Messages in this thread | ![/](/images/icornerl.gif) | | Subject | RE: [PATCH] 2.5.68 Fix IO_APIC IRQ assignment bug | Date | Mon, 21 Apr 2003 11:24:26 -0700 | From | "Nakajima, Jun" <> |
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> I know there are more people who want to get rid of NR_IRQS e.g. due to > very sparse irq distribution. For one of the platforms i'm interested in, > we have to make a clear distinction between irqs and vectors so that we > can have seperate vector allocations per interrupt handling domain. I > believe IA-64 does the same but instead per cpu (our domain/node consists > of 4 cpus) NR_IRQS gets in the way due to it being set at 224 when we > actually
I heard such requests too, and suggested the same thing, i.e. seperate vector allocations per interrupt handling domain.
> can service NR_IRQ_VECTORS * NUM_MAXNODES I/O vectors. Can you post your > patch?
Yes, we'll post it after cleanups.
> > Also what MSI devices are you using? >
Adaptec 39320 SCSI HBA (it has the 7902 ASIC), which has two MSI-capable functions. You don't need to change the driver (aic79xx) to enable MSI.
Thanks, Jun
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