Messages in this thread | | | From | James Cleverdon <> | Subject | Re: [PATCH] Dynamic irq_vector allocation for 2.6.0-test6-mm | Date | Sun, 5 Oct 2003 17:14:31 -0700 |
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On Friday 03 October 2003 9:18 pm, Zwane Mwaikambo wrote: > On Fri, 3 Oct 2003, James Cleverdon wrote: > > irq_vector is indexed by a value that can be as large as the sum of all > > the RTEs in all the I/O APICs. On a 32-way x445 or a 16-way x440 with > > PCI expansion boxes, the static array will overflow. > > What is number of interrupt sources on that 32x?
That depends on the number of PCI cards plugged into the slots and how many of the four interrupt lines (/INTA - /INTD) are used.
However it doesn't matter. Even if no cards are present, the array will still overflow because the I/O APIC init routines assign a vector to each RTE and run off the end of irq_vector.
-- James Cleverdon IBM xSeries Linux Solutions {jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot comm - 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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