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vfio/iommufd: Relax assert check for iommufd backend 

Currently iommufd doesn't support dirty page sync yet,
but it will not block us doing live migration if VFIO
migration is force enabled.

So in this case we allow set_dirty_page_tracking to be NULL.
Note we don't need same change for query_dirty_bitmap because
when dirty page sync isn't supported, query_dirty_bitmap will
never be called.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
master
Zhenzhong Duan 2023-11-21 16:44:04 +08:00 committed by Cédric Le Goater
parent 5ee3dc7af7
commit 36e84d0c17
2 changed files with 4 additions and 4 deletions
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4
hw/vfio/container-base.c
View File

@ -55,6 +55,10 @@ void vfio_container_del_section_window(VFIOContainerBase *bcontainer,
int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
bool start)
{
if (!bcontainer->dirty_pages_supported) {
return 0;
}
g_assert(bcontainer->ops->set_dirty_page_tracking);
return bcontainer->ops->set_dirty_page_tracking(bcontainer, start);
}

4
hw/vfio/container.c
View File

@ -216,10 +216,6 @@ static int vfio_legacy_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
.argsz = sizeof(dirty),
};
if (!bcontainer->dirty_pages_supported) {
return 0;
}
if (start) {
dirty.flags = VFIO_IOMMU_DIRTY_PAGES_FLAG_START;
} else {