linux-kernel - Re: [PATCH v4 08/12] Inject asynchronous page fault into a guest if page is swapped out.

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Message-ID: <4C354F67.3090404@redhat.com>
Date:	Thu, 08 Jul 2010 00:09:11 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Gleb Natapov <gleb@...hat.com>
CC:	kvm@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, avi@...hat.com, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, hpa@...or.com,
	cl@...ux-foundation.org, mtosatti@...hat.com
Subject: Re: [PATCH v4 08/12] Inject asynchronous page fault into a guest
 if page is swapped out.

On 07/06/2010 12:24 PM, Gleb Natapov wrote:
> If guest access swapped out memory do not swap it in from vcpu thread
> context. Setup slow work to do swapping and send async page fault to
> a guest.
>
> Allow async page fault injection only when guest is in user mode since
> otherwise guest may be in non-sleepable context and will not be able to
> reschedule.
>
> Signed-off-by: Gleb Natapov<gleb@...hat.com>

Acked-by: Rik van Riel <riel@...hat.com>

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