From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-next-2.6 PATCH 3/3] ixgbevf: Cache PF ack bit in interrupt Date: Thu, 06 May 2010 00:32:20 -0700 (PDT) Message-ID: <20100506.003220.42791584.davem@davemloft.net> References: <20100506055703.8482.16515.stgit@localhost.localdomain> <20100506055748.8482.25239.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, gregory.v.rose@intel.com To: jeffrey.t.kirsher@intel.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:57730 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754604Ab0EFHcN (ORCPT ); Thu, 6 May 2010 03:32:13 -0400 In-Reply-To: <20100506055748.8482.25239.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Wed, 05 May 2010 22:57:49 -0700 > From: Greg Rose > > When the PF acks a message from the VF the VF gets an interrupt. It > must cache the ack bit so that polling SW will not miss the ack. Also > avoid reading the message buffer on acks because that also will clear > the ack bit. > > Signed-off-by: Greg Rose > Signed-off-by: Jeff Kirsher Applied.