From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E8965255F48; Mon, 12 May 2025 07:56:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747036575; cv=none; b=gvGACuc5Esh5zaPCQqTnRfGVzexTbMexvdpGCwepuRnjoVJV/DnIGl62uCSYmQCM+LJaJcHlwphPHoSnQlp2uCGd96NTwsfjbvtI2W9mfo/q7J6sGt1ImbQvV0E2CyM+UmpCuRLHy0Lxc3ssHw8qST9jIqyJ9S3BwDcc2Ehi0VQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747036575; c=relaxed/simple; bh=9Glz5LZDc7HH2FSiAtq3LuSpQaYGP+6gOkpN5kwj+zc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=OqcQYjlWNJAExQob5xrQw5bbtEorfd7UwWElacjdOorxiGurWXPzChKBLbYYdUb/ikIyw/vljSmB4isCyRyKaSyU+Svqif2Yw3awzOID26PLsWL1dJL5LEUZL6GRQ/XoFSiBd40Qxsv5/vbSDWTS2k8qzQ458Va4yITvpatLjCg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=a6lXuY/k; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="a6lXuY/k" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 223DF40E023F; Mon, 12 May 2025 07:46:34 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Authentication-Results: mail.alien8.de (amavisd-new); dkim=pass (4096-bit key) header.d=alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id VHyi69vfs-C5; Mon, 12 May 2025 07:46:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1747035990; bh=oKhGyt1QxbrnNI4Wnk9jzdBGpu2nyB7Th8n6nIIp19U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=a6lXuY/kD0AoY9lSeAjkmxqiwqvuvQuXahuLFky6BB4qkONTFiCwZDTSouQYvP7wu cC3L2KLty7ZDAHuOruYDpzFE+A5Uk14j2h4etV4zCxTfAuVpudRX1oec/f9yDxPoN9 jGvD8wp/+QyXoUwM4kHQEMJLNj7qojvOM0wqhnLAgdO5DS7u+Qwtb/3TNzyp5Nlw4r bWM57GhGP38IhzyvYO6j/0SQrRrBoE38pa3+YSCzSBJDSSbdL4Jnm35BAK7FLjJ16D 0Horft1GRUIsOIylQatBo1jhDMJjzUh8V43RfVsBAA8GPkrv+3Ir8okJGijs2EnzsL +2Dv6aex3FBnDsemBmuv+2zPRH/ESBOyI0dsd7UIulLJh8eOfdynALMCYAdz133e8J bVCkBCyXgfznn1s4zj2o3ayA+TZSKZ+gkpP3lMFyZK/gcFpaA9emtDT56bTXHlgtHJ 58RtEyGa3ZmysbX6wTT37LSbTH1XjeK7OpmC8rdTFOZmMQh8z5EgbKRstZDfH6+6QU /jxnsEGO9o3tk2cYwPzWg8blfPBIQz/wFkdwtAkB1MjhCHWM6YR204m+AlFoL50wJs xPuOBi0GnkP9Q1sopdO9eG8mCj9C5Ivh08lUkM3jXrOgbDcU5vw0JWZ6GigAJWWUfB 5K+5V0IeCh49Jp04jX62tmEA= Received: from zn.tnic (p579690ee.dip0.t-ipconnect.de [87.150.144.238]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 7F61F40E023B; Mon, 12 May 2025 07:46:23 +0000 (UTC) Date: Mon, 12 May 2025 09:46:16 +0200 From: Borislav Petkov To: Yazen Ghannam Cc: x86@kernel.org, Tony Luck , linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, Smita.KoralahalliChannabasappa@amd.com, Qiuxu Zhuo Subject: Re: [PATCH v3 17/17] x86/mce: Restore poll settings after storm subsides Message-ID: <20250512074616.GSaCGnSJbBpToh2VM6@fat_crate.local> References: <20250415-wip-mca-updates-v3-0-8ffd9eb4aa56@amd.com> <20250415-wip-mca-updates-v3-17-8ffd9eb4aa56@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20250415-wip-mca-updates-v3-17-8ffd9eb4aa56@amd.com> On Tue, Apr 15, 2025 at 02:55:12PM +0000, Yazen Ghannam wrote: > Users can disable MCA polling by setting the "ignore_ce" parameter or by > setting "check_interval=0". This tells the kernel to *not* start the MCE > timer on a CPU. > > During a CMCI storm, the MCE timer will be started with a fixed > interval. Why? If a user doesn't want CEs, why are we even bothering with CMCI storms? Might as well disable the storm handling code altogether... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette