intel_iommu: fix iova for pt

IOMMUTLBEntry.iova is returned incorrectly on one PT path (though mostly
we cannot really trigger this path, even if we do, we are mostly
disgarding this value, so it didn't break anything). Fix it by
converting the VTD_PAGE_MASK into the correct definition
VTD_PAGE_MASK_4K, then remove VTD_PAGE_MASK.

Fixes: b93130 ("intel_iommu: cleanup vtd_{do_}iommu_translate()")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index e398746b4b26517c85ab74fed42c431e11045654..e0b04983852c5f0c526acd120c139d88dba72a4f 100644 (file)
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -1139,9 +1139,9 @@ static bool vtd_do_iommu_translate(VTDAddressSpace *vtd_as, PCIBus *bus,
      * Also, let's ignore IOTLB caching as well for PT devices.
      */
     if (vtd_ce_get_type(&ce) == VTD_CONTEXT_TT_PASS_THROUGH) {
-        entry->iova = addr & VTD_PAGE_MASK;
+        entry->iova = addr & VTD_PAGE_MASK_4K;
         entry->translated_addr = entry->iova;
-        entry->addr_mask = VTD_PAGE_MASK;
+        entry->addr_mask = ~VTD_PAGE_MASK_4K;
         entry->perm = IOMMU_RW;
         trace_vtd_translate_pt(source_id, entry->iova);
 

diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index f50ecd8b73de942a3089a71a9fb038f3075f0d41..0e73a65bf2494f6994411fd687e58906add21b12 100644 (file)
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -384,7 +384,6 @@ typedef struct VTDIOTLBPageInvInfo VTDIOTLBPageInvInfo;
 /* Pagesize of VTD paging structures, including root and context tables */
 #define VTD_PAGE_SHIFT              12
 #define VTD_PAGE_SIZE               (1ULL << VTD_PAGE_SHIFT)
-#define VTD_PAGE_MASK               (VTD_PAGE_SIZE - 1)
 
 #define VTD_PAGE_SHIFT_4K           12
 #define VTD_PAGE_MASK_4K            (~((1ULL << VTD_PAGE_SHIFT_4K) - 1))