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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 B23ABC76186 for ; Wed, 24 Jul 2019 19:43:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 85829229F4 for ; Wed, 24 Jul 2019 19:43:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563997393; bh=OoLstCwrj4LwdSUJRZg8bJXqPiWJi3vK9rLCWGtd5fA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=t2sB5/Gkexn/kse0j8KbcqEH1oU0mZ+COPijZOfx26lzvo0ktYrvtE6Wb80Gia42P QrZpHldrshx25JQJp8FuHWAOJTmb+UmPR+u/GdgrFm6QDB14nWAP/KnqObkGU/S3sB N/a8/4Ksdo1yL6n1uQsjk9jpGfuEX0XeBmUJ5Y/Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390503AbfGXTnL (ORCPT ); Wed, 24 Jul 2019 15:43:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:45034 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390475AbfGXTnE (ORCPT ); Wed, 24 Jul 2019 15:43:04 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 88EEA21873; Wed, 24 Jul 2019 19:43:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563997384; bh=OoLstCwrj4LwdSUJRZg8bJXqPiWJi3vK9rLCWGtd5fA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S0mH8cjiwgvFTyODDIEpEq8VZOonm46WMwXwKIrNtdG3UtPizrPfM0H4oXzf2j/rb zRHGNbBtnY/5WLhBXGjfmnwqoeb4oN/kCuJ3VSaVuNJKDmDx2aj3j4o0/hw9Stq6XK y0LIN4X9jDKcp+7rR7O3/XyN1JVhPJc25n+Ig7Q4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Athira Rajeev , Madhavan Srinivasan , Nicholas Piggin , Michael Ellerman Subject: [PATCH 5.2 391/413] powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. Date: Wed, 24 Jul 2019 21:21:22 +0200 Message-Id: <20190724191802.842404671@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191735.096702571@linuxfoundation.org> References: <20190724191735.096702571@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Athira Rajeev commit f5a9e488d62360c91c5770bd55a0b40e419a71ce upstream. commit 10d91611f426 ("powerpc/64s: Reimplement book3s idle code in C") reimplemented book3S code to pltform/powernv/idle.c. But when doing so missed to add the per-thread LDBAR update in the core_woken path of the power9_idle_stop(). Patch fixes the same. Fixes: 10d91611f426 ("powerpc/64s: Reimplement book3s idle code in C") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Athira Rajeev Signed-off-by: Madhavan Srinivasan Reviewed-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190702105836.26695-1-maddy@linux.vnet.ibm.com Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/powernv/idle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -758,7 +758,6 @@ static unsigned long power9_idle_stop(un mtspr(SPRN_PTCR, sprs.ptcr); mtspr(SPRN_RPR, sprs.rpr); mtspr(SPRN_TSCR, sprs.tscr); - mtspr(SPRN_LDBAR, sprs.ldbar); if (pls >= pnv_first_tb_loss_level) { /* TB loss */ @@ -790,6 +789,7 @@ core_woken: mtspr(SPRN_MMCR0, sprs.mmcr0); mtspr(SPRN_MMCR1, sprs.mmcr1); mtspr(SPRN_MMCR2, sprs.mmcr2); + mtspr(SPRN_LDBAR, sprs.ldbar); mtspr(SPRN_SPRG3, local_paca->sprg_vdso);