Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp1556492ybv; Thu, 20 Feb 2020 23:08:55 -0800 (PST) X-Google-Smtp-Source: APXvYqw99DxXTvDKTIyuPy4Vvf0d0NZHM7U2b5V9NWawxVT22ivAfw3zUSs5tKbzEVKo/pcGJOlx X-Received: by 2002:a05:6808:8e1:: with SMTP id d1mr835830oic.68.1582268935007; Thu, 20 Feb 2020 23:08:55 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1582268934; cv=none; d=google.com; s=arc-20160816; b=wKsDMrEXGseWsXKnlRzz6314zdy2t9nBPwcjTXwSliWqPQ38+JFI/u9Wdx/Ypt9jG6 tfEAdwGgdhPWEAJc7wG5a7Zy8a5oON7n+VNZjhqGmXjFuBjpXInv89te5juVGPPqIS+4 TrDn22GBCJKWbCFKXozC2j3vgpRFXfeWXmw38IllVMshQrq2S0+5uwI3cOaVVrVDzEPN s47VCLoZGURHWahKhcnTv02Mlm6rqtDCDwkoqrK1AZ80PgYt2HfhqV7uyjcLqcs7HrqE N08PC7X//u/wlpXgsVX5wBLGhD5/nga09pHrH58ux2/BznNwPQuKJ/w+jU0m94aGl4Xb lwjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=W9IzvQZswFeza4ciTw+EwVg/OI28pfMOm5823nYdsfg=; b=CtFo2RZzeLT1aZk5ULv6pCNHj//G8Ax3ehcrvdvGrKBRqSPBP87btWmLX3WSPXTWnI ZJB9ZHcpbm7q9mArDuXRNyxnCi+26b4BseY6ERw8Pnilxzrub4hOgh+Vj1c758DSZjvc DMsy7zp+Fx0eTZCioPRnsm2amwqCZMmK7shV/yoRdRuiEKSGV2ZNVdIi2a0jaJu0LqO1 lCCb+r8FmCXRgRzyCaOuPHxrGUUbMftTGw46eBuK/YNh7t18/SFoFYrxMWr3V0veaYez 1abRyXPpUUfCt3ltFNYI+uUu9245hSrUPqJAaiLbObEQqtPd5o9NPiwSe/ErCt9YGAHL /yVw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w5si1046967otq.238.2020.02.20.23.08.43; Thu, 20 Feb 2020 23:08:54 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727655AbgBUHH2 (ORCPT + 99 others); Fri, 21 Feb 2020 02:07:28 -0500 Received: from isilmar-4.linta.de ([136.243.71.142]:34462 "EHLO isilmar-4.linta.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727464AbgBUHH2 (ORCPT ); Fri, 21 Feb 2020 02:07:28 -0500 X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES Received: from light.dominikbrodowski.net (brodo.linta [10.1.0.102]) by isilmar-4.linta.de (Postfix) with ESMTPSA id 84A64200B3C; Fri, 21 Feb 2020 07:07:25 +0000 (UTC) Received: by light.dominikbrodowski.net (Postfix, from userid 1000) id 118ED20AAB; Fri, 21 Feb 2020 07:56:10 +0100 (CET) Date: Fri, 21 Feb 2020 07:56:10 +0100 From: Dominik Brodowski To: Brian Gerst Cc: linux-kernel@vger.kernel.org, x86@kernel.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" , Andy Lutomirski Subject: Re: [PATCH 5/5] x86: Drop asmlinkage from syscalls Message-ID: <20200221065610.GC3368@light.dominikbrodowski.net> References: <20200221050934.719152-1-brgerst@gmail.com> <20200221050934.719152-6-brgerst@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200221050934.719152-6-brgerst@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 21, 2020 at 12:09:34AM -0500, Brian Gerst wrote: > asmlinkage is no longer required since the syscall ABI is now fully under > x86 architecture control. This makes the 32-bit native syscalls a bit more > effecient by passing in regs via EAX instead of on the stack. > > Signed-off-by: Brian Gerst Reviewed-by: Dominik Brodowski Thanks, Dominik