On 05/06/2010 10:45 PM, Avi Kivity wrote:
All those control registers are annoying, we have cr1 and cr5-cr7
free, cr9-cr15 on x86_64, infinite msr space, and now we have XCRs.
Great.
Looking forward to YCR0.
I think I see the reason - xgetbv is unprivileged, so applications can
see what the OS supports instead of looking at cpuid and hoping.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
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