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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] TPR write optimization (even improves 2003 sp2)
On 07/01/2009 02:59, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote: > Is there such a facility available under Intel CPU's, other than the > latest 'flex priority' stuff which I am about to read up on? The LOCK MOV CR0 trick doesn't work on Intel CPUs. You should have space to patch in a JMP instruction though, and then you can shadow the TPR value and only do actual writes when the value changes. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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