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intel_iommu: Make pasid entry type check accurate

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When guest configures Nested Translation(011b) or First-stage Translation only
(001b), type check passed unaccurately.

Fails the type check in those cases as their simulation isn't supported yet.

Fixes: fb43cf739e ("intel_iommu: scalable mode emulation")
Suggested-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Clément Mathieu--Drif<clement.mathieu--drif@eviden.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20241212083757.605022-3-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Zhenzhong Duan 2024-12-12 16:37:39 +08:00 • committed by Michael S. Tsirkin
parent a84e37af36
commit b291dae33d
1 changed files with 4 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

12
hw/i386/intel_iommu.c
View file

@ -759,20 +759,16 @@ static inline bool vtd_pe_type_check(X86IOMMUState *x86_iommu,
VTDPASIDEntry *pe)
{
switch (VTD_PE_GET_TYPE(pe)) {
case VTD_SM_PASID_ENTRY_FLT:
case VTD_SM_PASID_ENTRY_SLT:
case VTD_SM_PASID_ENTRY_NESTED:
break;
return true;
case VTD_SM_PASID_ENTRY_PT:
if (!x86_iommu->pt_supported) {
return false;
}
break;
return x86_iommu->pt_supported;
case VTD_SM_PASID_ENTRY_FLT:
case VTD_SM_PASID_ENTRY_NESTED:
default:
/* Unknown type */
return false;
}
return true;
}
static inline bool vtd_pdire_present(VTDPASIDDirEntry *pdire)