* [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture
@ 2022-12-02 2:59 Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/ Vikram Garhwal
` (11 more replies)
0 siblings, 12 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev; +Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal
Hi,
This series add xenpv machine for aarch64. Motivation behind creating xenpv
machine with IOREQ and TPM was to enable each guest on Xen aarch64 to have it's
own unique and emulated TPM.
This series does following:
1. Moved common xen functionalities from hw/i386/xen to hw/xen/ so those can
be used for aarch64.
2. We added a minimal xenpv arm machine which creates an IOREQ server and
support TPM.
Also, checkpatch.pl fails for 03/12 and 06/12. These fails are due to
moving old code to new place which was not QEMU code style compatible.
No new add code was added.
Regards,
Vikram
ChangeLog:
v1 -> v2
Merged patch 05 and 06.
04/12: xen-hvm-common.c:
1. Moved xen_be_init() and xen_be_register_common() from
xen_register_ioreq() to xen_register_backend().
2. Changed g_malloc to g_new and perror -> error_setg_errno.
3. Created a local subroutine function for Xen_IOREQ_register.
4. Fixed build issues with inclusion of xenstore.h.
5. Fixed minor errors.
Stefano Stabellini (5):
hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState
xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common
include/hw/xen/xen_common: return error from xen_create_ioreq_server
hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration
failure
meson.build: do not set have_xen_pci_passthrough for aarch64 targets
Vikram Garhwal (6):
hw/i386/xen/: move xen-mapcache.c to hw/xen/
hw/i386/xen: rearrange xen_hvm_init_pc
hw/xen/xen-hvm-common: Use g_new and error_setg_errno
accel/xen/xen-all: export xenstore_record_dm_state
hw/arm: introduce xenpv machine
meson.build: enable xenpv machine build for ARM
accel/xen/xen-all.c | 2 +-
hw/arm/meson.build | 2 +
hw/arm/xen_arm.c | 175 +++++
hw/i386/meson.build | 1 +
hw/i386/xen/meson.build | 1 -
hw/i386/xen/trace-events | 19 -
hw/i386/xen/xen-hvm.c | 1084 +++---------------------------
hw/xen/meson.build | 7 +
hw/xen/trace-events | 19 +
hw/xen/xen-hvm-common.c | 888 ++++++++++++++++++++++++
hw/{i386 => }/xen/xen-mapcache.c | 0
include/hw/arm/xen_arch_hvm.h | 9 +
include/hw/i386/xen_arch_hvm.h | 11 +
include/hw/xen/arch_hvm.h | 5 +
include/hw/xen/xen-hvm-common.h | 98 +++
include/hw/xen/xen.h | 2 +
include/hw/xen/xen_common.h | 13 +-
meson.build | 4 +-
18 files changed, 1323 insertions(+), 1017 deletions(-)
create mode 100644 hw/arm/xen_arm.c
create mode 100644 hw/xen/xen-hvm-common.c
rename hw/{i386 => }/xen/xen-mapcache.c (100%)
create mode 100644 include/hw/arm/xen_arch_hvm.h
create mode 100644 include/hw/i386/xen_arch_hvm.h
create mode 100644 include/hw/xen/arch_hvm.h
create mode 100644 include/hw/xen/xen-hvm-common.h
--
2.17.0
^ permalink raw reply [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 7:07 ` Philippe Mathieu-Daudé
2022-12-02 2:59 ` [QEMU][PATCH v2 02/11] hw/i386/xen: rearrange xen_hvm_init_pc Vikram Garhwal
` (10 subsequent siblings)
11 siblings, 1 reply; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Michael S. Tsirkin, Marcel Apfelbaum, Paolo Bonzini,
Richard Henderson, Eduardo Habkost, Stefano Stabellini,
Anthony Perard, Paul Durrant, open list:All patches CC here
xen-mapcache.c contains common functions which can be used for enabling Xen on
aarch64 with IOREQ handling. Moving it out from hw/i386/xen to hw/xen to make it
accessible for both aarch64 and x86.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
---
hw/i386/meson.build | 1 +
hw/i386/xen/meson.build | 1 -
hw/i386/xen/trace-events | 5 -----
hw/xen/meson.build | 4 ++++
hw/xen/trace-events | 5 +++++
hw/{i386 => }/xen/xen-mapcache.c | 0
6 files changed, 10 insertions(+), 6 deletions(-)
rename hw/{i386 => }/xen/xen-mapcache.c (100%)
diff --git a/hw/i386/meson.build b/hw/i386/meson.build
index 213e2e82b3..cfdbfdcbcb 100644
--- a/hw/i386/meson.build
+++ b/hw/i386/meson.build
@@ -33,5 +33,6 @@ subdir('kvm')
subdir('xen')
i386_ss.add_all(xenpv_ss)
+i386_ss.add_all(xen_ss)
hw_arch += {'i386': i386_ss}
diff --git a/hw/i386/xen/meson.build b/hw/i386/xen/meson.build
index be84130300..2fcc46e6ca 100644
--- a/hw/i386/xen/meson.build
+++ b/hw/i386/xen/meson.build
@@ -1,6 +1,5 @@
i386_ss.add(when: 'CONFIG_XEN', if_true: files(
'xen-hvm.c',
- 'xen-mapcache.c',
'xen_apic.c',
'xen_platform.c',
'xen_pvdevice.c',
diff --git a/hw/i386/xen/trace-events b/hw/i386/xen/trace-events
index 5d6be61090..a0c89d91c4 100644
--- a/hw/i386/xen/trace-events
+++ b/hw/i386/xen/trace-events
@@ -21,8 +21,3 @@ xen_map_resource_ioreq(uint32_t id, void *addr) "id: %u addr: %p"
cpu_ioreq_config_read(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
cpu_ioreq_config_write(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
-# xen-mapcache.c
-xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64
-xen_remap_bucket(uint64_t index) "index 0x%"PRIx64
-xen_map_cache_return(void* ptr) "%p"
-
diff --git a/hw/xen/meson.build b/hw/xen/meson.build
index ae0ace3046..19d0637c46 100644
--- a/hw/xen/meson.build
+++ b/hw/xen/meson.build
@@ -22,3 +22,7 @@ else
endif
specific_ss.add_all(when: ['CONFIG_XEN', xen], if_true: xen_specific_ss)
+
+xen_ss = ss.source_set()
+
+xen_ss.add(when: 'CONFIG_XEN', if_true: files('xen-mapcache.c'))
diff --git a/hw/xen/trace-events b/hw/xen/trace-events
index 3da3fd8348..2c8f238f42 100644
--- a/hw/xen/trace-events
+++ b/hw/xen/trace-events
@@ -41,3 +41,8 @@ xs_node_vprintf(char *path, char *value) "%s %s"
xs_node_vscanf(char *path, char *value) "%s %s"
xs_node_watch(char *path) "%s"
xs_node_unwatch(char *path) "%s"
+
+# xen-mapcache.c
+xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64
+xen_remap_bucket(uint64_t index) "index 0x%"PRIx64
+xen_map_cache_return(void* ptr) "%p"
diff --git a/hw/i386/xen/xen-mapcache.c b/hw/xen/xen-mapcache.c
similarity index 100%
rename from hw/i386/xen/xen-mapcache.c
rename to hw/xen/xen-mapcache.c
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 02/11] hw/i386/xen: rearrange xen_hvm_init_pc
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/ Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 03/11] hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState Vikram Garhwal
` (9 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant, Paolo Bonzini,
Richard Henderson, Eduardo Habkost, Michael S. Tsirkin,
Marcel Apfelbaum, open list:All patches CC here
In preparation to moving most of xen-hvm code to an arch-neutral location,
move non IOREQ references to:
- xen_get_vmport_regs_pfn
- xen_suspend_notifier
- xen_wakeup_notifier
- xen_ram_init
towards the end of the xen_hvm_init_pc() function.
This is done to keep the common ioreq functions in one place which will be
moved to new function in next patch in order to make it common to both x86 and
aarch64 machines.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Paul Durrant <paul@xen.org>
---
hw/i386/xen/xen-hvm.c | 49 ++++++++++++++++++++++---------------------
1 file changed, 25 insertions(+), 24 deletions(-)
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index e4293d6d66..b27484ad22 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -1416,12 +1416,6 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
- state->suspend.notify = xen_suspend_notifier;
- qemu_register_suspend_notifier(&state->suspend);
-
- state->wakeup.notify = xen_wakeup_notifier;
- qemu_register_wakeup_notifier(&state->wakeup);
-
/*
* Register wake-up support in QMP query-current-machine API
*/
@@ -1432,23 +1426,6 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
goto err;
}
- rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
- if (!rc) {
- DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
- state->shared_vmport_page =
- xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
- 1, &ioreq_pfn, NULL);
- if (state->shared_vmport_page == NULL) {
- error_report("map shared vmport IO page returned error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
- } else if (rc != -ENOSYS) {
- error_report("get vmport regs pfn returned error %d, rc=%d",
- errno, rc);
- goto err;
- }
-
/* Note: cpus is empty at this point in init */
state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
@@ -1486,7 +1463,6 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
#else
xen_map_cache_init(NULL, state);
#endif
- xen_ram_init(pcms, ms->ram_size, ram_memory);
qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
@@ -1513,6 +1489,31 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
QLIST_INIT(&xen_physmap);
xen_read_physmap(state);
+ state->suspend.notify = xen_suspend_notifier;
+ qemu_register_suspend_notifier(&state->suspend);
+
+ state->wakeup.notify = xen_wakeup_notifier;
+ qemu_register_wakeup_notifier(&state->wakeup);
+
+ rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
+ if (!rc) {
+ DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
+ state->shared_vmport_page =
+ xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
+ 1, &ioreq_pfn, NULL);
+ if (state->shared_vmport_page == NULL) {
+ error_report("map shared vmport IO page returned error %d handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+ } else if (rc != -ENOSYS) {
+ error_report("get vmport regs pfn returned error %d, rc=%d",
+ errno, rc);
+ goto err;
+ }
+
+ xen_ram_init(pcms, ms->ram_size, ram_memory);
+
/* Disable ACPI build because Xen handles it */
pcms->acpi_build_enabled = false;
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 03/11] hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/ Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 02/11] hw/i386/xen: rearrange xen_hvm_init_pc Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 04/11] xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common Vikram Garhwal
` (8 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant,
Michael S. Tsirkin, Marcel Apfelbaum, Paolo Bonzini,
Richard Henderson, Eduardo Habkost,
open list:All patches CC here
From: Stefano Stabellini <stefano.stabellini@amd.com>
In preparation to moving most of xen-hvm code to an arch-neutral location, move:
- shared_vmport_page
- log_for_dirtybit
- dirty_bitmap
- suspend
- wakeup
out of XenIOState struct as these are only used on x86, especially the ones
related to dirty logging.
Updated XenIOState can be used for both aarch64 and x86.
Also, remove free_phys_offset as it was unused.
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
hw/i386/xen/xen-hvm.c | 58 ++++++++++++++++++++-----------------------
1 file changed, 27 insertions(+), 31 deletions(-)
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index b27484ad22..e169de16c4 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -73,6 +73,7 @@ struct shared_vmport_iopage {
};
typedef struct shared_vmport_iopage shared_vmport_iopage_t;
#endif
+static shared_vmport_iopage_t *shared_vmport_page;
static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
{
@@ -95,6 +96,11 @@ typedef struct XenPhysmap {
} XenPhysmap;
static QLIST_HEAD(, XenPhysmap) xen_physmap;
+static const XenPhysmap *log_for_dirtybit;
+/* Buffer used by xen_sync_dirty_bitmap */
+static unsigned long *dirty_bitmap;
+static Notifier suspend;
+static Notifier wakeup;
typedef struct XenPciDevice {
PCIDevice *pci_dev;
@@ -105,7 +111,6 @@ typedef struct XenPciDevice {
typedef struct XenIOState {
ioservid_t ioservid;
shared_iopage_t *shared_page;
- shared_vmport_iopage_t *shared_vmport_page;
buffered_iopage_t *buffered_io_page;
xenforeignmemory_resource_handle *fres;
QEMUTimer *buffered_io_timer;
@@ -125,14 +130,8 @@ typedef struct XenIOState {
MemoryListener io_listener;
QLIST_HEAD(, XenPciDevice) dev_list;
DeviceListener device_listener;
- hwaddr free_phys_offset;
- const XenPhysmap *log_for_dirtybit;
- /* Buffer used by xen_sync_dirty_bitmap */
- unsigned long *dirty_bitmap;
Notifier exit;
- Notifier suspend;
- Notifier wakeup;
} XenIOState;
/* Xen specific function for piix pci */
@@ -462,10 +461,10 @@ static int xen_remove_from_physmap(XenIOState *state,
}
QLIST_REMOVE(physmap, list);
- if (state->log_for_dirtybit == physmap) {
- state->log_for_dirtybit = NULL;
- g_free(state->dirty_bitmap);
- state->dirty_bitmap = NULL;
+ if (log_for_dirtybit == physmap) {
+ log_for_dirtybit = NULL;
+ g_free(dirty_bitmap);
+ dirty_bitmap = NULL;
}
g_free(physmap);
@@ -626,16 +625,16 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
return;
}
- if (state->log_for_dirtybit == NULL) {
- state->log_for_dirtybit = physmap;
- state->dirty_bitmap = g_new(unsigned long, bitmap_size);
- } else if (state->log_for_dirtybit != physmap) {
+ if (log_for_dirtybit == NULL) {
+ log_for_dirtybit = physmap;
+ dirty_bitmap = g_new(unsigned long, bitmap_size);
+ } else if (log_for_dirtybit != physmap) {
/* Only one range for dirty bitmap can be tracked. */
return;
}
rc = xen_track_dirty_vram(xen_domid, start_addr >> TARGET_PAGE_BITS,
- npages, state->dirty_bitmap);
+ npages, dirty_bitmap);
if (rc < 0) {
#ifndef ENODATA
#define ENODATA ENOENT
@@ -650,7 +649,7 @@ static void xen_sync_dirty_bitmap(XenIOState *state,
}
for (i = 0; i < bitmap_size; i++) {
- unsigned long map = state->dirty_bitmap[i];
+ unsigned long map = dirty_bitmap[i];
while (map != 0) {
j = ctzl(map);
map &= ~(1ul << j);
@@ -676,12 +675,10 @@ static void xen_log_start(MemoryListener *listener,
static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section,
int old, int new)
{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
-
if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
- state->log_for_dirtybit = NULL;
- g_free(state->dirty_bitmap);
- state->dirty_bitmap = NULL;
+ log_for_dirtybit = NULL;
+ g_free(dirty_bitmap);
+ dirty_bitmap = NULL;
/* Disable dirty bit tracking */
xen_track_dirty_vram(xen_domid, 0, 0, NULL);
}
@@ -1021,9 +1018,9 @@ static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
{
vmware_regs_t *vmport_regs;
- assert(state->shared_vmport_page);
+ assert(shared_vmport_page);
vmport_regs =
- &state->shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
+ &shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs));
current_cpu = state->cpu_by_vcpu_id[state->send_vcpu];
@@ -1468,7 +1465,6 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
state->memory_listener = xen_memory_listener;
memory_listener_register(&state->memory_listener, &address_space_memory);
- state->log_for_dirtybit = NULL;
state->io_listener = xen_io_listener;
memory_listener_register(&state->io_listener, &address_space_io);
@@ -1489,19 +1485,19 @@ void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
QLIST_INIT(&xen_physmap);
xen_read_physmap(state);
- state->suspend.notify = xen_suspend_notifier;
- qemu_register_suspend_notifier(&state->suspend);
+ suspend.notify = xen_suspend_notifier;
+ qemu_register_suspend_notifier(&suspend);
- state->wakeup.notify = xen_wakeup_notifier;
- qemu_register_wakeup_notifier(&state->wakeup);
+ wakeup.notify = xen_wakeup_notifier;
+ qemu_register_wakeup_notifier(&wakeup);
rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
if (!rc) {
DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
- state->shared_vmport_page =
+ shared_vmport_page =
xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
1, &ioreq_pfn, NULL);
- if (state->shared_vmport_page == NULL) {
+ if (shared_vmport_page == NULL) {
error_report("map shared vmport IO page returned error %d handle=%p",
errno, xen_xc);
goto err;
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 04/11] xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (2 preceding siblings ...)
2022-12-02 2:59 ` [QEMU][PATCH v2 03/11] hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server Vikram Garhwal
` (7 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant, Paolo Bonzini,
Richard Henderson, Eduardo Habkost, Michael S. Tsirkin,
Marcel Apfelbaum, open list:All patches CC here
From: Stefano Stabellini <stefano.stabellini@amd.com>
This patch does following:
1. creates arch_handle_ioreq() and arch_xen_set_memory(). This is done in
preparation for moving most of xen-hvm code to an arch-neutral location,
move the x86-specific portion of xen_set_memory to arch_xen_set_memory.
Also, move handle_vmport_ioreq to arch_handle_ioreq.
2. Pure code movement: move common functions to hw/xen/xen-hvm-common.c
Extract common functionalities from hw/i386/xen/xen-hvm.c and move them to
hw/xen/xen-hvm-common.c. These common functions are useful for creating
an IOREQ server.
xen_hvm_init_pc() contains the architecture independent code for creating
and mapping a IOREQ server, connecting memory and IO listeners, initializing
a xen bus and registering backends. Moved this common xen code to a new
function xen_register_ioreq() which can be used by both x86 and ARM machines.
