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=-11.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 9E105C2BA83 for ; Wed, 12 Feb 2020 12:04:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 79B7424681 for ; Wed, 12 Feb 2020 12:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728530AbgBLMEn (ORCPT ); Wed, 12 Feb 2020 07:04:43 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:48418 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728092AbgBLMEm (ORCPT ); Wed, 12 Feb 2020 07:04:42 -0500 Received: from [5.158.153.53] (helo=tip-bot2.lab.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1j1qkw-0003Zy-8B; Wed, 12 Feb 2020 13:04:38 +0100 Received: from [127.0.1.1] (localhost [IPv6:::1]) by tip-bot2.lab.linutronix.de (Postfix) with ESMTP id D45451C202A; Wed, 12 Feb 2020 13:04:37 +0100 (CET) Date: Wed, 12 Feb 2020 12:04:37 -0000 From: "tip-bot2 for Arvind Sankar" Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/boot] x86/boot/compressed/64: Use LEA to initialize boot stack pointer Cc: Arvind Sankar , Borislav Petkov , x86 , LKML In-Reply-To: <20200107194436.2166846-2-nivedita@alum.mit.edu> References: <20200107194436.2166846-2-nivedita@alum.mit.edu> MIME-Version: 1.0 Message-ID: <158150907763.411.16186019828079681497.tip-bot2@tip-bot2> X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the x86/boot branch of tip: Commit-ID: 48bfdb9deffdc6b683feb25e15f4f26aac503501 Gitweb: https://git.kernel.org/tip/48bfdb9deffdc6b683feb25e15f4f26aac503501 Author: Arvind Sankar AuthorDate: Tue, 07 Jan 2020 14:44:35 -05:00 Committer: Borislav Petkov CommitterDate: Wed, 12 Feb 2020 11:11:06 +01:00 x86/boot/compressed/64: Use LEA to initialize boot stack pointer It's shorter, and it's what is used in every other place, so make it consistent. Signed-off-by: Arvind Sankar Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200107194436.2166846-2-nivedita@alum.mit.edu --- arch/x86/boot/compressed/head_64.S | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 1f1f6c8..d1220de 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -81,9 +81,7 @@ SYM_FUNC_START(startup_32) subl $1b, %ebp /* setup a stack and make sure cpu supports long mode. */ - movl $boot_stack_end, %eax - addl %ebp, %eax - movl %eax, %esp + leal boot_stack_end(%ebp), %esp call verify_cpu testl %eax, %eax