arm64: mm: Display guarded pages in ptdump
v8.5-BTI introduces the GP field in stage 1 translation tables which indicates that blocks and pages with it set are guarded pages for which branch target identification checks should be performed. Decode this when dumping the page tables to aid debugging. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -145,6 +145,11 @@ static const struct prot_bits pte_bits[] = {
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.val = PTE_UXN,
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.set = "UXN",
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.clear = " ",
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}, {
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.mask = PTE_GP,
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.val = PTE_GP,
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.set = "GP",
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.clear = " ",
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}, {
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.mask = PTE_ATTRINDX_MASK,
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.val = PTE_ATTRINDX(MT_DEVICE_nGnRnE),
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