From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: Re: [PATCH V3 0/8] macvtap/vhost TX zero copy support Date: Fri, 22 Apr 2011 10:31:48 -0700 Message-ID: <1303493508.10632.2.camel@localhost.localdomain> References: <1303328216.19336.18.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: David Miller , mst@redhat.com, Eric Dumazet , Avi Kivity , Arnd Bergmann , netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org To: Jon Mason Return-path: Received: from e39.co.us.ibm.com ([32.97.110.160]:46715 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756348Ab1DVRcA (ORCPT ); Fri, 22 Apr 2011 13:32:00 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On Thu, 2011-04-21 at 10:29 -0400, Jon Mason wrote: > Why are only these 3 drivers getting support? As far as I can tell, > the only requirement is HIGHDMA. If this is the case, is there really > a need for an additional flag to support this? If you can key off of > HIGHDMA, all devices that support this would get the benefit. Agreed. So far, I have only verified these three 10Gb NICs we have in our lab. We can enable all devices which support HIGHDMA. Thanks Shirley