From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCH V2] Add flag to start info regarding virtual mapped p2m list Date: Wed, 4 Mar 2015 10:59:57 +0000 Message-ID: <54F6E5AD.4060205@citrix.com> References: <1425374993-32028-1-git-send-email-jgross@suse.com> <54F59ABD02000078000658FB@suse.com> <54F58DA1.5000401@suse.com> <54F6D73802000078000660CF@mail.emea.novell.com> <1425461748.25940.88.camel@citrix.com> <54F6E19D020000780006611E@mail.emea.novell.com> <1425463572.25940.107.camel@citrix.com> <54F6DC89.8050106@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1YT725-0003iW-Dn for xen-devel@lists.xenproject.org; Wed, 04 Mar 2015 11:00:05 +0000 In-Reply-To: <54F6DC89.8050106@suse.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Juergen Gross , Ian Campbell , Jan Beulich Cc: andrew.cooper3@citrix.com, tim@xen.org, keir@xen.org, ian.jackson@eu.citrix.com, xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org On 04/03/15 10:20, Juergen Gross wrote: > > I could, of course, wait with the flag bit until xl is ready and post > another kernel patch then. Unfortunately this would delay Linux support > for automatically be able to run as a pv-domain >500GB further, so I > strongly recommend accepting the interface change now. I suggested before: "If dom0, enable >512G. If domU, enable >512G if requested by command line option /or/ toolstack indicates that it supports the linear p2m." So this flag is only required to /automatically/ enable >512GB PV guests. You still need the manual (command line) override so this flag isn't needed until the toolstack actually supports the linear p2m, and the kernel support for this automatic enablement can be added later as well. David