Following functions are moved to hw/xen/xen-hvm-common.c:
xen_vcpu_eport(), xen_vcpu_ioreq(), xen_ram_alloc(), xen_set_memory(),
xen_region_add(), xen_region_del(), xen_io_add(), xen_io_del(),
xen_device_realize(), xen_device_unrealize(),
cpu_get_ioreq_from_shared_memory(), cpu_get_ioreq(), do_inp(),
do_outp(), rw_phys_req_item(), read_phys_req_item(),
write_phys_req_item(), cpu_ioreq_pio(), cpu_ioreq_move(),
cpu_ioreq_config(), handle_ioreq(), handle_buffered_iopage(),
handle_buffered_io(), cpu_handle_ioreq(), xen_main_loop_prepare(),
xen_hvm_change_state_handler(), xen_exit_notifier(),
xen_map_ioreq_server(), destroy_hvm_domain() and
xen_shutdown_fatal_error()
3. Removed static type from below functions:
1. xen_region_add()
2. xen_region_del()
3. xen_io_add()
4. xen_io_del()
5. xen_device_realize()
6. xen_device_unrealize()
7. xen_hvm_change_state_handler()
8. cpu_ioreq_pio()
9. xen_exit_notifier()
4. Replace TARGET_PAGE_SIZE with XC_PAGE_SIZE to match the page side with Xen.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
---
hw/i386/xen/trace-events | 14 -
hw/i386/xen/xen-hvm.c | 1023 ++-----------------------------
hw/xen/meson.build | 5 +-
hw/xen/trace-events | 14 +
hw/xen/xen-hvm-common.c | 868 ++++++++++++++++++++++++++
include/hw/i386/xen_arch_hvm.h | 11 +
include/hw/xen/arch_hvm.h | 3 +
include/hw/xen/xen-hvm-common.h | 98 +++
8 files changed, 1063 insertions(+), 973 deletions(-)
create mode 100644 hw/xen/xen-hvm-common.c
create mode 100644 include/hw/i386/xen_arch_hvm.h
create mode 100644 include/hw/xen/arch_hvm.h
create mode 100644 include/hw/xen/xen-hvm-common.h
diff --git a/hw/i386/xen/trace-events b/hw/i386/xen/trace-events
index a0c89d91c4..5d0a8d6dcf 100644
--- a/hw/i386/xen/trace-events
+++ b/hw/i386/xen/trace-events
@@ -7,17 +7,3 @@ xen_platform_log(char *s) "xen platform: %s"
xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space (address 0x%"PRIx64")"
xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (address 0x%"PRIx64")"
-# xen-hvm.c
-xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: 0x%lx, size 0x%lx"
-xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "0x%"PRIx64" size 0x%lx, log_dirty %i"
-handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
-cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
-cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-xen_map_resource_ioreq(uint32_t id, void *addr) "id: %u addr: %p"
-cpu_ioreq_config_read(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
-cpu_ioreq_config_write(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
-
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index e169de16c4..daba6c9caa 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -10,46 +10,20 @@
#include "qemu/osdep.h"
#include "qemu/units.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-migration.h"
+#include "trace.h"
-#include "cpu.h"
-#include "hw/pci/pci.h"
-#include "hw/pci/pci_host.h"
#include "hw/i386/pc.h"
#include "hw/irq.h"
-#include "hw/hw.h"
#include "hw/i386/apic-msidef.h"
-#include "hw/xen/xen_common.h"
-#include "hw/xen/xen-legacy-backend.h"
-#include "hw/xen/xen-bus.h"
#include "hw/xen/xen-x86.h"
-#include "qapi/error.h"
-#include "qapi/qapi-commands-migration.h"
-#include "qemu/error-report.h"
-#include "qemu/main-loop.h"
#include "qemu/range.h"
-#include "sysemu/runstate.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/xen.h"
-#include "sysemu/xen-mapcache.h"
-#include "trace.h"
-#include <xen/hvm/ioreq.h>
+#include "hw/xen/xen-hvm-common.h"
+#include "hw/xen/arch_hvm.h"
#include <xen/hvm/e820.h>
-//#define DEBUG_XEN_HVM
-
-#ifdef DEBUG_XEN_HVM
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
-static MemoryRegion *framebuffer;
-static bool xen_in_migration;
-
/* Compatibility with older version */
/* This allows QEMU to build on a system that has Xen 4.5 or earlier
@@ -75,26 +49,9 @@ typedef struct shared_vmport_iopage shared_vmport_iopage_t;
#endif
static shared_vmport_iopage_t *shared_vmport_page;
-static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
-{
- return shared_page->vcpu_ioreq[i].vp_eport;
-}
-static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
-{
- return &shared_page->vcpu_ioreq[vcpu];
-}
-
-#define BUFFER_IO_MAX_DELAY 100
-
-typedef struct XenPhysmap {
- hwaddr start_addr;
- ram_addr_t size;
- const char *name;
- hwaddr phys_offset;
-
- QLIST_ENTRY(XenPhysmap) list;
-} XenPhysmap;
-
+static MemoryRegion ram_640k, ram_lo, ram_hi;
+static MemoryRegion *framebuffer;
+static bool xen_in_migration;
static QLIST_HEAD(, XenPhysmap) xen_physmap;
static const XenPhysmap *log_for_dirtybit;
/* Buffer used by xen_sync_dirty_bitmap */
@@ -102,38 +59,6 @@ static unsigned long *dirty_bitmap;
static Notifier suspend;
static Notifier wakeup;
-typedef struct XenPciDevice {
- PCIDevice *pci_dev;
- uint32_t sbdf;
- QLIST_ENTRY(XenPciDevice) entry;
-} XenPciDevice;
-
-typedef struct XenIOState {
- ioservid_t ioservid;
- shared_iopage_t *shared_page;
- buffered_iopage_t *buffered_io_page;
- xenforeignmemory_resource_handle *fres;
- QEMUTimer *buffered_io_timer;
- CPUState **cpu_by_vcpu_id;
- /* the evtchn port for polling the notification, */
- evtchn_port_t *ioreq_local_port;
- /* evtchn remote and local ports for buffered io */
- evtchn_port_t bufioreq_remote_port;
- evtchn_port_t bufioreq_local_port;
- /* the evtchn fd for polling */
- xenevtchn_handle *xce_handle;
- /* which vcpu we are serving */
- int send_vcpu;
-
- struct xs_handle *xenstore;
- MemoryListener memory_listener;
- MemoryListener io_listener;
- QLIST_HEAD(, XenPciDevice) dev_list;
- DeviceListener device_listener;
-
- Notifier exit;
-} XenIOState;
-
/* Xen specific function for piix pci */
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
@@ -246,42 +171,6 @@ static void xen_ram_init(PCMachineState *pcms,
}
}
-void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
- Error **errp)
-{
- unsigned long nr_pfn;
- xen_pfn_t *pfn_list;
- int i;
-
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- /* RAM already populated in Xen */
- fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
- " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
- __func__, size, ram_addr);
- return;
- }
-
- if (mr == &ram_memory) {
- return;
- }
-
- trace_xen_ram_alloc(ram_addr, size);
-
- nr_pfn = size >> TARGET_PAGE_BITS;
- pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
-
- for (i = 0; i < nr_pfn; i++) {
- pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
- }
-
- if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
- error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
- ram_addr);
- }
-
- g_free(pfn_list);
-}
-
static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
{
XenPhysmap *physmap = NULL;
@@ -471,144 +360,6 @@ static int xen_remove_from_physmap(XenIOState *state,
return 0;
}
-static void xen_set_memory(struct MemoryListener *listener,
- MemoryRegionSection *section,
- bool add)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
- hwaddr start_addr = section->offset_within_address_space;
- ram_addr_t size = int128_get64(section->size);
- bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
- hvmmem_type_t mem_type;
-
- if (section->mr == &ram_memory) {
- return;
- } else {
- if (add) {
- xen_map_memory_section(xen_domid, state->ioservid,
- section);
- } else {
- xen_unmap_memory_section(xen_domid, state->ioservid,
- section);
- }
- }
-
- if (!memory_region_is_ram(section->mr)) {
- return;
- }
-
- if (log_dirty != add) {
- return;
- }
-
- trace_xen_client_set_memory(start_addr, size, log_dirty);
-
- start_addr &= TARGET_PAGE_MASK;
- size = TARGET_PAGE_ALIGN(size);
-
- if (add) {
- if (!memory_region_is_rom(section->mr)) {
- xen_add_to_physmap(state, start_addr, size,
- section->mr, section->offset_within_region);
- } else {
- mem_type = HVMMEM_ram_ro;
- if (xen_set_mem_type(xen_domid, mem_type,
- start_addr >> TARGET_PAGE_BITS,
- size >> TARGET_PAGE_BITS)) {
- DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx"\n",
- start_addr);
- }
- }
- } else {
- if (xen_remove_from_physmap(state, start_addr, size) < 0) {
- DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
- }
- }
-}
-
-static void xen_region_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- memory_region_ref(section->mr);
- xen_set_memory(listener, section, true);
-}
-
-static void xen_region_del(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- xen_set_memory(listener, section, false);
- memory_region_unref(section->mr);
-}
-
-static void xen_io_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- XenIOState *state = container_of(listener, XenIOState, io_listener);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- memory_region_ref(mr);
-
- xen_map_io_section(xen_domid, state->ioservid, section);
-}
-
-static void xen_io_del(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- XenIOState *state = container_of(listener, XenIOState, io_listener);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- xen_unmap_io_section(xen_domid, state->ioservid, section);
-
- memory_region_unref(mr);
-}
-
-static void xen_device_realize(DeviceListener *listener,
- DeviceState *dev)
-{
- XenIOState *state = container_of(listener, XenIOState, device_listener);
-
- if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
- PCIDevice *pci_dev = PCI_DEVICE(dev);
- XenPciDevice *xendev = g_new(XenPciDevice, 1);
-
- xendev->pci_dev = pci_dev;
- xendev->sbdf = PCI_BUILD_BDF(pci_dev_bus_num(pci_dev),
- pci_dev->devfn);
- QLIST_INSERT_HEAD(&state->dev_list, xendev, entry);
-
- xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
- }
-}
-
-static void xen_device_unrealize(DeviceListener *listener,
- DeviceState *dev)
-{
- XenIOState *state = container_of(listener, XenIOState, device_listener);
-
- if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
- PCIDevice *pci_dev = PCI_DEVICE(dev);
- XenPciDevice *xendev, *next;
-
- xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
-
- QLIST_FOREACH_SAFE(xendev, &state->dev_list, entry, next) {
- if (xendev->pci_dev == pci_dev) {
- QLIST_REMOVE(xendev, entry);
- g_free(xendev);
- break;
- }
- }
- }
-}
-
static void xen_sync_dirty_bitmap(XenIOState *state,
hwaddr start_addr,
ram_addr_t size)
@@ -716,277 +467,6 @@ static MemoryListener xen_memory_listener = {
.priority = 10,
};
-static MemoryListener xen_io_listener = {
- .name = "xen-io",
- .region_add = xen_io_add,
- .region_del = xen_io_del,
- .priority = 10,
-};
-
-static DeviceListener xen_device_listener = {
- .realize = xen_device_realize,
- .unrealize = xen_device_unrealize,
-};
-
-/* get the ioreq packets from share mem */
-static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
-{
- ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
-
- if (req->state != STATE_IOREQ_READY) {
- DPRINTF("I/O request not ready: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
- return NULL;
- }
-
- xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
-
- req->state = STATE_IOREQ_INPROCESS;
- return req;
-}
-
-/* use poll to get the port notification */
-/* ioreq_vec--out,the */
-/* retval--the number of ioreq packet */
-static ioreq_t *cpu_get_ioreq(XenIOState *state)
-{
- MachineState *ms = MACHINE(qdev_get_machine());
- unsigned int max_cpus = ms->smp.max_cpus;
- int i;
- evtchn_port_t port;
-
- port = xenevtchn_pending(state->xce_handle);
- if (port == state->bufioreq_local_port) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- return NULL;
- }
-
- if (port != -1) {
- for (i = 0; i < max_cpus; i++) {
- if (state->ioreq_local_port[i] == port) {
- break;
- }
- }
-
- if (i == max_cpus) {
- hw_error("Fatal error while trying to get io event!\n");
- }
-
- /* unmask the wanted port again */
- xenevtchn_unmask(state->xce_handle, port);
-
- /* get the io packet from shared memory */
- state->send_vcpu = i;
- return cpu_get_ioreq_from_shared_memory(state, i);
- }
-
- /* read error or read nothing */
- return NULL;
-}
-
-static uint32_t do_inp(uint32_t addr, unsigned long size)
-{
- switch (size) {
- case 1:
- return cpu_inb(addr);
- case 2:
- return cpu_inw(addr);
- case 4:
- return cpu_inl(addr);
- default:
- hw_error("inp: bad size: %04x %lx", addr, size);
- }
-}
-
-static void do_outp(uint32_t addr,
- unsigned long size, uint32_t val)
-{
- switch (size) {
- case 1:
- return cpu_outb(addr, val);
- case 2:
- return cpu_outw(addr, val);
- case 4:
- return cpu_outl(addr, val);
- default:
- hw_error("outp: bad size: %04x %lx", addr, size);
- }
-}
-
-/*
- * Helper functions which read/write an object from/to physical guest
- * memory, as part of the implementation of an ioreq.
- *
- * Equivalent to
- * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
- * val, req->size, 0/1)
- * except without the integer overflow problems.
- */
-static void rw_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val, int rw)
-{
- /* Do everything unsigned so overflow just results in a truncated result
- * and accesses to undesired parts of guest memory, which is up
- * to the guest */
- hwaddr offset = (hwaddr)req->size * i;
- if (req->df) {
- addr -= offset;
- } else {
- addr += offset;
- }
- cpu_physical_memory_rw(addr, val, req->size, rw);
-}
-
-static inline void read_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 0);
-}
-static inline void write_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 1);
-}
-
-
-static void cpu_ioreq_pio(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(uint32_t)) {
- hw_error("PIO: bad size (%u)", req->size);
- }
-
- if (req->dir == IOREQ_READ) {
- if (!req->data_is_ptr) {
- req->data = do_inp(req->addr, req->size);
- trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
- req->size);
- } else {
- uint32_t tmp;
-
- for (i = 0; i < req->count; i++) {
- tmp = do_inp(req->addr, req->size);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- }
- } else if (req->dir == IOREQ_WRITE) {
- if (!req->data_is_ptr) {
- trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
- req->size);
- do_outp(req->addr, req->size, req->data);
- } else {
- for (i = 0; i < req->count; i++) {
- uint32_t tmp = 0;
-
- read_phys_req_item(req->data, req, i, &tmp);
- do_outp(req->addr, req->size, tmp);
- }
- }
- }
-}
-
-static void cpu_ioreq_move(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(req->data)) {
- hw_error("MMIO: bad size (%u)", req->size);
- }
-
- if (!req->data_is_ptr) {
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &req->data);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- write_phys_req_item(req->addr, req, i, &req->data);
- }
- }
- } else {
- uint64_t tmp;
-
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &tmp);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->data, req, i, &tmp);
- write_phys_req_item(req->addr, req, i, &tmp);
- }
- }
- }
-}
-
-static void cpu_ioreq_config(XenIOState *state, ioreq_t *req)
-{
- uint32_t sbdf = req->addr >> 32;
- uint32_t reg = req->addr;
- XenPciDevice *xendev;
-
- if (req->size != sizeof(uint8_t) && req->size != sizeof(uint16_t) &&
- req->size != sizeof(uint32_t)) {
- hw_error("PCI config access: bad size (%u)", req->size);
- }
-
- if (req->count != 1) {
- hw_error("PCI config access: bad count (%u)", req->count);
- }
-
- QLIST_FOREACH(xendev, &state->dev_list, entry) {
- if (xendev->sbdf != sbdf) {
- continue;
- }
-
- if (!req->data_is_ptr) {
- if (req->dir == IOREQ_READ) {
- req->data = pci_host_config_read_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->size);
- trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
- req->size, req->data);
- } else if (req->dir == IOREQ_WRITE) {
- trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
- req->size, req->data);
- pci_host_config_write_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->data, req->size);
- }
- } else {
- uint32_t tmp;
-
- if (req->dir == IOREQ_READ) {
- tmp = pci_host_config_read_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->size);
- trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
- req->size, tmp);
- write_phys_req_item(req->data, req, 0, &tmp);
- } else if (req->dir == IOREQ_WRITE) {
- read_phys_req_item(req->data, req, 0, &tmp);
- trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
- req->size, tmp);
- pci_host_config_write_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- tmp, req->size);
- }
- }
- }
-}
-
static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
{
X86CPU *cpu;
@@ -1030,226 +510,6 @@ static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
current_cpu = NULL;
}
-static void handle_ioreq(XenIOState *state, ioreq_t *req)
-{
- trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
- (req->size < sizeof (target_ulong))) {
- req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
- }
-
- if (req->dir == IOREQ_WRITE)
- trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- switch (req->type) {
- case IOREQ_TYPE_PIO:
- cpu_ioreq_pio(req);
- break;
- case IOREQ_TYPE_COPY:
- cpu_ioreq_move(req);
- break;
- case IOREQ_TYPE_VMWARE_PORT:
- handle_vmport_ioreq(state, req);
- break;
- case IOREQ_TYPE_TIMEOFFSET:
- break;
- case IOREQ_TYPE_INVALIDATE:
- xen_invalidate_map_cache();
- break;
- case IOREQ_TYPE_PCI_CONFIG:
- cpu_ioreq_config(state, req);
- break;
- default:
- hw_error("Invalid ioreq type 0x%x\n", req->type);
- }
- if (req->dir == IOREQ_READ) {
- trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
- }
-}
-
-static bool handle_buffered_iopage(XenIOState *state)
-{
- buffered_iopage_t *buf_page = state->buffered_io_page;
- buf_ioreq_t *buf_req = NULL;
- bool handled_ioreq = false;
- ioreq_t req;
- int qw;
-
- if (!buf_page) {
- return 0;
- }
-
- memset(&req, 0x00, sizeof(req));
- req.state = STATE_IOREQ_READY;
- req.count = 1;
- req.dir = IOREQ_WRITE;
-
- for (;;) {
- uint32_t rdptr = buf_page->read_pointer, wrptr;
-
- xen_rmb();
- wrptr = buf_page->write_pointer;
- xen_rmb();
- if (rdptr != buf_page->read_pointer) {
- continue;
- }
- if (rdptr == wrptr) {
- break;
- }
- buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
- req.size = 1U << buf_req->size;
- req.addr = buf_req->addr;
- req.data = buf_req->data;
- req.type = buf_req->type;
- xen_rmb();
- qw = (req.size == 8);
- if (qw) {
- if (rdptr + 1 == wrptr) {
- hw_error("Incomplete quad word buffered ioreq");
- }
- buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
- IOREQ_BUFFER_SLOT_NUM];
- req.data |= ((uint64_t)buf_req->data) << 32;
- xen_rmb();
- }
-
- handle_ioreq(state, &req);
-
- /* Only req.data may get updated by handle_ioreq(), albeit even that
- * should not happen as such data would never make it to the guest (we
- * can only usefully see writes here after all).
- */
- assert(req.state == STATE_IOREQ_READY);
- assert(req.count == 1);
- assert(req.dir == IOREQ_WRITE);
- assert(!req.data_is_ptr);
-
- qatomic_add(&buf_page->read_pointer, qw + 1);
- handled_ioreq = true;
- }
-
- return handled_ioreq;
-}
-
-static void handle_buffered_io(void *opaque)
-{
- XenIOState *state = opaque;
-
- if (handle_buffered_iopage(state)) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- } else {
- timer_del(state->buffered_io_timer);
- xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
- }
-}
-
-static void cpu_handle_ioreq(void *opaque)
-{
- XenIOState *state = opaque;
- ioreq_t *req = cpu_get_ioreq(state);
-
- handle_buffered_iopage(state);
- if (req) {
- ioreq_t copy = *req;
-
- xen_rmb();
- handle_ioreq(state, ©);
- req->data = copy.data;
-
- if (req->state != STATE_IOREQ_INPROCESS) {
- fprintf(stderr, "Badness in I/O request ... not in service?!: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u, type: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size, req->type);
- destroy_hvm_domain(false);
- return;
- }
-
- xen_wmb(); /* Update ioreq contents /then/ update state. */
-
- /*
- * We do this before we send the response so that the tools
- * have the opportunity to pick up on the reset before the
- * guest resumes and does a hlt with interrupts disabled which
- * causes Xen to powerdown the domain.
