From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:49259) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QNQy5-0003sn-8e for qemu-devel@nongnu.org; Fri, 20 May 2011 10:46:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QNQy3-0008Np-Vt for qemu-devel@nongnu.org; Fri, 20 May 2011 10:46:21 -0400 Received: from mail-gx0-f175.google.com ([209.85.161.175]:57919) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QNQy3-0008Nf-Tb for qemu-devel@nongnu.org; Fri, 20 May 2011 10:46:19 -0400 Received: by gxk3 with SMTP id 3so1785652gxk.34 for ; Fri, 20 May 2011 07:46:19 -0700 (PDT) Message-ID: <4DD67EB8.8050602@codemonkey.ws> Date: Fri, 20 May 2011 09:46:16 -0500 From: Anthony Liguori MIME-Version: 1.0 References: <1305814352-15044-1-git-send-email-avi@redhat.com> <1305814352-15044-2-git-send-email-avi@redhat.com> <4DD580FD.2030409@codemonkey.ws> <4DD6331E.8000105@redhat.com> <4DD67563.9080803@twiddle.net> <4DD67B2F.5080907@codemonkey.ws> <4DD67D50.30706@twiddle.net> In-Reply-To: <4DD67D50.30706@twiddle.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC v1] Add declarations for hierarchical memory region API List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Richard Henderson Cc: Avi Kivity , kvm@vger.kernel.org, qemu-devel@nongnu.org On 05/20/2011 09:40 AM, Richard Henderson wrote: > On 05/20/2011 07:31 AM, Anthony Liguori wrote: >> But is this a characteristic of devices or is this a characteristic of the chipset/CPU? > > Chipset. So if the chipset only allows accesses that are 64-bit, then you'll want to have hierarchical dispatch filter non 64-bit accesses and raise an MCE appropriately. So you don't need anything in MemoryRegion, you need code in the dispatch path. Regards, Anthony Liguori > > r~ >