Re: 2.6.24-rt1 IRQ routing anomaly


On Thu, 21 Feb 2008, Mark Hounschell wrote:

To prove this is the problem, boot with noapic in the kernel command line.
1) the problem should disappear.
2) (I'm betting) you see that the eth and EMU10K1 share the same
interrupt line.


Yep, you were right. They do share the same IRQ and the problem does go away.
Unfortunately I can't run this machine with noapic. I need irq affinity.


Thanks for verifying. OK, I'll see if I can get the workaround on i386. I
thought I saw a patch someplace where someone ported that workaround. I'm
still sorting out bugs in -rt2 (why it is still not out). I'll see if I
can find time to get the workaround to i386 for -rt2 as well.

-- Steve

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