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(parent: 30685d7) | patch
arm64: mm: Display guarded pages in ptdump
authorMark Brown <broonie@kernel.org>
Mon, 16 Mar 2020 16:50:53 +0000 (16:50 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Mon, 16 Mar 2020 17:19:50 +0000 (17:19 +0000)
commitde48bb369242fe17022fab3a2addc9c6dacad43f
tree8d771d514f89115c9ba4be51062df313c249f084tree | snapshot
parent30685d789c48f27f97f6ecde6185b606a6c7abf6commit | diff
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>
arch/arm64/mm/dump.c diff | blob | history
Domain: System / Kernel;