arm64: Add compat hwcap SSBS

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This hwcap was added for 32-bit native arm kernel by commit fea53546be
("ARM: 9274/1: Add hwcap for Speculative Store Bypassing Safe") and hence
the corresponding changes added in 32-bit compat arm64 for similar user
interfaces.

Speculative Store Bypass Safe is a feature(FEAT_SSBS) present in
AArch32/AArch64 state for Armv8 and can be identified by PFR2.SSBS
identification register. This hwcap is already advertised in native arm64
kernel.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230111053706.13994-8-amit.kachhap@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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This commit is contained in:

Amit Daniel Kachhap 2023-01-11 11:07:06 +05:30 • committed by Catalin Marinas

parent 2d602aa99a

commit 4f2c9bf16a

3 changed files with 4 additions and 1 deletions

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1

arch/arm64/include/asm/hwcap.h

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3

arch/arm64/kernel/cpufeature.c

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1

arch/arm64/kernel/cpuinfo.c

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