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[Xen-devel] Re: x86 emulator and new isa additions



On 15/11/2011 13:53, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:

>> So, properly, I think the fact we already have a cpuid callback ought to be
>> sufficient to implement all the cpu_has functionality that the emulator
>> could want, perhaps hidden behind some helper/abstraction functions/macros.
> 
> Which may make it necessary to add cpuid callbacks to all emulator
> users (seems like only hvm currently has one). But it indeed looks like
> the right route to go, so I'll look into doing so.

Yes, probably. The CPUID emulation backend is similar across both PV and
HVM, so there shouldn't be much per-user shimming to be done.

 -- Keir



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