teword.org Signed-off-by: Lu Baolu Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/intel/debugfs.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/intel/debugfs.c b/drivers/iommu/intel/debugfs.c index affbf4a1558de..5aa7f46a420b5 100644 --- a/drivers/iommu/intel/debugfs.c +++ b/drivers/iommu/intel/debugfs.c @@ -435,8 +435,21 @@ static int domain_translation_struct_show(struct seq_file *m, } pgd &= VTD_PAGE_MASK; } else { /* legacy mode */ - pgd = context->lo & VTD_PAGE_MASK; - agaw = context->hi & 7; + u8 tt = (u8)(context->lo & GENMASK_ULL(3, 2)) >> 2; + + /* + * According to Translation Type(TT), + * get the page table pointer(SSPTPTR). + */ + switch (tt) { + case CONTEXT_TT_MULTI_LEVEL: + case CONTEXT_TT_DEV_IOTLB: + pgd = context->lo & VTD_PAGE_MASK; + agaw = context->hi & 7; + break; + default: + goto iommu_unlock; + } } seq_printf(m, "Device %04x:%02x:%02x.%x ", -- 2.51.0[PATCH 6.17 398/563] iommu/vt-d: debugfs: Fix legacy mode page table dump logicGreg Kroah-Hartman undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined undefined™