Re: [PATCH] x86/amd: Expand comment about NullSelectorClearsBase

On 20.08.2026 19:26, Andrew Cooper wrote:
> Rework detect_zen2_null_seg_behaviour() to use the new MSR infrastructure.
> 
> Zen2 doesn't have WRMSRNS so don't bother relaxing the write.  All it will do
> is insert a useless alternative.
> 
> No functional change.
> 
> Signed-off-by: Andrew Cooper <[email protected]>

Reviewed-by: Jan Beulich <[email protected]>

> Naming Zen2/3 in init_hygon() isn't ideal, but the early hygons really were
> not far removed from the AMD microarchitectures.

I wonder what we should do about Hygon. Just recently I saw patches going into
somewhere (gcc?) to support recent hardware. We haven't seen any contributions
in many years to keep our support up-to-date. We may want/need to consider
removing support if that code is effectively unmaintained.

Jan