Re: [PATCH 6/8] arm64: cpufeature: Relax AArch32 system checks if EL1 is 64-bit only

[Suzuki K Poulose]

On 04/14/2020 10:31 PM, Will Deacon wrote:
> If AArch32 is not supported at EL1, the AArch32 feature register fields
> no longer advertise support for some system features:
>
>    * ISAR4.SMC
>    * PFR1.{Virt_frac, Sec_frac, Virtualization, Security, ProgMod}
>
> In which case, we don't need to emit "SANITY CHECK" failures for all of
> them.
>
> Add logic to relax the strictness of individual feature register fields
> at runtime and use this for the fields above if 32-bit EL1 is not
> supported.
>
> Signed-off-by: Will Deacon <will@xxxxxxxxxx>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>