Date: Wed, 11 Feb 2004 13:16:50 -0500 From: John Baldwin <jhb@FreeBSD.org> To: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=), "Petr Holub" <hopet@ics.muni.cz> Cc: current@freebsd.org Subject: Re: storm of stray interrupts Message-ID: <200402111316.50941.jhb@FreeBSD.org> In-Reply-To: <xzpad3pbtd6.fsf@dwp.des.no> References: <02ad01c3f0a8$0a6578a0$2136fb93@kloboucek> <xzpad3pbtd6.fsf@dwp.des.no>
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On Wednesday 11 February 2004 09:09 am, Dag-Erling Sm=F8rgrav wrote: > "Petr Holub" <hopet@ics.muni.cz> writes: > > -su-2.05b# vmstat -i > > interrupt total rate > > [...] > > irq16: fwohci0 416899230 2703 > > There's definitely something wrong with your firewire controller. Wrong, his BIOS just sucks and doesn't provide info on how to route drm0's= =20 interrupt when using ACPI. drm0 is routed to IRQ 16, but we end up using t= he=20 ATPIC interrupt 11 to try and route it instead due to his broken BIOS. Sin= ce=20 PCI interrupts are level triggered, this means that as soon as drm0=20 interrupts, it storms on IRQ 16 since drm0's ISR never gets called. =2D-=20 John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" =3D http://www.FreeBSD.org
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