[v1][KVM][PATCH 1/1] kvm:ppc:booehv: direct ISI exception to Guest

[Caraman Mihai Claudiu-B02008]

> -----Original Message-----
> From: tiejun.chen [mailto:tiejun.chen at windriver.com]
> Sent: Thursday, May 09, 2013 2:40 PM
> To: Caraman Mihai Claudiu-B02008
> Cc: Wood Scott-B07421; linuxppc-dev at lists.ozlabs.org; agraf at suse.de; kvm-
> ppc at vger.kernel.org; kvm at vger.kernel.org
> Subject: Re: [v1][KVM][PATCH 1/1] kvm:ppc:booehv: direct ISI exception to
> Guest
> 
> On 05/09/2013 07:34 PM, Caraman Mihai Claudiu-B02008 wrote:
> >>>> VF stands for virtualization fault see MAS8[VF] and we may use it
> for
> >> virtualized
> >>
> >> Looks KVM PPC have no this mechanism currently since I don't find
> MAS8_VF
> >> is
> >> used in kernel, right?
> >
> > Yes but 'we may use it' in the feature, I have a functional POC with
> VF.
> 
> Any IO performance to be improved with this POC?

VF approach puts more stress on HW TLB so I did not advance with performance
measurements though it may worth to do it.

-Mike