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=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 AAC0FC43331 for ; Wed, 13 Nov 2019 02:08:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B1FA206B6 for ; Wed, 13 Nov 2019 02:08:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610913; bh=HbgVx4qjb6kTQShWNZlxWmMuVhrxfteiZTihwmQgvoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=g19LpxCpcEXViSKF1Irh/HZnmPlQn2+i9XaRrX11h1ddLsYH/VGPu2rt/Mx9aRAxR Z8JqEf5gJQglF/j4KazNiwkZYqJv7GZhbRDhNBKznrdsXB+ITGVc0PpqEnFIFwCtz4 4OqbuLdkMGNVpYfzjeoQbfF2XjB2FIJWqVX/fR60= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728585AbfKMCIc (ORCPT ); Tue, 12 Nov 2019 21:08:32 -0500 Received: from mail.kernel.org ([198.145.29.99]:55004 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730345AbfKMCAC (ORCPT ); Tue, 12 Nov 2019 21:00:02 -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 94098222CF; Wed, 13 Nov 2019 02:00:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610402; bh=HbgVx4qjb6kTQShWNZlxWmMuVhrxfteiZTihwmQgvoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aadU0IQIT+HLt1mKlF9BASIMVAVA5teMW71EQJO79ZBICyyAprVPfxXuMBvoYMTZA Ze0Oxh2GeqqMIJZIXtuQkz9mDOFyQegUPkzWPtokwGaFmFiqGxko2x7745en4RZ/hA I9XvUCRzyUReXKR45zbWBmPJSJkgO3Tn+VuxElDQ= 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 4.9 19/68] powerpc/pseries: Fix DTL buffer registration Date: Tue, 12 Nov 2019 20:58:43 -0500 Message-Id: <20191113015932.12655-19-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191113015932.12655-1-sashal@kernel.org> References: <20191113015932.12655-1-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 39049e4884fbd..37de83c5ef172 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -150,7 +150,7 @@ 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