Re: perf uncore & lkvm woes

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On Thu, 2012-08-16 at 14:06 +0300, Avi Kivity wrote:

> Another option is to deal with them on the host side.  That has the
> benefit of working with non-Linux guests too.

Right, its an insane amount of MSRs though, but it could be done if
someone takes the time to enumerate them all.

If KVM then simply ignores all writes and returns all 0 on read we can
do the same we do for the regular PMU in check_hw_exists().

> We can just ignore the MSR and print some warning.

If you don't mind printing a warning every time a Linux guest boots ;-)


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