- */
- if (runstate_is_running()) {
- ShutdownCause request;
-
- if (qemu_shutdown_requested_get()) {
- destroy_hvm_domain(false);
- }
- request = qemu_reset_requested_get();
- if (request) {
- qemu_system_reset(request);
- destroy_hvm_domain(true);
- }
- }
-
- req->state = STATE_IORESP_READY;
- xenevtchn_notify(state->xce_handle,
- state->ioreq_local_port[state->send_vcpu]);
- }
-}
-
-static void xen_main_loop_prepare(XenIOState *state)
-{
- int evtchn_fd = -1;
-
- if (state->xce_handle != NULL) {
- evtchn_fd = xenevtchn_fd(state->xce_handle);
- }
-
- state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
- state);
-
- if (evtchn_fd != -1) {
- CPUState *cpu_state;
-
- DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
- CPU_FOREACH(cpu_state) {
- DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
- __func__, cpu_state->cpu_index, cpu_state);
- state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
- }
- qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
- }
-}
-
-
-static void xen_hvm_change_state_handler(void *opaque, bool running,
- RunState rstate)
-{
- XenIOState *state = opaque;
-
- if (running) {
- xen_main_loop_prepare(state);
- }
-
- xen_set_ioreq_server_state(xen_domid,
- state->ioservid,
- (rstate == RUN_STATE_RUNNING));
-}
-
-static void xen_exit_notifier(Notifier *n, void *data)
-{
- XenIOState *state = container_of(n, XenIOState, exit);
-
- xen_destroy_ioreq_server(xen_domid, state->ioservid);
- if (state->fres != NULL) {
- xenforeignmemory_unmap_resource(xen_fmem, state->fres);
- }
-
- xenevtchn_close(state->xce_handle);
- xs_daemon_close(state->xenstore);
-}
-
#ifdef XEN_COMPAT_PHYSMAP
static void xen_read_physmap(XenIOState *state)
{
@@ -1309,178 +569,19 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data)
xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
}
-static int xen_map_ioreq_server(XenIOState *state)
-{
- void *addr = NULL;
- xen_pfn_t ioreq_pfn;
- xen_pfn_t bufioreq_pfn;
- evtchn_port_t bufioreq_evtchn;
- int rc;
-
- /*
- * Attempt to map using the resource API and fall back to normal
- * foreign mapping if this is not supported.
- */
- QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq != 0);
- QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
- state->fres = xenforeignmemory_map_resource(xen_fmem, xen_domid,
- XENMEM_resource_ioreq_server,
- state->ioservid, 0, 2,
- &addr,
- PROT_READ | PROT_WRITE, 0);
- if (state->fres != NULL) {
- trace_xen_map_resource_ioreq(state->ioservid, addr);
- state->buffered_io_page = addr;
- state->shared_page = addr + TARGET_PAGE_SIZE;
- } else if (errno != EOPNOTSUPP) {
- error_report("failed to map ioreq server resources: error %d handle=%p",
- errno, xen_xc);
- return -1;
- }
-
- rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
- (state->shared_page == NULL) ?
- &ioreq_pfn : NULL,
- (state->buffered_io_page == NULL) ?
- &bufioreq_pfn : NULL,
- &bufioreq_evtchn);
- if (rc < 0) {
- error_report("failed to get ioreq server info: error %d handle=%p",
- errno, xen_xc);
- return rc;
- }
-
- if (state->shared_page == NULL) {
- DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
-
- state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ | PROT_WRITE,
- 1, &ioreq_pfn, NULL);
- if (state->shared_page == NULL) {
- error_report("map shared IO page returned error %d handle=%p",
- errno, xen_xc);
- }
- }
-
- if (state->buffered_io_page == NULL) {
- DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
-
- state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ | PROT_WRITE,
- 1, &bufioreq_pfn,
- NULL);
- if (state->buffered_io_page == NULL) {
- error_report("map buffered IO page returned error %d", errno);
- return -1;
- }
- }
-
- if (state->shared_page == NULL || state->buffered_io_page == NULL) {
- return -1;
- }
-
- DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
-
- state->bufioreq_remote_port = bufioreq_evtchn;
-
- return 0;
-}
-
void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
{
MachineState *ms = MACHINE(pcms);
unsigned int max_cpus = ms->smp.max_cpus;
- int i, rc;
+ int rc;
xen_pfn_t ioreq_pfn;
XenIOState *state;
state = g_new0(XenIOState, 1);
- state->xce_handle = xenevtchn_open(NULL, 0);
- if (state->xce_handle == NULL) {
- perror("xen: event channel open");
- goto err;
- }
-
- state->xenstore = xs_daemon_open();
- if (state->xenstore == NULL) {
- perror("xen: xenstore open");
- goto err;
- }
-
- xen_create_ioreq_server(xen_domid, &state->ioservid);
-
- state->exit.notify = xen_exit_notifier;
- qemu_add_exit_notifier(&state->exit);
-
- /*
- * Register wake-up support in QMP query-current-machine API
- */
- qemu_register_wakeup_support();
+ xen_register_ioreq(state, max_cpus, xen_memory_listener);
- rc = xen_map_ioreq_server(state);
- if (rc < 0) {
- goto err;
- }
-
- /* Note: cpus is empty at this point in init */
- state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
-
- rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
- if (rc < 0) {
- error_report("failed to enable ioreq server info: error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
-
- state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
-
- /* FIXME: how about if we overflow the page here? */
- for (i = 0; i < max_cpus; i++) {
- rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
- xen_vcpu_eport(state->shared_page, i));
- if (rc == -1) {
- error_report("shared evtchn %d bind error %d", i, errno);
- goto err;
- }
- state->ioreq_local_port[i] = rc;
- }
-
- rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
- state->bufioreq_remote_port);
- if (rc == -1) {
- error_report("buffered evtchn bind error %d", errno);
- goto err;
- }
- state->bufioreq_local_port = rc;
-
- /* Init RAM management */
-#ifdef XEN_COMPAT_PHYSMAP
- xen_map_cache_init(xen_phys_offset_to_gaddr, state);
-#else
- xen_map_cache_init(NULL, state);
-#endif
-
- qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
-
- state->memory_listener = xen_memory_listener;
- memory_listener_register(&state->memory_listener, &address_space_memory);
-
- state->io_listener = xen_io_listener;
- memory_listener_register(&state->io_listener, &address_space_io);
-
- state->device_listener = xen_device_listener;
- QLIST_INIT(&state->dev_list);
- device_listener_register(&state->device_listener);
-
- xen_bus_init();
-
- /* Initialize backend core & drivers */
- if (xen_be_init() != 0) {
- error_report("xen backend core setup failed");
- goto err;
- }
- xen_be_register_common();
+ xen_register_backend(state);
QLIST_INIT(&xen_physmap);
xen_read_physmap(state);
@@ -1520,59 +621,11 @@ err:
exit(1);
}
-void destroy_hvm_domain(bool reboot)
-{
- xc_interface *xc_handle;
- int sts;
- int rc;
-
- unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
-
- if (xen_dmod) {
- rc = xendevicemodel_shutdown(xen_dmod, xen_domid, reason);
- if (!rc) {
- return;
- }
- if (errno != ENOTTY /* old Xen */) {
- perror("xendevicemodel_shutdown failed");
- }
- /* well, try the old thing then */
- }
-
- xc_handle = xc_interface_open(0, 0, 0);
- if (xc_handle == NULL) {
- fprintf(stderr, "Cannot acquire xenctrl handle\n");
- } else {
- sts = xc_domain_shutdown(xc_handle, xen_domid, reason);
- if (sts != 0) {
- fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
- "sts %d, %s\n", reboot ? "reboot" : "poweroff",
- sts, strerror(errno));
- } else {
- fprintf(stderr, "Issued domain %d %s\n", xen_domid,
- reboot ? "reboot" : "poweroff");
- }
- xc_interface_close(xc_handle);
- }
-}
-
void xen_register_framebuffer(MemoryRegion *mr)
{
framebuffer = mr;
}
-void xen_shutdown_fatal_error(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "Will destroy the domain.\n");
- /* destroy the domain */
- qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR);
-}
-
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
if (unlikely(xen_in_migration)) {
@@ -1604,3 +657,57 @@ void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION);
}
}
+
+void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
+ bool add)
+{
+ hwaddr start_addr = section->offset_within_address_space;
+ ram_addr_t size = int128_get64(section->size);
+ bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
+ hvmmem_type_t mem_type;
+
+ if (!memory_region_is_ram(section->mr)) {
+ return;
+ }
+
+ if (log_dirty != add) {
+ return;
+ }
+
+ trace_xen_client_set_memory(start_addr, size, log_dirty);
+
+ start_addr &= TARGET_PAGE_MASK;
+ size = TARGET_PAGE_ALIGN(size);
+
+ if (add) {
+ if (!memory_region_is_rom(section->mr)) {
+ xen_add_to_physmap(state, start_addr, size,
+ section->mr, section->offset_within_region);
+ } else {
+ mem_type = HVMMEM_ram_ro;
+ if (xen_set_mem_type(xen_domid, mem_type,
+ start_addr >> TARGET_PAGE_BITS,
+ size >> TARGET_PAGE_BITS)) {
+ DPRINTF("xen_set_mem_type error, addr: "TARGET_FMT_plx"\n",
+ start_addr);
+ }
+ }
+ } else {
+ if (xen_remove_from_physmap(state, start_addr, size) < 0) {
+ DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
+ }
+ }
+}
+
+void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
+{
+ switch (req->type) {
+ case IOREQ_TYPE_VMWARE_PORT:
+ handle_vmport_ioreq(state, req);
+ break;
+ default:
+ hw_error("Invalid ioreq type 0x%x\n", req->type);
+ }
+
+ return;
+}
diff --git a/hw/xen/meson.build b/hw/xen/meson.build
index 19d0637c46..008e036d63 100644
--- a/hw/xen/meson.build
+++ b/hw/xen/meson.build
@@ -25,4 +25,7 @@ specific_ss.add_all(when: ['CONFIG_XEN', xen], if_true: xen_specific_ss)
xen_ss = ss.source_set()
-xen_ss.add(when: 'CONFIG_XEN', if_true: files('xen-mapcache.c'))
+xen_ss.add(when: 'CONFIG_XEN', if_true: files(
+ 'xen-mapcache.c',
+ 'xen-hvm-common.c',
+))
diff --git a/hw/xen/trace-events b/hw/xen/trace-events
index 2c8f238f42..02ca1183da 100644
--- a/hw/xen/trace-events
+++ b/hw/xen/trace-events
@@ -42,6 +42,20 @@ xs_node_vscanf(char *path, char *value) "%s %s"
xs_node_watch(char *path) "%s"
xs_node_unwatch(char *path) "%s"
+# xen-hvm.c
+xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: 0x%lx, size 0x%lx"
+xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "0x%"PRIx64" size 0x%lx, log_dirty %i"
+handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
+handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
+handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
+cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
+cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
+cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
+cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
+xen_map_resource_ioreq(uint32_t id, void *addr) "id: %u addr: %p"
+cpu_ioreq_config_read(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
+cpu_ioreq_config_write(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
+
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64
xen_remap_bucket(uint64_t index) "index 0x%"PRIx64
diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c
new file mode 100644
index 0000000000..403b2eebbf
--- /dev/null
+++ b/hw/xen/xen-hvm-common.c
@@ -0,0 +1,868 @@
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+#include "qapi/error.h"
+#include "trace.h"
+
+#include "hw/pci/pci_host.h"
+#include "hw/xen/xen-hvm-common.h"
+#include "hw/xen/xen-legacy-backend.h"
+#include "hw/xen/xen-bus.h"
+#include "hw/boards.h"
+#include "hw/xen/arch_hvm.h"
+
+MemoryRegion ram_memory;
+
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
+ Error **errp)
+{
+ unsigned long nr_pfn;
+ xen_pfn_t *pfn_list;
+ int i;
+
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ /* RAM already populated in Xen */
+ fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
+ " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
+ __func__, size, ram_addr);
+ return;
+ }
+
+ if (mr == &ram_memory) {
+ return;
+ }
+
+ trace_xen_ram_alloc(ram_addr, size);
+
+ nr_pfn = size >> TARGET_PAGE_BITS;
+ pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
+
+ for (i = 0; i < nr_pfn; i++) {
+ pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
+ }
+
+ if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
+ error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
+ ram_addr);
+ }
+
+ g_free(pfn_list);
+}
+
+
+static void xen_set_memory(struct MemoryListener *listener,
+ MemoryRegionSection *section,
+ bool add)
+{
+ XenIOState *state = container_of(listener, XenIOState, memory_listener);
+
+ if (section->mr == &ram_memory) {
+ return;
+ } else {
+ if (add) {
+ xen_map_memory_section(xen_domid, state->ioservid,
+ section);
+ } else {
+ xen_unmap_memory_section(xen_domid, state->ioservid,
+ section);
+ }
+ }
+ arch_xen_set_memory(state, section, add);
+}
+
+void xen_region_add(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ memory_region_ref(section->mr);
+ xen_set_memory(listener, section, true);
+}
+
+void xen_region_del(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ xen_set_memory(listener, section, false);
+ memory_region_unref(section->mr);
+}
+
+void xen_io_add(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ XenIOState *state = container_of(listener, XenIOState, io_listener);
+ MemoryRegion *mr = section->mr;
+
+ if (mr->ops == &unassigned_io_ops) {
+ return;
+ }
+
+ memory_region_ref(mr);
+
+ xen_map_io_section(xen_domid, state->ioservid, section);
+}
+
+void xen_io_del(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ XenIOState *state = container_of(listener, XenIOState, io_listener);
+ MemoryRegion *mr = section->mr;
+
+ if (mr->ops == &unassigned_io_ops) {
+ return;
+ }
+
+ xen_unmap_io_section(xen_domid, state->ioservid, section);
+
+ memory_region_unref(mr);
+}
+
+void xen_device_realize(DeviceListener *listener,
+ DeviceState *dev)
+{
+ XenIOState *state = container_of(listener, XenIOState, device_listener);
+
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ PCIDevice *pci_dev = PCI_DEVICE(dev);
+ XenPciDevice *xendev = g_new(XenPciDevice, 1);
+
+ xendev->pci_dev = pci_dev;
+ xendev->sbdf = PCI_BUILD_BDF(pci_dev_bus_num(pci_dev),
+ pci_dev->devfn);
+ QLIST_INSERT_HEAD(&state->dev_list, xendev, entry);
+
+ xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
+ }
+}
+
+void xen_device_unrealize(DeviceListener *listener,
+ DeviceState *dev)
+{
+ XenIOState *state = container_of(listener, XenIOState, device_listener);
+
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ PCIDevice *pci_dev = PCI_DEVICE(dev);
+ XenPciDevice *xendev, *next;
+
+ xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
+
+ QLIST_FOREACH_SAFE(xendev, &state->dev_list, entry, next) {
+ if (xendev->pci_dev == pci_dev) {
+ QLIST_REMOVE(xendev, entry);
+ g_free(xendev);
+ break;
+ }
+ }
+ }
+}
+
+MemoryListener xen_io_listener = {
+ .region_add = xen_io_add,
+ .region_del = xen_io_del,
+ .priority = 10,
+};
+
+DeviceListener xen_device_listener = {
+ .realize = xen_device_realize,
+ .unrealize = xen_device_unrealize,
+};
+
+/* get the ioreq packets from share mem */
+static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
+{
+ ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
+
+ if (req->state != STATE_IOREQ_READY) {
+ DPRINTF("I/O request not ready: "
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %u, size: %u\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+ return NULL;
+ }
+
+ xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
+
+ req->state = STATE_IOREQ_INPROCESS;
+ return req;
+}
+
+/* use poll to get the port notification */
+/* ioreq_vec--out,the */
+/* retval--the number of ioreq packet */
+static ioreq_t *cpu_get_ioreq(XenIOState *state)
+{
+ MachineState *ms = MACHINE(qdev_get_machine());
+ unsigned int max_cpus = ms->smp.max_cpus;
+ int i;
+ evtchn_port_t port;
+
+ port = xenevtchn_pending(state->xce_handle);
+ if (port == state->bufioreq_local_port) {
+ timer_mod(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
+ return NULL;
+ }
+
+ if (port != -1) {
+ for (i = 0; i < max_cpus; i++) {
+ if (state->ioreq_local_port[i] == port) {
+ break;
+ }
+ }
+
+ if (i == max_cpus) {
+ hw_error("Fatal error while trying to get io event!\n");
+ }
+
+ /* unmask the wanted port again */
+ xenevtchn_unmask(state->xce_handle, port);
+
+ /* get the io packet from shared memory */
+ state->send_vcpu = i;
+ return cpu_get_ioreq_from_shared_memory(state, i);
+ }
+
+ /* read error or read nothing */
+ return NULL;
+}
+
+static uint32_t do_inp(uint32_t addr, unsigned long size)
+{
+ switch (size) {
+ case 1:
+ return cpu_inb(addr);
+ case 2:
+ return cpu_inw(addr);
+ case 4:
+ return cpu_inl(addr);
+ default:
+ hw_error("inp: bad size: %04x %lx", addr, size);
+ }
+}
+
+static void do_outp(uint32_t addr,
+ unsigned long size, uint32_t val)
+{
+ switch (size) {
+ case 1:
+ return cpu_outb(addr, val);
+ case 2:
+ return cpu_outw(addr, val);
+ case 4:
+ return cpu_outl(addr, val);
+ default:
+ hw_error("outp: bad size: %04x %lx", addr, size);
+ }
+}
+
+/*
+ * Helper functions which read/write an object from/to physical guest
+ * memory, as part of the implementation of an ioreq.
+ *
+ * Equivalent to
+ * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
+ * val, req->size, 0/1)
+ * except without the integer overflow problems.
