[PATCH] arm64: KVM: Increase max VCPUs per-Guest to 8

[Andrew Jones]

On Fri, Sep 13, 2013 at 01:46:59PM +0100, Marc Zyngier wrote:
> On 11/09/13 14:02, Anup Patel wrote:
> > Current max VCPUs per-Guest is set to 4 which is preventing
> > us from creating a Guest (or VM) with 8 VCPUs on Host (e.g.
> > X-Gene Storm SOC) with 8 Host CPUs.
> > 
> > The correct value of max VCPUs per-Guest should be same as
> > the max CPUs supported by GICv2 which is 8 hence this patch
> > increases KVM_MAX_VCPUS to 8.
> 
> If anything, please make it configurable just like we have on 32bit. No
> reason to impose the extra overhead on everyone.

I have a couple patches I've been meaning to post, one of which does
this. I'll get them posted now.

drew

> 
> Thanks,
> 
> 	M.
> 
> > Signed-off-by: Anup Patel <anup.patel at linaro.org>
> > Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar at linaro.org>
> > ---
> >  arch/arm64/include/asm/kvm_host.h |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
> > index 0859a4d..60ef29e 100644
> > --- a/arch/arm64/include/asm/kvm_host.h
> > +++ b/arch/arm64/include/asm/kvm_host.h
> > @@ -26,7 +26,7 @@
> >  #include <asm/kvm_asm.h>
> >  #include <asm/kvm_mmio.h>
> >  
> > -#define KVM_MAX_VCPUS 4
> > +#define KVM_MAX_VCPUS 8
> >  #define KVM_USER_MEM_SLOTS 32
> >  #define KVM_PRIVATE_MEM_SLOTS 4
> >  #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
> > 
> 
> 
> -- 
> Jazz is not dead. It just smells funny...
> 
> 
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