Messages in this thread | | | Date | Mon, 07 Jan 2002 19:20:38 +0100 (CET) | Subject | Re: "APIC error on CPUx" - what does this mean? | From | Rene Rebe <> |
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From: Steven Walter <srwalter@yahoo.com> Subject: Re: "APIC error on CPUx" - what does this mean? Date: Mon, 7 Jan 2002 11:32:27 -0600
> On Mon, Jan 07, 2002 at 02:16:28PM +0100, Petr Vandrovec wrote: > > Nope. Probably when CPU is in local APIC mode, it acknowledges interrupts > > to chipset with different timming, and from time to time CPU still > > sees IRQ pending, so it asks for vector, but as chipset has no > > interrupt pending, it answers with IRQ7. I did no analysis to find > > whether IRQ7 happens directly when we send confirmation to 8259, > > or whether it happens due to some noise on IRQ line. > > > > AFAIK it happens only on VIA based boards, and only if (AMD) CPU is using > > APIC. > > My system is based on AMD's own 750 Irongate chipset, and it produces > both the initial spurious IRQ7 message and plentiful "ERR" interrupts:
All my machines (from SiS 735, over Intel-BX to older Aladin-5 (super7) boxes) producing such "spurious IRQ7" with the actual 2.4.16 or 2.4.17 kernels ...
> srwalter@hapablap:~$ uptime > 11:31am up 42 days, 18:19, 1 user, load average: 1.04, 1.02, 1.00 > srwalter@hapablap:~$ cat /proc/interrupts | grep ERR > ERR: 67169 > -- > -Steven > In a time of universal deceit, telling the truth is a revolutionary act. > -- George Orwell > He's alive. He's alive! Oh, that fellow at RadioShack said I was mad! > Well, who's mad now? > -- Montgomery C. Burns > - > 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/ > - 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/
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