diff options
| author | Gary R Hook <gary.hook@amd.com> | 2017-11-03 10:50:34 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-20 10:10:26 +0100 |
| commit | 07a93b48a0f73e0cb74355a7dd80c6ad55bed674 (patch) | |
| tree | dcaeef85a0d28ef5a483e3a45600740f2c11abf4 /drivers/iommu/amd_iommu.c | |
| parent | ddf2588a05c820b305bc6db2fe6e498a3bc6fde9 (diff) | |
iommu/amd: Limit the IOVA page range to the specified addresses
[ 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>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 8e8874d23717..99a2a57b6cfd 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3155,7 +3155,7 @@ static void amd_iommu_apply_resv_region(struct device *dev, 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); } |