From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7283BC43381 for ; Thu, 14 Feb 2019 14:52:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4310E2229F for ; Thu, 14 Feb 2019 14:52:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390741AbfBNOwD (ORCPT ); Thu, 14 Feb 2019 09:52:03 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:49998 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729010AbfBNOwD (ORCPT ); Thu, 14 Feb 2019 09:52:03 -0500 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1guIMj-00019c-Uy; Thu, 14 Feb 2019 15:51:54 +0100 Date: Thu, 14 Feb 2019 15:51:53 +0100 From: Sebastian Andrzej Siewior To: Borislav Petkov Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Andy Lutomirski , Paolo Bonzini , Radim =?utf-8?B?S3LEjW3DocWZ?= , kvm@vger.kernel.org, "Jason A. Donenfeld" , Rik van Riel , Dave Hansen Subject: Re: [PATCH 09/22] x86/fpu: Add (__)make_fpregs_active helpers Message-ID: <20190214145153.oeqlocjwqeaedlvq@linutronix.de> References: <20190109114744.10936-1-bigeasy@linutronix.de> <20190109114744.10936-10-bigeasy@linutronix.de> <20190128182349.GG20487@zn.tnic> <20190207104325.ai5fzaxa7xy7yydv@linutronix.de> <20190213093025.GA9683@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190213093025.GA9683@zn.tnic> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019-02-13 10:30:25 [+0100], Borislav Petkov wrote: > On Thu, Feb 07, 2019 at 11:43:25AM +0100, Sebastian Andrzej Siewior wrote: > > They are accessible inside the region. But they should not be touched by > > context switch code (and later BH). > > Is that what you meant? > > I just don't like that "changes" name. So when called, those functions > practically lock the FPU regs from being accessed by others. So with > > fpregs_lock > fpregs_unlock > > for example, is kinda clear what's going on and you don't have to wonder > what it does. renamed as suggested. Sebastian