diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-04-09 16:22:24 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-10-08 12:25:25 +0100 |
| commit | 9405447ef79bc93101373e130f72e9e6cbf17dbb (patch) | |
| tree | 32b2849bdfb5da0850e377da453de5c3b50476ff /arch/arm64/kernel/cpu_errata.c | |
| parent | 93916beb70143c46bf1d2bacf814be3a124b253b (diff) | |
arm64: Avoid Cavium TX2 erratum 219 when switching TTBR
As a PRFM instruction racing against a TTBR update can have undesirable
effects on TX2, NOP-out such PRFM on cores that are affected by
the TX2-219 erratum.
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/cpu_errata.c')
| -rw-r--r-- | arch/arm64/kernel/cpu_errata.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index d999ca2dd760..a19bb3e4bcfb 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -884,6 +884,11 @@ const struct arm64_cpu_capabilities arm64_errata[] = { ERRATA_MIDR_RANGE_LIST(tx2_family_cpus), .matches = needs_tx2_tvm_workaround, }, + { + .desc = "Cavium ThunderX2 erratum 219 (PRFM removal)", + .capability = ARM64_WORKAROUND_CAVIUM_TX2_219_PRFM, + ERRATA_MIDR_RANGE_LIST(tx2_family_cpus), + }, #endif { } |