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| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2020-03-17 04:10:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-23 11:38:20 +0300 |
| commit | 7435523bb1b9a141c878fe2f2cc70aeab884727c (patch) | |
| tree | f8f6b2eb1ad8244e52591237a15c3555d93ae197 | |
| parent | fa2fa282240b6b5d5a82b344c1c706e685bbd398 (diff) | |
| download | linux-7435523bb1b9a141c878fe2f2cc70aeab884727c.tar.xz | |
iommu/vt-d: Fix page request descriptor size
[ Upstream commit 52355fb1919ef7ed9a38e0f3de6e928de1f57217 ]
Intel VT-d might support PRS (Page Reqest Support) when it's
running in the scalable mode. Each page request descriptor
occupies 32 bytes and is 32-bytes aligned. The page request
descriptor offset mask should be 32-bytes aligned.
Fixes: 5b438f4ba315d ("iommu/vt-d: Support page request in scalable mode")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/iommu/intel-svm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index fc7d78876e02..2998418f0a38 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -531,7 +531,7 @@ struct page_req_dsc { u64 priv_data[2]; }; -#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x10) +#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x20) static bool access_error(struct vm_area_struct *vma, struct page_req_dsc *req) { |