diff options
| author | Peter Xu <peterx@redhat.com> | 2017-07-17 17:02:29 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-08-02 00:13:25 +0300 |
| commit | 892721d91d9deb2affe4e61334b1dd1b43728f92 (patch) | |
| tree | 0b7ec022f155058a582cbf97323c6f42805ffb58 | |
| parent | 5df04f1762ef78c08fd69e19dcedf3d9ba8c9b86 (diff) | |
| download | qemu-892721d91d9deb2affe4e61334b1dd1b43728f92.tar.gz | |
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>
| -rw-r--r-- | hw/i386/intel_iommu.c | 4 | ||||
| -rw-r--r-- | hw/i386/intel_iommu_internal.h | 1 |
2 files changed, 2 insertions, 3 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index e398746b4b..e0b0498385 100644 --- 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 f50ecd8b73..0e73a65bf2 100644 --- 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)) |