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arm64: docs: Document SSBS HWCAP

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[ Upstream commit ee91176120bd584aa10c564e7e9fdcaf397190a1 ]

We advertise the MRS/MSR instructions for toggling SSBS at EL0 using an
HWCAP, so document it along with the others.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Will Deacon
2019-10-08 17:39:18 +02:00
committed by Greg Kroah-Hartman
parent a59d42ac50
commit 09c22781dd
1 changed files with 4 additions and 0 deletions
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4
Documentation/arm64/elf_hwcaps.txt
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@@ -178,3 +178,7 @@ HWCAP_ILRCPC
HWCAP_FLAGM HWCAP_FLAGM
Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001. Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001.
HWCAP_SSBS
Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010.