Messages in this thread Patch in this message |  | | Date | Thu, 11 Oct 2001 11:37:16 +0400 | From | Roman Kagan <> | Subject | Re: 2.4.11 APIC problems |
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I had exactly the same problem on my HP e800. I've tried to identify what had changed between 2.4.10 and 2.4.11 in IO-APIC code, and I've found out that probably the only change relevant to my uniprocessor case is the change of the initial value of dest_mode field in struct IO_APIC_route_entry in setup_IO_APIC_irqs() and setup_ExtINT_IRQ0_pin() in arch/i386/kernel/io_apic.c from 1 to macro INT_DELIVERY_MODE, which for uniprocessors was defined to be 0.
I don't claim I understand whether it is right or wrong, but the following patch can fix _my_ problem:
--- linux/include/asm-i386/smp.h.int_delivery Wed Oct 10 13:36:11 2001 +++ linux/include/asm-i386/smp.h Wed Oct 10 18:17:06 2001 @@ -31,7 +31,7 @@ # define INT_DELIVERY_MODE 1 /* logical delivery broadcast to all procs */ # endif #else -# define INT_DELIVERY_MODE 0 /* physical delivery on LOCAL quad */ +# define INT_DELIVERY_MODE 1 /* logical delivery */ # define TARGET_CPUS 0x01 #endif Cheers, Roman. - 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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