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SubjectRe: QUESTION: Network hangs with BP6 and 2.4.x kernels, hardwarerelated?
Frank de Lange wrote:
> On Fri, Jan 12, 2001 at 09:54:31PM +0100, Manfred Spraul wrote:
> > I have found one combination that doesn't hang with the unpatched
> > 8390.c, but network throughput is down to 1/2. I hope that's due to the
> > debugging changes.
> Hm, could it be that the fact that network throughput is halved causes the
> problem not to appear?

No. The problem is still there. But now lots of losts packets instead of
a total hang.

Due to the modification of mask_irq now disable_irq_nosync and
enable_irq act as if I would press SysRQ+q every millisecond, and thus
the io apic is immediatly reset when it got stuck.

Btw, my initial assumption about EOI to masked interrupt must be wrong:
2.2 always first masks the irq, then it sends the EOI, and 2.2 doesn't

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