Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 13 Apr 2006 15:50:39 +0200 | From | "Jan Beulich" <> | Subject | [i386, x86-64] ioapic_register_intr() and assign_irq_vector() questions |
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Since ioapic_register_intr() ties, for the PCI case, the interrupt gate for vector to interrupt[vector], doesn't this, since do_IRQ() derives the IRQ from the value loaded in the handler at that address (which is the value of vector), mean that here irq == vector in all cases? If so, why does this function need an if/else (the 'else' case would then be good for both cases)?
Looking at the call paths assign_irq_vector() can get called from, I would think this function, namely as it's using static variables, lacks synchronization - is there any (hidden) reason this is not needed here?
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