Thread (3 messages) 3 messages, 3 authors, 2020-06-25

Re: [PATCH] arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist

From: Doug Anderson <dianders@chromium.org>
Date: 2020-06-25 13:48:22
Also in: linux-arm-msm, lkml

Hi,

On Thu, Jun 25, 2020 at 3:31 AM Sai Prakash Ranjan
[off-list ref] wrote:
quoted hunk ↗ jump to hunk
QCOM KRYO{3,4}XX silver/LITTLE CPU cores are based on
Cortex-A55 and are SSB safe, hence add them to SSB
safelist -> arm64_ssb_cpus[].

Reported-by: Stephen Boyd <redacted>
Signed-off-by: Sai Prakash Ranjan <redacted>
---
 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 ad06d6802d2e..cf50c53e9357 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -460,6 +460,8 @@ static const struct midr_range arm64_ssb_cpus[] = {
        MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
        MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
        MIDR_ALL_VERSIONS(MIDR_BRAHMA_B53),
+       MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_3XX_SILVER),
+       MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_SILVER),
Reviewed-by: Douglas Anderson <dianders@chromium.org>

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