Messages in this thread Patch in this message | | | Date | Fri, 29 Jan 1999 20:11:06 -0500 (EST) | From | Alex Buell <> | Subject | FAO: Ingo Molnar (Spurious APIC interrupts) |
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Your e-mail seems to be down at the moment :o( so I'm copying this to the l-k list in the hope you'll get this.
On Fri, 29 Jan 1999, MOLNAR Ingo wrote:
> > > cool! Could you run this for a day or so and tell me wether there are gone > > > forever, or just getting more rare? > > > > I'm doing that now with 2.2.1 (They still happen with 2.2.1!), and will > > let you know if they still are happening when I get back from work > > tonight.
Ok, just got in from work. Checked logs and there's no sign of spurious APIC interrupts. I guess we can write this off as fixed =). To make life easier, here's a patch for 2.2.1.
Apply within the linux/arch/i386/kernel directory.
--- smp.c.orig Fri Jan 29 08:27:15 1999 +++ smp.c Fri Jan 29 18:40:21 1999 @@ -726,9 +726,8 @@ * also, put the APIC into flat delivery mode. */ value = apic_read(APIC_LDR); - value &= ~APIC_LDR_MASK; - value |= SET_APIC_LOGICAL_ID(0xff); - apic_write(APIC_LDR,value); + value = (1<<hard_smp_processor_id()); + apic_write(APIC_LDR,value); value = apic_read(APIC_DFR); value |= SET_APIC_DFR(0xf); Cheers, Alex -- /\_/\ Legalise cannabis now! ( o.o ) Grow some cannabis today! > ^ < Peace, Love, Unity and Respect to all.
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Linux tahallah 2.2.1 #14 SMP Thu Jan 28 20:34:56 EST 1999 Two Intel Pentium Pro 166MHz processors, 331.78 total bogomips, 48M RAM System library 2.0.111
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