This is a note to let you know that I've just added the patch titled iommu/amd: Finish TLB flush in amd_iommu_unmap() to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iommu-amd-finish-tlb-flush-in-amd_iommu_unmap.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From ce76353f169a6471542d999baf3d29b121dce9c0 Mon Sep 17 00:00:00 2001 From: Joerg Roedel <jroedel@xxxxxxx> Date: Fri, 13 Oct 2017 14:32:37 +0200 Subject: iommu/amd: Finish TLB flush in amd_iommu_unmap() 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 @@ -3096,6 +3096,7 @@ 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; } Patches currently in stable-queue which might be from jroedel@xxxxxxx are queue-4.4/iommu-amd-finish-tlb-flush-in-amd_iommu_unmap.patch