From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [80.237.130.52]) (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 BCCF31C36; Thu, 23 May 2024 05:20:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.237.130.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716441628; cv=none; b=PlDf3U2uUaRsGnSoqj0CHQWa5TVn1ui+DaS+atPPOgcNf3FUTcq6yetYAwFSCZAWaly+39QhDa0yCImgarPhq76VSYikPvzedokAdPFjQqF50jO7IaAAl4Yq5G3RcFDfXyc8ZGw7WynlbNriDKXe2xbVcaAhwq1L/z9fq0sYhwc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716441628; c=relaxed/simple; bh=PeC5iXfkIeU7spJ0VmixJQ2YQzDdAfaxUA9JmeGKvcI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=i/s5ZxpAY/skwL09SXkdewetpksSBPgEsA7XiHGJYUtVPEW+C80uBKFZdRBeCcSUSy1Ygo7fBl//1pDmLXGgm2oGdFFtJkcY9ylSOIRYy//fYuMClb/aM2UlWi+FBd85U9kQ1iWLsj+aMn7HU3Mqpu030SS9tOkwGZoQNeKctog= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=leemhuis.info; spf=pass smtp.mailfrom=leemhuis.info; dkim=pass (2048-bit key) header.d=leemhuis.info header.i=@leemhuis.info header.b=NCJ70/PC; arc=none smtp.client-ip=80.237.130.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=leemhuis.info Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=leemhuis.info Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=leemhuis.info header.i=@leemhuis.info header.b="NCJ70/PC" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=leemhuis.info; s=he214686; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:From:Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version: Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description: In-Reply-To:References; bh=fUzokhKC9+TC+7P2/H37759pRNlpzZPwjqYlpOyCjhY=; t=1716441626; x=1716873626; b=NCJ70/PCqhMvsPcvPOYo9Yl58CK1VG8pMBrXynDTGFn3S43 3mql3nVSc4Zmi2s+hScCzATf12RtHHaCfV3bIpb1sEcBrLmhvUKSIEax1hwYXE+TwgwhSGkYo9CO6 SzeFS33LQ9G/QdRYrLZ9Li6qcs12HRIOKyeDuchDlQ7EN1KVB8X2mEJaSUi/rXMJWEUAo+go7bEYi ESMBY54Vv4p/inGgxW3Ms/1VsydzoDOptbEqjuJ5aaOIelw0+1jHd6GDh4WRGxuaRKfBDzZ1Rl05z 4tS9J5gl3O4BiCP+XFNPQRzAjKOIZSSTDT2Ai/x08TfYrNuNyG7PBqWAsbRtjhsQ==; Received: from [2a02:8108:8980:2478:8cde:aa2c:f324:937e]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1sA0sJ-0000YB-5m; Thu, 23 May 2024 07:20:23 +0200 Message-ID: Date: Thu, 23 May 2024 07:20:22 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Early boot regression from f0551af0213 ("x86/topology: Ignore non-present APIC IDs in a present package") To: Thomas Gleixner , Lyude Paul Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Mario Limonciello , Borislav Petkov , Linux kernel regressions list References: <3d77cb89857ee43a9c31249f4eab7196013bc4b4.camel@redhat.com> <87plumxz4x.ffs@tglx> <87le59vw1y.ffs@tglx> <3a0afe545747e5314a9cb6bbaa9ce90b259ddfac.camel@redhat.com> <87edautcmz.ffs@tglx> <3b1d16e357c1f9badeef405366492f05af26c085.camel@redhat.com> <878r11t8zu.ffs@tglx> <016902d9-3858-4c65-b3ec-f7a5103af63c@amd.com> <51d0dff8-2888-463c-95ab-71b491f12a8f@leemhuis.info> <877cg4ppd5.ffs@tglx> <87jzjxn6s5.ffs@tglx> <97bd95480a8b9951edc9ee2d2648d1b9c574e3b0.camel@redhat.com> <87bk58n6le.ffs@tglx> <2fd6009d21d606d13f0c472dbaa754a21f3105d9.camel@redhat.com> <87wmntkhak.ffs@tglx> <874japh4ww.ffs@tglx> From: "Linux regression tracking (Thorsten Leemhuis)" Content-Language: en-US, de-DE Reply-To: Linux regressions mailing list In-Reply-To: <874japh4ww.ffs@tglx> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1716441626;970a6ef0; X-HE-SMSGID: 1sA0sJ-0000YB-5m On 23.05.24 00:12, Thomas Gleixner wrote: > On Wed, May 22 2024 at 15:35, Lyude Paul wrote: > >> Awesome! This patch does seem to make the system boot, thank you for >> your help +1 > The only thing what's awesome here is that it confirms my analysis of > the underlying problem. I offered Borislav a bet on that, but he > politely declined :( > > The not so awesome part is the question what to do with that insight. > > The first issue is that we don't know whether that's only a problem on > your particular system or if there is an underlying systematic problem > on that particular CPU variant (model/stepping). FWIW, Arch Linux and openSUSE Tumbleweed switched to 6.9.1 in the past few days (Fedora will likely follow in ~two weeks) and I have not yet seen any reports about problems like this, which is a first small indicator that this might be a system specific problem; if any such reports come up I'll mention it here. Ciao, Thorsten