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

[H. Peter Anvin]

Andi just alerted me to this thread.

I, Thomas and Borislav discussed this at LCE last year, and it really
comes up that we have a *large* number of reasons to load microcode
early.  We then need to keep the microcode around so that it can be
loaded on APs, hotplug CPUs, and after S3 resume.

The protocol discussion happened in this thread:

http://marc.info/?i=1332512984-79664-1-git-send-email-trenn@xxxxxxx

Fenghua Yu at Intel is currently working on the implementation.

	-hpa
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