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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 167F7C77B75 for ; Tue, 18 Apr 2023 08:41:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230020AbjDRIlG (ORCPT ); Tue, 18 Apr 2023 04:41:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230359AbjDRIlE (ORCPT ); Tue, 18 Apr 2023 04:41:04 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2EF0B1FCA; Tue, 18 Apr 2023 01:41:01 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1681807259; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZcloEN6PHwdxX+wR7PTxsLZ5R7H2GaplG8eadvwcPdo=; b=YSKoMebO1SMgoiijw3sT6dUmL/DeC/wEBV7I8b1z9zceTKQGSQcXYB/YeSo0ccQDTS56AJ nhdRaDZ0NwXgH8hEOLQ/dTVz+deZ2fOLHnFZiiQisU0IHpMqNc6BSUUtDUgjhVk1lqhuiZ hUb1G4MomabLXGs1y5CDoqcnpdFFKWDNC8+YA3UX2Tbl5n22OpF5WIiJBUlmrHKqBerKx2 wlWzIAPgOX14nhVpRxuNgRbo/aKsOKfHG6jdAiFfsWbGz9WdOu4gVRxQNpL5YEqBPaHGvU oTthGjE00T8jwQcWEiZWH5/TiAxdRfJ1M3JoIe2bb3crK0Gl32O2LSnNFxiq6g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1681807259; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZcloEN6PHwdxX+wR7PTxsLZ5R7H2GaplG8eadvwcPdo=; b=rNfKPYcxDWHHNemvWuh/rsGPuG8dn/TolEBJI+1ZiBhvXwc9cXh+Pw7pgY4xNT8GFDtc33 j+rvG82H6UitkyAQ== To: Paul Menzel Cc: linux-kernel@vger.kernel.org, x86@kernel.org, David Woodhouse , Andrew Cooper , Brian Gerst , Arjan van de Veen , Paolo Bonzini , Paul McKenney , Tom Lendacky , Sean Christopherson , Oleksandr Natalenko , "Guilherme G. Piccoli" , Piotr Gorski , David Woodhouse , Usama Arif , =?utf-8?B?SsO8cmdlbiBHcm/Dnw==?= , Boris Ostrovsky , xen-devel@lists.xenproject.org, Russell King , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon , Guo Ren , linux-csky@vger.kernel.org, Thomas Bogendoerfer , linux-mips@vger.kernel.org, "James E. J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , linux-riscv@lists.infradead.org, Mark Rutland , Sabin Rapan Subject: Re: [patch 00/37] cpu/hotplug, x86: Reworked parallel CPU bringup In-Reply-To: <87ttxd4qxz.ffs@tglx> References: <20230414225551.858160935@linutronix.de> <8247ce4d-15b7-03b2-0c9b-74f8cd6cad50@molgen.mpg.de> <87wn2a4la5.ffs@tglx> <87ttxd4qxz.ffs@tglx> Date: Tue, 18 Apr 2023 10:40:57 +0200 Message-ID: <87r0sh4m7a.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On Tue, Apr 18 2023 at 08:58, Thomas Gleixner wrote: > On Mon, Apr 17 2023 at 19:40, Paul Menzel wrote: >> Am 17.04.23 um 16:48 schrieb Thomas Gleixner: >> >>> On Mon, Apr 17 2023 at 13:19, Paul Menzel wrote: >>>> Am 15.04.23 um 01:44 schrieb Thomas Gleixner: >>>> [ 0.258193] smpboot: CPU0: AMD A6-6400K APU with Radeon(tm) HD >>>> Graphics (family: 0x15, model: 0x13, stepping: 0x1) >>>> [=E2=80=A6] >>>> [ 0.259329] smp: Bringing up secondary CPUs ... >>>> [ 0.259527] x86: Booting SMP configuration: >>>> [ 0.259528] .... node #0, CPUs: #1 >>>> [ 0.261007] After schedule_preempt_disabled >>>> [ 10.260990] CPU1 failed to report alive state >>>=20 >>> Weird. CPU1 fails to come up and report that it has reached the >>> synchronization point. >>>=20 >>> Does it work when you add cpuhp.parallel=3Doff on the kernel command li= ne? >> >> Yes, the ten seconds delay is gone with `cpuhp.parallel=3Doff`. >> >> There was a patch set in the past, that worked on that device. I think=20 >> up to v4 it did *not* work at all and hung [1]. I need some days to=20 >> collect the results again. > > Can you please apply the patch below on top of the pile remove the > command line option again? Bah. That patch does not make any sense at all. Not enough coffee. Can you please provide the output of cpuid? Thanks, tglx