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qemu-kvm/SOURCES/kvm-vfio-container-Move-spa...

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From 3ba43cbc5b096feed6272e070cf152d5fc74df01 Mon Sep 17 00:00:00 2001
From: Eric Auger <eric.auger@redhat.com>
Date: Thu, 2 Nov 2023 15:12:32 +0800
Subject: [PATCH 007/101] vfio/container: Move space field to base container
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Eric Auger <eric.auger@redhat.com>
RH-MergeRequest: 211: IOMMUFD backend backport
RH-Jira: RHEL-19302 RHEL-21057
RH-Acked-by: Cédric Le Goater <clg@redhat.com>
RH-Acked-by: Sebastian Ott <sebott@redhat.com>
RH-Commit: [6/67] b0aa17d9ec4588bd64373452a30306e826234d0b (eauger1/centos-qemu-kvm)
Move the space field to the base object. Also the VFIOAddressSpace
now contains a list of base containers.
No functional change intended.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
(cherry picked from commit e5597063386a0c76308ad16da31726d23f489945)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
hw/ppc/spapr_pci_vfio.c | 10 +++++-----
hw/vfio/common.c | 4 ++--
hw/vfio/container-base.c | 6 +++++-
hw/vfio/container.c | 18 ++++++++----------
include/hw/vfio/vfio-common.h | 8 --------
include/hw/vfio/vfio-container-base.h | 9 +++++++++
6 files changed, 29 insertions(+), 26 deletions(-)
diff --git a/hw/ppc/spapr_pci_vfio.c b/hw/ppc/spapr_pci_vfio.c
index f283f7e38d..d1d07bec46 100644
--- a/hw/ppc/spapr_pci_vfio.c
+++ b/hw/ppc/spapr_pci_vfio.c
@@ -84,27 +84,27 @@ static int vfio_eeh_container_op(VFIOContainer *container, uint32_t op)
static VFIOContainer *vfio_eeh_as_container(AddressSpace *as)
{
VFIOAddressSpace *space = vfio_get_address_space(as);
- VFIOContainer *container = NULL;
+ VFIOContainerBase *bcontainer = NULL;
if (QLIST_EMPTY(&space->containers)) {
/* No containers to act on */
goto out;
}
- container = QLIST_FIRST(&space->containers);
+ bcontainer = QLIST_FIRST(&space->containers);
- if (QLIST_NEXT(container, next)) {
+ if (QLIST_NEXT(bcontainer, next)) {
/*
* We don't yet have logic to synchronize EEH state across
* multiple containers
*/
- container = NULL;
+ bcontainer = NULL;
goto out;
}
out:
vfio_put_address_space(space);
- return container;
+ return container_of(bcontainer, VFIOContainer, bcontainer);
}
static bool vfio_eeh_as_ok(AddressSpace *as)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 43580bcc43..1d8202537e 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -145,7 +145,7 @@ void vfio_unblock_multiple_devices_migration(void)
bool vfio_viommu_preset(VFIODevice *vbasedev)
{
- return vbasedev->container->space->as != &address_space_memory;
+ return vbasedev->container->bcontainer.space->as != &address_space_memory;
}
static void vfio_set_migration_error(int err)
@@ -922,7 +922,7 @@ static void vfio_dirty_tracking_init(VFIOContainer *container,
dirty.container = container;
memory_listener_register(&dirty.listener,
- container->space->as);
+ container->bcontainer.space->as);
*ranges = dirty.ranges;
diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
index 20bcb9669a..3933391e0d 100644
--- a/hw/vfio/container-base.c
+++ b/hw/vfio/container-base.c
@@ -31,9 +31,11 @@ int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
return bcontainer->ops->dma_unmap(bcontainer, iova, size, iotlb);
}
-void vfio_container_init(VFIOContainerBase *bcontainer, const VFIOIOMMUOps *ops)
+void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space,
+ const VFIOIOMMUOps *ops)
{
bcontainer->ops = ops;
+ bcontainer->space = space;
QLIST_INIT(&bcontainer->giommu_list);
}
@@ -41,6 +43,8 @@ void vfio_container_destroy(VFIOContainerBase *bcontainer)
{
VFIOGuestIOMMU *giommu, *tmp;
+ QLIST_REMOVE(bcontainer, next);
+
QLIST_FOREACH_SAFE(giommu, &bcontainer->giommu_list, giommu_next, tmp) {
memory_region_unregister_iommu_notifier(
MEMORY_REGION(giommu->iommu_mr), &giommu->n);
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 133d3c8f5c..f12fcb6fe1 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -514,7 +514,8 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
* details once we know which type of IOMMU we are using.
