Date: Wed, 11 Feb 2004 16:16:49 -0500 From: John Baldwin <jhb@FreeBSD.org> To: "Petr Holub" <hopet@ics.muni.cz>, "Dag-Erling Smrrgrav" <des@des.no> Cc: current@FreeBSD.org Subject: Re: storm of stray interrupts Message-ID: <200402111616.49108.jhb@FreeBSD.org> In-Reply-To: <02fe01c3f0e2$95087360$2136fb93@kloboucek> References: <02fe01c3f0e2$95087360$2136fb93@kloboucek>
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On Wednesday 11 February 2004 04:04 pm, Petr Holub wrote: > > Wrong, his BIOS just sucks and doesn't provide info on how to route > > drm0's interrupt when using ACPI. drm0 is routed to IRQ 16, but we end > > up using the ATPIC interrupt 11 to try and route it instead due to his > > broken BIOS. Since PCI interrupts are level triggered, this means that > > as soon as drm0 interrupts, it storms on IRQ 16 since drm0's ISR never > > gets called. > > OK---thanks. I've disabled ACPI (since disabling APIC results in loss of > SMP) and it works fine (except for no virtual hyperthreaded processors). > BTW: would it be possible to make drm use IRQ 16 by hinting (e.g. in > device.hints)? Not currently, no. If you have HTT enabled in your BIOS, you can use the MPTABLE_FORCE_HTT kernel option to get your virtual processors back. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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