From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: pv 2.6.31 (kernel.org) and save/migrate fails, domU BUG Date: Mon, 23 Nov 2009 16:44:36 +0000 Message-ID: <1258994676.7590.81.camel@zakaz.uk.xensource.com> References: <20091108154153.GM1434@reaktio.net> <693ea516-aa5b-4f82-ad48-1bd51cfa3480@default> <20091108172747.GR1434@reaktio.net> <20091110100806.GE16033@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20091110100806.GE16033@reaktio.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Pasi =?ISO-8859-1?Q?K=E4rkk=E4inen?= Cc: Dan Magenheimer , "Xen-Devel (E-mail)" , Jeremy Fitzhardinge List-Id: xen-devel@lists.xenproject.org On Tue, 2009-11-10 at 10:08 +0000, Pasi K=C3=A4rkk=C3=A4inen wrote: > Hello, >=20 > Jeremy: Here's summary about these save/restore problems > using upstream Linux 2.6.31.5 PV guest. >=20 > For me: > - I can "xm save" + "xm restore" UP guest, but I get non-fatal > BUG in the guest kernel, see [1]. > - "xm save" fails for SMP guest with "failed to get the suspend evtchn= port", see [2]. >=20 > For Dan: > - "xm save" works for UP guest, but "xm restore" doesn't, giving > infinite xen_sched_clock related dumps in the guest kernel, see [3]. The runstate fix I sent to the list last week should help with this one. > - "xm save" for SMP guest fails, it never ends. I suspect this > is the same problem I'm seeing. I'm seeing this (or something very like it) too. At the moment it looks as if drivers/xen/manage.c:do_suspend is getting as far as the stop_machine() call but I am never seeing to the xen_suspend() callback. Ian.