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=-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=unavailable 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 5CF99C433B4 for ; Mon, 5 Apr 2021 09:12:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3663D61398 for ; Mon, 5 Apr 2021 09:12:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238875AbhDEJMF (ORCPT ); Mon, 5 Apr 2021 05:12:05 -0400 Received: from mail.kernel.org ([198.145.29.99]:54866 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238769AbhDEJI7 (ORCPT ); Mon, 5 Apr 2021 05:08:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1FCF961393; Mon, 5 Apr 2021 09:08:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1617613732; bh=chm6YtL0NmH9DtgHajEjtlF/dcJlt3FvkVNXFak/v0I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QhxqxaKLjKCrV96LN4pFNCtKB76kihTIeF3lLZOXOj1cgt2f4U4CNF1a+AIqy7B6I 0s4YF5mAeaxHvqKlwTcPiYSkfQDb7+K/McTgsC/taXKcwZ1xo/Ii7pkx5Ei3gKKn4c LIK8L/u+58iDgBMeYZIqwpZvHQtDnX0sn3fElUvM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Heiko Carstens Subject: [PATCH 5.10 070/126] s390/vdso: copy tod_steering_delta value to vdso_data page Date: Mon, 5 Apr 2021 10:53:52 +0200 Message-Id: <20210405085033.368322792@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210405085031.040238881@linuxfoundation.org> References: <20210405085031.040238881@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: X-Mailing-List: linux-kernel@vger.kernel.org From: Heiko Carstens commit 72bbc226ed2ef0a46c165a482861fff00dd6d4e1 upstream. When converting the vdso assembler code to C it was forgotten to actually copy the tod_steering_delta value to vdso_data page. Which in turn means that tod clock steering will not work correctly. Fix this by simply copying the value whenever it is updated. Fixes: 4bff8cb54502 ("s390: convert to GENERIC_VDSO") Cc: # 5.10 Signed-off-by: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- arch/s390/kernel/time.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -398,6 +398,7 @@ static void clock_sync_global(unsigned l tod_steering_delta); tod_steering_end = now + (abs(tod_steering_delta) << 15); vdso_data->arch_data.tod_steering_end = tod_steering_end; + vdso_data->arch_data.tod_steering_delta = tod_steering_delta; /* Update LPAR offset. */ if (ptff_query(PTFF_QTO) && ptff(&qto, sizeof(qto), PTFF_QTO) == 0)