From: Jagannathan Raman <jag.raman@oracle.com>
To: qemu-devel@nongnu.org
Cc: elena.ufimtseva@oracle.com, fam@euphon.net,
swapnil.ingle@nutanix.com, john.g.johnson@oracle.com,
kraxel@redhat.com, jag.raman@oracle.com, quintela@redhat.com,
mst@redhat.com, armbru@redhat.com, kanth.ghatraju@oracle.com,
felipe@nutanix.com, thuth@redhat.com, ehabkost@redhat.com,
konrad.wilk@oracle.com, dgilbert@redhat.com,
alex.williamson@redhat.com, stefanha@redhat.com,
thanos.makatos@nutanix.com, kwolf@redhat.com,
berrange@redhat.com, mreitz@redhat.com,
ross.lagerwall@citrix.com, marcandre.lureau@gmail.com,
pbonzini@redhat.com
Subject: [PATCH v19 06/20] multi-process: setup a machine object for remote device process
Date: Thu, 14 Jan 2021 10:40:01 -0500 [thread overview]
Message-ID: <be090f3335dcb90d90d0c81a8a63188067d22378.1610638428.git.jag.raman@oracle.com> (raw)
In-Reply-To: <cover.1610638428.git.jag.raman@oracle.com>
In-Reply-To: <cover.1610638428.git.jag.raman@oracle.com>
x-remote-machine object sets up various subsystems of the remote
device process. Instantiate PCI host bridge object and initialize RAM, IO &
PCI memory regions.
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
include/hw/pci-host/remote.h | 1 +
include/hw/remote/machine.h | 27 +++++++++++++++++
hw/remote/machine.c | 70 ++++++++++++++++++++++++++++++++++++++++++++
MAINTAINERS | 2 ++
hw/meson.build | 1 +
hw/remote/meson.build | 5 ++++
6 files changed, 106 insertions(+)
create mode 100644 include/hw/remote/machine.h
create mode 100644 hw/remote/machine.c
create mode 100644 hw/remote/meson.build
diff --git a/include/hw/pci-host/remote.h b/include/hw/pci-host/remote.h
index 06b8a83..3dcf6aa 100644
--- a/include/hw/pci-host/remote.h
+++ b/include/hw/pci-host/remote.h
@@ -24,6 +24,7 @@ struct RemotePCIHost {
MemoryRegion *mr_pci_mem;
MemoryRegion *mr_sys_io;
+ MemoryRegion *mr_sys_mem;
};
#endif
diff --git a/include/hw/remote/machine.h b/include/hw/remote/machine.h
new file mode 100644
index 0000000..bdfbca4
--- /dev/null
+++ b/include/hw/remote/machine.h
@@ -0,0 +1,27 @@
+/*
+ * Remote machine configuration
+ *
+ * Copyright © 2018, 2021 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef REMOTE_MACHINE_H
+#define REMOTE_MACHINE_H
+
+#include "qom/object.h"
+#include "hw/boards.h"
+#include "hw/pci-host/remote.h"
+
+struct RemoteMachineState {
+ MachineState parent_obj;
+
+ RemotePCIHost *host;
+};
+
+#define TYPE_REMOTE_MACHINE "x-remote-machine"
+OBJECT_DECLARE_SIMPLE_TYPE(RemoteMachineState, REMOTE_MACHINE)
+
+#endif
diff --git a/hw/remote/machine.c b/hw/remote/machine.c
new file mode 100644
index 0000000..9519a6c
--- /dev/null
+++ b/hw/remote/machine.c
@@ -0,0 +1,70 @@
+/*
+ * Machine for remote device
+ *
+ * This machine type is used by the remote device process in multi-process
+ * QEMU. QEMU device models depend on parent busses, interrupt controllers,
+ * memory regions, etc. The remote machine type offers this environment so
+ * that QEMU device models can be used as remote devices.