+ */
+static void rw_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val, int rw)
+{
+ /* Do everything unsigned so overflow just results in a truncated result
+ * and accesses to undesired parts of guest memory, which is up
+ * to the guest */
+ hwaddr offset = (hwaddr)req->size * i;
+ if (req->df) {
+ addr -= offset;
+ } else {
+ addr += offset;
+ }
+ cpu_physical_memory_rw(addr, val, req->size, rw);
+}
+
+static inline void read_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
+{
+ rw_phys_req_item(addr, req, i, val, 0);
+}
+static inline void write_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
+{
+ rw_phys_req_item(addr, req, i, val, 1);
+}
+
+
+void cpu_ioreq_pio(ioreq_t *req)
+{
+ uint32_t i;
+
+ trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
+ if (req->size > sizeof(uint32_t)) {
+ hw_error("PIO: bad size (%u)", req->size);
+ }
+
+ if (req->dir == IOREQ_READ) {
+ if (!req->data_is_ptr) {
+ req->data = do_inp(req->addr, req->size);
+ trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
+ req->size);
+ } else {
+ uint32_t tmp;
+
+ for (i = 0; i < req->count; i++) {
+ tmp = do_inp(req->addr, req->size);
+ write_phys_req_item(req->data, req, i, &tmp);
+ }
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ if (!req->data_is_ptr) {
+ trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
+ req->size);
+ do_outp(req->addr, req->size, req->data);
+ } else {
+ for (i = 0; i < req->count; i++) {
+ uint32_t tmp = 0;
+
+ read_phys_req_item(req->data, req, i, &tmp);
+ do_outp(req->addr, req->size, tmp);
+ }
+ }
+ }
+}
+
+static void cpu_ioreq_move(ioreq_t *req)
+{
+ uint32_t i;
+
+ trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
+ if (req->size > sizeof(req->data)) {
+ hw_error("MMIO: bad size (%u)", req->size);
+ }
+
+ if (!req->data_is_ptr) {
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->addr, req, i, &req->data);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ write_phys_req_item(req->addr, req, i, &req->data);
+ }
+ }
+ } else {
+ uint64_t tmp;
+
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->addr, req, i, &tmp);
+ write_phys_req_item(req->data, req, i, &tmp);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->data, req, i, &tmp);
+ write_phys_req_item(req->addr, req, i, &tmp);
+ }
+ }
+ }
+}
+
+static void cpu_ioreq_config(XenIOState *state, ioreq_t *req)
+{
+ uint32_t sbdf = req->addr >> 32;
+ uint32_t reg = req->addr;
+ XenPciDevice *xendev;
+
+ if (req->size != sizeof(uint8_t) && req->size != sizeof(uint16_t) &&
+ req->size != sizeof(uint32_t)) {
+ hw_error("PCI config access: bad size (%u)", req->size);
+ }
+
+ if (req->count != 1) {
+ hw_error("PCI config access: bad count (%u)", req->count);
+ }
+
+ QLIST_FOREACH(xendev, &state->dev_list, entry) {
+ if (xendev->sbdf != sbdf) {
+ continue;
+ }
+
+ if (!req->data_is_ptr) {
+ if (req->dir == IOREQ_READ) {
+ req->data = pci_host_config_read_common(
+ xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
+ req->size);
+ trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
+ req->size, req->data);
+ } else if (req->dir == IOREQ_WRITE) {
+ trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
+ req->size, req->data);
+ pci_host_config_write_common(
+ xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
+ req->data, req->size);
+ }
+ } else {
+ uint32_t tmp;
+
+ if (req->dir == IOREQ_READ) {
+ tmp = pci_host_config_read_common(
+ xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
+ req->size);
+ trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
+ req->size, tmp);
+ write_phys_req_item(req->data, req, 0, &tmp);
+ } else if (req->dir == IOREQ_WRITE) {
+ read_phys_req_item(req->data, req, 0, &tmp);
+ trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
+ req->size, tmp);
+ pci_host_config_write_common(
+ xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
+ tmp, req->size);
+ }
+ }
+ }
+}
+
+static void handle_ioreq(XenIOState *state, ioreq_t *req)
+{
+ trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
+ if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
+ (req->size < sizeof (target_ulong))) {
+ req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
+ }
+
+ if (req->dir == IOREQ_WRITE)
+ trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
+ switch (req->type) {
+ case IOREQ_TYPE_PIO:
+ cpu_ioreq_pio(req);
+ break;
+ case IOREQ_TYPE_COPY:
+ cpu_ioreq_move(req);
+ break;
+ case IOREQ_TYPE_TIMEOFFSET:
+ break;
+ case IOREQ_TYPE_INVALIDATE:
+ xen_invalidate_map_cache();
+ break;
+ case IOREQ_TYPE_PCI_CONFIG:
+ cpu_ioreq_config(state, req);
+ break;
+ default:
+ arch_handle_ioreq(state, req);
+ }
+ if (req->dir == IOREQ_READ) {
+ trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+ }
+}
+
+static int handle_buffered_iopage(XenIOState *state)
+{
+ buffered_iopage_t *buf_page = state->buffered_io_page;
+ buf_ioreq_t *buf_req = NULL;
+ ioreq_t req;
+ int qw;
+
+ if (!buf_page) {
+ return 0;
+ }
+
+ memset(&req, 0x00, sizeof(req));
+ req.state = STATE_IOREQ_READY;
+ req.count = 1;
+ req.dir = IOREQ_WRITE;
+
+ for (;;) {
+ uint32_t rdptr = buf_page->read_pointer, wrptr;
+
+ xen_rmb();
+ wrptr = buf_page->write_pointer;
+ xen_rmb();
+ if (rdptr != buf_page->read_pointer) {
+ continue;
+ }
+ if (rdptr == wrptr) {
+ break;
+ }
+ buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
+ req.size = 1U << buf_req->size;
+ req.addr = buf_req->addr;
+ req.data = buf_req->data;
+ req.type = buf_req->type;
+ xen_rmb();
+ qw = (req.size == 8);
+ if (qw) {
+ if (rdptr + 1 == wrptr) {
+ hw_error("Incomplete quad word buffered ioreq");
+ }
+ buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
+ IOREQ_BUFFER_SLOT_NUM];
+ req.data |= ((uint64_t)buf_req->data) << 32;
+ xen_rmb();
+ }
+
+ handle_ioreq(state, &req);
+
+ /* Only req.data may get updated by handle_ioreq(), albeit even that
+ * should not happen as such data would never make it to the guest (we
+ * can only usefully see writes here after all).
+ */
+ assert(req.state == STATE_IOREQ_READY);
+ assert(req.count == 1);
+ assert(req.dir == IOREQ_WRITE);
+ assert(!req.data_is_ptr);
+
+ qatomic_add(&buf_page->read_pointer, qw + 1);
+ }
+
+ return req.count;
+}
+
+static void handle_buffered_io(void *opaque)
+{
+ XenIOState *state = opaque;
+
+ if (handle_buffered_iopage(state)) {
+ timer_mod(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
+ } else {
+ timer_del(state->buffered_io_timer);
+ xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
+ }
+}
+
+static void cpu_handle_ioreq(void *opaque)
+{
+ XenIOState *state = opaque;
+ ioreq_t *req = cpu_get_ioreq(state);
+
+ handle_buffered_iopage(state);
+ if (req) {
+ ioreq_t copy = *req;
+
+ xen_rmb();
+ handle_ioreq(state, ©);
+ req->data = copy.data;
+
+ if (req->state != STATE_IOREQ_INPROCESS) {
+ fprintf(stderr, "Badness in I/O request ... not in service?!: "
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %u, size: %u, type: %u\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size, req->type);
+ destroy_hvm_domain(false);
+ return;
+ }
+
+ xen_wmb(); /* Update ioreq contents /then/ update state. */
+
+ /*
+ * We do this before we send the response so that the tools
+ * have the opportunity to pick up on the reset before the
+ * guest resumes and does a hlt with interrupts disabled which
+ * causes Xen to powerdown the domain.
+ */
+ if (runstate_is_running()) {
+ ShutdownCause request;
+
+ if (qemu_shutdown_requested_get()) {
+ destroy_hvm_domain(false);
+ }
+ request = qemu_reset_requested_get();
+ if (request) {
+ qemu_system_reset(request);
+ destroy_hvm_domain(true);
+ }
+ }
+
+ req->state = STATE_IORESP_READY;
+ xenevtchn_notify(state->xce_handle,
+ state->ioreq_local_port[state->send_vcpu]);
+ }
+}
+
+static void xen_main_loop_prepare(XenIOState *state)
+{
+ int evtchn_fd = -1;
+
+ if (state->xce_handle != NULL) {
+ evtchn_fd = xenevtchn_fd(state->xce_handle);
+ }
+
+ state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
+ state);
+
+ if (evtchn_fd != -1) {
+ CPUState *cpu_state;
+
+ DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
+ CPU_FOREACH(cpu_state) {
+ DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
+ __func__, cpu_state->cpu_index, cpu_state);
+ state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
+ }
+ qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
+ }
+}
+
+
+void xen_hvm_change_state_handler(void *opaque, bool running,
+ RunState rstate)
+{
+ XenIOState *state = opaque;
+
+ if (running) {
+ xen_main_loop_prepare(state);
+ }
+
+ xen_set_ioreq_server_state(xen_domid,
+ state->ioservid,
+ (rstate == RUN_STATE_RUNNING));
+}
+
+void xen_exit_notifier(Notifier *n, void *data)
+{
+ XenIOState *state = container_of(n, XenIOState, exit);
+
+ xen_destroy_ioreq_server(xen_domid, state->ioservid);
+
+ xenevtchn_close(state->xce_handle);
+ xs_daemon_close(state->xenstore);
+}
+
+static int xen_map_ioreq_server(XenIOState *state)
+{
+ void *addr = NULL;
+ xenforeignmemory_resource_handle *fres;
+ xen_pfn_t ioreq_pfn;
+ xen_pfn_t bufioreq_pfn;
+ evtchn_port_t bufioreq_evtchn;
+ int rc;
+
+ /*
+ * Attempt to map using the resource API and fall back to normal
+ * foreign mapping if this is not supported.
+ */
+ QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq != 0);
+ QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
+ fres = xenforeignmemory_map_resource(xen_fmem, xen_domid,
+ XENMEM_resource_ioreq_server,
+ state->ioservid, 0, 2,
+ &addr,
+ PROT_READ | PROT_WRITE, 0);
+ if (fres != NULL) {
+ trace_xen_map_resource_ioreq(state->ioservid, addr);
+ state->buffered_io_page = addr;
+ state->shared_page = addr + XC_PAGE_SIZE;
+ } else if (errno != EOPNOTSUPP) {
+ error_report("failed to map ioreq server resources: error %d handle=%p",
+ errno, xen_xc);
+ return -1;
+ }
+
+ rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
+ (state->shared_page == NULL) ?
+ &ioreq_pfn : NULL,
+ (state->buffered_io_page == NULL) ?
+ &bufioreq_pfn : NULL,
+ &bufioreq_evtchn);
+ if (rc < 0) {
+ error_report("failed to get ioreq server info: error %d handle=%p",
+ errno, xen_xc);
+ return rc;
+ }
+
+ if (state->shared_page == NULL) {
+ DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
+
+ state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
+ PROT_READ | PROT_WRITE,
+ 1, &ioreq_pfn, NULL);
+ if (state->shared_page == NULL) {
+ error_report("map shared IO page returned error %d handle=%p",
+ errno, xen_xc);
+ }
+ }
+
+ if (state->buffered_io_page == NULL) {
+ DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
+
+ state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
+ PROT_READ | PROT_WRITE,
+ 1, &bufioreq_pfn,
+ NULL);
+ if (state->buffered_io_page == NULL) {
+ error_report("map buffered IO page returned error %d", errno);
+ return -1;
+ }
+ }
+
+ if (state->shared_page == NULL || state->buffered_io_page == NULL) {
+ return -1;
+ }
+
+ DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
+
+ state->bufioreq_remote_port = bufioreq_evtchn;
+
+ return 0;
+}
+
+void destroy_hvm_domain(bool reboot)
+{
+ xc_interface *xc_handle;
+ int sts;
+ int rc;
+
+ unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
+
+ if (xen_dmod) {
+ rc = xendevicemodel_shutdown(xen_dmod, xen_domid, reason);
+ if (!rc) {
+ return;
+ }
+ if (errno != ENOTTY /* old Xen */) {
+ perror("xendevicemodel_shutdown failed");
+ }
+ /* well, try the old thing then */
+ }
+
+ xc_handle = xc_interface_open(0, 0, 0);
+ if (xc_handle == NULL) {
+ fprintf(stderr, "Cannot acquire xenctrl handle\n");
+ } else {
+ sts = xc_domain_shutdown(xc_handle, xen_domid, reason);
+ if (sts != 0) {
+ fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
+ "sts %d, %s\n", reboot ? "reboot" : "poweroff",
+ sts, strerror(errno));
+ } else {
+ fprintf(stderr, "Issued domain %d %s\n", xen_domid,
+ reboot ? "reboot" : "poweroff");
+ }
+ xc_interface_close(xc_handle);
+ }
+}
+
+void xen_shutdown_fatal_error(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ fprintf(stderr, "Will destroy the domain.\n");
+ /* destroy the domain */
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR);
+}
+
+void xen_register_backend(XenIOState *state)
+{
+ /* Initialize backend core & drivers */
+ if (xen_be_init() != 0) {
+ error_report("xen backend core setup failed");
+ goto err;
+ }
+
+ xen_be_register_common();
+
+ return;
+
+err:
+ error_report("xen hardware virtual machine backend registration failed");
+ exit(1);
+}
+
+void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
+ MemoryListener xen_memory_listener)
+{
+ int i, rc;
+
+ state->xce_handle = xenevtchn_open(NULL, 0);
+ if (state->xce_handle == NULL) {
+ perror("xen: event channel open");
+ goto err;
+ }
+
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ goto err;
+ }
+
+ xen_create_ioreq_server(xen_domid, &state->ioservid);
+
+ state->exit.notify = xen_exit_notifier;
+ qemu_add_exit_notifier(&state->exit);
+
+ /*
+ * Register wake-up support in QMP query-current-machine API
+ */
+ qemu_register_wakeup_support();
+
+ rc = xen_map_ioreq_server(state);
+ if (rc < 0) {
+ goto err;
+ }
+
+ /* Note: cpus is empty at this point in init */
+ state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
+
+ rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
+ if (rc < 0) {
+ error_report("failed to enable ioreq server info: error %d handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+
+ state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
+
+ /* FIXME: how about if we overflow the page here? */
+ for (i = 0; i < max_cpus; i++) {
+ rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
+ xen_vcpu_eport(state->shared_page, i));
+ if (rc == -1) {
+ error_report("shared evtchn %d bind error %d", i, errno);
+ goto err;
+ }
+ state->ioreq_local_port[i] = rc;
+ }
+
+ rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
+ state->bufioreq_remote_port);
+ if (rc == -1) {
+ error_report("buffered evtchn bind error %d", errno);
+ goto err;
+ }
+ state->bufioreq_local_port = rc;
+
+ /* Init RAM management */
+#ifdef XEN_COMPAT_PHYSMAP
+ xen_map_cache_init(xen_phys_offset_to_gaddr, state);
+#else
+ xen_map_cache_init(NULL, state);
+#endif
+
+ qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
+
+ state->memory_listener = xen_memory_listener;
+ memory_listener_register(&state->memory_listener, &address_space_memory);
+
+ state->io_listener = xen_io_listener;
+ memory_listener_register(&state->io_listener, &address_space_io);
+
+ state->device_listener = xen_device_listener;
+ QLIST_INIT(&state->dev_list);
+ device_listener_register(&state->device_listener);
+
+ xen_bus_init();
+
+ return;
+err:
+ error_report("xen hardware virtual machine initialisation failed");
+ exit(1);
+}
diff --git a/include/hw/i386/xen_arch_hvm.h b/include/hw/i386/xen_arch_hvm.h
new file mode 100644
index 0000000000..1000f8f543
--- /dev/null
+++ b/include/hw/i386/xen_arch_hvm.h
@@ -0,0 +1,11 @@
+#ifndef HW_XEN_ARCH_I386_HVM_H
+#define HW_XEN_ARCH_I386_HVM_H
+
+#include <xen/hvm/ioreq.h>
+#include "hw/xen/xen-hvm-common.h"
+
+void arch_handle_ioreq(XenIOState *state, ioreq_t *req);
+void arch_xen_set_memory(XenIOState *state,
+ MemoryRegionSection *section,
+ bool add);
+#endif
diff --git a/include/hw/xen/arch_hvm.h b/include/hw/xen/arch_hvm.h
new file mode 100644
index 0000000000..26674648d8
--- /dev/null
+++ b/include/hw/xen/arch_hvm.h
@@ -0,0 +1,3 @@
+#if defined(TARGET_I386) || defined(TARGET_X86_64)
+#include "hw/i386/xen_arch_hvm.h"
+#endif
diff --git a/include/hw/xen/xen-hvm-common.h b/include/hw/xen/xen-hvm-common.h
new file mode 100644
index 0000000000..4de316e7ad
--- /dev/null
+++ b/include/hw/xen/xen-hvm-common.h
@@ -0,0 +1,98 @@
+#ifndef HW_XEN_HVM_COMMON_H
+#define HW_XEN_HVM_COMMON_H
+
+#include "qemu/osdep.h"
+#include "qemu/units.h"
+
+#include "cpu.h"
+#include "hw/pci/pci.h"
+#include "hw/hw.h"
+#include "hw/xen/xen_common.h"
+#include "sysemu/runstate.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/xen.h"
+#include "sysemu/xen-mapcache.h"
+
+#include <xen/hvm/ioreq.h>
+
+extern MemoryRegion ram_memory;
+extern MemoryListener xen_io_listener;
+extern DeviceListener xen_device_listener;
+
+//#define DEBUG_XEN_HVM
+
+#ifdef DEBUG_XEN_HVM
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
+{
+ return shared_page->vcpu_ioreq[i].vp_eport;
+}
+static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
+{
+ return &shared_page->vcpu_ioreq[vcpu];
+}
+
+#define BUFFER_IO_MAX_DELAY 100
+
+typedef struct XenPhysmap {
+ hwaddr start_addr;
+ ram_addr_t size;
+ const char *name;
+ hwaddr phys_offset;
+
+ QLIST_ENTRY(XenPhysmap) list;
+} XenPhysmap;
+
+typedef struct XenPciDevice {
+ PCIDevice *pci_dev;
+ uint32_t sbdf;
+ QLIST_ENTRY(XenPciDevice) entry;
+} XenPciDevice;
+
+typedef struct XenIOState {
+ ioservid_t ioservid;
+ shared_iopage_t *shared_page;
+ buffered_iopage_t *buffered_io_page;
+ QEMUTimer *buffered_io_timer;
+ CPUState **cpu_by_vcpu_id;
+ /* the evtchn port for polling the notification, */
+ evtchn_port_t *ioreq_local_port;
+ /* evtchn remote and local ports for buffered io */
+ evtchn_port_t bufioreq_remote_port;
+ evtchn_port_t bufioreq_local_port;
+ /* the evtchn fd for polling */
+ xenevtchn_handle *xce_handle;
+ /* which vcpu we are serving */
+ int send_vcpu;
+
+ struct xs_handle *xenstore;
+ MemoryListener memory_listener;
+ MemoryListener io_listener;
+ QLIST_HEAD(, XenPciDevice) dev_list;
+ DeviceListener device_listener;
+
+ Notifier exit;
+} XenIOState;
+
+void xen_exit_notifier(Notifier *n, void *data);
+
+void xen_region_add(MemoryListener *listener, MemoryRegionSection *section);
+void xen_region_del(MemoryListener *listener, MemoryRegionSection *section);
+void xen_io_add(MemoryListener *listener, MemoryRegionSection *section);
+void xen_io_del(MemoryListener *listener, MemoryRegionSection *section);
+void xen_device_realize(DeviceListener *listener, DeviceState *dev);
+void xen_device_unrealize(DeviceListener *listener, DeviceState *dev);
+
+void xen_hvm_change_state_handler(void *opaque, bool running, RunState rstate);
+void xen_register_backend(XenIOState *state);
+void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
+ MemoryListener xen_memory_listener);
+
+void cpu_ioreq_pio(ioreq_t *req);
+#endif /* HW_XEN_HVM_COMMON_H */
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (3 preceding siblings ...)
