This is a note to let you know that I've just added the patch titled

iommu/amd: Limit the IOVA page range to the specified addresses

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: iommu-amd-limit-the-iova-page-range-to-the-specified-addresses.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Mon Dec 18 14:12:35 CET 2017

From: Gary R Hook gary.hook@amd.com Date: Fri, 3 Nov 2017 10:50:34 -0600 Subject: iommu/amd: Limit the IOVA page range to the specified addresses

From: Gary R Hook gary.hook@amd.com

[ Upstream commit b92b4fb5c14257c0e7eae291ecc1f7b1962e1699 ]

The extent of pages specified when applying a reserved region should include up to the last page of the range, but not the page following the range.

Signed-off-by: Gary R Hook gary.hook@amd.com Fixes: 8d54d6c8b8f3 ('iommu/amd: Implement apply_dm_region call-back') Signed-off-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3211,7 +3211,7 @@ static void amd_iommu_apply_dm_region(st unsigned long start, end;

start = IOVA_PFN(region->start); - end = IOVA_PFN(region->start + region->length); + end = IOVA_PFN(region->start + region->length - 1);

WARN_ON_ONCE(reserve_iova(&dma_dom->iovad, start, end) == NULL); }

Patches currently in stable-queue which might be from gary.hook@amd.com are

queue-4.9/iommu-amd-limit-the-iova-page-range-to-the-specified-addresses.patch