Re: [Xen-devel] VCPU cores & sockets

[Ben Guthro <bguthro@xxxxxxxxxxxxxxx>]

so...if I read your patch, and the intel manual properly -
CPUID.4:EAX[31:26] + 1 is the number of cores...

...
#           '4:eax=0x3,ebx=0x0,ecx=0x0,edx=0x0',
#  '0x80000000:eax=0x3,ebx=0x0,ecx=0x0,edx=0x0']
...

This would set the EAX of leaf 4 to 3 - indicating a dual core processor?

Am I understanding that config file correctly?

Jean Guyader wrote on 06/17/2008 10:44 AM:
> Ben Guthro wrote:
> > Before I get to entrenched in the ACPI code - I thought I'd ping the 
> > community to make sure nobody else has investigated this already -
> > Can we present cores vs sockets for guest VCPUs?
> > Right now, the number of total processors can be specified, but can 
> > we specify cores per socket?
> > I see this potentially being an hvmloader function, as part of its 
> > acpi build code.
> > Could this be accomplished more generally?
> Ben,
>
> This already exists, It's supported via a CPUID configuration.
> Right now there are just some comments in the xmexample.hvm file.
>
> I think it would be better to have an entry in the config file like 
> you suggest. I will work on that.
> Cheers,
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