2022-12-02 2:59 ` [QEMU][PATCH v2 04/11] xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 7:19 ` Philippe Mathieu-Daudé
2022-12-02 2:59 ` [QEMU][PATCH v2 06/11] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure Vikram Garhwal
` (6 subsequent siblings)
11 siblings, 1 reply; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
From: Stefano Stabellini <stefano.stabellini@amd.com>
This is done to prepare for enabling xenpv support for ARM architecture.
On ARM it is possible to have a functioning xenpv machine with only the
PV backends and no IOREQ server. If the IOREQ server creation fails,
continue to the PV backends initialization.
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
---
include/hw/xen/xen_common.h | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
index 77ce17d8a4..6510ac15e0 100644
--- a/include/hw/xen/xen_common.h
+++ b/include/hw/xen/xen_common.h
@@ -467,9 +467,10 @@ static inline void xen_unmap_pcidev(domid_t dom,
{
}
-static inline void xen_create_ioreq_server(domid_t dom,
- ioservid_t *ioservid)
+static inline int xen_create_ioreq_server(domid_t dom,
+ ioservid_t *ioservid)
{
+ return 0;
}
static inline void xen_destroy_ioreq_server(domid_t dom,
@@ -600,8 +601,8 @@ static inline void xen_unmap_pcidev(domid_t dom,
PCI_FUNC(pci_dev->devfn));
}
-static inline void xen_create_ioreq_server(domid_t dom,
- ioservid_t *ioservid)
+static inline int xen_create_ioreq_server(domid_t dom,
+ ioservid_t *ioservid)
{
int rc = xendevicemodel_create_ioreq_server(xen_dmod, dom,
HVM_IOREQSRV_BUFIOREQ_ATOMIC,
@@ -609,12 +610,14 @@ static inline void xen_create_ioreq_server(domid_t dom,
if (rc == 0) {
trace_xen_ioreq_server_create(*ioservid);
- return;
+ return rc;
}
*ioservid = 0;
use_default_ioreq_server = true;
trace_xen_default_ioreq_server();
+
+ return rc;
}
static inline void xen_destroy_ioreq_server(domid_t dom,
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 06/11] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (4 preceding siblings ...)
2022-12-02 2:59 ` [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno Vikram Garhwal
` (5 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
From: Stefano Stabellini <stefano.stabellini@amd.com>
On ARM it is possible to have a functioning xenpv machine with only the
PV backends and no IOREQ server. If the IOREQ server creation fails continue
to the PV backends initialization.
Also, moved the IOREQ registration and mapping subroutine to new function
xen_do_ioreq_register().
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
---
hw/xen/xen-hvm-common.c | 53 ++++++++++++++++++++++++++++-------------
1 file changed, 36 insertions(+), 17 deletions(-)
diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c
index 403b2eebbf..03128e575b 100644
--- a/hw/xen/xen-hvm-common.c
+++ b/hw/xen/xen-hvm-common.c
@@ -777,25 +777,12 @@ err:
exit(1);
}
-void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
- MemoryListener xen_memory_listener)
+static void xen_do_ioreq_register(XenIOState *state,
+ unsigned int max_cpus,
+ MemoryListener xen_memory_listener)
{
int i, rc;
- state->xce_handle = xenevtchn_open(NULL, 0);
- if (state->xce_handle == NULL) {
- perror("xen: event channel open");
- goto err;
- }
-
- state->xenstore = xs_daemon_open();
- if (state->xenstore == NULL) {
- perror("xen: xenstore open");
- goto err;
- }
-
- xen_create_ioreq_server(xen_domid, &state->ioservid);
-
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
@@ -859,10 +846,42 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
QLIST_INIT(&state->dev_list);
device_listener_register(&state->device_listener);
+ return;
+
+err:
+ error_report("xen hardware virtual machine initialisation failed");
+ exit(1);
+}
+
+void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
+ MemoryListener xen_memory_listener)
+{
+ int rc;
+
+ state->xce_handle = xenevtchn_open(NULL, 0);
+ if (state->xce_handle == NULL) {
+ perror("xen: event channel open");
+ goto err;
+ }
+
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ goto err;
+ }
+
+ rc = xen_create_ioreq_server(xen_domid, &state->ioservid);
+ if (!rc) {
+ xen_do_ioreq_register(state, max_cpus, xen_memory_listener);
+ } else {
+ warn_report("xen: failed to create ioreq server");
+ }
+
xen_bus_init();
return;
+
err:
- error_report("xen hardware virtual machine initialisation failed");
+ error_report("xen hardware virtual machine backend registration failed");
exit(1);
}
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (5 preceding siblings ...)
2022-12-02 2:59 ` [QEMU][PATCH v2 06/11] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure Vikram Garhwal
@ 2022-12-02 2:59 ` Vikram Garhwal
2022-12-02 7:27 ` Philippe Mathieu-Daudé
2022-12-02 3:00 ` [QEMU][PATCH v2 08/11] accel/xen/xen-all: export xenstore_record_dm_state Vikram Garhwal
` (4 subsequent siblings)
11 siblings, 1 reply; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 2:59 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
Replace g_malloc with g_new and perror with error_setg_errno.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
---
hw/xen/xen-hvm-common.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c
index 03128e575b..4ba5141fa2 100644
--- a/hw/xen/xen-hvm-common.c
+++ b/hw/xen/xen-hvm-common.c
@@ -34,7 +34,7 @@ void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
trace_xen_ram_alloc(ram_addr, size);
nr_pfn = size >> TARGET_PAGE_BITS;
- pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
+ pfn_list = g_new(xen_pfn_t, nr_pfn);
for (i = 0; i < nr_pfn; i++) {
pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
@@ -717,7 +717,7 @@ void destroy_hvm_domain(bool reboot)
xc_interface *xc_handle;
int sts;
int rc;
-
+ Error *errp = NULL;
unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
if (xen_dmod) {
@@ -726,7 +726,7 @@ void destroy_hvm_domain(bool reboot)
return;
}
if (errno != ENOTTY /* old Xen */) {
- perror("xendevicemodel_shutdown failed");
+ error_setg_errno(&errp, errno, "xendevicemodel_shutdown failed");
}
/* well, try the old thing then */
}
@@ -797,7 +797,7 @@ static void xen_do_ioreq_register(XenIOState *state,
}
/* Note: cpus is empty at this point in init */
- state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
+ state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
if (rc < 0) {
@@ -806,7 +806,7 @@ static void xen_do_ioreq_register(XenIOState *state,
goto err;
}
- state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
+ state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
/* FIXME: how about if we overflow the page here? */
for (i = 0; i < max_cpus; i++) {
@@ -857,16 +857,17 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
MemoryListener xen_memory_listener)
{
int rc;
+ Error *errp = NULL;
state->xce_handle = xenevtchn_open(NULL, 0);
if (state->xce_handle == NULL) {
- perror("xen: event channel open");
+ error_setg_errno(&errp, errno, "xen: event channel open");
goto err;
}
state->xenstore = xs_daemon_open();
if (state->xenstore == NULL) {
- perror("xen: xenstore open");
+ error_setg_errno(&errp, errno, "xen: xenstore open");
goto err;
}
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 08/11] accel/xen/xen-all: export xenstore_record_dm_state
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (6 preceding siblings ...)
2022-12-02 2:59 ` [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno Vikram Garhwal
@ 2022-12-02 3:00 ` Vikram Garhwal
2022-12-02 3:00 ` [QEMU][PATCH v2 09/11] meson.build: do not set have_xen_pci_passthrough for aarch64 targets Vikram Garhwal
` (3 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 3:00 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
xenstore_record_dm_state() will also be used in aarch64 xenpv machine.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
---
accel/xen/xen-all.c | 2 +-
include/hw/xen/xen.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/accel/xen/xen-all.c b/accel/xen/xen-all.c
index 69aa7d018b..276625b78b 100644
--- a/accel/xen/xen-all.c
+++ b/accel/xen/xen-all.c
@@ -100,7 +100,7 @@ void xenstore_store_pv_console_info(int i, Chardev *chr)
}
-static void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
+void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
{
char path[50];
diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h
index afdf9c436a..b966db3c84 100644
--- a/include/hw/xen/xen.h
+++ b/include/hw/xen/xen.h
@@ -19,6 +19,7 @@ enum xen_mode {
extern uint32_t xen_domid;
extern enum xen_mode xen_mode;
extern bool xen_domid_restrict;
+struct xs_handle;
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
int xen_set_pci_link_route(uint8_t link, uint8_t irq);
@@ -31,5 +32,6 @@ qemu_irq *xen_interrupt_controller_init(void);
void xenstore_store_pv_console_info(int i, Chardev *chr);
void xen_register_framebuffer(struct MemoryRegion *mr);
+void xenstore_record_dm_state(struct xs_handle *xs, const char *state);
#endif /* QEMU_HW_XEN_H */
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 09/11] meson.build: do not set have_xen_pci_passthrough for aarch64 targets
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (7 preceding siblings ...)
2022-12-02 3:00 ` [QEMU][PATCH v2 08/11] accel/xen/xen-all: export xenstore_record_dm_state Vikram Garhwal
@ 2022-12-02 3:00 ` Vikram Garhwal
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
` (2 subsequent siblings)
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 3:00 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Paolo Bonzini,
Marc-André Lureau, Daniel P. Berrangé,
Thomas Huth, Philippe Mathieu-Daudé,
open list:All patches CC here
From: Stefano Stabellini <stefano.stabellini@amd.com>
have_xen_pci_passthrough is only used for Xen x86 VMs.
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
meson.build | 2 ++
1 file changed, 2 insertions(+)
diff --git a/meson.build b/meson.build
index 5c6b5a1c75..81d36420f0 100644
--- a/meson.build
+++ b/meson.build
@@ -1469,6 +1469,8 @@ have_xen_pci_passthrough = get_option('xen_pci_passthrough') \
error_message: 'Xen PCI passthrough requested but Xen not enabled') \
.require(targetos == 'linux',
error_message: 'Xen PCI passthrough not available on this platform') \
+ .require(cpu == 'x86' or cpu == 'x86_64',
+ error_message: 'Xen PCI passthrough not available on this platform') \
.allowed()
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (8 preceding siblings ...)
2022-12-02 3:00 ` [QEMU][PATCH v2 09/11] meson.build: do not set have_xen_pci_passthrough for aarch64 targets Vikram Garhwal
@ 2022-12-02 3:00 ` Vikram Garhwal
2022-12-02 5:42 ` Juergen Gross
` (3 more replies)
2022-12-02 3:00 ` [QEMU][PATCH v2 11/11] meson.build: enable xenpv machine build for ARM Vikram Garhwal
2022-12-02 16:07 ` [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Alex Bennée
11 siblings, 4 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 3:00 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Peter Maydell, Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Add a new machine xenpv which creates a IOREQ server to register/connect with
Xen Hypervisor.
Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
TPM emulator and connects to swtpm running on host machine via chardev socket
and support TPM functionalities for a guest domain.
Extra command line for aarch64 xenpv QEMU to connect to swtpm:
-chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
-tpmdev emulator,id=tpm0,chardev=chrtpm \
swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
provides access to TPM functionality over socket, chardev and CUSE interface.
Github repo: https://github.com/stefanberger/swtpm
Example for starting swtpm on host machine:
mkdir /tmp/vtpm2
swtpm socket --tpmstate dir=/tmp/vtpm2 \
--ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
/* Comment about machine name. Will be removed in next version*/
Please reply with the machine name you agree. Below are two possible names:
1. xenpv
2. xenpvh
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
---
hw/arm/meson.build | 2 +
hw/arm/xen_arm.c | 175 ++++++++++++++++++++++++++++++++++
include/hw/arm/xen_arch_hvm.h | 9 ++
include/hw/xen/arch_hvm.h | 2 +
4 files changed, 188 insertions(+)
create mode 100644 hw/arm/xen_arm.c
create mode 100644 include/hw/arm/xen_arch_hvm.h
diff --git a/hw/arm/meson.build b/hw/arm/meson.build
index 92f9f6e000..0cae024374 100644
--- a/hw/arm/meson.build
+++ b/hw/arm/meson.build
@@ -62,5 +62,7 @@ arm_ss.add(when: 'CONFIG_FSL_IMX7', if_true: files('fsl-imx7.c', 'mcimx7d-sabre.
arm_ss.add(when: 'CONFIG_ARM_SMMUV3', if_true: files('smmu-common.c', 'smmuv3.c'))
arm_ss.add(when: 'CONFIG_FSL_IMX6UL', if_true: files('fsl-imx6ul.c', 'mcimx6ul-evk.c'))
arm_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_soc.c'))
+arm_ss.add(when: 'CONFIG_XEN', if_true: files('xen_arm.c'))
+arm_ss.add_all(xen_ss)
hw_arch += {'arm': arm_ss}
diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
new file mode 100644
index 0000000000..bcb8e95f2c
--- /dev/null
+++ b/hw/arm/xen_arm.c
@@ -0,0 +1,175 @@
+/*
+ * QEMU ARM Xen PV Machine
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "qapi/qapi-commands-migration.h"
+#include "hw/boards.h"
+#include "hw/sysbus.h"
+#include "sysemu/block-backend.h"
+#include "sysemu/tpm_backend.h"
+#include "sysemu/sysemu.h"
+#include "hw/xen/xen-legacy-backend.h"
+#include "hw/xen/xen-hvm-common.h"
+#include "sysemu/tpm.h"
+#include "hw/xen/arch_hvm.h"
+
+#define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpv")
+OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
+
+static MemoryListener xen_memory_listener = {
+ .region_add = xen_region_add,
+ .region_del = xen_region_del,
+ .log_start = NULL,
+ .log_stop = NULL,
+ .log_sync = NULL,
+ .log_global_start = NULL,
+ .log_global_stop = NULL,
+ .priority = 10,
+};
+
+struct XenArmState {
+ /*< private >*/
+ MachineState parent;
+
+ XenIOState *state;
+};
+
+void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
+{
+ hw_error("Invalid ioreq type 0x%x\n", req->type);
+
+ return;
+}
+
+void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
+ bool add)
+{
+}
+
+void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
+{
+}
+
+void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
+{
+}
+
+static int xen_init_ioreq(XenIOState *state, unsigned int max_cpus)
+{
+ xen_dmod = xendevicemodel_open(0, 0);
+ if (xen_dmod == NULL) {
+ perror("xen: can't open xen device model interface\n");
+ return -1;
+ }
+
+ xen_xc = xc_interface_open(0, 0, 0);
+ if (xen_xc == NULL) {
+ perror("xen: can't open xen interface\n");
+ return -1;
+ }
+
+ xen_fmem = xenforeignmemory_open(0, 0);
+ if (xen_fmem == NULL) {
+ perror("xen: can't open xen fmem interface\n");
+ xc_interface_close(xen_xc);
+ return -1;
+ }
+
+ xen_register_ioreq(state, max_cpus, xen_memory_listener);
+
+ xen_register_backend(state);
+
+ xenstore_record_dm_state(state->xenstore, "running");
+
+ return 0;
+}
+
+static void xen_enable_tpm(void)
+{
+/* qemu_find_tpm_be is only available when CONFIG_TPM is enabled. */
+#ifdef CONFIG_TPM
+ Error *errp = NULL;
+ DeviceState *dev;
+ SysBusDevice *busdev;
+
+ TPMBackend *be = qemu_find_tpm_be("tpm0");
+ if (be == NULL) {
+ DPRINTF("Couldn't fine the backend for tpm0\n");
+ return;
+ }
+ dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
+ object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
+ object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
+ busdev = SYS_BUS_DEVICE(dev);
+ sysbus_realize_and_unref(busdev, &error_fatal);
+ sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
+
+ DPRINTF("Connected tpmdev at address 0x%lx\n", GUEST_TPM_BASE);
+#endif
+}
+
+static void xen_arm_init(MachineState *machine)
+{
+ XenArmState *xam = XEN_ARM(machine);
+
+ xam->state = g_new0(XenIOState, 1);
+
+ /* For now enable IOREQ only for CONFIG_TPM. */
+#ifdef CONFIG_TPM
+ if (xen_init_ioreq(xam->state, machine->smp.cpus)) {
+ return;
+ }
+#endif
+
+ xen_enable_tpm();
+
+ return;
+}
+
+static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
+{
+
+ MachineClass *mc = MACHINE_CLASS(oc);
+ mc->desc = "Xen Para-virtualized PC";
+ mc->init = xen_arm_init;
+ mc->max_cpus = 1;
+
+#ifdef CONFIG_TPM
+ machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
+#endif
+}
+
+static const TypeInfo xen_arm_machine_type = {
+ .name = TYPE_XEN_ARM,
+ .parent = TYPE_MACHINE,
+ .class_init = xen_arm_machine_class_init,
+ .instance_size = sizeof(XenArmState),
+};
+
+static void xen_arm_machine_register_types(void)
+{
+ type_register_static(&xen_arm_machine_type);
+}
+
+type_init(xen_arm_machine_register_types)
diff --git a/include/hw/arm/xen_arch_hvm.h b/include/hw/arm/xen_arch_hvm.h
new file mode 100644
index 0000000000..8fd645e723
--- /dev/null
+++ b/include/hw/arm/xen_arch_hvm.h
@@ -0,0 +1,9 @@
+#ifndef HW_XEN_ARCH_ARM_HVM_H
+#define HW_XEN_ARCH_ARM_HVM_H
+
+#include <xen/hvm/ioreq.h>
+void arch_handle_ioreq(XenIOState *state, ioreq_t *req);
+void arch_xen_set_memory(XenIOState *state,
+ MemoryRegionSection *section,
+ bool add);
+#endif
diff --git a/include/hw/xen/arch_hvm.h b/include/hw/xen/arch_hvm.h
index 26674648d8..c7c515220d 100644
--- a/include/hw/xen/arch_hvm.h
+++ b/include/hw/xen/arch_hvm.h
@@ -1,3 +1,5 @@
#if defined(TARGET_I386) || defined(TARGET_X86_64)
#include "hw/i386/xen_arch_hvm.h"
+#elif defined(TARGET_ARM) || defined(TARGET_ARM_64)
+#include "hw/arm/xen_arch_hvm.h"
#endif
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* [QEMU][PATCH v2 11/11] meson.build: enable xenpv machine build for ARM
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (9 preceding siblings ...)
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
@ 2022-12-02 3:00 ` Vikram Garhwal
2022-12-02 16:07 ` [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Alex Bennée
11 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 3:00 UTC (permalink / raw)
To: qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Vikram Garhwal,
Paolo Bonzini, Marc-André Lureau, Daniel P. Berrangé,
Thomas Huth, Philippe Mathieu-Daudé,
open list:All patches CC here
Add CONFIG_XEN for aarch64 device to support build for ARM targets.
