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SubjectRe: [PATCH 2/2] x86_64: Cleanup non-smp usage of cpu maps v3
On Tue, 4 Mar 2008 09:35:07 +0100
Ingo Molnar <mingo@elte.hu> wrote:

>
> * Andrew Morton <akpm@linux-foundation.org> wrote:
>
> > I now recall that it has been happening on every fifth-odd boot for a
> > few weeks now. The machine prints
> >
> > Time: tsc clocksource has been installed
> >
> > then five instances of "system 00:01: iomem range 0x...", then it
> > hangs. ie: it never prints "system 00:01: iomem range
> > 0xfe600000-0xfe6fffff has been reserved" from
> > http://userweb.kernel.org/~akpm/dmesg-akpm2.txt.
> >
> > It may have some correlation with whether the machine was booted via
> > poweron versus `reboot -f', dunno.
>
> the tsc thing seems to be an accidental proximity to me.
>
> such a hard hang has a basic system setup feel to it: the PCI changes in
> 2.6.25 or perhaps some ACPI changes. But it could also be timer related
> (although in that case it typically doesnt hang in the middle of a
> system setup sequence)
>
> i'd say pci=nommconf, but your dmesg has this:
>
> PCI: Not using MMCONFIG.
>
> but, what does seem to be new in your dmesg (i happen to have a historic
> dmesg-akpm2.txt of yours saved away) is:
>
> hpet0: at MMIO 0xfed00000, IRQs 2, 8, 11
> hpet0: 3 64-bit timers, 14318180 Hz
>
> was hpet active on this box before? Try hpet=disable perhaps - does that
> change anything? (But ... this is still a 10% chance suggestion, there's
> way too many other possibilities for such bugs to occur.)
>

I dunno - the machine does this rarely and today seems to be the day on
which it likes to produce its long-occurring doesnt-reboot-at-all problem,
which is different, and might be a BIOS thing.

Now current mainline is giving me this:

zsh: exec format error: /opt/crosstool/gcc-4.0.2-glibc-2.3.6/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-gcc

and /usr/bin/sum matches that binary on a different machine.

I think I'll go home and knit a sweater or something.


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