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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 11D73C43331 for ; Sat, 4 Apr 2020 03:15:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7916206E2 for ; Sat, 4 Apr 2020 03:15:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Z7oS8zO1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726314AbgDDDPQ (ORCPT ); Fri, 3 Apr 2020 23:15:16 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:60880 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726186AbgDDDPQ (ORCPT ); Fri, 3 Apr 2020 23:15:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To: Subject:Sender:Reply-To:Content-ID:Content-Description; bh=ibkTI/yyTgRhpR95ppr6ajtD7LeL8TZWLWwT1L/4/y0=; b=Z7oS8zO1OCznvgpB0S548tE2FE fV4rCljvLaG2+ieGlEb7UzfiZkiPXP8SoK5pb3RUpXs0Y2iQypL8NzcANc/kfF/jdsuum2M2jdulg U9qvrCWDebhNxnzOcws+cp07Ab84DC3N/oNYeKq8HN1sBbOdssBfbY9m6dkN8mzM/b34Mg869mx4b SAz3VVXrNxYs2IwEYiS8pndoluZqJi7f53yL9jxkXHB1NhFKdiji2UO0dNIrEpGMQhBCu0amvENIH Pq/rjGbLfLozdgOH0uWCIBynJOAVc7mM1BqGV3PBvCwglZZIVV6v5WZG3O8QLuRxT56OY41BRuKgv LrlXk70Q==; Received: from [2601:1c0:6280:3f0:897c:6038:c71d:ecac] by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jKZH7-0006sn-MZ; Sat, 04 Apr 2020 03:15:13 +0000 Subject: Re: AMD DC graphics display code enables -mhard-float, -msse, -msse2 without any visible FPU state protection To: Masami Hiramatsu , Peter Zijlstra Cc: =?UTF-8?Q?Christian_K=c3=b6nig?= , Jann Horn , Harry Wentland , Leo Li , amd-gfx@lists.freedesktop.org, Alex Deucher , "David (ChunMing) Zhou" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , the arch/x86 maintainers , kernel list , Josh Poimboeuf , Andy Lutomirski , Arnaldo Carvalho de Melo References: <4c5fe55d-9db9-2f61-59b2-1fb2e1b45ed0@amd.com> <20200402141308.GB20730@hirez.programming.kicks-ass.net> <20200403142837.f61a18d7bd32fd73777479ad@kernel.org> <20200403112113.GN20730@hirez.programming.kicks-ass.net> <20200404120808.05e9aa61500265be2e031bd6@kernel.org> From: Randy Dunlap Message-ID: <3f5565d3-90a5-be3e-d79d-715d7b94880d@infradead.org> Date: Fri, 3 Apr 2020 20:15:11 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200404120808.05e9aa61500265be2e031bd6@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 4/3/20 8:08 PM, Masami Hiramatsu wrote: > +static inline int insn_is_fpu(struct insn *insn) > +{ > + if (!insn->opcode.got) > + insn_get_opcode(insn); > + if (inat_is_fpu(insn->attr)) { > + if (insn->attr & INAT_FPUIFVEX) > + return insn_is_avx(insn); > + return 1; > + } return 0; // ?? > +} > + -- ~Randy