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
meson.build | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/meson.build b/meson.build
index 81d36420f0..a4965251ab 100644
--- a/meson.build
+++ b/meson.build
@@ -125,7 +125,7 @@ endif
if cpu in ['x86', 'x86_64', 'arm', 'aarch64']
# i386 emulator provides xenpv machine type for multiple architectures
accelerator_targets += {
- 'CONFIG_XEN': ['i386-softmmu', 'x86_64-softmmu'],
+ 'CONFIG_XEN': ['i386-softmmu', 'x86_64-softmmu', 'aarch64-softmmu'],
}
endif
if cpu in ['x86', 'x86_64']
--
2.17.0
^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
@ 2022-12-02 5:42 ` Juergen Gross
2022-12-02 7:30 ` Philippe Mathieu-Daudé
` (2 subsequent siblings)
3 siblings, 0 replies; 28+ messages in thread
From: Juergen Gross @ 2022-12-02 5:42 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Peter Maydell,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
[-- Attachment #1.1.1: Type: text/plain, Size: 1323 bytes --]
On 02.12.22 04:00, Vikram Garhwal wrote:
> Add a new machine xenpv which creates a IOREQ server to register/connect with
> Xen Hypervisor.
>
> Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
> TPM emulator and connects to swtpm running on host machine via chardev socket
> and support TPM functionalities for a guest domain.
>
> Extra command line for aarch64 xenpv QEMU to connect to swtpm:
> -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
> -tpmdev emulator,id=tpm0,chardev=chrtpm \
>
> swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
> provides access to TPM functionality over socket, chardev and CUSE interface.
> Github repo: https://github.com/stefanberger/swtpm
> Example for starting swtpm on host machine:
> mkdir /tmp/vtpm2
> swtpm socket --tpmstate dir=/tmp/vtpm2 \
> --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
>
> /* Comment about machine name. Will be removed in next version*/
> Please reply with the machine name you agree. Below are two possible names:
> 1. xenpv
> 2. xenpvh
Please us xenpvh, as on Arm the guests are more like PVH guests.
This will be needed on x86 to support e.g. virtio for PVH guests, and xenpv
is already taken on x86 for PV guests.
Juergen
[-- Attachment #1.1.2: OpenPGP public key --]
[-- Type: application/pgp-keys, Size: 3149 bytes --]
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 495 bytes --]
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/
2022-12-02 2:59 ` [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/ Vikram Garhwal
@ 2022-12-02 7:07 ` Philippe Mathieu-Daudé
0 siblings, 0 replies; 28+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-12-02 7:07 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Michael S. Tsirkin,
Marcel Apfelbaum, Paolo Bonzini, Richard Henderson,
Eduardo Habkost, Stefano Stabellini, Anthony Perard,
Paul Durrant, open list:All patches CC here
On 2/12/22 03:59, Vikram Garhwal wrote:
> xen-mapcache.c contains common functions which can be used for enabling Xen on
> aarch64 with IOREQ handling. Moving it out from hw/i386/xen to hw/xen to make it
> accessible for both aarch64 and x86.
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
> ---
> hw/i386/meson.build | 1 +
> hw/i386/xen/meson.build | 1 -
> hw/i386/xen/trace-events | 5 -----
> hw/xen/meson.build | 4 ++++
> hw/xen/trace-events | 5 +++++
> hw/{i386 => }/xen/xen-mapcache.c | 0
> 6 files changed, 10 insertions(+), 6 deletions(-)
> rename hw/{i386 => }/xen/xen-mapcache.c (100%)
>
> diff --git a/hw/i386/meson.build b/hw/i386/meson.build
> index 213e2e82b3..cfdbfdcbcb 100644
> --- a/hw/i386/meson.build
> +++ b/hw/i386/meson.build
> @@ -33,5 +33,6 @@ subdir('kvm')
> subdir('xen')
>
> i386_ss.add_all(xenpv_ss)
> +i386_ss.add_all(xen_ss)
Not needed ...
> diff --git a/hw/xen/meson.build b/hw/xen/meson.build
> index ae0ace3046..19d0637c46 100644
> --- a/hw/xen/meson.build
> +++ b/hw/xen/meson.build
> @@ -22,3 +22,7 @@ else
> endif
>
> specific_ss.add_all(when: ['CONFIG_XEN', xen], if_true: xen_specific_ss)
> +
> +xen_ss = ss.source_set()
> +
> +xen_ss.add(when: 'CONFIG_XEN', if_true: files('xen-mapcache.c'))
... because we can simply add in the softmmu_ss list at the beginning
of this file.
Otherwise LGTM.
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server
2022-12-02 2:59 ` [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server Vikram Garhwal
@ 2022-12-02 7:19 ` Philippe Mathieu-Daudé
2022-12-02 10:38 ` Philippe Mathieu-Daudé
0 siblings, 1 reply; 28+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-12-02 7:19 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Stefano Stabellini,
Anthony Perard, Paul Durrant, open list:All patches CC here,
Daniel P. Berrangé,
Thomas Huth
Hi Stefano and Vikram,
On 2/12/22 03:59, Vikram Garhwal wrote:
> From: Stefano Stabellini <stefano.stabellini@amd.com>
>
> This is done to prepare for enabling xenpv support for ARM architecture.
> On ARM it is possible to have a functioning xenpv machine with only the
> PV backends and no IOREQ server. If the IOREQ server creation fails,
> continue to the PV backends initialization.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> ---
> include/hw/xen/xen_common.h | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
> index 77ce17d8a4..6510ac15e0 100644
> --- a/include/hw/xen/xen_common.h
> +++ b/include/hw/xen/xen_common.h
> @@ -467,9 +467,10 @@ static inline void xen_unmap_pcidev(domid_t dom,
> {
> }
>
> -static inline void xen_create_ioreq_server(domid_t dom,
> - ioservid_t *ioservid)
How long are we supposed to maintain this code? Per [*]:
In general XenProject.org supports stable branches for 18 months full
support plus 18 months security fixes. When a new X.Y.0 release is
made there is usually one more release on the to-be-retired stable
branch to mop up any loose patches sitting in the repository at which
point the branch is retired.
4.17 was just released. 4.5 was 7 years ago. IIUC EOL'ed 4 years ago.
[*]
https://wiki.xenproject.org/wiki/Xen_Project_Maintenance_Releases#Stable_Maintenance_Branches
Regards,
Phil.
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno
2022-12-02 2:59 ` [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno Vikram Garhwal
@ 2022-12-02 7:27 ` Philippe Mathieu-Daudé
2022-12-02 8:53 ` Markus Armbruster
0 siblings, 1 reply; 28+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-12-02 7:27 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Stefano Stabellini,
Anthony Perard, Paul Durrant, open list:All patches CC here,
Markus Armbruster
On 2/12/22 03:59, Vikram Garhwal wrote:
> Replace g_malloc with g_new and perror with error_setg_errno.
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> ---
> hw/xen/xen-hvm-common.c | 15 ++++++++-------
> 1 file changed, 8 insertions(+), 7 deletions(-)
> @@ -717,7 +717,7 @@ void destroy_hvm_domain(bool reboot)
> xc_interface *xc_handle;
> int sts;
> int rc;
> -
> + Error *errp = NULL;
> unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
>
> if (xen_dmod) {
> @@ -726,7 +726,7 @@ void destroy_hvm_domain(bool reboot)
> return;
> }
> if (errno != ENOTTY /* old Xen */) {
> - perror("xendevicemodel_shutdown failed");
> + error_setg_errno(&errp, errno, "xendevicemodel_shutdown failed");
See "qapi/error.h":
* = Passing errors around =
*
* Errors get passed to the caller through the conventional @errp
* parameter.
Here you are not passing the error to the caller.
Maybe you are looking for the "qemu/error-report.h" API?
> }
> /* well, try the old thing then */
> }
> @@ -857,16 +857,17 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
> MemoryListener xen_memory_listener)
> {
> int rc;
> + Error *errp = NULL;
>
> state->xce_handle = xenevtchn_open(NULL, 0);
> if (state->xce_handle == NULL) {
> - perror("xen: event channel open");
> + error_setg_errno(&errp, errno, "xen: event channel open");
> goto err;
> }
>
> state->xenstore = xs_daemon_open();
> if (state->xenstore == NULL) {
> - perror("xen: xenstore open");
> + error_setg_errno(&errp, errno, "xen: xenstore open");
> goto err;
> }
>
Ditto.
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
2022-12-02 5:42 ` Juergen Gross
@ 2022-12-02 7:30 ` Philippe Mathieu-Daudé
2022-12-02 14:45 ` Alex Bennée
2022-12-02 14:52 ` Alex Bennée
3 siblings, 0 replies; 28+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-12-02 7:30 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev
Cc: stefano.stabellini, alex.bennee, xen-devel, Peter Maydell,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
On 2/12/22 04:00, Vikram Garhwal wrote:
> Add a new machine xenpv which creates a IOREQ server to register/connect with
> Xen Hypervisor.
>
> Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
> TPM emulator and connects to swtpm running on host machine via chardev socket
> and support TPM functionalities for a guest domain.
>
> Extra command line for aarch64 xenpv QEMU to connect to swtpm:
> -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
> -tpmdev emulator,id=tpm0,chardev=chrtpm \
>
> swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
> provides access to TPM functionality over socket, chardev and CUSE interface.
> Github repo: https://github.com/stefanberger/swtpm
> Example for starting swtpm on host machine:
> mkdir /tmp/vtpm2
> swtpm socket --tpmstate dir=/tmp/vtpm2 \
> --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
>
> /* Comment about machine name. Will be removed in next version*/
> Please reply with the machine name you agree. Below are two possible names:
> 1. xenpv
> 2. xenpvh
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
> ---
> hw/arm/meson.build | 2 +
> hw/arm/xen_arm.c | 175 ++++++++++++++++++++++++++++++++++
> include/hw/arm/xen_arch_hvm.h | 9 ++
> include/hw/xen/arch_hvm.h | 2 +
> 4 files changed, 188 insertions(+)
> create mode 100644 hw/arm/xen_arm.c
> create mode 100644 include/hw/arm/xen_arch_hvm.h
> diff --git a/include/hw/xen/arch_hvm.h b/include/hw/xen/arch_hvm.h
> index 26674648d8..c7c515220d 100644
> --- a/include/hw/xen/arch_hvm.h
> +++ b/include/hw/xen/arch_hvm.h
> @@ -1,3 +1,5 @@
> #if defined(TARGET_I386) || defined(TARGET_X86_64)
> #include "hw/i386/xen_arch_hvm.h"
> +#elif defined(TARGET_ARM) || defined(TARGET_ARM_64)
> +#include "hw/arm/xen_arch_hvm.h"
> #endif
Do we really want to maintain a 32-bit PV machine?
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno
2022-12-02 7:27 ` Philippe Mathieu-Daudé
@ 2022-12-02 8:53 ` Markus Armbruster
2022-12-02 18:20 ` Vikram Garhwal
0 siblings, 1 reply; 28+ messages in thread
From: Markus Armbruster @ 2022-12-02 8:53 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Vikram Garhwal, qemu-dev, stefano.stabellini, alex.bennee,
xen-devel, Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
Philippe Mathieu-Daudé <philmd@linaro.org> writes:
> On 2/12/22 03:59, Vikram Garhwal wrote:
>> Replace g_malloc with g_new and perror with error_setg_errno.
>>
>> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
>> ---
>> hw/xen/xen-hvm-common.c | 15 ++++++++-------
>> 1 file changed, 8 insertions(+), 7 deletions(-)
>
>
>> @@ -717,7 +717,7 @@ void destroy_hvm_domain(bool reboot)
>> xc_interface *xc_handle;
>> int sts;
>> int rc;
>> -
>> + Error *errp = NULL;
>> unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
>>
>> if (xen_dmod) {
>> @@ -726,7 +726,7 @@ void destroy_hvm_domain(bool reboot)
>> return;
>> }
>> if (errno != ENOTTY /* old Xen */) {
>> - perror("xendevicemodel_shutdown failed");
>> + error_setg_errno(&errp, errno, "xendevicemodel_shutdown failed");
>
> See "qapi/error.h":
>
> * = Passing errors around =
> *
> * Errors get passed to the caller through the conventional @errp
> * parameter.
>
> Here you are not passing the error to the caller.
Instead, you're leaking its memory.
> Maybe you are looking for the "qemu/error-report.h" API?
Plausible.
Also, @errp is the conventional name for the Error ** parameter used to
pass errors to the caller. Local Error * variables are usually called
@err or @local_err (I prefer the former).
[...]
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server
2022-12-02 7:19 ` Philippe Mathieu-Daudé
@ 2022-12-02 10:38 ` Philippe Mathieu-Daudé
2022-12-02 21:17 ` Stefano Stabellini
0 siblings, 1 reply; 28+ messages in thread
From: Philippe Mathieu-Daudé @ 2022-12-02 10:38 UTC (permalink / raw)
To: Vikram Garhwal, qemu-dev, Paolo Bonzini
Cc: stefano.stabellini, alex.bennee, xen-devel, Stefano Stabellini,
Anthony Perard, Paul Durrant, open list:All patches CC here,
Daniel P. Berrangé,
Thomas Huth
On 2/12/22 08:19, Philippe Mathieu-Daudé wrote:
> Hi Stefano and Vikram,
>
> On 2/12/22 03:59, Vikram Garhwal wrote:
>> From: Stefano Stabellini <stefano.stabellini@amd.com>
>>
>> This is done to prepare for enabling xenpv support for ARM architecture.
>> On ARM it is possible to have a functioning xenpv machine with only the
>> PV backends and no IOREQ server. If the IOREQ server creation fails,
>> continue to the PV backends initialization.
>>
>> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
>> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
>> ---
>> include/hw/xen/xen_common.h | 13 ++++++++-----
>> 1 file changed, 8 insertions(+), 5 deletions(-)
>>
>> diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
>> index 77ce17d8a4..6510ac15e0 100644
>> --- a/include/hw/xen/xen_common.h
>> +++ b/include/hw/xen/xen_common.h
>> @@ -467,9 +467,10 @@ static inline void xen_unmap_pcidev(domid_t dom,
>> {
>> }
>> -static inline void xen_create_ioreq_server(domid_t dom,
>> - ioservid_t *ioservid)
>
> How long are we supposed to maintain this code? Per [*]:
>
> In general XenProject.org supports stable branches for 18 months full
> support plus 18 months security fixes. When a new X.Y.0 release is
> made there is usually one more release on the to-be-retired stable
> branch to mop up any loose patches sitting in the repository at which
> point the branch is retired.
>
> 4.17 was just released. 4.5 was 7 years ago. IIUC EOL'ed 4 years ago.
>
> [*]
> https://wiki.xenproject.org/wiki/Xen_Project_Maintenance_Releases#Stable_Maintenance_Branches
+Paolo for commit 14efd8d3b5 ("meson, configure: move Xen detection to
meson"):
xen_libs = {
'4.11.0': [ 'xenstore', 'xenctrl', 'xendevicemodel',
'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
'4.10.0': [ 'xenstore', 'xenctrl', 'xendevicemodel',
'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
'4.9.0': [ 'xenstore', 'xenctrl', 'xendevicemodel',
'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
'4.8.0': [ 'xenstore', 'xenctrl', 'xenforeignmemory',
'xengnttab', 'xenevtchn' ],
'4.7.1': [ 'xenstore', 'xenctrl', 'xenforeignmemory',
'xengnttab', 'xenevtchn' ],
'4.6.0': [ 'xenstore', 'xenctrl' ],
'4.5.0': [ 'xenstore', 'xenctrl' ],
'4.2.0': [ 'xenstore', 'xenctrl' ],
}
According to repology for the 'xen' package:
FreeBSD (ports): 4.16
Debian 11: 4.14.5
Fedora 35: 4.16.2
Ubuntu 20.04: 4.11.3
OpenSUSE Leap 15.3: 4.14.1
RHEL 8: ?
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
2022-12-02 5:42 ` Juergen Gross
2022-12-02 7:30 ` Philippe Mathieu-Daudé
@ 2022-12-02 14:45 ` Alex Bennée
2022-12-02 14:52 ` Alex Bennée
3 siblings, 0 replies; 28+ messages in thread
From: Alex Bennée @ 2022-12-02 14:45 UTC (permalink / raw)
To: Vikram Garhwal
Cc: qemu-dev, stefano.stabellini, xen-devel, Peter Maydell,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Vikram Garhwal <vikram.garhwal@amd.com> writes:
> Add a new machine xenpv which creates a IOREQ server to register/connect with
> Xen Hypervisor.
>
> Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
> TPM emulator and connects to swtpm running on host machine via chardev socket
> and support TPM functionalities for a guest domain.
>
> Extra command line for aarch64 xenpv QEMU to connect to swtpm:
> -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
> -tpmdev emulator,id=tpm0,chardev=chrtpm \
>
> swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
> provides access to TPM functionality over socket, chardev and CUSE interface.
> Github repo: https://github.com/stefanberger/swtpm
> Example for starting swtpm on host machine:
> mkdir /tmp/vtpm2
> swtpm socket --tpmstate dir=/tmp/vtpm2 \
> --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
>
> /* Comment about machine name. Will be removed in next version*/
> Please reply with the machine name you agree. Below are two possible names:
> 1. xenpv
> 2. xenpvh
>
> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
> ---
> hw/arm/meson.build | 2 +
> hw/arm/xen_arm.c | 175 ++++++++++++++++++++++++++++++++++
> include/hw/arm/xen_arch_hvm.h | 9 ++
> include/hw/xen/arch_hvm.h | 2 +
> 4 files changed, 188 insertions(+)
> create mode 100644 hw/arm/xen_arm.c
> create mode 100644 include/hw/arm/xen_arch_hvm.h
>
> diff --git a/hw/arm/meson.build b/hw/arm/meson.build
> index 92f9f6e000..0cae024374 100644
> --- a/hw/arm/meson.build
> +++ b/hw/arm/meson.build
> @@ -62,5 +62,7 @@ arm_ss.add(when: 'CONFIG_FSL_IMX7', if_true: files('fsl-imx7.c', 'mcimx7d-sabre.
