We should populate dirty bitmap for newly added vfio_dma as it can be
accessed arbitrarily if vfio_iommu is not promoted to pinned_scope.
vfio_dma_populate_bitmap can handle this properly.
Fixes: d6a4c185660c ("vfio iommu: Implementation of ioctl for dirty pages tracking")
Signed-off-by: Keqian Zhu <zhukeqian1@xxxxxxxxxx>
---
drivers/vfio/vfio_iommu_type1.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index b0a26e8e0adf..29c8702c3b6e 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -1413,7 +1413,9 @@ static int vfio_dma_do_map(struct vfio_iommu *iommu,
if (!ret && iommu->dirty_page_tracking) {
ret = vfio_dma_bitmap_alloc(dma, pgsize);
- if (ret)
+ if (!ret)
+ vfio_dma_populate_bitmap(iommu, dma);
+ else
vfio_remove_dma(iommu, dma);
}
--
2.19.1
