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 28F46C43331 for ; Wed, 13 Nov 2019 02:04:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EB087206B6 for ; Wed, 13 Nov 2019 02:04:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610694; bh=HbgVx4qjb6kTQShWNZlxWmMuVhrxfteiZTihwmQgvoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=K4JzFfT/ilCkY6WRO3qUQFemjga+YzCQEIF/oR+OIhtrKSwa8TX8jJVgX4g4M9TTx EXUMztkRrbwmD04RUEb8r2wb2ZB8RIhLdm2rn6CtbzovjT0j+CBskiEZjdiBl/tk50 P1I9vuRyYmDl+m8DUU6M417IrhNGsb96WvbFfbvE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730451AbfKMCEw (ORCPT ); Tue, 12 Nov 2019 21:04:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:58128 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730898AbfKMCBy (ORCPT ); Tue, 12 Nov 2019 21:01:54 -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 EBAD8206B6; Wed, 13 Nov 2019 02:01:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610513; bh=HbgVx4qjb6kTQShWNZlxWmMuVhrxfteiZTihwmQgvoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MQob1MLGFs+sm/rAN5DH+KEon33YHT7TNl3wcVOmjGukIADEL29gE3lG3xpVsaBYO uvGyAl61gRW3O0M5NJ7YNwGcsRGIwXdN42M/+vEFwSDTFPTfWO5cAQJXljg6DpBYfc dtESrDZ5aTXLBu2O2E7eNd5aB0o4ZrnuOMFEHQX8= 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 4.4 14/48] powerpc/pseries: Fix DTL buffer registration Date: Tue, 12 Nov 2019 21:00:57 -0500 Message-Id: <20191113020131.13356-14-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191113020131.13356-1-sashal@kernel.org> References: <20191113020131.13356-1-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