Messages in this thread | | | Date | Mon, 09 Nov 2020 15:06:35 +0530 | From | Sai Prakash Ranjan <> | Subject | Re: [PATCH 4/4] arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver |
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Hi Marc,
On 2020-11-05 14:59, Marc Zyngier wrote: > On 2020-11-04 23:22, Konrad Dybcio wrote: >> QCOM KRYO2XX Silver cores are Cortex-A53 based and are >> susceptible to the 845719 erratum. Add them to the lookup >> list to apply the erratum. >> >> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org> >> --- >> arch/arm64/kernel/cpu_errata.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/arch/arm64/kernel/cpu_errata.c >> b/arch/arm64/kernel/cpu_errata.c >> index 61314fd70f13..cafaf0da05b7 100644 >> --- a/arch/arm64/kernel/cpu_errata.c >> +++ b/arch/arm64/kernel/cpu_errata.c >> @@ -299,6 +299,8 @@ static const struct midr_range >> erratum_845719_list[] = { >> MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4), >> /* Brahma-B53 r0p[0] */ >> MIDR_REV(MIDR_BRAHMA_B53, 0, 0), >> + /* Kryo2XX Silver rAp4 */ >> + MIDR_REV(MIDR_QCOM_KRYO_2XX_SILVER, 0xa, 0x4), > > Is this the only affected version? If this is actually an A53, how do > the > revisions map between Kryo and Cortex cores? >
From what I see from the docs, this is the only version used in MSM8998(silver cores are based on Cortex A53) and it maps to r0p4. @Konrad, can you include (rap4 => r0p4) in comment.
Thanks, Sai
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