Re: [Qemu-devel] [PATCH v3 2/3] utils: Add helper to read arm MIDR_EL1 register

[Richard Henderson]

On 10/23/2016 10:55 PM, address@hidden wrote:
> +static uint64_t aarch64_midr_val;
> +uint64_t get_aarch64_cpu_id(void)
> +{
> +#ifdef CONFIG_LINUX
> +    aarch64_midr_val = qemu_read_aarch64_midr_el1();
> +    aarch64_midr_val &= CPU_MODEL_MASK;
> +
> +    return aarch64_midr_val;
> +#else
> +    return 0;
> +#endif
> +}
> +
> +bool is_thunderx_pass2_cpu(void)
> +{
> +    return aarch64_midr_val == MIDR_THUNDERX_PASS2;
> +}

Any particular reason why you want to keep midr_val and MIDR_THUNDERX private
to this file?  Seems like it would be cheaper to export those in the header.


r~