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 10:07:29 +0100 |
| commit | 03bfadfb0d7990bf558dabd6b26e4f06bc32c45b (patch) | |
| tree | 52a38831c16d4fed98ea62239f54e284ba670eec /drivers/iommu | |
| parent | cb0acb37010c216e4781224ad4ab4c12ca9cb5fe (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')
| -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 1a0b110f12c0..0c910a863581 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3211,7 +3211,7 @@ static void amd_iommu_apply_dm_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); } |