On Mon, Jul 24, 2006 at 04:58:07PM -0700, H. Peter Anvin wrote:
> Rusty Russell wrote:
> >Roll all the cpuid asm into one __cpuid call. It's a little neater,
> >and also means only one place to patch for paravirtualization.
>
> The whole point of those is to avoid the unnecessary write to memory and
> pick it back up again. This patch reintroduces that ugliness.
Modern gcc should optimize this when it is inlined. If it didn't
most abstracted C++ code would be quite unhappy.
Also as far as I know there is only a single time critical CPUID
in the code and it ignores all output arguments.
-Andi
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