>
OK I can do this.
Thanks
Pierre
>> + g_free(p);
>> +}
>> +
>
> Thomas
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 06/13] s390x: topology: Adding books to STSI
2022-05-24 11:07 ` Thomas Huth
@ 2022-05-25 8:17 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:17 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 5/24/22 13:07, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> Let's add STSI support for the container level 3, books,
>> and provide the information back to the guest.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
> ...
>> +static char *drawer_bus_get_dev_path(DeviceState *dev)
>> +{
>> + S390TopologyDrawer *drawer = S390_TOPOLOGY_DRAWER(dev);
>> + DeviceState *node = dev->parent_bus->parent;
>> + char *id = qdev_get_dev_path(node);
>> + char *ret;
>> +
>> + if (id) {
>> + ret = g_strdup_printf("%s:%02d", id, drawer->drawer_id);
>> + g_free(id);
>> + } else {
>> + ret = g_malloc(6);
>> + snprintf(ret, 6, "_:%02d", drawer->drawer_id);
>
> Please use g_strdup_printf() here as well.
yes,
Thanks
pierre
>
> Thomas
>
>> + }
>> +
>> + return ret;
>> +}
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information
2022-05-24 11:08 ` Thomas Huth
@ 2022-05-25 8:18 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:18 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 5/24/22 13:08, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> The handling of STSI is enhanced with the interception of the
>> function code 15 for storing CPU topology.
>>
>> Using the objects built during the pluging of CPU, we build the
>
> s/pluging/plugging/
>
Yes
>> SYSIB 15_1_x structures.
>>
>> With this patch the maximum MNEST level is 2, this is also
>> the only level allowed and only SYSIB 15_1_2 will be built.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
> ...
>> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h
>> index f6969b76c5..a617c943ff 100644
>> --- a/target/s390x/cpu.h
>> +++ b/target/s390x/cpu.h
>> @@ -889,4 +889,5 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
>> #include "exec/cpu-all.h"
>> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar);
>> #endif
>
> Please keep an empty line before the #endif
OK
>
>> diff --git a/target/s390x/cpu_topology.c b/target/s390x/cpu_topology.c
>> new file mode 100644
>> index 0000000000..7f6db18829
>> --- /dev/null
>> +++ b/target/s390x/cpu_topology.c
>> @@ -0,0 +1,112 @@
>> +/*
>> + * QEMU S390x CPU Topology
>> + *
>> + * Copyright IBM Corp. 2021
>
> 2022 ?
Yes too
>
>> + * Author(s): Pierre Morel <pmorel@linux.ibm.com>
>> + *
>> + * This work is licensed under the terms of the GNU GPL, version 2 or
>> (at
>> + * your option) any later version. See the COPYING file in the top-level
>> + * directory.
>> + */
> ...
>> +void insert_stsi_15_1_x(S390CPU *cpu, int sel2, __u64 addr, uint8_t ar)
>> +{
>> + const MachineState *machine = MACHINE(qdev_get_machine());
>> + void *p;
>> + int ret, cc;
>> +
>> + /*
>> + * Until the SCLP STSI Facility reporting the MNEST value is used,
>> + * a sel2 value of 2 is the only value allowed in STSI 15.1.x.
>> + */
>> + if (sel2 != 2) {
>> + setcc(cpu, 3);
>> + return;
>> + }
>> +
>> + p = g_malloc0(TARGET_PAGE_SIZE);
>> +
>> + setup_stsi(machine, p, 2);
>> +
>> + if (s390_is_pv()) {
>> + ret = s390_cpu_pv_mem_write(cpu, 0, p, TARGET_PAGE_SIZE);
>> + } else {
>> + ret = s390_cpu_virt_mem_write(cpu, addr, ar, p,
>> TARGET_PAGE_SIZE);
>> + }
>> + cc = ret ? 3 : 0;
>> + setcc(cpu, cc);
>
> Just a matter of taste (i.e. keep it if you like) - but you could
> scratch the cc variable in this function by just doing:
>
> setcc(cpu, ret ? 3 : 0);
>
OK, I will changes all occurences
Thanks,
Pierre
>> + g_free(p);
>> +}
>> +
>
> Thomas
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 08/13] s390x: topology: Adding drawers to STSI
2022-05-24 11:10 ` Thomas Huth
@ 2022-05-25 8:19 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:19 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, philmd, eblake,
armbru, seiden, nrb, frankja
On 5/24/22 13:10, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> Let's add STSI support for the container level 4, drawers,
>> and provide the information back to the guest.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
> ...
>> @@ -470,6 +520,69 @@ static const TypeInfo drawer_info = {
>> { }
>> }
>> };
>> +
>> +/* --- NODE Definitions --- */
>> +
>> +/*
>> + * Nodes are the first level of CPU topology we support
>> + * only one NODE for the moment.
