arm64: add POE signal support

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Add PKEY support to signals, by saving and restoring POR_EL0 from the stackframe.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20240822151113.1479789-20-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

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Joey Gouly 2024-08-22 16:11:02 +01:00 • committed by Will Deacon

parent 7f955be9f8

commit 9160f7e909

2 changed files with 69 additions and 0 deletions

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7

arch/arm64/include/uapi/asm/sigcontext.h

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62

arch/arm64/kernel/signal.c

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