From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 112746B0071 for ; Sun, 10 Oct 2010 12:18:13 -0400 (EDT) Date: Sun, 10 Oct 2010 18:17:59 +0200 From: Gleb Natapov Subject: Re: [PATCH v6 02/12] Halt vcpu if page it tries to access is swapped out. Message-ID: <20101010161759.GT2397@redhat.com> References: <1286207794-16120-1-git-send-email-gleb@redhat.com> <1286207794-16120-3-git-send-email-gleb@redhat.com> <4CAD97D0.70100@redhat.com> <20101007174716.GD2397@redhat.com> <4CB0B4BA.5010901@redhat.com> <20101010072946.GJ2397@redhat.com> <4CB1E1ED.6050405@redhat.com> <4CB1E22F.9060008@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CB1E22F.9060008@redhat.com> Sender: owner-linux-mm@kvack.org To: Avi Kivity Cc: kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, mingo@elte.hu, a.p.zijlstra@chello.nl, tglx@linutronix.de, hpa@zytor.com, riel@redhat.com, cl@linux-foundation.org, mtosatti@redhat.com List-ID: On Sun, Oct 10, 2010 at 05:56:31PM +0200, Avi Kivity wrote: > On 10/10/2010 05:55 PM, Avi Kivity wrote: > >>There is special completion that tells guest to wake all sleeping tasks > >>on vcpu. It is delivered after migration on the destination. > >> > >> > > > >Yes, I saw. > > > >What if you can't deliver it? is it possible that some other vcpu > >will start receiving apfs that alias the old ones? Or is the > >broadcast global? > > > > And, is the broadcast used only for migrations? > Any time apf is enabled on vcpu broadcast is sent to the vcpu. Guest should be careful here and do not write to apf msr without a reason. -- Gleb. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org