[PATCH 2/2] arm64: Allow booting of late CPUs affected by erratum 1418040

Suzuki K Poulose suzuki.poulose at arm.com
Wed Jul 29 05:34:16 EDT 2020


On 07/28/2020 10:21 AM, Marc Zyngier wrote:
> As we can now switch from a system that isn't affected by 1418040
> to a system that globally is affected, let's allow affected CPUs
> to come in at a later time.
> 
> Signed-off-by: Marc Zyngier <maz at kernel.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 79728bfb5351..2c0b82db825b 100644
> --- a/arch/arm64/kernel/cpu_errata.c
> +++ b/arch/arm64/kernel/cpu_errata.c
> @@ -910,6 +910,8 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
>   		.desc = "ARM erratum 1418040",
>   		.capability = ARM64_WORKAROUND_1418040,
>   		ERRATA_MIDR_RANGE_LIST(erratum_1418040_list),
> +		.type = (ARM64_CPUCAP_SCOPE_LOCAL_CPU |
> +			 ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU),
>   	},
>   #endif
>   #ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT
> 

Reviewed-by: Suzuki K Poulose <suzuki.poulose at arm.com>




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