Re: VMI and kmap_atomic_pte paravirt_op

From: Ian Campbell
Date: Fri Feb 26 2010 - 04:04:44 EST


On Thu, 2010-02-25 at 20:32 +0000, Alok Kataria wrote:
> Hi Ian,
>
> On Thu, 2010-02-25 at 11:52 -0800, Ian Campbell wrote:
> > Hi Alok,
> >
> > How critical is the vmi_kmap_atomic_pte pv_mmu_op hook to VMI? Is it
> > required for correct functionality or is it simply an optimisation?
> >
> > We think we may be able to do away with the Xen version of the hook and
> > if VMI (which is deprecated) can live without it and you agree then I'll
> > cook up a patch to remove it altogether.
>
> As Jeremy suggests we will be fine with disabling high ptes for VMI.
> Thanks for doing this.

OK, I'll do that.

Thanks,
Ian.


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