Re: question on #UD emulation

Avi Kivity
2007-12-16T15:04:56Z

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Dong, Eddie wrote:
> A little bit suspicion for the usage model too :(
> The CPUID feature list can't be changed dynamically, so I doutb
> if a real user will give up performance at beginning when he/she
> starts the guest for "maybe" future migration cross host platform.
>
> A VT or SVM enabled machine usually has many features
> which doesn't exist in the common feature list for both Intel & AMD,
> such as MMX/SSE2/SSE3. So the performance penalty could be big.
>

mmx/sse2/sse3 are actually common across intel/amd; the performance
difference should be minor (well, depending on the workload).

--
error compiling committee.c: too many arguments to function

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