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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 0F52FC282DD for ; Tue, 7 Jan 2020 19:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D82C120848 for ; Tue, 7 Jan 2020 19:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728663AbgAGTok (ORCPT ); Tue, 7 Jan 2020 14:44:40 -0500 Received: from mail-qt1-f194.google.com ([209.85.160.194]:35323 "EHLO mail-qt1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728358AbgAGToj (ORCPT ); Tue, 7 Jan 2020 14:44:39 -0500 Received: by mail-qt1-f194.google.com with SMTP id e12so783859qto.2 for ; Tue, 07 Jan 2020 11:44:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=S9Z0mVFd2p1ZduER7Gd3T2LbO8+fNcpa0hKnMEswfbQ=; b=lSJgiO8089UpAtwUJI7TvS0d/uYTm6JLSGVRP6PE2Dn5xwVb1G+jKQtkRJjJJALCqk 1L/xlHA0rqUvSQOLOfiBWlyc0cCqFTcu6WWyyMKKhNi+VE8zYGnoVaSNp8MOssbrvATa vM4BNznD5Ooo3AkkRkdnueP8IuTM3jjO6519yNFM8MQgQCZSPc1rFNTUXvYKP7ijaSeJ y3NyipPOeyoxEQCGaYWmnR2jXr29L9KbZE4PQ4m6ftaF1H9NT1ISx4CmgYGcSjlla7mT uERal/5DGYECRrFbvqp6E+//BFf2WPXMT7NTjhvx0ZQrbnweKHiPI/N9hqZUv0w3FhBI 89Og== X-Gm-Message-State: APjAAAVTBuvLbZvkwao+PKAGrQzUy20Kj/SB0lx2/EGQpzwrXwQtchcW oAZEE5wwLUKOik6t8XlMFAs= X-Google-Smtp-Source: APXvYqyHfGfSsxR7jhJcSWqmGErVMmZtoEkd6N01QijnRO2clAtMjz4v9+klE3Mw0x9E3PUcL2SgnA== X-Received: by 2002:ac8:86b:: with SMTP id x40mr542439qth.366.1578426278502; Tue, 07 Jan 2020 11:44:38 -0800 (PST) Received: from rani.riverdale.lan ([2001:470:1f07:5f3::b55f]) by smtp.gmail.com with ESMTPSA id s20sm280137qkg.131.2020.01.07.11.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jan 2020 11:44:37 -0800 (PST) From: Arvind Sankar To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" Cc: x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] x86/boot/compressed/32: Simplify calculation of output address Date: Tue, 7 Jan 2020 14:44:34 -0500 Message-Id: <20200107194436.2166846-1-nivedita@alum.mit.edu> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Condense the calculation of decompressed kernel start a little. Signed-off-by: Arvind Sankar --- arch/x86/boot/compressed/head_32.S | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index f2dfd6d083ef..1cc55c79d1d0 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -240,11 +240,9 @@ SYM_FUNC_START_LOCAL_NOALIGN(.Lrelocated) /* push arguments for extract_kernel: */ pushl $z_output_len /* decompressed length, end of relocs */ - movl BP_init_size(%esi), %eax - subl $_end, %eax - movl %ebx, %ebp - subl %eax, %ebp - pushl %ebp /* output address */ + leal _end(%ebx), %eax + subl BP_init_size(%esi), %eax + pushl %eax /* output address */ pushl $z_input_len /* input_len */ leal input_data(%ebx), %eax -- 2.24.1