Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265274AbUAPFpi (ORCPT ); Fri, 16 Jan 2004 00:45:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265275AbUAPFpi (ORCPT ); Fri, 16 Jan 2004 00:45:38 -0500 Received: from holomorphy.com ([199.26.172.102]:41126 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S265274AbUAPFpg (ORCPT ); Fri, 16 Jan 2004 00:45:36 -0500 Date: Thu, 15 Jan 2004 21:45:21 -0800 From: William Lee Irwin III To: Zwane Mwaikambo Cc: James Cleverdon , "Nakajima, Jun" , Andrew Morton , Linux Kernel , Linus Torvalds , Chris McDermott , "Martin J. Bligh" Subject: Re: [PATCH] 2.6.1-mm2: Get irq_vector size right for generic subarch UP installer kernels Message-ID: <20040116054521.GH1332@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Zwane Mwaikambo , James Cleverdon , "Nakajima, Jun" , Andrew Morton , Linux Kernel , Linus Torvalds , Chris McDermott , "Martin J. Bligh" References: <7F740D512C7C1046AB53446D3720017361883D@scsmsx402.sc.intel.com> <200401151357.16807.jamesclv@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1298 Lines: 28 On Thu, 15 Jan 2004, James Cleverdon wrote: >> No, I haven't exceeded the available vectors, but wli has on a large >> NUMA-Q box. On Thu, Jan 15, 2004 at 05:40:54PM -0500, Zwane Mwaikambo wrote: > Yes i believe the 8 node NUMA-Qs do this easily. The mainline kernel panics before console_init() on the 9th IO-APIC (the first IO-APIC on the 5th node) and this has been an extreme annoyance essentially since Linux was ported to the beasts. It won't be long before currently shipping ia32 boxen catch up with that blast from the 4+ -year-old past, and x86-64 or whatever will have similar issues if/when it ever gets chipsets allowing similar numbers of cpus and devices (presumably they're correlated) to be attached, since AFAIK it didn't change the number of IDT entries. One thing that's particularly asinine is that since the things use physical destinations in the RTE's and use a serial APIC bus or whatever per node (i.e. can only interrupt cpus in their node), they really are just a tabulation method away from functioning properly. -- wli - 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/