4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Joerg Roedel <jroedel@xxxxxxx> commit ce76353f169a6471542d999baf3d29b121dce9c0 upstream. The function only sends the flush command to the IOMMU(s), but does not wait for its completion when it returns. Fix that. Fixes: 601367d76bd1 ('x86/amd-iommu: Remove iommu_flush_domain function') Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iommu/amd_iommu.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3120,6 +3120,7 @@ static size_t amd_iommu_unmap(struct iom mutex_unlock(&domain->api_lock); domain_flush_tlb_pde(domain); + domain_flush_complete(domain); return unmap_size; }