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intel_iommu: add present bit check for pasid table entries

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The present bit check for pasid entry (pe) and pasid directory
entry (pdire) were missed in previous commits as fpd bit check
doesn't require present bit as "Set". This patch adds the present
bit check for callers which wants to get a valid pe/pdire.

Cc: qemu-stable@nongnu.org
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Yi Sun <yi.y.sun@linux.intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Message-Id: <1578058086-4288-3-git-send-email-yi.l.liu@intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Liu Yi L 2020-01-03 21:28:06 +08:00 • committed by Michael S. Tsirkin
parent a2e1cd41cc
commit 56fc1e6ac6
2 changed files with 74 additions and 19 deletions
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1
hw/i386/intel_iommu_internal.h
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@ -479,6 +479,7 @@ typedef struct VTDRootEntry VTDRootEntry;
#define VTD_PASID_ENTRY_FPD (1ULL << 1) /* Fault Processing Disable */
/* PASID Granular Translation Type Mask */
#define VTD_PASID_ENTRY_P 1ULL
#define VTD_SM_PASID_ENTRY_PGTT (7ULL << 6)
#define VTD_SM_PASID_ENTRY_FLT (1ULL << 6)
#define VTD_SM_PASID_ENTRY_SLT (2ULL << 6)