Messages in this thread | | | Date | Thu, 9 Oct 2003 14:58:39 -0700 | From | Chris Wright <> | Subject | Re: Horrible ordeals with ACPI, APIC and HIGHMEM (2.6.0-test* and -ac kernels) |
| |
* Martin Aspeli (optilude@gmx.net) wrote: > On Thu, 9 Oct 2003 14:05:23 -0700, Chris Wright <chrisw@osdl.org> wrote: > > > Which 2.6.0-test kernels? Have you tried 2.6.0-test7? A fix for this > > type of problem went into -test7. > > Sadly, yes. My most recent and most comprehensive tests (today) were with > the -test7 kernel. Could you give me some details as to what the fix is > supposed to do and why it may not work?
fixes acpi pci link allocation which could pick a bad irq causing an interrupt storm. typical symptom was hang on boot.
If you see:
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 6 7 10 *11 12) ... ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 6
where the link is not enabled at the current setting (11 in this case, marked by *), you might experience this kind of hang.
> Also, I'd still be interested to know - what is "events/0"?
events/0 is a kernel thread (keventd) used for scheduling work into process context. acpi uses keventd for handling acpi events, for example, so runaway apci events will cause events/0 to chew up cpu.
> And why do > things run like a 286 when I enable HIGHMEM?
I don't know, it shouldn't.
thanks, -chris -- Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |