On 06/15/2009 10:10 PM, Peter Zijlstra wrote:
But one thing is sure: it is certainly going to be faster than the INVLPG(s!) we have to do with the GUP solution.Sure, but we only pay that price when we do the callchain bit, not on every NMI.
You can read cr2 on nmi entry and nmi exit, and only write it if it has changed (if it turns out that writing cr2 is expensive; ISTR that it isn't).
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