arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55
authorSuzuki K Poulose <suzuki.poulose@arm.com>
Wed, 3 Feb 2021 23:00:57 +0000 (23:00 +0000)
committerWill Deacon <will@kernel.org>
Mon, 8 Feb 2021 12:30:53 +0000 (12:30 +0000)
commitc0b15c25d25171db4b70cc0b7dbc1130ee94017d
treeb8256ed9f29bc327049f7d23c1e9b807f5f744d4
parent19c329f6808995b142b3966301f217c831e7cf31
arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55

The erratum 1024718 affects Cortex-A55 r0p0 to r2p0. However
we apply the work around for r0p0 - r1p0. Unfortunately this
won't be fixed for the future revisions for the CPU. Thus
extend the work around for all versions of A55, to cover
for r2p0 and any future revisions.

Cc: stable@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210203230057.3961239-1-suzuki.poulose@arm.com
[will: Update Kconfig help text]
Signed-off-by: Will Deacon <will@kernel.org>
arch/arm64/Kconfig
arch/arm64/kernel/cpufeature.c