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vfio/iommufd: Relax assert check for iommufd backend

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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>
This commit is contained in:
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 {