>> + */
>> +static char *node_bus_get_dev_path(DeviceState *dev)
>> +{
>> + return g_strdup_printf("00");
>> +}
> g_strdup("00") please.
Yes, thanks, will change it
Regards,
Pierre
>
> Thomas
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 10/13] s390x: kvm: topology: interception of PTF instruction
2022-05-24 11:27 ` Thomas Huth
@ 2022-05-25 8:22 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:22 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, eblake, armbru,
seiden, nrb, frankja
On 5/24/22 13:27, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> When the host supports the CPU topology facility, the PTF
>> instruction with function code 2 is interpreted by the SIE,
>> provided that the userland hypervizor activates the interpretation
>> by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
>>
>> The PTF instructions with function code 0 and 1 are intercepted
>> and must be emulated by the userland hypervizor.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
>> hw/s390x/s390-virtio-ccw.c | 50 ++++++++++++++++++++++++++++++
>> include/hw/s390x/s390-virtio-ccw.h | 6 ++++
>> target/s390x/kvm/kvm.c | 14 +++++++++
>> 3 files changed, 70 insertions(+)
>>
>> diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
>> index 93d1a43583..1ffaddebcc 100644
>> --- a/hw/s390x/s390-virtio-ccw.c
>> +++ b/hw/s390x/s390-virtio-ccw.c
>
> Why do you put this into s390-virtio-ccw.c and not into cpu_topology.c ?
Should have historical reason I forgot in between.
I will move it in cpu_topology.c
>
>> @@ -434,6 +434,56 @@ static void
>> s390_pv_prepare_reset(S390CcwMachineState *ms)
>> s390_pv_prep_reset();
>> }
>> +/*
>> + * s390_handle_ptf:
>> + *
>> + * @register 1: contains the function code
>> + *
>> + * Function codes 0 and 1 handle the CPU polarization.
>> + * We assume an horizontal topology, the only one supported currently
>> + * by Linux, consequently we answer to function code 0, requesting
>> + * horizontal polarization that it is already the current polarization
>> + * and reject vertical polarization request without further explanation.
>> + *
>> + * Function code 2 is handling topology changes and is interpreted
>> + * by the SIE.
>> + */
>> +int s390_has390_handle_ptfndle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra)
>> +{
>> + CPUS390XState *env = &cpu->env;
>> + uint64_t reg = env->regs[r1];
>> + uint8_t fc = reg & S390_TOPO_FC_MASK;
>> +
>> + if (!s390_has_feat(S390_FEAT_CONFIGURATION_TOPOLOGY)) {
>> + s390_program_interrupt(env, PGM_OPERATION, ra);
>> + return 0;
>> + }
>> +
>> + if (env->psw.mask & PSW_MASK_PSTATE) {
>> + s390_program_interrupt(env, PGM_PRIVILEGED, ra);
>> + return 0;
>> + }
>> +
>> + if (reg & ~S390_TOPO_FC_MASK) {
>> + s390_program_interrupt(env, PGM_SPECIFICATION, ra);
>> + return 0;
>> + }
>> +
>> + switch (fc) {
>> + case 0: /* Horizontal polarization is already set */
>> + env->regs[r1] |= S390_PTF_REASON_DONE;
>> + return 2;
>> + case 1: /* Vertical polarization is not supported */
>> + env->regs[r1] |= S390_PTF_REASON_NONE;
>> + return 2;
>> + default:
>> + /* Note that fc == 2 is interpreted by the SIE */
>> + s390_program_interrupt(env, PGM_SPECIFICATION, ra);
>> + }
>> +
>> + return 0;
>> +}
>> +
>> static void s390_machine_reset(MachineState *machine)
>> {
>> S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
>> diff --git a/include/hw/s390x/s390-virtio-ccw.h
>> b/include/hw/s390x/s390-virtio-ccw.h
>> index 3331990e02..ac4b4a92e7 100644
>> --- a/include/hw/s390x/s390-virtio-ccw.h
>> +++ b/include/hw/s390x/s390-virtio-ccw.h
>> @@ -30,6 +30,12 @@ struct S390CcwMachineState {
>> uint8_t loadparm[8];
>> };
>> +#define S390_PTF_REASON_NONE (0x00 << 8)
>> +#define S390_PTF_REASON_DONE (0x01 << 8)
>> +#define S390_PTF_REASON_BUSY (0x02 << 8)
>> +#define S390_TOPO_FC_MASK 0xffUL
>> +int s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra);
>> +
>> struct S390CcwMachineClass {
>> /*< private >*/
>> MachineClass parent_class;
>> diff --git a/target/s390x/kvm/kvm.c b/target/s390x/kvm/kvm.c
>> index 27b3fbfa09..e3792e52c2 100644
>> --- a/target/s390x/kvm/kvm.c
>> +++ b/target/s390x/kvm/kvm.c
>> @@ -98,6 +98,7 @@
>> #define PRIV_B9_EQBS 0x9c
>> #define PRIV_B9_CLP 0xa0
>> +#define PRIV_B9_PTF 0xa2
>> #define PRIV_B9_PCISTG 0xd0
>> #define PRIV_B9_PCILG 0xd2
>> #define PRIV_B9_RPCIT 0xd3
>> @@ -1453,6 +1454,16 @@ static int kvm_mpcifc_service_call(S390CPU
>> *cpu, struct kvm_run *run)
>> }
>> }
>> +static int kvm_handle_ptf(S390CPU *cpu, struct kvm_run *run)
>> +{
>> + uint8_t r1 = (run->s390_sieic.ipb >> 20) & 0x0f;
>> + int ret;
>> +
>> + ret = s390_handle_ptf(cpu, r1, RA_IGNORED);
>> + setcc(cpu, ret);
>
> So you're still setting the CC in case the s390_handle_ptf() function
> injected a program interrupt? ... feels wrong. Maybe the CC should be
> set within s390_handle_ptf() instead?
