From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 0/3] context_tracking: streamline code, avoid IRQ save/restore Date: Wed, 28 Oct 2015 03:05:29 +0100 Message-ID: <56302D69.8000101@redhat.com> References: <1445996397-32703-1-git-send-email-pbonzini@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Andy Lutomirski , Frederic Weisbecker , Rik van Riel , Paul McKenney To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Return-path: In-Reply-To: <1445996397-32703-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.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