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openSUSE:Leap:15.5:Update
xen.28172
xsa400-10.patch
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File xsa400-10.patch of Package xen.28172
AMD/IOMMU: abstract maximum number of page table levels We will want to use the constant elsewhere. Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Paul Durrant <paul@xen.org> --- a/xen/include/asm-x86/hvm/svm/amd-iommu-proto.h +++ b/xen/include/asm-x86/hvm/svm/amd-iommu-proto.h @@ -193,7 +193,7 @@ static inline int amd_iommu_get_paging_m while ( max_frames > PTE_PER_TABLE_SIZE ) { max_frames = PTE_PER_TABLE_ALIGN(max_frames) >> PTE_PER_TABLE_SHIFT; - if ( ++level > 6 ) + if ( ++level > IOMMU_MAX_PT_LEVELS ) return -ENOMEM; } --- a/xen/include/asm-x86/hvm/svm/amd-iommu-defs.h +++ b/xen/include/asm-x86/hvm/svm/amd-iommu-defs.h @@ -110,6 +110,7 @@ struct amd_iommu_dte { bool tv:1; unsigned int :5; unsigned int had:2; +#define IOMMU_MAX_PT_LEVELS 6 unsigned int paging_mode:3; uint64_t pt_root:40; bool ppr:1; --- a/xen/drivers/passthrough/amd/iommu_map.c +++ b/xen/drivers/passthrough/amd/iommu_map.c @@ -260,7 +260,7 @@ static int iommu_pde_from_dfn(struct dom table = hd->arch.root_table; level = hd->arch.paging_mode; - BUG_ON( table == NULL || level < 1 || level > 6 ); + BUG_ON( table == NULL || level < 1 || level > IOMMU_MAX_PT_LEVELS ); /* * A frame number past what the current page tables can represent can't
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