> arm_ss.add(when: 'CONFIG_ARM_SMMUV3', if_true: files('smmu-common.c', 'smmuv3.c'))
> arm_ss.add(when: 'CONFIG_FSL_IMX6UL', if_true: files('fsl-imx6ul.c', 'mcimx6ul-evk.c'))
> arm_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_soc.c'))
> +arm_ss.add(when: 'CONFIG_XEN', if_true: files('xen_arm.c'))
> +arm_ss.add_all(xen_ss)
>
> hw_arch += {'arm': arm_ss}
> diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
> new file mode 100644
> index 0000000000..bcb8e95f2c
> --- /dev/null
> +++ b/hw/arm/xen_arm.c
> @@ -0,0 +1,175 @@
> +/*
> + * QEMU ARM Xen PV Machine
> + *
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a copy
> + * of this software and associated documentation files (the "Software"), to deal
> + * in the Software without restriction, including without limitation the rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qemu/error-report.h"
> +#include "qapi/qapi-commands-migration.h"
> +#include "hw/boards.h"
> +#include "hw/sysbus.h"
> +#include "sysemu/block-backend.h"
> +#include "sysemu/tpm_backend.h"
> +#include "sysemu/sysemu.h"
> +#include "hw/xen/xen-legacy-backend.h"
> +#include "hw/xen/xen-hvm-common.h"
> +#include "sysemu/tpm.h"
> +#include "hw/xen/arch_hvm.h"
> +
> +#define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpv")
> +OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
> +
> +static MemoryListener xen_memory_listener = {
> + .region_add = xen_region_add,
> + .region_del = xen_region_del,
> + .log_start = NULL,
> + .log_stop = NULL,
> + .log_sync = NULL,
> + .log_global_start = NULL,
> + .log_global_stop = NULL,
> + .priority = 10,
> +};
> +
> +struct XenArmState {
> + /*< private >*/
> + MachineState parent;
> +
> + XenIOState *state;
> +};
> +
> +void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
> +{
> + hw_error("Invalid ioreq type 0x%x\n", req->type);
> +
> + return;
> +}
> +
> +void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
> + bool add)
> +{
> +}
> +
> +void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
> +{
> +}
> +
> +void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
> +{
> +}
> +
This function is only used under CONFIG_TPM so without it you get:
../../hw/arm/xen_arm.c:78:12: error: ‘xen_init_ioreq’ defined but not used [-Werror=unused-function]
78 | static int xen_init_ioreq(XenIOState *state, unsigned int max_cpus)
| ^~~~~~~~~~~~~~
cc1: all warnings being treated as errors
I think I reported this on v1 as well.
> +static int xen_init_ioreq(XenIOState *state, unsigned int max_cpus)
> +{
> + xen_dmod = xendevicemodel_open(0, 0);
> + if (xen_dmod == NULL) {
> + perror("xen: can't open xen device model interface\n");
> + return -1;
> + }
> +
> + xen_xc = xc_interface_open(0, 0, 0);
> + if (xen_xc == NULL) {
> + perror("xen: can't open xen interface\n");
> + return -1;
> + }
> +
> + xen_fmem = xenforeignmemory_open(0, 0);
> + if (xen_fmem == NULL) {
> + perror("xen: can't open xen fmem interface\n");
> + xc_interface_close(xen_xc);
> + return -1;
> + }
> +
> + xen_register_ioreq(state, max_cpus, xen_memory_listener);
> +
> + xen_register_backend(state);
> +
> + xenstore_record_dm_state(state->xenstore, "running");
> +
> + return 0;
> +}
> +
> +static void xen_enable_tpm(void)
> +{
> +/* qemu_find_tpm_be is only available when CONFIG_TPM is enabled. */
> +#ifdef CONFIG_TPM
> + Error *errp = NULL;
> + DeviceState *dev;
> + SysBusDevice *busdev;
> +
> + TPMBackend *be = qemu_find_tpm_be("tpm0");
> + if (be == NULL) {
> + DPRINTF("Couldn't fine the backend for tpm0\n");
> + return;
> + }
> + dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
> + object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
> + object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
> + busdev = SYS_BUS_DEVICE(dev);
> + sysbus_realize_and_unref(busdev, &error_fatal);
> + sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
> +
> + DPRINTF("Connected tpmdev at address 0x%lx\n", GUEST_TPM_BASE);
> +#endif
> +}
> +
> +static void xen_arm_init(MachineState *machine)
> +{
> + XenArmState *xam = XEN_ARM(machine);
> +
> + xam->state = g_new0(XenIOState, 1);
> +
> + /* For now enable IOREQ only for CONFIG_TPM. */
> +#ifdef CONFIG_TPM
> + if (xen_init_ioreq(xam->state, machine->smp.cpus)) {
> + return;
> + }
> +#endif
> +
> + xen_enable_tpm();
In fact this just looks weird - you guard the call to init_ioreq with
ifdefs guarding it but nest those ifdefs in xen_enable_tpm. Surely you
want the IOREQ server support even if you don't have TPM. Otherwise it
should be a hard configure requirement.
> +
> + return;
> +}
> +
> +static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
> +{
> +
> + MachineClass *mc = MACHINE_CLASS(oc);
> + mc->desc = "Xen Para-virtualized PC";
> + mc->init = xen_arm_init;
> + mc->max_cpus = 1;
> +
> +#ifdef CONFIG_TPM
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
> +#endif
> +}
> +
> +static const TypeInfo xen_arm_machine_type = {
> + .name = TYPE_XEN_ARM,
> + .parent = TYPE_MACHINE,
> + .class_init = xen_arm_machine_class_init,
> + .instance_size = sizeof(XenArmState),
> +};
> +
> +static void xen_arm_machine_register_types(void)
> +{
> + type_register_static(&xen_arm_machine_type);
> +}
> +
> +type_init(xen_arm_machine_register_types)
> diff --git a/include/hw/arm/xen_arch_hvm.h b/include/hw/arm/xen_arch_hvm.h
> new file mode 100644
> index 0000000000..8fd645e723
> --- /dev/null
> +++ b/include/hw/arm/xen_arch_hvm.h
> @@ -0,0 +1,9 @@
> +#ifndef HW_XEN_ARCH_ARM_HVM_H
> +#define HW_XEN_ARCH_ARM_HVM_H
> +
> +#include <xen/hvm/ioreq.h>
> +void arch_handle_ioreq(XenIOState *state, ioreq_t *req);
> +void arch_xen_set_memory(XenIOState *state,
> + MemoryRegionSection *section,
> + bool add);
> +#endif
> diff --git a/include/hw/xen/arch_hvm.h b/include/hw/xen/arch_hvm.h
> index 26674648d8..c7c515220d 100644
> --- a/include/hw/xen/arch_hvm.h
> +++ b/include/hw/xen/arch_hvm.h
> @@ -1,3 +1,5 @@
> #if defined(TARGET_I386) || defined(TARGET_X86_64)
> #include "hw/i386/xen_arch_hvm.h"
> +#elif defined(TARGET_ARM) || defined(TARGET_ARM_64)
> +#include "hw/arm/xen_arch_hvm.h"
> #endif
--
Alex Bennée
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
` (2 preceding siblings ...)
2022-12-02 14:45 ` Alex Bennée
@ 2022-12-02 14:52 ` Alex Bennée
2022-12-02 22:13 ` Vikram Garhwal
3 siblings, 1 reply; 28+ messages in thread
From: Alex Bennée @ 2022-12-02 14:52 UTC (permalink / raw)
To: Vikram Garhwal
Cc: qemu-dev, stefano.stabellini, xen-devel, Peter Maydell,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Vikram Garhwal <vikram.garhwal@amd.com> writes:
> Add a new machine xenpv which creates a IOREQ server to register/connect with
> Xen Hypervisor.
>
> Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
> TPM emulator and connects to swtpm running on host machine via chardev socket
> and support TPM functionalities for a guest domain.
>
> Extra command line for aarch64 xenpv QEMU to connect to swtpm:
> -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
> -tpmdev emulator,id=tpm0,chardev=chrtpm \
>
> swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
> provides access to TPM functionality over socket, chardev and CUSE interface.
> Github repo: https://github.com/stefanberger/swtpm
> Example for starting swtpm on host machine:
> mkdir /tmp/vtpm2
> swtpm socket --tpmstate dir=/tmp/vtpm2 \
> --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
<snip>
> +
> +static void xen_enable_tpm(void)
> +{
> +/* qemu_find_tpm_be is only available when CONFIG_TPM is enabled. */
> +#ifdef CONFIG_TPM
> + Error *errp = NULL;
> + DeviceState *dev;
> + SysBusDevice *busdev;
> +
> + TPMBackend *be = qemu_find_tpm_be("tpm0");
> + if (be == NULL) {
> + DPRINTF("Couldn't fine the backend for tpm0\n");
> + return;
> + }
> + dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
> + object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
> + object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
> + busdev = SYS_BUS_DEVICE(dev);
> + sysbus_realize_and_unref(busdev, &error_fatal);
> + sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
Still fails on my aarch64 Debian machine:
FAILED: libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o
cc -Ilibqemu-aarch64-softmmu.fa.p -I. -I../.. -Itarget/arm -I../../target/arm -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/local/include -I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 -I/usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /home/alex/lsrc/qemu.git/linux-headers -isystem linux-headers -iquote . -iquote /home/alex/lsrc/qemu.git -iquote /home/alex/lsrc/qemu.git/include -iquote /home/alex/lsrc/qemu.git/tcg/aarch64 -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -isystem../../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="aarch64-softmmu-config-target.h"' '-DCONFIG_DEVICES="aarch64-softmmu-config-devices.h"' -MD -MQ libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -MF libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o.d -o libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -c ../../hw/arm/xen_arm.c
../../hw/arm/xen_arm.c: In function ‘xen_enable_tpm’:
../../hw/arm/xen_arm.c:126:32: error: ‘GUEST_TPM_BASE’ undeclared (first use in this function); did you mean ‘GUEST_RAM_BASE’?
126 | sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
| ^~~~~~~~~~~~~~
| GUEST_RAM_BASE
../../hw/arm/xen_arm.c:126:32: note: each undeclared identifier is reported only once for each function it appears in
[2082/3246] Compiling C object libqemu-aarch64-softmmu.fa.p/hw_xen_xen-mapcache.c.o
[2083/3246] Compiling C object libqemu-aarch64-softmmu.fa.p/hw_xen_xen-hvm-common.c.o
ninja: build stopped: subcommand failed.
make: *** [Makefile:165: run-ninja] Error 1
> +
> + DPRINTF("Connected tpmdev at address 0x%lx\n", GUEST_TPM_BASE);
> +#endif
> +}
If there is a minimum required version for TPM then it needs to be
picked up by configure.
--
Alex Bennée
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
` (10 preceding siblings ...)
2022-12-02 3:00 ` [QEMU][PATCH v2 11/11] meson.build: enable xenpv machine build for ARM Vikram Garhwal
@ 2022-12-02 16:07 ` Alex Bennée
11 siblings, 0 replies; 28+ messages in thread
From: Alex Bennée @ 2022-12-02 16:07 UTC (permalink / raw)
To: Vikram Garhwal; +Cc: qemu-dev, stefano.stabellini, xen-devel
Vikram Garhwal <vikram.garhwal@amd.com> writes:
> Hi,
> This series add xenpv machine for aarch64. Motivation behind creating xenpv
> machine with IOREQ and TPM was to enable each guest on Xen aarch64 to have it's
> own unique and emulated TPM.
>
> This series does following:
> 1. Moved common xen functionalities from hw/i386/xen to hw/xen/ so those can
> be used for aarch64.
> 2. We added a minimal xenpv arm machine which creates an IOREQ server and
> support TPM.
So I've managed to test the basics:
16:02:33 [root@latte:~] # xl create simple-guest.conf
Parsing config from simple-guest.conf
libxl: info: libxl_create.c:120:libxl__domain_build_info_setdefault: qemu-xen is unavailable, using qemu-xen-traditional instead: No such file or directory
16:02:43 [root@latte:~] # xl list
Name ID Mem VCPUs State Time(s)
Domain-0 0 4096 4 r----- 25.6
xenpv-test-guest 2 4095 2 r----- 14.9
16:02:51 [root@latte:~] # ps ax | grep qemu
578 ? Sl 0:00 /home/alex/lsrc/qemu.git/builds/xen/qemu-system-aarch64 -xen-domid 0 -xen-attach -name dom0 -nographic -M xenpv -daemonize -monitor /dev/null -serial /dev/null -parallel /dev/null -pidfile /var/run/xen/qemu-dom0.pid
2053 pts/2 S+ 0:00 grep --color=auto qemu
However I'm a little lost on how to add HW to this machine. Is it all
via the guest configuration?
I think it would be worthwhile adding some documentation for this
machine to the manual, maybe docs/system/xen/xenpv.rst and then it can
be linked to from the appropriate target-arm.rst.
>
> Also, checkpatch.pl fails for 03/12 and 06/12. These fails are due to
> moving old code to new place which was not QEMU code style compatible.
> No new add code was added.
>
> Regards,
> Vikram
>
> ChangeLog:
> v1 -> v2
> Merged patch 05 and 06.
> 04/12: xen-hvm-common.c:
> 1. Moved xen_be_init() and xen_be_register_common() from
> xen_register_ioreq() to xen_register_backend().
> 2. Changed g_malloc to g_new and perror -> error_setg_errno.
> 3. Created a local subroutine function for Xen_IOREQ_register.
> 4. Fixed build issues with inclusion of xenstore.h.
> 5. Fixed minor errors.
>
> Stefano Stabellini (5):
> hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState
> xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common
> include/hw/xen/xen_common: return error from xen_create_ioreq_server
> hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration
> failure
> meson.build: do not set have_xen_pci_passthrough for aarch64 targets
>
> Vikram Garhwal (6):
> hw/i386/xen/: move xen-mapcache.c to hw/xen/
> hw/i386/xen: rearrange xen_hvm_init_pc
> hw/xen/xen-hvm-common: Use g_new and error_setg_errno
> accel/xen/xen-all: export xenstore_record_dm_state
> hw/arm: introduce xenpv machine
> meson.build: enable xenpv machine build for ARM
>
> accel/xen/xen-all.c | 2 +-
> hw/arm/meson.build | 2 +
> hw/arm/xen_arm.c | 175 +++++
> hw/i386/meson.build | 1 +
> hw/i386/xen/meson.build | 1 -
> hw/i386/xen/trace-events | 19 -
> hw/i386/xen/xen-hvm.c | 1084 +++---------------------------
> hw/xen/meson.build | 7 +
> hw/xen/trace-events | 19 +
> hw/xen/xen-hvm-common.c | 888 ++++++++++++++++++++++++
> hw/{i386 => }/xen/xen-mapcache.c | 0
> include/hw/arm/xen_arch_hvm.h | 9 +
> include/hw/i386/xen_arch_hvm.h | 11 +
> include/hw/xen/arch_hvm.h | 5 +
> include/hw/xen/xen-hvm-common.h | 98 +++
> include/hw/xen/xen.h | 2 +
> include/hw/xen/xen_common.h | 13 +-
> meson.build | 4 +-
> 18 files changed, 1323 insertions(+), 1017 deletions(-)
> create mode 100644 hw/arm/xen_arm.c
> create mode 100644 hw/xen/xen-hvm-common.c
> rename hw/{i386 => }/xen/xen-mapcache.c (100%)
> create mode 100644 include/hw/arm/xen_arch_hvm.h
> create mode 100644 include/hw/i386/xen_arch_hvm.h
> create mode 100644 include/hw/xen/arch_hvm.h
> create mode 100644 include/hw/xen/xen-hvm-common.h
--
Alex Bennée
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno
2022-12-02 8:53 ` Markus Armbruster
@ 2022-12-02 18:20 ` Vikram Garhwal
0 siblings, 0 replies; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 18:20 UTC (permalink / raw)
To: Markus Armbruster, Philippe Mathieu-Daudé
Cc: qemu-dev, stefano.stabellini, alex.bennee, xen-devel,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:All patches CC here
Hi Markus & Philippe,
Thanks for reviewing this one. Please see the question below.
On 12/2/22 12:53 AM, Markus Armbruster wrote:
> Philippe Mathieu-Daudé <philmd@linaro.org> writes:
>
>> On 2/12/22 03:59, Vikram Garhwal wrote:
>>> Replace g_malloc with g_new and perror with error_setg_errno.
>>>
>>> Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
>>> ---
>>> hw/xen/xen-hvm-common.c | 15 ++++++++-------
>>> 1 file changed, 8 insertions(+), 7 deletions(-)
>>
>>> @@ -717,7 +717,7 @@ void destroy_hvm_domain(bool reboot)
>>> xc_interface *xc_handle;
>>> int sts;
>>> int rc;
>>> -
>>> + Error *errp = NULL;
>>> unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
>>>
>>> if (xen_dmod) {
>>> @@ -726,7 +726,7 @@ void destroy_hvm_domain(bool reboot)
>>> return;
>>> }
>>> if (errno != ENOTTY /* old Xen */) {
>>> - perror("xendevicemodel_shutdown failed");
>>> + error_setg_errno(&errp, errno, "xendevicemodel_shutdown failed");
>> See "qapi/error.h":
>>
>> * = Passing errors around =
>> *
>> * Errors get passed to the caller through the conventional @errp
>> * parameter.
>>
>> Here you are not passing the error to the caller.
> Instead, you're leaking its memory.
>
>> Maybe you are looking for the "qemu/error-report.h" API?
> Plausible.
>
> Also, @errp is the conventional name for the Error ** parameter used to
> pass errors to the caller. Local Error * variables are usually called
> @err or @local_err (I prefer the former).
>
> [...]
>
IIUC, error_set_errno() is not okay as it needs to be called with errp
from caller. But error_set(&err, "") is okay with locally defined **err
= NULL;
Is that correct understanding?
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server
2022-12-02 10:38 ` Philippe Mathieu-Daudé
@ 2022-12-02 21:17 ` Stefano Stabellini
0 siblings, 0 replies; 28+ messages in thread
From: Stefano Stabellini @ 2022-12-02 21:17 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Vikram Garhwal, qemu-dev, Paolo Bonzini, stefano.stabellini,
alex.bennee, xen-devel, Stefano Stabellini, Anthony Perard,
Paul Durrant, open list:All patches CC here,
Daniel P. Berrangé,
Thomas Huth
[-- Attachment #1: Type: text/plain, Size: 3506 bytes --]
On Fri, 1 Dec 2022, Philippe Mathieu-Daudé wrote:
> On 2/12/22 08:19, Philippe Mathieu-Daudé wrote:
> > Hi Stefano and Vikram,
> >
> > On 2/12/22 03:59, Vikram Garhwal wrote:
> > > From: Stefano Stabellini <stefano.stabellini@amd.com>
> > >
> > > This is done to prepare for enabling xenpv support for ARM architecture.
> > > On ARM it is possible to have a functioning xenpv machine with only the
> > > PV backends and no IOREQ server. If the IOREQ server creation fails,
> > > continue to the PV backends initialization.
> > >
> > > Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
> > > Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
> > > ---
> > > include/hw/xen/xen_common.h | 13 ++++++++-----
> > > 1 file changed, 8 insertions(+), 5 deletions(-)
> > >
> > > diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
> > > index 77ce17d8a4..6510ac15e0 100644
> > > --- a/include/hw/xen/xen_common.h
> > > +++ b/include/hw/xen/xen_common.h
> > > @@ -467,9 +467,10 @@ static inline void xen_unmap_pcidev(domid_t dom,
> > > {
> > > }
> > > -static inline void xen_create_ioreq_server(domid_t dom,
> > > - ioservid_t *ioservid)
> >
> > How long are we supposed to maintain this code? Per [*]:
> >
> > In general XenProject.org supports stable branches for 18 months full
> > support plus 18 months security fixes. When a new X.Y.0 release is
> > made there is usually one more release on the to-be-retired stable
> > branch to mop up any loose patches sitting in the repository at which
> > point the branch is retired.
