Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935119Ab2JaIcO (ORCPT ); Wed, 31 Oct 2012 04:32:14 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:53964 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935090Ab2JaIcL (ORCPT ); Wed, 31 Oct 2012 04:32:11 -0400 X-IronPort-AV: E=Sophos;i="4.80,685,1344211200"; d="scan'208";a="212957791" Message-ID: <1351672212.20470.7.camel@hastur.hellion.org.uk> Subject: Re: [Xen-devel] [PATCH] xen PVonHVM: require at least Xen 3.4 as dom0 From: Ian Campbell To: Olaf Hering CC: Pasi =?ISO-8859-1?Q?K=E4rkk=E4inen?= , Jeremy Fitzhardinge , "xen-devel@lists.xensource.com" , "linux-kernel@vger.kernel.org" , Konrad Rzeszutek Wilk Date: Wed, 31 Oct 2012 09:30:12 +0100 In-Reply-To: <20121030182859.GA8775@aepfle.de> References: <1351613105-24408-1-git-send-email-olaf@aepfle.de> <20121030181732.GZ8912@reaktio.net> <20121030182859.GA8775@aepfle.de> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.3-1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Originating-IP: [10.80.16.67] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1521 Lines: 43 On Tue, 2012-10-30 at 18:28 +0000, Olaf Hering wrote: > On Tue, Oct 30, Pasi Kärkkäinen wrote: > > > On Tue, Oct 30, 2012 at 05:05:05PM +0100, Olaf Hering wrote: > > > The XenPVHVM extensions have not been tested much on very old > > > hypervisors. At least Xen 3.4 gets some testing with the pvops kernel. > > > > > > Require at least Xen 3.4 for the PVonHVM extensions. If an older > > > hypervisor is detected the extensions will be disabled and the guest > > > will only see emulated hardware. > > > > > > Signed-off-by: Olaf Hering > > > > > > > IIRC upstream Linux PVonHVM drivers do work OK today on RHEL5 Xen, > > which advertises itself as Xen 3.1.2-based.. > > If thats the case, and a combination thats supposed to work, the patch > can be dropped if the hvmloader does really leave room at > FE700000-FE800000. If I understand correctly this requirements comes from the need to support moving the shared info page in order to support kexec? So could we do something more fine grained and limit only the kexec support (and therefore the movement of the SI into that range) to 3.4+? Ian. > > Olaf > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/