Re: [PATCH v8 6/7] x86/amd_node: Restrict SMN setup to AMD CPUs

[sashiko-bot@kernel.org]

> amd_smn_init() also runs on Hygon because Hygon sets X86_FEATURE_ZEN.
> It reserves config space on the matching host-bridge roots and groups
> them by the CPU-derived node count. Hygon DF nodes are enumerated by
> PCI ID, CPU NodeIds are sparse, and the nodes in a socket share one SMN
> ingress, so the resulting root map is wrong on Hygon. These reservations
> also prevent the Hygon node layer from claiming roots for its own
> node-to-root mapping.
> 
> Hygon vendor matching has been removed from amd64_edac, amd_atl, and
> k10temp modules. The remaining users match AMD PCI IDs or check for an
> AMD CPU. With these changes in place, no in-tree Hygon driver uses the
> AMD SMN accessors.
> 
> Restrict SMN setup and root discovery to AMD CPUs.
> 
> Signed-off-by: Lin Wang <wanglin@open-hieco.net>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261022074218.667049-1-wanglin@open-hieco.net?part=6