Re: [PATCH] x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes

[Dave Hansen]

On 3/7/25 07:58, Florent Revest wrote:
> One thing I'm not entirely sure about is that
> for_each_node_with_cpus() is implemented on top of
> for_each_online_node(). This differs from the current code which uses
> for_each_node(). I can't tell if iterating over offline nodes is a bug
> or a feature of load_microcode_amd() so this would be an extra change
> to the business logic which I can't really explain/justify.

Actually, the per-node caches seem to have gone away at some point too.
Boris would know the history. This might need a a cleanup like Boris
alluded to in 05e91e7211383. This might not even need a nid loop.