Re: [PATCH 2/4] KVM: Add unified KVM_GET/SET_VCPU_STATE IOCTL

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On Thu, Oct 15, 2009 at 06:06:04PM +0200, Jan Kiszka wrote:
> Glauber Costa wrote:
> > On Thu, Oct 15, 2009 at 05:11:27PM +0900, Avi Kivity wrote:
> >> On 10/14/2009 01:06 AM, Jan Kiszka wrote:
> >>> Add a new IOCTL pair to retrieve or set the VCPU state in one chunk.
> >>> More precisely, the IOCTL is able to process a list of substates to be
> >>> read or written. This list is easily extensible without breaking the
> >>> existing ABI, thus we will no longer have to add new IOCTLs when we
> >>> discover a missing VCPU state field or want to support new hardware
> >>> features.
> >>>
> >>> This patch establishes the generic infrastructure for KVM_GET/
> >>> SET_VCPU_STATE and adds support for the generic substates REGS, SREGS,
> >>> FPU, and MP. To avoid code duplication, the entry point for the
> >>> corresponding original IOCTLs are converted to make use of the new
> >>> infrastructure internally, too.
> >>>
> >>>    
> >> One last thing - Documentation/kvm/api.txt needs updating.  Glauber,  
> >> this holds for your patches as well.
> > Now looking at it... you do realize that that file is terribly outdated, right?
> 
> At least it's terribly incomplete. I just decided to add my stuff at the
> bottom and wait for a bored soul to refactor, fix, extend, whatever this
> thing. :)
We'll probably clash, then =p.


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