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iommu/vt-d: Fix page request descriptor size

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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>
This commit is contained in:
Jacob Pan 2020-03-17 09:10:18 +08:00 committed by Joerg Roedel
parent fb33c6510d
commit 52355fb191
1 changed files with 1 additions and 1 deletions
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2
drivers/iommu/intel-svm.c
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@ -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)
{