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 1223AC43331 for ; Wed, 13 Nov 2019 02:14:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D186C222C9 for ; Wed, 13 Nov 2019 02:14:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573611268; bh=zyZYw0nM4RFgVaebb4BmvAOIVPjPO6GvSiUzaPlDJ34=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZsBoLDVp268SiksbZknM/IN0RJBB6JE6cxUoURrz5Te04+YBIQrKtAUs2loLMD0sH bM7NQbrgAnWsfaDLWMokK5f8WSQ1SbJ7RU4WVS4En9+twZ38DSWgI8PnEHnAJ6a4Vi xA/vNNF5+d9qC+VYvvRbEBJjr1UJUWtHL1+hsh/w= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728608AbfKMB5P (ORCPT ); Tue, 12 Nov 2019 20:57:15 -0500 Received: from mail.kernel.org ([198.145.29.99]:50160 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728419AbfKMB5L (ORCPT ); Tue, 12 Nov 2019 20:57:11 -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 982C22053B; Wed, 13 Nov 2019 01:57:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573610230; bh=zyZYw0nM4RFgVaebb4BmvAOIVPjPO6GvSiUzaPlDJ34=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k1BV8oqWAP3kftW0z88ncgtAs3knJw1fwosIgBm7uws9vIGbqVku1csQ88YtDBDU2 awhKH6mSuYVC/qJhTiNoHHMhGhwt/sv2JwrUWu2q3o8un1lhyw1sFRgRMhs1+c2pdQ NofbLlwn4G9fLH9LEHKqG3twOB/qfx4xHhMNYKfY= 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 4.14 032/115] powerpc/pseries: Fix how we iterate over the DTL entries Date: Tue, 12 Nov 2019 20:54:59 -0500 Message-Id: <20191113015622.11592-32-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: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: "Naveen N. Rao" [ Upstream commit 9258227e9dd1da8feddb07ad9702845546a581c9 ] When CONFIG_VIRT_CPU_ACCOUNTING_NATIVE is not set, we look up dtl_idx in the lppaca to determine the number of entries in the buffer. Since lppaca is in big endian, we need to do an endian conversion before using this in our calculation to determine the number of entries in the buffer. Without this, we do not iterate over the existing entries in the DTL buffer properly. 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 c762689e0eb33..ef6595153642e 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -184,7 +184,7 @@ static void dtl_stop(struct dtl *dtl) static u64 dtl_current_index(struct dtl *dtl) { - return lppaca_of(dtl->cpu).dtl_idx; + return be64_to_cpu(lppaca_of(dtl->cpu).dtl_idx); } #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ -- 2.20.1