From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755090AbbJ1CFg (ORCPT ); Tue, 27 Oct 2015 22:05:36 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:33461 "EHLO mail-pa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751116AbbJ1CFf (ORCPT ); Tue, 27 Oct 2015 22:05:35 -0400 Subject: Re: [PATCH 0/3] context_tracking: streamline code, avoid IRQ save/restore To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org References: <1445996397-32703-1-git-send-email-pbonzini@redhat.com> Cc: Andy Lutomirski , Frederic Weisbecker , Rik van Riel , Paul McKenney From: Paolo Bonzini Message-ID: <56302D69.8000101@redhat.com> Date: Wed, 28 Oct 2015 03:05:29 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <1445996397-32703-1-git-send-email-pbonzini@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28/10/2015 02:39, Paolo Bonzini wrote: > The first two of these patches were posted last February, the last one > is new. Rik's old measurements were that it shaved around .3 microseconds > on each iteration of his KVM benchmark. > > I guess three days before the start of the merge window is not > the best time to post patches. However, I brought this series up at > kernel summit yesterday, and Andy's cleanups actually makes it trivial > to apply this to syscall entry. So here it is, perhaps it's worth it. > > Assuming it works, of course, because this is compile-tested only. :) Heh, Andy said it doesn't. :) However, we could still merge the first two patches for 4.4 since they have been tested. I can even take them myself if I get Acked-by. The third one will have to wait for 4.5. Thanks, Paolo