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 0441BC432C0 for ; Fri, 22 Nov 2019 11:24:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C444A20679 for ; Fri, 22 Nov 2019 11:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574421878; bh=3q8u0klQBwS/SXsgHA9M3plNrZgWLC6kftn5zeoaxME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Tx1OlLAbhoT7poOHK14wR8OxGMU0GW6G6yCi5yle2F6ma5aIRLRhgeIkj21zvxHEg 1jYShdriAolMyuAfY7PAeK+OSsYjX/U+Nc4M6O76MlH2uWZ+5ZecOnGxO8B6QmPM3J NmE3Gak3WKwETvFQhxblfY58Wq3MsRFXqhDYdAzs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728189AbfKVKii (ORCPT ); Fri, 22 Nov 2019 05:38:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:41064 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728162AbfKVKif (ORCPT ); Fri, 22 Nov 2019 05:38:35 -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 7EEF42071C; Fri, 22 Nov 2019 10:38:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574419115; bh=3q8u0klQBwS/SXsgHA9M3plNrZgWLC6kftn5zeoaxME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VTYTRQ4ZrMeNYsl+Ij87mcS4HOO0jNZOVIOTJpkTsIt7gz6+xV6dWKsMLrIrwg4b5 NqBOeaO/IAlZVNSwRPH38lJVpSHnBsLvWKjXGwB6ySZ+ZGeEXc74c4aDCjOqf1EGhE hsnj/O7KACslUf6pJTE6whU8rqzrpxsGZh5AiTdM= 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 4.4 125/159] powerpc/pseries: Fix how we iterate over the DTL entries Date: Fri, 22 Nov 2019 11:28:36 +0100 Message-Id: <20191122100831.804266833@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191122100704.194776704@linuxfoundation.org> References: <20191122100704.194776704@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 37de83c5ef172..7a4d172c93765 100644 --- a/arch/powerpc/platforms/pseries/dtl.c +++ b/arch/powerpc/platforms/pseries/dtl.c @@ -185,7 +185,7 @@ 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