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| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2020-03-17 02:10:18 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2020-03-19 15:10:10 +0100 |
| commit | 52355fb1919ef7ed9a38e0f3de6e928de1f57217 (patch) | |
| tree | 3c32f771c78a4325360680bbfc7dec60b1ef1eb8 /drivers/iommu | |
| parent | Linux 5.6-rc6 (diff) | |
| download | linux-52355fb1919ef7ed9a38e0f3de6e928de1f57217.tar.xz linux-52355fb1919ef7ed9a38e0f3de6e928de1f57217.zip | |
iommu/vt-d: Fix page request descriptor size
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>
Diffstat (limited to 'drivers/iommu')
| -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 d7f2a5358900..edac769fc03d 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) { |