Re: [RFT] kvm with Windows optimization

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Dong, Eddie wrote:
>>>
>>>       
>> Thanks for the hint; I'll add that.  I think Vista hits the tpr much
>> less frequently, so it can work well without the optimization.
>>
>>     
> Curious: How do u know ROM is mapped 0xf00000000 in Windows?
> Eddie
>
>
>     kvm_get_sregs(kvm_context, env->cpu_index, &sregs);
>
>     probe = (rip & 0xf0000000) + 0xe0000;
>     phys = map_addr(&sregs, probe, &perms);
>     if (phys != 0xe0000)
> 	return 0;
>     printf("bios ok at %lx\n", (long)probe);
>   

I checked :)

It's actually not mapped at 0xf0000000.  On normal Windows XP it is 
mapped at 0x80000000, with /3GB it is mapped at 0xe0000000.  The code 
checks it is within the same 256MB segment as the code that's hitting 
tpr.  It could probably be improved.

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


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