Re: [PATCH RFC 0/5] Eliminate double-copying of FP/VMX/VSX state

[Michael Neuling <mikey@neuling.org>]

Alexander Graf <agraf@suse.de> wrote:

> 
> On 09.09.2013, at 09:28, Michael Neuling wrote:
> 
> >> At present, PR KVM and BookE KVM does multiple copies of FP and
> >> related state because of the way that they use the arrays in the
> >> thread_struct as an intermediate staging post for the state.  They do
> >> this so that they can use the existing system functions for loading
> >> and saving state, and so that they can keep guest state in the CPU
> >> registers while executing general kernel code.
> >> 
> >> This patch series reorganizes things so that KVM and the main kernel
> >> use the same representation for FP/VMX/VSX state, and so that guest
> >> state can be loaded/save directly from/to the vcpu struct instead of
> >> having to go via the thread_struct.  This simplifies things and should
> >> be a little faster.
> >> 
> >> This series is against Alex Graf's kvm-ppc-queue branch plus my recent
> >> series of 23 patches to make PR and HV KVM coexist.
> > 
> > This is great!
> > 
> > Alex, can you pull this into your tree?  
> 
> I never apply RFC patches if I can avoid it. Paul, if you think
> they're ready for inclusion, please repost them as actual patches.

Arrh, good point.  I'll talk to paulus about reposting them.  

Your kvm-ppc-queue branch on github seems to be based on 3.11-rc1. Is
that the tree we should be aiming for currently?

Mikey