From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jan 2001 13:09:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jan 2001 13:09:00 -0500 Received: from colorfullife.com ([216.156.138.34]:30469 "EHLO colorfullife.com") by vger.kernel.org with ESMTP id ; Fri, 12 Jan 2001 13:08:52 -0500 Message-ID: <3A5F4827.2E443786@colorfullife.com> Date: Fri, 12 Jan 2001 19:08:39 +0100 From: Manfred Spraul X-Mailer: Mozilla 4.75 [en] (X11; U; Linux 2.2.16-22 i586) X-Accept-Language: en MIME-Version: 1.0 To: Alan Cox CC: dwmw2@infradead.org, linux-kernel@vger.kernel.org, frank@unternet.org Subject: Re: QUESTION: Network hangs with BP6 and 2.4.x kernels, hardware In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > > > Frank, could you try what happens with the NMI oopser disabled? > > > > The second major difference I'm immediately aware of is the number of > > the reschedule/tlb flush/etc interrupt: 2.2 uses the lowest priority, > > 2.4 the highest priority. > > Im trying to remember what they were, but some APIC versions do have errata > and someting about 3 irqs at the same priority level rings a bell. The PPro local apic documentation says: <<<<<<< The processor's local APIC includes an in-service entry and a holding entry for each priority level. To avoid losing interrupts, software should allocate no more than 2 interrupt vectors per priority. >>>>>>>> Ok, we must reorder the vector numbers for our own interrupts (0xfb-0xff), but that doesn't explain our problems: we don't loose reschedule interrupts, we have problems with normal interrupts - and there we only use 2 irq at the same priority level. Btw, the kick patch I sent a few minutes ago revives my io apic. -- Manfred - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/