Re: [PATCH v4 4/5] x86/amd_node: Skip SMN setup on Hygon Fam18h models 0x04-0x08

From: Borislav Petkov

Date: Tue Sep 01 2026 - 22:50:09 EST


On Tue, Sep 01, 2026 at 03:16:59PM +0800, Lin Wang wrote:
> @@ -252,6 +252,18 @@ static int __init amd_smn_init(void)
> if (!cpu_feature_enabled(X86_FEATURE_ZEN))

This driver should exit on Hygon right here.

Why doesn't it do that?

I know why - you set X86_FEATURE_ZEN.

Why?

What do you really need it for?

--
Regards/Gruss,
Boris.

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