Re: [PATCH 4/4] arm64: cpu_errata: Apply Erratum 845719 to KRYO2XX Silver

[Marc Zyngier]

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@xxxxxxxxxxxxxx>
> ---
>  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?

        M.
--
Jazz is not dead. It just smells funny...