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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 32088C43331 for ; Wed, 13 Nov 2019 01:57:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F183F222D4 for ; Wed, 13 Nov 2019 01:57:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610234; bh=Az8WxDraHNcUFx9xR5GISRxf036B+CkXnCd+OMq09B0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kxkJwCVgsabkoCTYU8Oi0961MkfluWxDfq3o6ngXS2dYlEu8nZziAudlb3yma6KcE UnDqgzDKTmr4if+k4Zs1SboCGQJtBbV5xXryBOvWLKEYjhcamsoRhK8Aeyt5oN4EsH 8KqAehZHD7nVaBNqNX9IU/n7x4/5mZpczJ1ZRJbk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729708AbfKMB5M (ORCPT ); Tue, 12 Nov 2019 20:57:12 -0500 Received: from mail.kernel.org ([198.145.29.99]:50108 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729694AbfKMB5J (ORCPT ); Tue, 12 Nov 2019 20:57:09 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6B668222D4; Wed, 13 Nov 2019 01:57:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610228; bh=Az8WxDraHNcUFx9xR5GISRxf036B+CkXnCd+OMq09B0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vbWt39PQeHUj5mlJfvlXI/9etKvtBgJHKW1ZwTfXe3VWLepGxaK5bisIVXhVc4aNW ww2WxQZ50PGIwxIayNh2EUOu7eg+cNtpoT0ILGuu3tsp6YNLwHJoUSiRwXNl5dgtYk nj4wlYL3q1v7uOfiCUKGO57FgL+I7BSphncLoxFA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: "Naveen N. Rao" , Michael Ellerman , Sasha Levin , linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.14 031/115] powerpc/pseries: Fix DTL buffer registration Date: Tue, 12 Nov 2019 20:54:58 -0500 Message-Id: <20191113015622.11592-31-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191113015622.11592-1-sashal@kernel.org> References: <20191113015622.11592-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Naveen N. Rao" [ Upstream commit db787af1b8a6b4be428ee2ea7d409dafcaa4a43c ] When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set, we register the DTL buffer for a cpu when the associated file under powerpc/dtl in debugfs is opened. When doing so, we need to set the size of the buffer being registered in the second u32 word of the buffer. This needs to be in big endian, but we are not doing the conversion resulting in the below error showing up in dmesg: dtl_start: DTL registration for cpu 0 (hw 0) failed with -4 Fix this in the obvious manner. Fixes: 7c105b63bd98 ("powerpc: Add CONFIG_CPU_LITTLE_ENDIAN kernel config option.") Signed-off-by: Naveen N. Rao Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/platforms/pseries/dtl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/dtl.c b/arch/powerpc/platforms/pseries/dtl.c index 18014cdeb590a..c762689e0eb33 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -149,7 +149,7 @@ static int dtl_start(struct dtl *dtl) /* Register our dtl buffer with the hypervisor. The HV expects the * buffer size to be passed in the second word of the buffer */ - ((u32 *)dtl->buf)[1] = DISPATCH_LOG_BYTES; + ((u32 *)dtl->buf)[1] = cpu_to_be32(DISPATCH_LOG_BYTES); hwcpu = get_hard_smp_processor_id(dtl->cpu); addr = __pa(dtl->buf); -- 2.20.1