Messages in this thread |  | | | Date | Tue, 26 Feb 2008 22:51:12 -0800 | | From | "H. Peter Anvin" <> | | Subject | Re: rdmsr_safe_on_cpu hangs? | |
Dan Upton wrote:
>
> I guess the question is, am I just misunderstanding the use of
> rdmsr_safe_on_cpu, or is it an issue with that particular MSR (some of
> the stuff I've read indicates that rdmsr_safe was really only
> implemented as a prequel to the coretemp driver), or is it something
> wrong with rdmsr_safe_on_cpu?
>
*msr_safe_*() can only trap #GP's, which would be manifest as oopses if
you used the unsafe versions. If the CPU *hangs* when touching an MSR,
nothing we can do in software will help.
-hpa
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