Re: [PATCH v1 2/4] x86/fred: Write to FRED MSRs with wrmsrns()

Xin Li
2024-07-04T05:58:11Z

On 7/3/2024 9:18 AM, Andrew Cooper wrote:
> On 03/07/2024 5:06 pm, H. Peter Anvin wrote:
>> I believe tglx declared53 to use them unconditionally since FRED depends on WRMSRNS (and the kernel enforces that.)
>
> I know that Linux has chosen to have this as a software-enforced
> requirement.
>
> The dependency does not exist architecturally, and just because it
> happens to be true on Intel processors doesn't mean it's true of other
> implementations.

Won't it be way better if we could have all x86 vendors agree on it?