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* Trivial patch to Documentation/i386/IO-APIC.txt
@ 2008-02-12 1:08 Nick Andrew
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From: Nick Andrew @ 2008-02-12 1:08 UTC (permalink / raw)
To: linux-kernel
The description of the interrupt routing doesn't match the (nice) diagram.
Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Nick.
--- a/Documentation/i386/IO-APIC.txt 2007-10-10 06:31:38.000000000 +1000
+++ b/Documentation/i386/IO-APIC.txt 2008-02-12 11:57:08.000000000 +1100
@@ -68,7 +68,7 @@
These INTA-D PCI IRQs are always 'local to the card', their real meaning
depends on which slot they are in. If you look at the daisy chaining diagram,
-a card in slot4, issuing INTA IRQ, it will end up as a signal on PIRQ2 of
+a card in slot4, issuing INTA IRQ, it will end up as a signal on PIRQ4 of
the PCI chipset. Most cards issue INTA, this creates optimal distribution
between the PIRQ lines. (distributing IRQ sources properly is not a
necessity, PCI IRQs can be shared at will, but it's a good for performance
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2008-02-12 1:08 Trivial patch to Documentation/i386/IO-APIC.txt Nick Andrew
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