+ *
+ * Copyright © 2018, 2021 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+
+#include "hw/remote/machine.h"
+#include "exec/address-spaces.h"
+#include "exec/memory.h"
+#include "qapi/error.h"
+
+static void remote_machine_init(MachineState *machine)
+{
+ MemoryRegion *system_memory, *system_io, *pci_memory;
+ RemoteMachineState *s = REMOTE_MACHINE(machine);
+ RemotePCIHost *rem_host;
+
+ system_memory = get_system_memory();
+ system_io = get_system_io();
+
+ pci_memory = g_new(MemoryRegion, 1);
+ memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
+
+ rem_host = REMOTE_PCIHOST(qdev_new(TYPE_REMOTE_PCIHOST));
+
+ rem_host->mr_pci_mem = pci_memory;
+ rem_host->mr_sys_mem = system_memory;
+ rem_host->mr_sys_io = system_io;
+
+ s->host = rem_host;
+
+ object_property_add_child(OBJECT(s), "remote-pcihost", OBJECT(rem_host));
+ memory_region_add_subregion_overlap(system_memory, 0x0, pci_memory, -1);
+
+ qdev_realize(DEVICE(rem_host), sysbus_get_default(), &error_fatal);
+}
+
+static void remote_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+
+ mc->init = remote_machine_init;
+ mc->desc = "Experimental remote machine";
+}
+
+static const TypeInfo remote_machine = {
+ .name = TYPE_REMOTE_MACHINE,
+ .parent = TYPE_MACHINE,
+ .instance_size = sizeof(RemoteMachineState),
+ .class_init = remote_machine_class_init,
+};
+
+static void remote_machine_register_types(void)
+{
+ type_register_static(&remote_machine);
+}
+
+type_init(remote_machine_register_types);
diff --git a/MAINTAINERS b/MAINTAINERS
index 45b999a..09aea01 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3189,6 +3189,8 @@ F: docs/devel/multi-process.rst
F: docs/multi-process.rst
F: hw/pci-host/remote.c
F: include/hw/pci-host/remote.h
+F: hw/remote/machine.c
+F: include/hw/remote/machine.h
Build and test automation
-------------------------
diff --git a/hw/meson.build b/hw/meson.build
index 010de72..e615d72 100644
--- a/hw/meson.build
+++ b/hw/meson.build
@@ -56,6 +56,7 @@ subdir('moxie')
subdir('nios2')
subdir('openrisc')
subdir('ppc')
+subdir('remote')
subdir('riscv')
subdir('rx')
subdir('s390x')
diff --git a/hw/remote/meson.build b/hw/remote/meson.build
new file mode 100644
index 0000000..197b038
--- /dev/null
+++ b/hw/remote/meson.build
@@ -0,0 +1,5 @@
+remote_ss = ss.source_set()
+
+remote_ss.add(when: 'CONFIG_MULTIPROCESS', if_true: files('machine.c'))
+
+softmmu_ss.add_all(when: 'CONFIG_MULTIPROCESS', if_true: remote_ss)
--
1.8.3.1
next prev parent reply other threads:[~2021-01-14 15:54 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-14 15:39 [PATCH v19 00/20] Initial support for multi-process Qemu Jagannathan Raman
2021-01-14 15:39 ` [PATCH v19 01/20] multi-process: add the concept description to docs/devel/qemu-multiprocess Jagannathan Raman
2021-01-14 15:39 ` [PATCH v19 02/20] multi-process: add configure and usage information Jagannathan Raman
2021-01-14 15:39 ` [PATCH v19 03/20] memory: alloc RAM from file at offset Jagannathan Raman
2021-01-14 15:39 ` [PATCH v19 04/20] multi-process: Add config option for multi-process QEMU Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 05/20] multi-process: setup PCI host bridge for remote device Jagannathan Raman
2021-01-14 15:40 ` Jagannathan Raman [this message]
2021-01-14 15:40 ` [PATCH v19 07/20] io: add qio_channel_writev_full_all helper Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 08/20] io: add qio_channel_readv_full_all_eof & qio_channel_readv_full_all helpers Jagannathan Raman
2021-01-14 16:27 ` Stefan Hajnoczi
2021-01-14 17:55 ` Jag Raman
2021-01-14 18:00 ` Daniel P. Berrangé
2021-01-14 18:24 ` Jag Raman
2021-01-15 9:20 ` Stefan Hajnoczi
2021-01-15 13:46 ` Jag Raman
2021-01-15 18:19 ` Jag Raman
2021-01-18 16:35 ` Stefan Hajnoczi
2021-01-14 15:40 ` [PATCH v19 09/20] multi-process: define MPQemuMsg format and transmission functions Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 10/20] multi-process: Initialize message handler in remote device Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 11/20] multi-process: Associate fd of a PCIDevice with its object Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 12/20] multi-process: setup memory manager for remote device Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 13/20] multi-process: introduce proxy object Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 14/20] multi-process: add proxy communication functions Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 15/20] multi-process: Forward PCI config space acceses to the remote process Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 16/20] multi-process: PCI BAR read/write handling for proxy & remote endpoints Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 17/20] multi-process: Synchronize remote memory Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 18/20] multi-process: create IOHUB object to handle irq Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 19/20] multi-process: Retrieve PCI info from remote process Jagannathan Raman
2021-01-14 15:40 ` [PATCH v19 20/20] multi-process: perform device reset in the " Jagannathan Raman
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