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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 2B8BCC00A89 for ; Mon, 2 Nov 2020 14:57:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF18F2227F for ; Mon, 2 Nov 2020 14:57:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="S7FYYk9m" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726285AbgKBO5O (ORCPT ); Mon, 2 Nov 2020 09:57:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725791AbgKBO5O (ORCPT ); Mon, 2 Nov 2020 09:57:14 -0500 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7DBBC0617A6 for ; Mon, 2 Nov 2020 06:57:13 -0800 (PST) Received: from zn.tnic (p200300ec2f086a00a8f166ce5a4f9471.dip0.t-ipconnect.de [IPv6:2003:ec:2f08:6a00:a8f1:66ce:5a4f:9471]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 36F051EC0304; Mon, 2 Nov 2020 15:57:11 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1604329031; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=Uj21yLNOOWDgKG84369bmD5RvFVamSFmduJiyx5/LGk=; b=S7FYYk9mQZ/USXWKims1X0pCrretNRgZeL0TsEt9dC+19m/zsTXx7N6jefwe9TN+AqR8vN 38xm0DZOPBaXuAauavdFQuAblYf1Ep9Zzydfih9GADZ4p9PFkxkhqOv74XgximYk9btidA mJu9tugPorIIRLBzOv4gU1/8PUI0CUY= Date: Mon, 2 Nov 2020 15:56:57 +0100 From: Borislav Petkov To: shuo.a.liu@intel.com Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Greg Kroah-Hartman , "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , Sean Christopherson , Yu Wang , Reinette Chatre , Yakui Zhao , Dave Hansen , Dan Williams , Fengwei Yin , Zhi Wang , Zhenyu Wang , Arvind Sankar , Peter Zijlstra , Nick Desaulniers , Segher Boessenkool Subject: Re: [PATCH v5 04/17] x86/acrn: Introduce hypercall interfaces Message-ID: <20201102145657.GD15392@zn.tnic> References: <20201019061803.13298-1-shuo.a.liu@intel.com> <20201019061803.13298-5-shuo.a.liu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201019061803.13298-5-shuo.a.liu@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 19, 2020 at 02:17:50PM +0800, shuo.a.liu@intel.com wrote: > +static inline long acrn_hypercall0(unsigned long hcall_id) > +{ > + long result; > + > + asm volatile("movl %1, %%r8d\n\t" > + "vmcall\n\t" > + : "=a" (result) > + : "ir" (hcall_id) ^^ Not "irm"? Or simply "g" in that case? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette