Messages in this thread | | | Date | Wed, 11 Apr 2012 12:15:08 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH 00/13] KVM: MMU: fast page fault |
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On 04/11/2012 04:47 AM, Marcelo Tosatti wrote: > On Tue, Apr 10, 2012 at 01:04:13PM +0300, Avi Kivity wrote: > > On 04/09/2012 10:46 PM, Marcelo Tosatti wrote: > > > Perhaps the mmu_lock hold times by get_dirty are a large component here? > > > > That's my concern, because it affects the scaling of migration for wider > > guests. > > > > > If that can be alleviated, not only RO->RW faults benefit. > > > > Those are the most common types of faults on modern hardware, no? > > Depends on your workload, of course. If there is memory pressure, > 0->PRESENT might be very frequent. My point is that reduction of > mmu_lock contention is a good thing overall. >
Agreed.
-- error compiling committee.c: too many arguments to function
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