Re: [PATCH v6 02/21] arm64: Allow mismatched 32-bit EL0 support

[Catalin Marinas]

On Tue, May 18, 2021 at 10:47:06AM +0100, Will Deacon wrote:
> +static bool has_32bit_el0(const struct arm64_cpu_capabilities *entry, int scope)
> +{
> +	if (!has_cpuid_feature(entry, scope))
> +		return allow_mismatched_32bit_el0;
> +
> +	if (scope == SCOPE_SYSTEM)
> +		pr_info("detected: 32-bit EL0 Support\n");
> +
> +	return true;
> +}

We may have discussed this before: AFAICT this will print 32-bit EL0
detected even if there's no 32-bit EL0 on any CPU. Should we instead
print 32-bit EL0 detected on CPU X when allow_mismatched_32bit_el0 is
passed? It would also give us an indication of the system configuration
when people start reporting bugs.

-- 
Catalin