diff mbox series

[rfcv2,02/17] intel_iommu: Make pasid entry type check accurate

Message ID 20240522062313.453317-3-zhenzhong.duan@intel.com
State New
Headers show
Series intel_iommu: Enable stage-1 translation for emulated device | expand

Commit Message

Duan, Zhenzhong May 22, 2024, 6:22 a.m. UTC 
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: fb43cf739e1 ("intel_iommu: scalable mode emulation")
Suggested-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 hw/i386/intel_iommu.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index d85aaf4bb8..348e3a441e 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -742,20 +742,16 @@  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)