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iommu/io-pgtable-arm-v7s: Check table PTEs more precisely
Whilst we don't support the PXN bit at all, so should never encounter a level 1 section or supersection PTE with it set, it would still be wise to check both table type bits to resolve any theoretical ambiguity. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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@ -92,7 +92,8 @@
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#define ARM_V7S_PTE_TYPE_CONT_PAGE 0x1
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#define ARM_V7S_PTE_IS_VALID(pte) (((pte) & 0x3) != 0)
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#define ARM_V7S_PTE_IS_TABLE(pte, lvl) (lvl == 1 && ((pte) & ARM_V7S_PTE_TYPE_TABLE))
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#define ARM_V7S_PTE_IS_TABLE(pte, lvl) \
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((lvl) == 1 && (((pte) & 0x3) == ARM_V7S_PTE_TYPE_TABLE))
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/* Page table bits */
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#define ARM_V7S_ATTR_XN(lvl) BIT(4 * (2 - (lvl)))
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