Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753680AbZFFBZM (ORCPT ); Fri, 5 Jun 2009 21:25:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752921AbZFFBZA (ORCPT ); Fri, 5 Jun 2009 21:25:00 -0400 Received: from yw-out-2324.google.com ([74.125.46.30]:13504 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752882AbZFFBY7 (ORCPT ); Fri, 5 Jun 2009 21:24:59 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=GE0Hws72rDlKC08MjdoeGKAaAZuNc5ctuAdcVNclPppfZyqlk+ks78ydXbaO8hqSuT PfsEWUidlhyfwR91JD9FMM1CkPdPv2qEj/RUfl/noW0eDhe/zjcgRLHNtswV/uj7Da4t vjV85Gk1BXhqO/55nD/iPayCf8VPSynrg265s= Message-ID: <4A29C56A.8020306@gmail.com> Date: Fri, 05 Jun 2009 19:24:58 -0600 From: Robert Hancock User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: david@lang.hm CC: Andrew Morton , linux-kernel , linux-acpi@vger.kernel.org, Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" Subject: Re: only a single core (out of 8) initialized References: <20090604202933.d7c24c3d.akpm@linux-foundation.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1900 Lines: 56 david@lang.hm wrote: > On Thu, 4 Jun 2009, Andrew Morton wrote: > >> Subject: Re: only a single core (out of 8) initialized >> >> On Thu, 4 Jun 2009 19:52:36 -0700 (PDT) david@lang.hm wrote: >> >>> this is 2.6.30-rc7 >> >> Were any earlier kernels OK? >> >>> with a patch added to debug a nv sata driver >>> incompatibility with the Intel SSDs on a tyan motherboard >>> >>> on one system it sees all 8 cores, on the other system it only >>> initializes >>> one core. >>> >>> can anyone help me spot what's going wrong in the one that's only >>> seeing a >>> single core? If I'm reading things correctly it's seeing both sockets >>> for >>> the NUMA setup, but then only initializing one core on the first socket. >> >> good: >> SMP: Allowing 8 CPUs, 4 hotplug CPUs >> >> bad: >> SMP: Allowing 1 CPUs, 0 hotplug CPUs >> >> perhaps due to >> ACPI: No APIC-table, disabling MPS >> >> You could have a poke around in arch/x86/kernel/smpboot.c() and find >> out what happened here. I'd be suspecting this code triggered: >> >> /* no processor from mptable or madt */ >> if (!num_processors) >> num_processors = 1; >> >> because ACPI doesn't like that board. >> >> Did you look into updating the BIOS? > > this is actually the newer of the two systems. I've already escalated up > to Tyan about the fact that this board won't see the Intel SSD drives > (unless you hotplug the drive). I've forwarded this to them as well. > their website does show a newer bios than what was shipped to me. Yeah, it seems like a BIOS problem on that system. It's missing a bunch of the ACPI tables that the other system has. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/