From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934015AbbDVO4s (ORCPT ); Wed, 22 Apr 2015 10:56:48 -0400 Received: from www.sr71.net ([198.145.64.142]:47202 "EHLO blackbird.sr71.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932874AbbDVO4s (ORCPT ); Wed, 22 Apr 2015 10:56:48 -0400 Message-ID: <5537B6AD.6070507@sr71.net> Date: Wed, 22 Apr 2015 07:56:45 -0700 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Borislav Petkov , Oleg Nesterov CC: linux-kernel@vger.kernel.org, x86@kernel.org, tglx@linutronix.de, dave.hansen@linux.intel.com, riel@redhat.com, sbsiddha@gmail.com, luto@amacapital.net, mingo@redhat.com, hpa@zytor.com, fenghua.yu@intel.com Subject: Re: [PATCH 01/16] x86, fpu: wrap get_xsave_addr() to make it safer References: <20150401004623.894DF37A@viggo.jf.intel.com> <20150401004624.49096AD0@viggo.jf.intel.com> <20150422104047.GA6897@pd.tnic> <20150422131618.GA16785@redhat.com> <20150422133146.GE6897@pd.tnic> In-Reply-To: <20150422133146.GE6897@pd.tnic> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/22/2015 06:31 AM, Borislav Petkov wrote: > I read tsk_get_xsave_field(@tsk, ) as give me the xsave field of @tsk > but doing used_math() we're querying current and I'm not sure > > tsk == current > > in all the call sites of tsk_get_xsave_field(). There aren't that many call sites. :) But, yeah, tsk==current for all of them at the moment.