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

Message ID 20200625103123.7240-1-saiprakash.ranjan@codeaurora.org (mailing list archive)
State Mainlined
Commit 108447fd0d1a34b0929cd26dc637c917a734ebab
Headers show
Series arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist | expand

Commit Message

Sai Prakash Ranjan June 25, 2020, 10:31 a.m. UTC
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 <swboyd@chromium.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
---
 arch/arm64/kernel/cpu_errata.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Douglas Anderson June 25, 2020, 1:48 p.m. UTC | #1
Hi,

On Thu, Jun 25, 2020 at 3:31 AM Sai Prakash Ranjan
<saiprakash.ranjan@codeaurora.org> wrote:
>
> 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 <swboyd@chromium.org>
> Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.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 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>
Will Deacon June 25, 2020, 7:22 p.m. UTC | #2
On Thu, 25 Jun 2020 16:01:23 +0530, Sai Prakash Ranjan wrote:
> 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[].

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: Add KRYO{3,4}XX silver CPU cores to SSB safelist
      https://git.kernel.org/arm64/c/108447fd0d1a

Cheers,
diff mbox series

Patch

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),
 	{},
 };