On Fri, Feb 02, 2007 at 09:25:38AM -0800, Auke Kok wrote:
> Adrian Bunk wrote:
> > On Sat, Jan 20, 2007 at 02:34:37PM -0500, Adam Kropelin wrote:
> >> (cc: list trimmed and thread moved to linux-pci)
> >>
> >> I have a PCI-E e1000 card that does not see interrupts on 2.6.20-rc5
> >> unless CONFIG_PCI_MSI is disabled. An e1000 maintainer indicated that
> >> the PHY state is correct, it's just that the interrupt is not getting
> >> thru to the kernel. Interestingly, on 2.6.19 PHY interrupts get thru ok
> >> with MSI enabled (link status responds appropriately) but packet tx
> >> fails with timeout errors, implying that perhaps MAC interrupts are not
> >> arriving.
> >>
> >> I've attached the contents dmesg, 'lspci -vvv', and 'cat
> >> /proc/interrupts' from 2.6.20-rc5.
> >>
> >> This is an nForce 430 based chipset on a Dell E521 which has had
> >> interrupt routing issues before. Prior to 2.6.19 it had to be booted
> >> with 'noapic' in order to come up at all. It also had USB lockup
> >> problems until I applied the latest BIOS update (v1.1.4). So a BIOS
> >> interrupt routing bug with MSI is not out of the question.
> >>
> >> I'm happy to gather more data or run tests...
> >
> > Was this regression fixed by Eric's patch that is included in -rc7?
>
> no, this is a different issue afaics. Eric's patch solves a msi vector leak
> where MSI's were no longer recovered after all 256 of them were handed out. The
> issue here seems to be a very different regression (no vector at all or vector
> not setup correctly to begin with).
>
> I do suggest re-testing the issue with 2.6.20rc7, but it's unlikely it fixes the
> problem for Adam.
Your thought is correct: 2.6.20-rc7 still fails.
--Adam
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