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Code Issues Releases Wiki Activity

arm64: Rename ARM64_WORKAROUND_2966298

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In preparation to apply ARM64_WORKAROUND_2966298 for multiple errata,
rename the kconfig and capability. No functional change.

Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20240110-arm-errata-a510-v1-1-d02bc51aeeee@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Rob Herring 2024-01-10 11:29:20 -06:00 committed by Will Deacon
parent 3931261ecf
commit 546b7cde9b
4 changed files with 8 additions and 4 deletions
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4
arch/arm64/Kconfig
View file

@ -1037,8 +1037,12 @@ config ARM64_ERRATUM_2645198
If unsure, say Y.
config ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD
bool
config ARM64_ERRATUM_2966298
bool "Cortex-A520: 2966298: workaround for speculatively executed unprivileged load"
select ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD
default y
help
This option adds the workaround for ARM Cortex-A520 erratum 2966298.

4
arch/arm64/kernel/cpu_errata.c
View file

@ -713,10 +713,10 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
MIDR_FIXED(MIDR_CPU_VAR_REV(1,1), BIT(25)),
},
#endif
#ifdef CONFIG_ARM64_ERRATUM_2966298
#ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD
{
.desc = "ARM erratum 2966298",
.capability = ARM64_WORKAROUND_2966298,
.capability = ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD,
/* Cortex-A520 r0p0 - r0p1 */
ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A520, 0, 0, 1),
},

2
arch/arm64/kernel/entry.S
View file

@ -428,7 +428,7 @@ alternative_else_nop_endif
ldp x28, x29, [sp, #16 * 14]
.if \el == 0
alternative_if ARM64_WORKAROUND_2966298
alternative_if ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD
tlbi vale1, xzr
dsb nsh
alternative_else_nop_endif

2
arch/arm64/tools/cpucaps
View file

@ -84,7 +84,6 @@ WORKAROUND_2077057
WORKAROUND_2457168
WORKAROUND_2645198
WORKAROUND_2658417
WORKAROUND_2966298
WORKAROUND_AMPERE_AC03_CPU_38
WORKAROUND_TRBE_OVERWRITE_FILL_MODE
WORKAROUND_TSB_FLUSH_FAILURE
@ -100,3 +99,4 @@ WORKAROUND_NVIDIA_CARMEL_CNP
WORKAROUND_QCOM_FALKOR_E1003
WORKAROUND_REPEAT_TLBI
WORKAROUND_SPECULATIVE_AT
WORKAROUND_SPECULATIVE_UNPRIV_LOAD