linux-kernel - Re: [PATCH 03/11] Handle asynchronous page fault in a PV guest.

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Message-ID: <20091103142533.GN27911@redhat.com>
Date:	Tue, 3 Nov 2009 16:25:33 +0200
From:	Gleb Natapov <gleb@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
Cc:	kvm@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/11] Handle asynchronous page fault in a PV guest.

On Tue, Nov 03, 2009 at 12:14:23PM -0200, Marcelo Tosatti wrote:
> On Sun, Nov 01, 2009 at 01:56:22PM +0200, Gleb Natapov wrote:
> > Asynchronous page fault notifies vcpu that page it is trying to access
> > is swapped out by a host. In response guest puts a task that caused the
> > fault to sleep until page is swapped in again. When missing page is
> > brought back into the memory guest is notified and task resumes execution.
> 
> Can't you apply this to non-paravirt guests, and continue to deliver
> interrupts while waiting for the swapin? 
> 
> It should allow the guest to schedule a different task.
But how can I make the guest to not run the task that caused the fault?

--
			Gleb.
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