Re: [PATCH v10 4/6] arm: KVM: Add initial dirty page locking infrastructure

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On Thu, Sep 11, 2014 at 01:03:19PM -0700, Mario Smarduch wrote:
> On 09/10/2014 08:13 PM, Christoffer Dall wrote:
> > On Thu, Sep 04, 2014 at 10:25:43AM -0700, Mario Smarduch wrote:
> >> On 09/03/2014 08:29 PM, wanghaibin wrote:
> >>> On 2014/9/4 7:01, Mario Smarduch wrote:
> >>>
> >>>> On 09/02/2014 07:42 PM, wanghaibin wrote:
> >>>>> On 2014/8/27 8:04, Mario Smarduch wrote:
> >>>>>
> > 
> > [...]
> > 
> >>>>>
> >>>>>
> >>>>> About CONFIG_ARM , I suggest cancle this limmit..
> >>>>> I just implement a few interfaces for ARM64 , and tested this patch using VNC, it's work.
> >>>>>
> >>>> Yes I was planing to do that once ARMv7 and generic/arch split for
> >>>> dirty log and tlb flush functions are settled. I realize at this time 
> >>>> ARMv8 just needs it's own tlb flush and it's done. But I need a strong 
> >>>> test case before claiming ARMv8 support
> >>>>
> >>>> I have some ideas on testing it but migration is probably most
> >>>> reliable and the only use case really.
> >>>>
> >>>> Can you elaborate on your test environment for ARMv8 (you could
> >>>> email off-line if too long, also thanks for testing!). 
> > 
> > 
> > I don't mind merging this code for ARMv7 only.  For sure, Mario you
> > would need to test your setup with ARMv8 carefully before we could merge
> > this for v8, and we should revisit the pud_huge considerations for
> > ARMv8, although I suspect we're alright given we have similar code in
> > clear_pud_entry().
> 
> Yes a definitive test is needed to validate ARMv8 logging.
> Migration with a busy environment (lmbench, random dirty)
> does that on ARMv7. I'll work with wanhaibin check his environment,
> and start looking through QEMU ARMv8 migration status.
> 

Alex Bennee is working on this, but we're having some issues with the
GIC state.  Don't hold your breath, it may be a number of weeks before
we have it done.

I'll let you know as soon as we have.

-Christoffer
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