From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33145) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDqDk-0003Gi-Pt for qemu-devel@nongnu.org; Fri, 17 Jun 2016 05:37:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bDqDe-0007iq-Rw for qemu-devel@nongnu.org; Fri, 17 Jun 2016 05:37:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36819) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bDqDe-0007il-Me for qemu-devel@nongnu.org; Fri, 17 Jun 2016 05:37:42 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A85623B720 for ; Fri, 17 Jun 2016 09:37:41 +0000 (UTC) Date: Fri, 17 Jun 2016 10:37:38 +0100 From: "Dr. David Alan Gilbert" Message-ID: <20160617093737.GF2273@work-vm> References: <1466097133-5489-1-git-send-email-dgilbert@redhat.com> <1466097133-5489-5-git-send-email-dgilbert@redhat.com> <20160616202449.GY18662@thinpad.lan.raisama.net> <20160617081505.GA2273@work-vm> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160617081505.GA2273@work-vm> Subject: Re: [Qemu-devel] [PATCH 4/5] x86: Allow physical address bits to be set List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Eduardo Habkost Cc: qemu-devel@nongnu.org, pbonzini@redhat.com, aarcange@redhat.com * Dr. David Alan Gilbert (dgilbert@redhat.com) wrote: > * Eduardo Habkost (ehabkost@redhat.com) wrote: > > On Thu, Jun 16, 2016 at 06:12:12PM +0100, Dr. David Alan Gilbert (git) wrote: > > The existing 40-bit default looks like a problem for 36-bit > > systems. Do you know what kind of systems have 36 bits only? Only > > old ones, or recent ones too? If only old ones, how old? > > My Sandy Bridge (~2.5 year old) laptop is 36 bits; I've seen > some other single-socket 39bit machines (Ivy bridge and I think newer). and it looks like the single socket Xeons are as well; Xeon E3-1225 I just found has 36 bit physical. Dave -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK