Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755271Ab0LMUVP (ORCPT ); Mon, 13 Dec 2010 15:21:15 -0500 Received: from kroah.org ([198.145.64.141]:32873 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755018Ab0LMUVP (ORCPT ); Mon, 13 Dec 2010 15:21:15 -0500 Date: Mon, 13 Dec 2010 12:18:43 -0800 From: Greg KH To: Hank Janssen Cc: "gregkh@suse.de" , "linux-kernel@vger.kernel.org" , "devel@linuxdriverproject.org" , "virtualization@lists.osdl.org" , Haiyang Zhang Subject: Re: [PATCH 1/1] hv: Use only one receive buffer and kmalloc on initialize Message-ID: <20101213201843.GA19409@kroah.com> References: <1292262350-29001-1-git-send-email-hjanssen@microsoft.com> <20101213183448.GA11745@kroah.com> <8AFC7968D54FB448A30D8F38F259C5622C0BB71F@TK5EX14MBXC116.redmond.corp.microsoft.com> <20101213194101.GA18431@kroah.com> <8AFC7968D54FB448A30D8F38F259C5622C0BC809@TK5EX14MBXC116.redmond.corp.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8AFC7968D54FB448A30D8F38F259C5622C0BC809@TK5EX14MBXC116.redmond.corp.microsoft.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1172 Lines: 30 On Mon, Dec 13, 2010 at 08:06:20PM +0000, Hank Janssen wrote: > > > > -----Original Message----- > > From: Greg KH [mailto:greg@kroah.com] > > Sent: Monday, December 13, 2010 11:41 AM > > > The current versions of Hyper-V support interrupt handling on CPU0 only. > > > I can make multiple buffers per channel, but because of Hyper-V > > > implementation It does not really make a difference. > > > > Then put a big fat note in there saying this, and that it will have to change if > > the hyperv channel ever changes. > > > > Hm, how will you handle things if the hyperv core changes and an old kernel > > is running this code where things were "assumed" about the reentrancy > > happening here? > > I will re-roll this patch to have a buffer per channel. It is a more elegant design > Even though Hyper-V behavior is not changing in Win8 for this. Win8, fine, but what about Win9? :) thanks for changing it. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/