From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:45016) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJuYe-0001Fj-12 for qemu-devel@nongnu.org; Tue, 10 May 2011 17:33:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QJuYd-0008H0-7m for qemu-devel@nongnu.org; Tue, 10 May 2011 17:33:31 -0400 Received: from mail.codesourcery.com ([38.113.113.100]:46411) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QJuYd-0008Gs-03 for qemu-devel@nongnu.org; Tue, 10 May 2011 17:33:31 -0400 From: Paul Brook Date: Tue, 10 May 2011 22:33:28 +0100 References: <1304976889-29675-1-git-send-email-rth@twiddle.net> In-Reply-To: <1304976889-29675-1-git-send-email-rth@twiddle.net> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201105102233.28788.paul@codesourcery.com> Subject: Re: [Qemu-devel] [PATCH 00/35] Alpha system emulation, v4 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Richard Henderson > Since virtio devices intentionally access memory directly, we > are not actually dependant on the iommu patches in order to > make progress. Merely fixing the PCI interrupt setup was > enough to get the virtio-pci interface working. 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. Paul