From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751410AbbAMUGX (ORCPT ); Tue, 13 Jan 2015 15:06:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33573 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750841AbbAMUGW (ORCPT ); Tue, 13 Jan 2015 15:06:22 -0500 Message-ID: <54B57AAC.6020903@redhat.com> Date: Tue, 13 Jan 2015 15:06:04 -0500 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Oleg Nesterov CC: linux-kernel@vger.kernel.org, mingo@redhat.com, hpa@zytor.com, matt.fleming@intel.com, bp@suse.de, pbonzini@redhat.com, tglx@linutronix.de, luto@amacapital.net Subject: Re: [RFC PATCH 04/11] x86,fpu: defer FPU restore until return to userspace References: <1421012793-30106-1-git-send-email-riel@redhat.com> <1421012793-30106-5-git-send-email-riel@redhat.com> <20150113171134.GA27519@redhat.com> <54B55BE7.1020107@redhat.com> <20150113182239.GA30475@redhat.com> <20150113183003.GB30475@redhat.com> In-Reply-To: <20150113183003.GB30475@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 01/13/2015 01:30 PM, Oleg Nesterov wrote: > On 01/13, Oleg Nesterov wrote: >> >> But yes, I think we need the per-cpu "in_kernel_fpu" and >> irq_fpu_usable() must die. Please look at >> http://marc.info/?l=linux-kernel&m=14096628660929 This link does not work for me. I wonder if that email is not on the marc.info node I managed to send my http request to... > Plus I think we need this to fix the race with > math_state_restore()... Please see > http://marc.info/?l=linux-kernel&m=140992479607206 > > Unfortunately I forgot other problems I found in this area... And I > completely forgot the plan I had in mind ;) That I can certainly merge into my series. - -- All rights reversed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUtXqsAAoJEM553pKExN6DESsH/iVrj6VEpV1gqyxB7T0cC0wr UWjPP5OyV2JRkOronbl1iA9YMhN5WUfhvdWph4nauL0nR+IOip2qRqCmQN6NG4yj A9u3NTDzKpXCBaBf+Ub5yPBv/QESvGomxUQmEYYdgxW6OfZtp0apouSPIhCAwWMq XPKVXyjl0AH30+tV9oMnhhnXuwdG+ojNDFK8xeMG15gBPP8LncVYkmlgTeD4Kzca VPw83KxFqNekEA7TPboBkjqDEfckT8tTsutlOMWmBnyI51duuMX3qc4xoJfCdmNB +f8TYL0Y/7RKF2RS9qDXZRk1fakQHbzCaswpRIs7522zj49tkrGi4AFmUaOZ+0k= =7eRE -----END PGP SIGNATURE-----