From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41338) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Umjex-0000UK-9n for qemu-devel@nongnu.org; Wed, 12 Jun 2013 07:56:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Umjet-0003ue-0D for qemu-devel@nongnu.org; Wed, 12 Jun 2013 07:56:15 -0400 Received: from nat28.tlf.novell.com ([130.57.49.28]:56508) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Umjes-0003uF-Mr for qemu-devel@nongnu.org; Wed, 12 Jun 2013 07:56:10 -0400 Message-Id: <51B87DF802000078000DD8C0@nat28.tlf.novell.com> Date: Wed, 12 Jun 2013 12:56:08 +0100 From: "Jan Beulich" References: <51B1FF50.90406@eu.citrix.com> <403610A45A2B5242BD291EDAE8B37D3010E56731@SHSMSX102.ccr.corp.intel.com> <51B83E7A02000078000DD6E9@nat28.tlf.novell.com> <1371025885.24512.357.camel@zakaz.uk.xensource.com> <51B8554602000078000DD783@nat28.tlf.novell.com> <1371028940.24512.377.camel@zakaz.uk.xensource.com> <51B8646702000078000DD7EA@nat28.tlf.novell.com> <1371036201.24512.413.camel@zakaz.uk.xensource.com> In-Reply-To: <1371036201.24512.413.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Subject: Re: [Qemu-devel] [Xen-devel] [BUG 1747]Guest could't find bootable device with memory more than 3600M List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Ian Campbell Cc: Tim Deegan , Yongjie Ren , yanqiangjun@huawei.com, Keir Fraser , hanweidong@huawei.com, George Dunlap , Xudong Hao , Stefano Stabellini , luonengjun@huawei.com, qemu-devel@nongnu.org, wangzhenguo@huawei.com, xiaowei.yang@huawei.com, arei.gonglei@huawei.com, Paolo Bonzini , YongweiX Xu , SongtaoX Liu , "xen-devel@lists.xensource.com" >>> On 12.06.13 at 13:23, Ian Campbell wrote: > On Wed, 2013-06-12 at 11:07 +0100, Jan Beulich wrote: >> As there's no accessible guest kernel command for HVM guests, >> did you mean to require the guest admin to put something on the >> command line manually? >=20 > Yes, as a workaround for this shortcoming of 4.3, not as a long term > solution. It's only people using passthrough with certain devices with > large BARs who will ever trip over this, right? Yes. >> And then - this might cover Linux, but what about other OSes, >> namely Windows? >=20 > True, I'm not sure if/how this can be done. >=20 > The only reference I could find was at > http://windows.microsoft.com/en-id/windows7/using-system-configuration=20= > which says under "Advanced boot options": > PCI Lock. Prevents Windows from reallocating I/O and IRQ > resources on the PCI bus. The I/O and memory resources set by > the BIOS are preserved. >=20 > Which seems to suggest the default is to reallocate, but I don't know. Without having known of this option, I would take it as "may", not "will" reallocate. Jan From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [Xen-devel] [BUG 1747]Guest could't find bootable device with memory more than 3600M Date: Wed, 12 Jun 2013 12:56:08 +0100 Message-ID: <51B87DF802000078000DD8C0@nat28.tlf.novell.com> References: <51B1FF50.90406@eu.citrix.com> <403610A45A2B5242BD291EDAE8B37D3010E56731@SHSMSX102.ccr.corp.intel.com> <51B83E7A02000078000DD6E9@nat28.tlf.novell.com> <1371025885.24512.357.camel@zakaz.uk.xensource.com> <51B8554602000078000DD783@nat28.tlf.novell.com> <1371028940.24512.377.camel@zakaz.uk.xensource.com> <51B8646702000078000DD7EA@nat28.tlf.novell.com> <1371036201.24512.413.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1371036201.24512.413.camel@zakaz.uk.xensource.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org To: Ian Campbell Cc: Tim Deegan , Yongjie Ren , yanqiangjun@huawei.com, Keir Fraser , hanweidong@huawei.com, George Dunlap , Xudong Hao , Stefano Stabellini , luonengjun@huawei.com, qemu-devel@nongnu.org, wangzhenguo@huawei.com, xiaowei.yang@huawei.com, arei.gonglei@huawei.com, Paolo Bonzini , YongweiX Xu , SongtaoX Liu , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org >>> On 12.06.13 at 13:23, Ian Campbell wrote: > On Wed, 2013-06-12 at 11:07 +0100, Jan Beulich wrote: >> As there's no accessible guest kernel command for HVM guests, >> did you mean to require the guest admin to put something on the >> command line manually? >=20 > Yes, as a workaround for this shortcoming of 4.3, not as a long term > solution. It's only people using passthrough with certain devices with > large BARs who will ever trip over this, right? Yes. >> And then - this might cover Linux, but what about other OSes, >> namely Windows? >=20 > True, I'm not sure if/how this can be done. >=20 > The only reference I could find was at > http://windows.microsoft.com/en-id/windows7/using-system-configuration=20= > which says under "Advanced boot options": > PCI Lock. Prevents Windows from reallocating I/O and IRQ > resources on the PCI bus. The I/O and memory resources set by > the BIOS are preserved. >=20 > Which seems to suggest the default is to reallocate, but I don't know. Without having known of this option, I would take it as "may", not "will" reallocate. Jan