OpenCloudOS-Kernel

History

Will Deacon 034aa9cd69 arm64: pgtable: Clear the GP bit for non-executable kernel pages Commit `cca98e9f8b` ("mm: enforce that vmap can't map pages executable") introduced 'pgprot_nx(prot)' for arm64 but collided silently with the BTI support during the merge window, which endeavours to clear the GP bit for non-executable kernel mappings in set_memory_nx(). For consistency between the two APIs, clear the GP bit in pgprot_nx(). Acked-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20200615154642.3579-1-will@kernel.org Signed-off-by: Will Deacon <will@kernel.org>	2020-06-16 17:21:07 +01:00
..
asm	arm64: pgtable: Clear the GP bit for non-executable kernel pages	2020-06-16 17:21:07 +01:00
uapi/asm	arm64: Basic Branch Target Identification support	2020-03-16 17:19:48 +00:00

Will Deacon 034aa9cd69 arm64: pgtable: Clear the GP bit for non-executable kernel pages

Commit cca98e9f8b ("mm: enforce that vmap can't map pages executable")
introduced 'pgprot_nx(prot)' for arm64 but collided silently with the
BTI support during the merge window, which endeavours to clear the GP
bit for non-executable kernel mappings in set_memory_nx().

For consistency between the two APIs, clear the GP bit in pgprot_nx().

Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200615154642.3579-1-will@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

2020-06-16 17:21:07 +01:00

asm arm64: pgtable: Clear the GP bit for non-executable kernel pages 2020-06-16 17:21:07 +01:00

uapi/asm arm64: Basic Branch Target Identification support 2020-03-16 17:19:48 +00:00