> >
> > 4.17 was just released. 4.5 was 7 years ago. IIUC EOL'ed 4 years ago.
Hi Philippe,
So far we have not removed any of the old compatibility code in the xen
headers like xen_common.h. However, you have a point and I think we
could do so going forward. Like you wrote, 4.5 was 7 years ago, I would
be happy to remove the old compatibility code to support ancient
releases and that would simplify the code in the QEMU xen headers quite
a bit.
That said, the change in this patch is orthogonal. This is needed anyway
because we can have very modern Xen builds without IOREQ server
capabilities (it is a kconfig option). So we would still need this patch.
Cheers,
Stefano
> > [*]
> > https://wiki.xenproject.org/wiki/Xen_Project_Maintenance_Releases#Stable_Maintenance_Branches
>
> +Paolo for commit 14efd8d3b5 ("meson, configure: move Xen detection to
> meson"):
>
> xen_libs = {
> '4.11.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory',
> 'xengnttab', 'xenevtchn', 'xentoolcore' ],
> '4.10.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory',
> 'xengnttab', 'xenevtchn', 'xentoolcore' ],
> '4.9.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory',
> 'xengnttab', 'xenevtchn' ],
> '4.8.0': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab',
> 'xenevtchn' ],
> '4.7.1': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab',
> 'xenevtchn' ],
> '4.6.0': [ 'xenstore', 'xenctrl' ],
> '4.5.0': [ 'xenstore', 'xenctrl' ],
> '4.2.0': [ 'xenstore', 'xenctrl' ],
> }
>
> According to repology for the 'xen' package:
>
> FreeBSD (ports): 4.16
> Debian 11: 4.14.5
> Fedora 35: 4.16.2
> Ubuntu 20.04: 4.11.3
> OpenSUSE Leap 15.3: 4.14.1
> RHEL 8: ?
>
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 14:52 ` Alex Bennée
@ 2022-12-02 22:13 ` Vikram Garhwal
2022-12-02 22:36 ` Stefano Stabellini
0 siblings, 1 reply; 28+ messages in thread
From: Vikram Garhwal @ 2022-12-02 22:13 UTC (permalink / raw)
To: Alex Bennée
Cc: qemu-dev, stefano.stabellini, xen-devel, Peter Maydell,
Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Hi Alex,
On 12/2/22 6:52 AM, Alex Bennée wrote:
> Vikram Garhwal <vikram.garhwal@amd.com> writes:
>
>> Add a new machine xenpv which creates a IOREQ server to register/connect with
>> Xen Hypervisor.
>>
>> Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
>> TPM emulator and connects to swtpm running on host machine via chardev socket
>> and support TPM functionalities for a guest domain.
>>
>> Extra command line for aarch64 xenpv QEMU to connect to swtpm:
>> -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
>> -tpmdev emulator,id=tpm0,chardev=chrtpm \
>>
>> swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
>> provides access to TPM functionality over socket, chardev and CUSE interface.
>> Github repo: https://github.com/stefanberger/swtpm
>> Example for starting swtpm on host machine:
>> mkdir /tmp/vtpm2
>> swtpm socket --tpmstate dir=/tmp/vtpm2 \
>> --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
> <snip>
>> +
>> +static void xen_enable_tpm(void)
>> +{
>> +/* qemu_find_tpm_be is only available when CONFIG_TPM is enabled. */
>> +#ifdef CONFIG_TPM
>> + Error *errp = NULL;
>> + DeviceState *dev;
>> + SysBusDevice *busdev;
>> +
>> + TPMBackend *be = qemu_find_tpm_be("tpm0");
>> + if (be == NULL) {
>> + DPRINTF("Couldn't fine the backend for tpm0\n");
>> + return;
>> + }
>> + dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
>> + object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
>> + object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
>> + busdev = SYS_BUS_DEVICE(dev);
>> + sysbus_realize_and_unref(busdev, &error_fatal);
>> + sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
> Still fails on my aarch64 Debian machine:
>
> FAILED: libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o
> cc -Ilibqemu-aarch64-softmmu.fa.p -I. -I../.. -Itarget/arm -I../../target/arm -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1 -I/usr/local/include -I/usr/include/capstone -I/usr/include/spice-server -I/usr/include/spice-1 -I/usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem /home/alex/lsrc/qemu.git/linux-headers -isystem linux-headers -iquote . -iquote /home/alex/lsrc/qemu.git -iquote /home/alex/lsrc/qemu.git/include -iquote /home/alex/lsrc/qemu.git/tcg/aarch64 -pthread -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -fPIE -isystem../../linux-headers -isystemlinux-headers -DNEED_CPU_H '-DCONFIG_TARGET="aarch64-softmmu-config-target.h"' '-DCONFIG_DEVICES="aarch64-softmmu-config-devices.h"' -MD -MQ libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -MF libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o.d -o libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -c ../../hw/arm/xen_arm.c
> ../../hw/arm/xen_arm.c: In function ‘xen_enable_tpm’:
> ../../hw/arm/xen_arm.c:126:32: error: ‘GUEST_TPM_BASE’ undeclared (first use in this function); did you mean ‘GUEST_RAM_BASE’?
> 126 | sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
> | ^~~~~~~~~~~~~~
> | GUEST_RAM_BASE
> ../../hw/arm/xen_arm.c:126:32: note: each undeclared identifier is reported only once for each function it appears in
> [2082/3246] Compiling C object libqemu-aarch64-softmmu.fa.p/hw_xen_xen-mapcache.c.o
> [2083/3246] Compiling C object libqemu-aarch64-softmmu.fa.p/hw_xen_xen-hvm-common.c.o
> ninja: build stopped: subcommand failed.
> make: *** [Makefile:165: run-ninja] Error 1
>
Do you know what Xen version your build env has?
Another way to fix this(as Julien suggested) is by setting this
GUEST_TPM_BASE value via a property or something and user can set it via
command line.
@sstabellini@kernel.org, do you think of any other fix?
>> +
>> + DPRINTF("Connected tpmdev at address 0x%lx\n", GUEST_TPM_BASE);
>> +#endif
>> +}
> If there is a minimum required version for TPM then it needs to be
> picked up by configure.
>
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 22:13 ` Vikram Garhwal
@ 2022-12-02 22:36 ` Stefano Stabellini
2022-12-17 15:26 ` Julien Grall
0 siblings, 1 reply; 28+ messages in thread
From: Stefano Stabellini @ 2022-12-02 22:36 UTC (permalink / raw)
To: Vikram Garhwal
Cc: Alex Bennée, qemu-dev, stefano.stabellini, xen-devel,
Peter Maydell, Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
[-- Attachment #1: Type: text/plain, Size: 5352 bytes --]
On Fri, 2 Dec 2022, Vikram Garhwal wrote:
> On 12/2/22 6:52 AM, Alex Bennée wrote:
> > Vikram Garhwal <vikram.garhwal@amd.com> writes:
> >
> > > Add a new machine xenpv which creates a IOREQ server to register/connect
> > > with
> > > Xen Hypervisor.
> > >
> > > Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device,
> > > adds a
> > > TPM emulator and connects to swtpm running on host machine via chardev
> > > socket
> > > and support TPM functionalities for a guest domain.
> > >
> > > Extra command line for aarch64 xenpv QEMU to connect to swtpm:
> > > -chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
> > > -tpmdev emulator,id=tpm0,chardev=chrtpm \
> > >
> > > swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms
> > > and
> > > provides access to TPM functionality over socket, chardev and CUSE
> > > interface.
> > > Github repo: https://github.com/stefanberger/swtpm
> > > Example for starting swtpm on host machine:
> > > mkdir /tmp/vtpm2
> > > swtpm socket --tpmstate dir=/tmp/vtpm2 \
> > > --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
> > <snip>
> > > +
> > > +static void xen_enable_tpm(void)
> > > +{
> > > +/* qemu_find_tpm_be is only available when CONFIG_TPM is enabled. */
> > > +#ifdef CONFIG_TPM
> > > + Error *errp = NULL;
> > > + DeviceState *dev;
> > > + SysBusDevice *busdev;
> > > +
> > > + TPMBackend *be = qemu_find_tpm_be("tpm0");
> > > + if (be == NULL) {
> > > + DPRINTF("Couldn't fine the backend for tpm0\n");
> > > + return;
> > > + }
> > > + dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
> > > + object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
> > > + object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
> > > + busdev = SYS_BUS_DEVICE(dev);
> > > + sysbus_realize_and_unref(busdev, &error_fatal);
> > > + sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
> > Still fails on my aarch64 Debian machine:
> >
> > FAILED: libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o
> > cc -Ilibqemu-aarch64-softmmu.fa.p -I. -I../.. -Itarget/arm
> > -I../../target/arm -Iqapi -Itrace -Iui -Iui/shader -I/usr/include/pixman-1
> > -I/usr/local/include -I/usr/include/capstone -I/usr/include/spice-server
> > -I/usr/include/spice-1 -I/usr/include/glib-2.0
> > -I/usr/lib/aarch64-linux-gnu/glib-2.0/include -fdiagnostics-color=auto -Wall
> > -Winvalid-pch -Werror -std=gnu11 -O2 -g -isystem
> > /home/alex/lsrc/qemu.git/linux-headers -isystem linux-headers -iquote .
> > -iquote /home/alex/lsrc/qemu.git -iquote /home/alex/lsrc/qemu.git/include
> > -iquote /home/alex/lsrc/qemu.git/tcg/aarch64 -pthread -U_FORTIFY_SOURCE
> > -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> > -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings
> > -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv
> > -Wold-style-declaration -Wold-style-definition -Wtype-limits
> > -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body
> > -Wnested-externs -Wendif-labels -Wexpansion-to-defined
> > -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value
> > -Wno-psabi -fstack-protector-strong -fPIE -isystem../../linux-headers
> > -isystemlinux-headers -DNEED_CPU_H
> > '-DCONFIG_TARGET="aarch64-softmmu-config-target.h"'
> > '-DCONFIG_DEVICES="aarch64-softmmu-config-devices.h"' -MD -MQ
> > libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -MF
> > libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o.d -o
> > libqemu-aarch64-softmmu.fa.p/hw_arm_xen_arm.c.o -c ../../hw/arm/xen_arm.c
> > ../../hw/arm/xen_arm.c: In function ‘xen_enable_tpm’:
> > ../../hw/arm/xen_arm.c:126:32: error: ‘GUEST_TPM_BASE’ undeclared (first
> > use in this function); did you mean ‘GUEST_RAM_BASE’?
> > 126 | sysbus_mmio_map(busdev, 0, GUEST_TPM_BASE);
> > | ^~~~~~~~~~~~~~
> > | GUEST_RAM_BASE
> > ../../hw/arm/xen_arm.c:126:32: note: each undeclared identifier is
> > reported only once for each function it appears in
> > [2082/3246] Compiling C object
> > libqemu-aarch64-softmmu.fa.p/hw_xen_xen-mapcache.c.o
> > [2083/3246] Compiling C object
> > libqemu-aarch64-softmmu.fa.p/hw_xen_xen-hvm-common.c.o
> > ninja: build stopped: subcommand failed.
> > make: *** [Makefile:165: run-ninja] Error 1
> >
> Do you know what Xen version your build env has?
I think Alex is just building against upstream Xen. GUEST_TPM_BASE is
not defined there yet. I think we would need to introduce in
xen_common.h something like:
#ifndef GUEST_TPM_BASE
#define GUEST_TPM_BASE 0x0c000000
#endif
We already have similar code in xen_common.h for other things. Also, it
would be best to get GUEST_TPM_BASE defined upstream in Xen first.
> Another way to fix this(as Julien suggested) is by setting this GUEST_TPM_BASE
> value via a property or something and user can set it via command line.
>
> @sstabellini@kernel.org, do you think of any other fix?
Setting the TPM address from the command line is nice and preferable to
hardcoding the value in xen_common.h. It comes with the challenge that
it is not very scalable (imagine we have a dozen emulated devices) but
for now it is fine and a good way to start if you can arrange it.
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-02 22:36 ` Stefano Stabellini
@ 2022-12-17 15:26 ` Julien Grall
2022-12-19 13:28 ` Alex Bennée
0 siblings, 1 reply; 28+ messages in thread
From: Julien Grall @ 2022-12-17 15:26 UTC (permalink / raw)
To: Stefano Stabellini, Vikram Garhwal
Cc: Alex Bennée, qemu-dev, stefano.stabellini, xen-devel,
Peter Maydell, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Hi,
On 02/12/2022 22:36, Stefano Stabellini wrote:
>> Do you know what Xen version your build env has?
>
> I think Alex is just building against upstream Xen. GUEST_TPM_BASE is
> not defined there yet. I think we would need to introduce in
> xen_common.h something like:
>
> #ifndef GUEST_TPM_BASE
> #define GUEST_TPM_BASE 0x0c000000
> #endif
I think this would be a big mistake to add the two lines above in QEMU.
Libxl is responsible for creating the domain and generating the firwmare
tables. Any mismatch of values will be a real pain to debug.
Even if...
>
> We already have similar code in xen_common.h for other things. Also, it
> would be best to get GUEST_TPM_BASE defined upstream in Xen first.
... we introduce upstream first, the guest layout is not part of the
stable ABI and therefore could change from release to release.
>
>
>> Another way to fix this(as Julien suggested) is by setting this GUEST_TPM_BASE
>> value via a property or something and user can set it via command line.
>>
>> @sstabellini@kernel.org, do you think of any other fix?
>
> Setting the TPM address from the command line is nice and preferable to
> hardcoding the value in xen_common.h. It comes with the challenge that
> it is not very scalable (imagine we have a dozen emulated devices) but
> for now it is fine and a good way to start if you can arrange it.
It is not clear which one you think is not scalable. If this is the
command line option approach, then I think this is unrealistic to ask
every user to rebuild there QEMU just because the guest layout has changed.
Today the rebuild may only be necessary when switching to a new release.
But in the future we may imagine a per-domain layout (e.g. for legacy
purpose). So you will now need to request the user to have one QEMU
built per domain.
How is that scalable?
Cheers,
--
Julien Grall
^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine
2022-12-17 15:26 ` Julien Grall
@ 2022-12-19 13:28 ` Alex Bennée
0 siblings, 0 replies; 28+ messages in thread
From: Alex Bennée @ 2022-12-19 13:28 UTC (permalink / raw)
To: Julien Grall
Cc: Stefano Stabellini, Vikram Garhwal, qemu-dev, stefano.stabellini,
xen-devel, Peter Maydell, Anthony Perard, Paul Durrant,
open list:ARM TCG CPUs, open list:All patches CC here
Julien Grall <julien@xen.org> writes:
> Hi,
>
> On 02/12/2022 22:36, Stefano Stabellini wrote:
>>> Do you know what Xen version your build env has?
>> I think Alex is just building against upstream Xen. GUEST_TPM_BASE
>> is
>> not defined there yet. I think we would need to introduce in
>> xen_common.h something like:
>> #ifndef GUEST_TPM_BASE
>> #define GUEST_TPM_BASE 0x0c000000
>> #endif
>
> I think this would be a big mistake to add the two lines above in QEMU.
>
> Libxl is responsible for creating the domain and generating the
> firwmare tables. Any mismatch of values will be a real pain to debug.
>
> Even if...
>
>> We already have similar code in xen_common.h for other things.
>> Also, it
>> would be best to get GUEST_TPM_BASE defined upstream in Xen first.
>
> ... we introduce upstream first, the guest layout is not part of the
> stable ABI and therefore could change from release to release.
>
>>
>>> Another way to fix this(as Julien suggested) is by setting this GUEST_TPM_BASE
>>> value via a property or something and user can set it via command line.
>>>
>>> @sstabellini@kernel.org, do you think of any other fix?
>> Setting the TPM address from the command line is nice and preferable
>> to
>> hardcoding the value in xen_common.h. It comes with the challenge that
>> it is not very scalable (imagine we have a dozen emulated devices) but
>> for now it is fine and a good way to start if you can arrange it.
>
> It is not clear which one you think is not scalable. If this is the
> command line option approach, then I think this is unrealistic to ask
> every user to rebuild there QEMU just because the guest layout has
> changed.
>
> Today the rebuild may only be necessary when switching to a new
> release. But in the future we may imagine a per-domain layout (e.g.
> for legacy purpose). So you will now need to request the user to have
> one QEMU built per domain.
I agree if this is something that can change it needs to be configured
from the command line or somehow otherwise gleaned from the source of
truth. Isn't this information available via XenStore? Isn't that what
Viresh has to do for all the VirtIO devices he's adding to libxl?
A default value for the option could be done I guess.
>
> How is that scalable?
>
> Cheers,
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
^ permalink raw reply [flat|nested] 28+ messages in thread
end of thread, other threads:[~2022-12-19 13:31 UTC | newest]
Thread overview: 28+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-12-02 2:59 [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 01/11] hw/i386/xen/: move xen-mapcache.c to hw/xen/ Vikram Garhwal
2022-12-02 7:07 ` Philippe Mathieu-Daudé
2022-12-02 2:59 ` [QEMU][PATCH v2 02/11] hw/i386/xen: rearrange xen_hvm_init_pc Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 03/11] hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 04/11] xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 05/11] include/hw/xen/xen_common: return error from xen_create_ioreq_server Vikram Garhwal
2022-12-02 7:19 ` Philippe Mathieu-Daudé
2022-12-02 10:38 ` Philippe Mathieu-Daudé
2022-12-02 21:17 ` Stefano Stabellini
2022-12-02 2:59 ` [QEMU][PATCH v2 06/11] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure Vikram Garhwal
2022-12-02 2:59 ` [QEMU][PATCH v2 07/11] hw/xen/xen-hvm-common: Use g_new and error_setg_errno Vikram Garhwal
2022-12-02 7:27 ` Philippe Mathieu-Daudé
2022-12-02 8:53 ` Markus Armbruster
2022-12-02 18:20 ` Vikram Garhwal
2022-12-02 3:00 ` [QEMU][PATCH v2 08/11] accel/xen/xen-all: export xenstore_record_dm_state Vikram Garhwal
2022-12-02 3:00 ` [QEMU][PATCH v2 09/11] meson.build: do not set have_xen_pci_passthrough for aarch64 targets Vikram Garhwal
2022-12-02 3:00 ` [QEMU][PATCH v2 10/11] hw/arm: introduce xenpv machine Vikram Garhwal
2022-12-02 5:42 ` Juergen Gross
2022-12-02 7:30 ` Philippe Mathieu-Daudé
2022-12-02 14:45 ` Alex Bennée
2022-12-02 14:52 ` Alex Bennée
2022-12-02 22:13 ` Vikram Garhwal
2022-12-02 22:36 ` Stefano Stabellini
2022-12-17 15:26 ` Julien Grall
2022-12-19 13:28 ` Alex Bennée
2022-12-02 3:00 ` [QEMU][PATCH v2 11/11] meson.build: enable xenpv machine build for ARM Vikram Garhwal
2022-12-02 16:07 ` [QEMU][PATCH v2 00/11] Introduce xenpv machine for arm architecture Alex Bennée
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