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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 4021AC433E1 for ; Mon, 17 Aug 2020 15:20:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 137A320729 for ; Mon, 17 Aug 2020 15:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597677610; bh=F592JwkZMMRW6U976eGgKBJ9UP2MyAhBL78uU1iPJ+E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YBSXf9jJzcMQQw2IuCIK+mtsCfYgK1F8WwMC9N45x73U6R0Te7z0ZMq29Arm2HL4m if1jbMt+SImBTaFkXlrW3pG66yEwPMc864SWdDhqjuOu1ptZ7WVIwJTn4Uel4p/kVY 83iLJnFh3vjL6IS+EhLgvCIxQdZo/JcnzKZwO1QQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729244AbgHQPUE (ORCPT ); Mon, 17 Aug 2020 11:20:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:40742 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729193AbgHQPTN (ORCPT ); Mon, 17 Aug 2020 11:19:13 -0400 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 64ED720729; Mon, 17 Aug 2020 15:19:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597677553; bh=F592JwkZMMRW6U976eGgKBJ9UP2MyAhBL78uU1iPJ+E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H4Fk4EoYgk/uhGCqvGN1QOxrtni1b/PbF5Jt/41cTj2sbKPq2/tVP7GwoPosMg9Qr dq5VGU3hqbgxGK0MMClAeyI8wco7cCNDbuGz5bJIBlnqNDXsAGYE2LOsDzAp5XY32D ysilwQ4lnmfD/y9JL/bbkt10OXEdw/3abvVV30PE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ammy Yi , Kan Liang , "Peter Zijlstra (Intel)" , Chao Qin , Sasha Levin Subject: [PATCH 5.8 008/464] perf/x86/intel/uncore: Fix oops when counting IMC uncore events on some TGL Date: Mon, 17 Aug 2020 17:09:21 +0200 Message-Id: <20200817143834.149381289@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@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: Kan Liang [ Upstream commit 2af834f1faab3f1e218fcbcab70a399121620d62 ] When counting IMC uncore events on some TGL machines, an oops will be triggered. [ 393.101262] BUG: unable to handle page fault for address: ffffb45200e15858 [ 393.101269] #PF: supervisor read access in kernel mode [ 393.101271] #PF: error_code(0x0000) - not-present page Current perf uncore driver still use the IMC MAP SIZE inherited from SNB, which is 0x6000. However, the offset of IMC uncore counters is larger than 0x6000, e.g. 0xd8a0. Enlarge the IMC MAP SIZE for TGL to 0xe000. Fixes: fdb64822443e ("perf/x86: Add Intel Tiger Lake uncore support") Reported-by: Ammy Yi Signed-off-by: Kan Liang Signed-off-by: Peter Zijlstra (Intel) Tested-by: Ammy Yi Tested-by: Chao Qin Link: https://lkml.kernel.org/r/1590679169-61823-1-git-send-email-kan.liang@linux.intel.com Signed-off-by: Sasha Levin --- arch/x86/events/intel/uncore_snb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c index 3de1065eefc44..1038e9f1e3542 100644 --- a/arch/x86/events/intel/uncore_snb.c +++ b/arch/x86/events/intel/uncore_snb.c @@ -1085,6 +1085,7 @@ static struct pci_dev *tgl_uncore_get_mc_dev(void) } #define TGL_UNCORE_MMIO_IMC_MEM_OFFSET 0x10000 +#define TGL_UNCORE_PCI_IMC_MAP_SIZE 0xe000 static void tgl_uncore_imc_freerunning_init_box(struct intel_uncore_box *box) { @@ -1112,7 +1113,7 @@ static void tgl_uncore_imc_freerunning_init_box(struct intel_uncore_box *box) addr |= ((resource_size_t)mch_bar << 32); #endif - box->io_addr = ioremap(addr, SNB_UNCORE_PCI_IMC_MAP_SIZE); + box->io_addr = ioremap(addr, TGL_UNCORE_PCI_IMC_MAP_SIZE); } static struct intel_uncore_ops tgl_uncore_imc_freerunning_ops = { -- 2.25.1