*/
- QLIST_FOREACH(container, &space->containers, next) {
+ QLIST_FOREACH(bcontainer, &space->containers, next) {
+ container = container_of(bcontainer, VFIOContainer, bcontainer);
if (!ioctl(group->fd, VFIO_GROUP_SET_CONTAINER, &container->fd)) {
ret = vfio_ram_block_discard_disable(container, true);
if (ret) {
@@ -550,7 +551,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
}
container = g_malloc0(sizeof(*container));
- container->space = space;
container->fd = fd;
container->error = NULL;
container->dirty_pages_supported = false;
@@ -558,7 +558,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
container->iova_ranges = NULL;
QLIST_INIT(&container->vrdl_list);
bcontainer = &container->bcontainer;
- vfio_container_init(bcontainer, &vfio_legacy_ops);
+ vfio_container_init(bcontainer, space, &vfio_legacy_ops);
ret = vfio_init_container(container, group->fd, errp);
if (ret) {
@@ -613,14 +613,14 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
vfio_kvm_device_add_group(group);
QLIST_INIT(&container->group_list);
- QLIST_INSERT_HEAD(&space->containers, container, next);
+ QLIST_INSERT_HEAD(&space->containers, bcontainer, next);
group->container = container;
QLIST_INSERT_HEAD(&container->group_list, group, container_next);
container->listener = vfio_memory_listener;
- memory_listener_register(&container->listener, container->space->as);
+ memory_listener_register(&container->listener, bcontainer->space->as);
if (container->error) {
ret = -1;
@@ -634,7 +634,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
return 0;
listener_release_exit:
QLIST_REMOVE(group, container_next);
- QLIST_REMOVE(container, next);
+ QLIST_REMOVE(bcontainer, next);
vfio_kvm_device_del_group(group);
memory_listener_unregister(&container->listener);
if (container->iommu_type == VFIO_SPAPR_TCE_v2_IOMMU ||
@@ -684,9 +684,7 @@ static void vfio_disconnect_container(VFIOGroup *group)
}
if (QLIST_EMPTY(&container->group_list)) {
- VFIOAddressSpace *space = container->space;
-
- QLIST_REMOVE(container, next);
+ VFIOAddressSpace *space = bcontainer->space;
vfio_container_destroy(bcontainer);
@@ -707,7 +705,7 @@ static VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp)
QLIST_FOREACH(group, &vfio_group_list, next) {
if (group->groupid == groupid) {
/* Found it. Now is it already in the right context? */
- if (group->container->space->as == as) {
+ if (group->container->bcontainer.space->as == as) {
return group;
} else {
error_setg(errp, "group %d used in multiple address spaces",
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 6be082b8f2..bd4de6cb3a 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -73,17 +73,10 @@ typedef struct VFIOMigration {
bool initial_data_sent;
} VFIOMigration;
-typedef struct VFIOAddressSpace {
- AddressSpace *as;
- QLIST_HEAD(, VFIOContainer) containers;
- QLIST_ENTRY(VFIOAddressSpace) list;
-} VFIOAddressSpace;
-
struct VFIOGroup;
typedef struct VFIOContainer {
VFIOContainerBase bcontainer;
- VFIOAddressSpace *space;
int fd; /* /dev/vfio/vfio, empowered by the attached groups */
MemoryListener listener;
MemoryListener prereg_listener;
@@ -98,7 +91,6 @@ typedef struct VFIOContainer {
QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list;
QLIST_HEAD(, VFIOGroup) group_list;
QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
- QLIST_ENTRY(VFIOContainer) next;
QLIST_HEAD(, VFIODevice) device_list;
GList *iova_ranges;
} VFIOContainer;
diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h
index a11aec5755..c7cc6ec9c5 100644
--- a/include/hw/vfio/vfio-container-base.h
+++ b/include/hw/vfio/vfio-container-base.h
@@ -24,12 +24,20 @@ typedef struct {
hwaddr pages;
} VFIOBitmap;
+typedef struct VFIOAddressSpace {
+ AddressSpace *as;
+ QLIST_HEAD(, VFIOContainerBase) containers;
+ QLIST_ENTRY(VFIOAddressSpace) list;
+} VFIOAddressSpace;
+
/*
* This is the base object for vfio container backends
*/
typedef struct VFIOContainerBase {
const VFIOIOMMUOps *ops;
+ VFIOAddressSpace *space;
QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
+ QLIST_ENTRY(VFIOContainerBase) next;
} VFIOContainerBase;
typedef struct VFIOGuestIOMMU {
@@ -48,6 +56,7 @@ int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
IOMMUTLBEntry *iotlb);
void vfio_container_init(VFIOContainerBase *bcontainer,
+ VFIOAddressSpace *space,
const VFIOIOMMUOps *ops);
void vfio_container_destroy(VFIOContainerBase *bcontainer);
--
2.39.3
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