From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y1XxW-0001m3-Oz for qemu-devel@nongnu.org; Thu, 18 Dec 2014 05:05:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y1XxS-0004OL-Bx for qemu-devel@nongnu.org; Thu, 18 Dec 2014 05:05:26 -0500 Received: from mx1.redhat.com ([209.132.183.28]:52902) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y1XxS-0004O7-4V for qemu-devel@nongnu.org; Thu, 18 Dec 2014 05:05:22 -0500 Date: Thu, 18 Dec 2014 10:13:07 +0008 From: Jason Wang Message-Id: <1418897107.6411.1@smtp.corp.redhat.com> In-Reply-To: <1418894539-13990-1-git-send-email-akong@redhat.com> References: <1418894539-13990-1-git-send-email-akong@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Subject: Re: [Qemu-devel] [PATCH 0/2] ignore bus master for e1000 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Amos Kong Cc: somlo@cmu.edu, marcel.a@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, mst@redhat.com On Thu, Dec 18, 2014 at 5:22 PM, Amos Kong wrote: > Win2012-64r2 guest doesn't set bus mastering correctly, > it caused guest network down, this patch ignored it for > e1000 nic for workarounding the guest issue. > > Patch 1 is an update version of: > http://lists.gnu.org/archive/html/qemu-devel/2014-12/msg00048.html > transmit packets are also defered in latest version. > > Amos Kong (1): > e1000: unconditionally enable bus mastering > > Michael S. Tsirkin (1): > e1000: defer packets until BM enabled > > hw/net/e1000.c | 34 +++++++++++++++++++++++++++++++++- > 1 file changed, 33 insertions(+), 1 deletion(-) > > -- > 2.1.0 Another question unrelated to this series: Does 82540EM still supported by Win2k12? The following link shows that 82540EM were not supported in Win2k12. https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProdId=983 The oldest 825x card supported by 2k12 seems 82574. https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=21694&lang=eng&ProdId=3189 If yes, workaround a buggy driver may be endless work in the future.