OK, I will have a look and change it.
Thanks,
Pierre
>
> Thomas
>
>
>> + return 0;
>> +}
>> +
>> static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
>> {
>> int r = 0;
>> @@ -1470,6 +1481,9 @@ static int handle_b9(S390CPU *cpu, struct
>> kvm_run *run, uint8_t ipa1)
>> case PRIV_B9_RPCIT:
>> r = kvm_rpcit_service_call(cpu, run);
>> break;
>> + case PRIV_B9_PTF:
>> + r = kvm_handle_ptf(cpu, run);
>> + break;
>> case PRIV_B9_EQBS:
>> /* just inject exception */
>> r = -1;
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
* Re: [PATCH v7 12/13] s390x: CPU topology: CPU topology migration
2022-05-24 11:32 ` Thomas Huth
@ 2022-05-25 8:23 ` Pierre Morel
0 siblings, 0 replies; 42+ messages in thread
From: Pierre Morel @ 2022-05-25 8:23 UTC (permalink / raw)
To: Thomas Huth, qemu-s390x
Cc: qemu-devel, borntraeger, pasic, richard.henderson, david, cohuck,
mst, pbonzini, kvm, ehabkost, marcel.apfelbaum, eblake, armbru,
seiden, nrb, frankja
On 5/24/22 13:32, Thomas Huth wrote:
> On 20/04/2022 13.57, Pierre Morel wrote:
>> To migrate the Multiple Topology Change report, MTCR, we
>> get it from KVM and save its state in the topology VM State
>> Description during the presave and restore it to KVM on the
>> destination during the postload.
>>
>> The migration state is needed whenever the CPU topology
>> feature is activated.
>>
>> Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
>> ---
> ...
>> @@ -2592,22 +2594,57 @@ static void kvm_s390_set_mtr(uint64_t attr)
>> .group = KVM_S390_VM_CPU_TOPOLOGY,
>> .attr = attr,
>> };
>> + int ret;
>> - int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
>> -
>> + ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
>
> Nit: Unnecessary code churn.
yes thanks,
Pierre
>
> Thomas
>
--
Pierre Morel
IBM Lab Boeblingen
^ permalink raw reply [flat|nested] 42+ messages in thread
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2022-04-20 11:57 [PATCH v7 00/13] s390x: CPU Topology Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 01/13] Update linux headers Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 02/13] vfio: tolerate migration protocol v1 uapi renames Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 03/13] s390x: topology: CPU topology objects and structures Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-19 10:45 ` Thomas Huth
2022-05-19 15:22 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 04/13] s390x: topology: implementating Store Topology System Information Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-24 10:59 ` Thomas Huth
2022-05-25 8:16 ` Pierre Morel
2022-05-24 11:08 ` Thomas Huth
2022-05-25 8:18 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 05/13] s390x: topology: Adding books to CPU topology Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 06/13] s390x: topology: Adding books to STSI Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-24 11:07 ` Thomas Huth
2022-05-25 8:17 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 07/13] s390x: topology: Adding drawers to CPU topology Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 08/13] s390x: topology: Adding drawers to STSI Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-24 11:10 ` Thomas Huth
2022-05-25 8:19 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 09/13] s390x: topology: implementing numa for the s390x topology Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 10/13] s390x: kvm: topology: interception of PTF instruction Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-24 11:27 ` Thomas Huth
2022-05-25 8:22 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 11/13] s390x: topology: resetting the Topology-Change-Report Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 12/13] s390x: CPU topology: CPU topology migration Pierre Morel
2022-04-20 11:57 ` Pierre Morel
2022-05-24 11:32 ` Thomas Huth
2022-05-25 8:23 ` Pierre Morel
2022-04-20 11:57 ` [PATCH v7 13/13] s390x: topology: activating CPU topology Pierre Morel
2022-04-20 11:57 ` Pierre Morel
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