Re: [PATCH] perf/x86: check ucode before disabling PEBS onSandyBridge

[Borislav Petkov]

On Tue, Jun 12, 2012 at 01:42:07PM -0700, H. Peter Anvin wrote:
> I personally don't know of any valid use case for per-core loads, and
> it sounds like a horrid idea.

Vehemently agreed.

However, last time we talked about Ingo mentioned some possibility
of having different microcode versions on different CPUs:
http://lkml.indiana.edu/hypermail/linux/kernel/1105.3/00749.html

Hmm...

> And yes, I would prefer a single sysfs file, or better yet a plain old
> device node.

Also agreed.

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