motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-31 14:23:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vfio/container: Add dirty tracking started flag

Browse source 
Add a flag to VFIOContainerBase that indicates whether dirty tracking
has been started for the container or not.

This will be used in the following patches to allow dirty page syncs
only if dirty tracking has been started.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Tested-by: Joao Martins <joao.m.martins@oracle.com>
Link: https://lore.kernel.org/r/20241218134022.21264-2-avihaih@nvidia.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Avihai Horon 2024-12-18 15:40:16 +02:00 • committed by Cédric Le Goater
parent 37f05a59e8
commit d77e85dbd7
2 changed files with 12 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
hw/vfio/container-base.c
View file

@ -64,13 +64,23 @@ int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
bool start, Error **errp)
{
VFIOIOMMUClass *vioc = VFIO_IOMMU_GET_CLASS(bcontainer);
int ret;
if (!bcontainer->dirty_pages_supported) {
return 0;
}
g_assert(vioc->set_dirty_page_tracking);
return vioc->set_dirty_page_tracking(bcontainer, start, errp);
if (bcontainer->dirty_pages_started == start) {
return 0;
}
ret = vioc->set_dirty_page_tracking(bcontainer, start, errp);
if (!ret) {
bcontainer->dirty_pages_started = start;
}
return ret;
}
int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer,

1
include/hw/vfio/vfio-container-base.h
View file

@ -44,6 +44,7 @@ typedef struct VFIOContainerBase {
unsigned long pgsizes;
unsigned int dma_max_mappings;
bool dirty_pages_supported;
bool dirty_pages_started; /* Protected by BQL */
QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
QLIST_ENTRY(VFIOContainerBase) next;