[PATCH v5 5/7] arm64: errata: Expand speculative SSBS workaround for Cortex-A720AE

[Mark Rutland]

On Thu, Sep 18, 2025 at 06:27:12AM +0000, Kuninori Morimoto wrote:
> It is same as Cortex-A720.
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

It might be worth saying that Cortex-A720AE is explciitly describedon
Arm's "Arm CPU Security Bulletin: Spectre/Meltdown" page at:

  https://developer.arm.com/documentation/110280/3-0/

... and is described identially to Cortex-A720.

No need to respin for that, Will can choose to add that if he wants.

Either way:

Acked-by: Mark Rutland <mark.rutland at arm.com>

Mark.

> ---
>  arch/arm64/kernel/cpu_errata.c  | 1 +
>  arch/arm64/kernel/proton-pack.c | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
> index 59d723c9ab8f5..7ff6b49beaaff 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -531,6 +531,7 @@ static const struct midr_range erratum_spec_ssbs_list[] = {
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_A710),
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_A715),
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_A720),
> +	MIDR_ALL_VERSIONS(MIDR_CORTEX_A720AE),
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_A725),
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_X1),
>  	MIDR_ALL_VERSIONS(MIDR_CORTEX_X1C),
> diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c
> index edf1783ffc817..f9a32dfde0067 100644
> --- a/arch/arm64/kernel/proton-pack.c
> +++ b/arch/arm64/kernel/proton-pack.c
> @@ -884,6 +884,7 @@ static u8 spectre_bhb_loop_affected(void)
>  	static const struct midr_range spectre_bhb_k38_list[] = {
>  		MIDR_ALL_VERSIONS(MIDR_CORTEX_A715),
>  		MIDR_ALL_VERSIONS(MIDR_CORTEX_A720),
> +		MIDR_ALL_VERSIONS(MIDR_CORTEX_A720AE),
>  		{},
>  	};
>  	static const struct midr_range spectre_bhb_k32_list[] = {
> -- 
> 2.43.0
>