From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:58093) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJv7S-0005XI-OM for qemu-devel@nongnu.org; Tue, 10 May 2011 18:09:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QJv7R-0005Nw-UO for qemu-devel@nongnu.org; Tue, 10 May 2011 18:09:30 -0400 Received: from mail-iw0-f173.google.com ([209.85.214.173]:59392) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJv7R-0005Ns-Jq for qemu-devel@nongnu.org; Tue, 10 May 2011 18:09:29 -0400 Received: by iwl42 with SMTP id 42so6641095iwl.4 for ; Tue, 10 May 2011 15:09:29 -0700 (PDT) Sender: Richard Henderson Message-ID: <4DC9B795.2030904@twiddle.net> Date: Tue, 10 May 2011 15:09:25 -0700 From: Richard Henderson MIME-Version: 1.0 References: <1304976889-29675-1-git-send-email-rth@twiddle.net> <201105102233.28788.paul@codesourcery.com> In-Reply-To: <201105102233.28788.paul@codesourcery.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 00/35] Alpha system emulation, v4 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paul Brook Cc: qemu-devel@nongnu.org On 05/10/2011 02:33 PM, Paul Brook wrote: > There should be nothing special about virtio-pci. These devices should access > memory in exactly the same way as any other PCI device. Bypassing the normal > PCI iommu is IMO a serious bug. I suspect that the argument is that virtio is implemented on several busses, and ignoring any bus-specific stuff means that there's less need for any code differences. It doesn't bother me either way, so long as I know what to expect. r~