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Date: Fri, 27 Apr 2007 15:31:40 +0200 (CEST)
From: "M. Koehrer" <mathias_koehrer@domain.hid>
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Subject: Re: [Xenomai-help] Xenomai and MSI enabled crashes kernel
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To: jan.kiszka@domain.hid, rpm@xenomai.org
Cc: xenomai@xenomai.org

Hi all,

sure, I can provide support in testing (as this is reproducable at my PC).

Mathias

> Philippe Gerum wrote:
> > On Fri, 2007-04-27 at 13:48 +0200, Jan Kiszka wrote:
> >=20
> >>> I have attached my kernel config to this mail.
> >>> Any idea on this? Is there anybody out there that has MSI running
> succesfully with the Xenomai adeos patch?
> >> Hmm, from a glance at the 2.6.20 ipipe patch I would say that MSI is
> >> currently unsupported. No related patch hunk makes it look suspicious =
to
> >> me -- or is this supposed to work automagically, Philippe?
> >=20
> > Since genirq, MSI interrupts have their irq_chip descriptor managed by
> > the IO-APIC support. What remains to be tested is the masking/unmasking
> > code, which is still implemented by the msi driver; unfortunately I hav=
e
> > no PCI-Express hw at hand anymore, so I can't test CONFIG_PCI_MSI
> > properly.
> >=20
> > At first sight, the issue Mathias raised looks like an out-of-bound
> > array reference indexed on an unexpectedly large IRQ value; this would
> > be quite a dumb bug, but the only way to check that is with proper hw.
> >=20
>=20
> ... or instrumentation patches for Mathias' target, in case he has the
> time to do some short-cycle tests.
>=20
> Jan
>=20
>=20

--=20
Mathias Koehrer
mathias_koehrer@domain.hid


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