Re: [PATCH v2 01/29] x86: treewide: Introduce x86_vendor_amd_or_hygon()

[Peter Zijlstra]

On Mon, Mar 17, 2025 at 06:32:16PM +0100, Borislav Petkov wrote:
> On Mon, Mar 17, 2025 at 05:47:17PM +0100, Ahmed S. Darwish wrote:
> > The pattern to check if an x86 vendor is AMD or HYGON (or not both) is
> > pretty common.  Introduce x86_vendor_amd_or_hygon() at <asm/processor.h>
> 
> So if we need to check "intel too", we do
> 
> x86_vendor_amd_or_hygon_or_intel?
> 
> Nah, this is silly.

Would it make more sense to have a Zen1 feature and check that instead?

Because, IIRC Hygon is simply a Zen1 copy.