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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 0FC7EC43603 for ; Mon, 9 Dec 2019 05:46:54 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BAAE7206D3 for ; Mon, 9 Dec 2019 05:46:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BAAE7206D3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 47WXJC563KzDqLv for ; Mon, 9 Dec 2019 16:46:51 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 47WXGD5SYnzDqHJ for ; Mon, 9 Dec 2019 16:45:08 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 47WXGD2ddxz9sPh; Mon, 9 Dec 2019 16:45:08 +1100 (AEDT) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: 249fad734a25889a4f23ed014d43634af6798063 In-Reply-To: <20191118034452.9939-1-maddy@linux.vnet.ibm.com> To: Madhavan Srinivasan From: Michael Ellerman Subject: Re: [PATCH v2] powerpc/perf: Disable trace_imc pmu Message-Id: <47WXGD2ddxz9sPh@ozlabs.org> Date: Mon, 9 Dec 2019 16:45:08 +1100 (AEDT) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Madhavan Srinivasan , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, 2019-11-18 at 03:44:52 UTC, Madhavan Srinivasan wrote: > When a root user or a user with CAP_SYS_ADMIN > privilege use trace_imc performance monitoring > unit events, to monitor application or KVM threads, > may result in a checkstop (System crash). Reason > being frequent switch of the "trace/accumulation" > mode of In-Memory Collection hardware. > This patch disables trace_imc pmu unit, but will > be re-enabled at a later stage with a fix patchset. > > Fixes: 012ae244845f1 ('powerpc/perf: Trace imc PMU functions') > Signed-off-by: Madhavan Srinivasan Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/249fad734a25889a4f23ed014d43634af6798063 cheers