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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 9CE83C43215 for ; Fri, 22 Nov 2019 10:51:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7492E2084D for ; Fri, 22 Nov 2019 10:51:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574419881; bh=6r+JJYD0lQTpwxkp1+u+3SUOZCOH5567WtYs3wa8vqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=r1CZwAx2o9ND2uefG7rQSFo8eGdruVjOxtBQDK3F9ufvg9qc7a9BkStk2cqm73IA/ BHK7fpS73dFzuWk1sNXJPRFpfyAgC9XTCo9/vgm4LyRe2atxTUL9dvVwA8NYOKtFyi Q0j7W6Vy/jaNx67Xgc7yaMJb9R7+oBfwWUpuczio= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729123AbfKVKvU (ORCPT ); Fri, 22 Nov 2019 05:51:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:33876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729812AbfKVKvO (ORCPT ); Fri, 22 Nov 2019 05:51:14 -0500 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 9229C20637; Fri, 22 Nov 2019 10:51:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574419874; bh=6r+JJYD0lQTpwxkp1+u+3SUOZCOH5567WtYs3wa8vqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hADUbZKRrft3H3ca9qmmgG/sgDGGSQVN+HlZfPRWNkXM+fpha+3N2Bi21ThCLv4Z4 TxetfjeJM8FtysUUcuicPeusydPvRH2rEA5I2yS2887qrip2Q0lIkL9EiMPpFh3XiJ 8SdKtB+n1UJpwA3OdH+u/Uorp4/gJ+rm/wrM11z0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Naveen N. Rao" , Michael Ellerman , Sasha Levin Subject: [PATCH 4.14 039/122] powerpc/pseries: Fix DTL buffer registration Date: Fri, 22 Nov 2019 11:28:12 +0100 Message-Id: <20191122100753.187660927@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122100722.177052205@linuxfoundation.org> References: <20191122100722.177052205@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: 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