Message ID | 20210415144413.962139913@linuxfoundation.org |
---|---|
State | New |
Headers | show
Return-Path: <stable-owner@kernel.org> 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 E7014C433B4 for <stable@archiver.kernel.org>; Thu, 15 Apr 2021 14:49:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE9C561029 for <stable@archiver.kernel.org>; Thu, 15 Apr 2021 14:49:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233718AbhDOOtg (ORCPT <rfc822;stable@archiver.kernel.org>); Thu, 15 Apr 2021 10:49:36 -0400 Received: from mail.kernel.org ([198.145.29.99]:36792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233699AbhDOOtb (ORCPT <rfc822;stable@vger.kernel.org>); Thu, 15 Apr 2021 10:49:31 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9C3D261029; Thu, 15 Apr 2021 14:49:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1618498148; bh=8TXkaDq9p8upES/NdQyeftTvbHiQJNlVZ3QKoPLpfn8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZDM57kFqdHySGceS5aP5+BkXszpY17IO5iR3qU5IAh7oJoH0E222+as73virlAMe6 hKlIjOMwHlaIYVNK/QpANAHssQhAG/+lCasE7ozqjy4Zalw/7lvwyZbiQ8skc17jAq /9ivMJDqSV8vaYcdQ/xJWfHU4sKkRtsmYsjzq8QQ= From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Alexander Gordeev <agordeev@linux.ibm.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Heiko Carstens <hca@linux.ibm.com>, Sasha Levin <sashal@kernel.org> Subject: [PATCH 4.4 19/38] s390/cpcmd: fix inline assembly register clobbering Date: Thu, 15 Apr 2021 16:47:13 +0200 Message-Id: <20210415144413.962139913@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210415144413.352638802@linuxfoundation.org> References: <20210415144413.352638802@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <stable.vger.kernel.org> X-Mailing-List: stable@vger.kernel.org |
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diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c index 7f768914fb4f..c15546c6fb66 100644 --- a/arch/s390/kernel/cpcmd.c +++ b/arch/s390/kernel/cpcmd.c @@ -37,10 +37,12 @@ static int diag8_noresponse(int cmdlen) static int diag8_response(int cmdlen, char *response, int *rlen) { + unsigned long _cmdlen = cmdlen | 0x40000000L; + unsigned long _rlen = *rlen; register unsigned long reg2 asm ("2") = (addr_t) cpcmd_buf; register unsigned long reg3 asm ("3") = (addr_t) response; - register unsigned long reg4 asm ("4") = cmdlen | 0x40000000L; - register unsigned long reg5 asm ("5") = *rlen; + register unsigned long reg4 asm ("4") = _cmdlen; + register unsigned long reg5 asm ("5") = _rlen; asm volatile( " sam31\n"