From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753407AbbBSUKt (ORCPT ); Thu, 19 Feb 2015 15:10:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48380 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752344AbbBSUKs (ORCPT ); Thu, 19 Feb 2015 15:10:48 -0500 Date: Thu, 19 Feb 2015 21:09:10 +0100 From: Oleg Nesterov To: Ingo Molnar Cc: Rik van Riel , dave.hansen@linux.intel.com, sbsiddha@gmail.com, luto@amacapital.net, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, fenghua.yu@intel.com, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 6/6] x86,fpu: remove redundant increments of fpu_counter Message-ID: <20150219200910.GA29373@redhat.com> References: <20150129210723.GA31584@redhat.com> <1422900051-10778-1-git-send-email-riel@redhat.com> <1422900051-10778-7-git-send-email-riel@redhat.com> <20150202183418.GA16547@redhat.com> <54CFC486.7080403@redhat.com> <20150218234003.GB7880@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150218234003.GB7880@gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Borislav, Ingo, On 02/19, Ingo Molnar wrote: > > Is there consensus on the first 5 patches? Yes, but perhaps you can also look at another series [PATCH 1/3] x86, fpu: __kernel_fpu_begin() should clear fpu_owner_task even if use_eager_fpu() http://marc.info/?l=linux-kernel&m=142169357231860&w=2 [PATCH 2/3] x86, fpu: always allow FPU in interrupt if use_eager_fpu() http://marc.info/?l=linux-kernel&m=142169359331866&w=2 [PATCH 3/3] x86, fpu: don't abuse FPU in kernel threads if use_eager_fpu() http://marc.info/?l=linux-kernel&m=142169360931869&w=2 ? (off course I will be happy to resend) It was sent before the recently applied changes. And in fact in theory 728e53fef429a0f "x86/fpu: Also check fpu_lazy_restore() when use_eager_fpu()" depends on 1/3 above. Oleg.