From patchwork Fri Dec 31 17:00:20 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Kevin O'Connor <kevin@koconnor.net>
X-Patchwork-Id: 442361
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oBVIORnq017492
	for <patchwork-kvm@patchwork.kernel.org>;
	Fri, 31 Dec 2010 18:24:35 GMT
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753301Ab0LaRAY (ORCPT
	<rfc822;patchwork-kvm@patchwork.kernel.org>);
	Fri, 31 Dec 2010 12:00:24 -0500
Received: from mail-qy0-f181.google.com ([209.85.216.181]:60203 "EHLO
	mail-qy0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752990Ab0LaRAY (ORCPT <rfc822; kvm@vger.kernel.org>);
	Fri, 31 Dec 2010 12:00:24 -0500
Received: by qyk12 with SMTP id 12so13397395qyk.19
	for <kvm@vger.kernel.org>; Fri, 31 Dec 2010 09:00:23 -0800 (PST)
Received: by 10.224.6.135 with SMTP id 7mr16546828qaz.200.1293814823420;
	Fri, 31 Dec 2010 09:00:23 -0800 (PST)
Received: from localhost
	(207-172-165-101.c3-0.avec-ubr1.nyr-avec.ny.cable.rcn.com
	[207.172.165.101]) by mx.google.com with ESMTPS id
	p13sm10109710qcu.41.2010.12.31.09.00.21
	(version=TLSv1/SSLv3 cipher=RC4-MD5);
	Fri, 31 Dec 2010 09:00:21 -0800 (PST)
Date: Fri, 31 Dec 2010 12:00:20 -0500
From: "Kevin O'Connor" <kevin@koconnor.net>
To: Avi Kivity <avi@redhat.com>
Cc: Alexander Graf <agraf@suse.de>, Erik Brakkee <erik@brakkee.org>,
	Jan Kiszka <jan.kiszka@web.de>, kvm@vger.kernel.org
Subject: Re: USB Passthrough 1.1 performance problem...
Message-ID: <20101231170020.GA31885@morn.localdomain>
References: <4D04B645.3010100@brakkee.org> <4D0537A8.8000607@brakkee.org>
	<4D0549AA.2020007@web.de> <4D054D37.7040107@brakkee.org>
	<CC762BE0-21C1-4E98-B012-67729669054C@suse.de>
	<4D07409B.2080602@redhat.com>
MIME-Version: 1.0
Content-Disposition: inline
In-Reply-To: <4D07409B.2080602@redhat.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: kvm-owner@vger.kernel.org
Precedence: bulk
List-ID: <kvm.vger.kernel.org>
X-Mailing-List: kvm@vger.kernel.org
X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by
	milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]);
	Fri, 31 Dec 2010 18:24:35 +0000 (UTC)


--- a/src/pciinit.c
+++ b/src/pciinit.c
@@ -10,6 +10,7 @@
 #include "biosvar.h" // GET_EBDA
 #include "pci_ids.h" // PCI_VENDOR_ID_INTEL
 #include "pci_regs.h" // PCI_COMMAND
+#include "memmap.h" // PAGE_SIZE
 #include "dev-i440fx.h"
 
 #define PCI_ROM_SLOT 6
@@ -90,6 +91,8 @@ static int pci_bios_allocate_region(u16 bdf, int region_num)
             type = "prefmem";
             msg = "decrease BUILD_PCIMEM_SIZE and recompile. size %x";
         } else {
+            if (size < PAGE_SIZE)
+                size = PAGE_SIZE;
             r = &pci_bios_mem_region;
             type = "mem";
             msg = "increase BUILD_PCIMEM_SIZE and recompile.";