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SubjectRe: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don't boot
On 02/24/2011 01:27 PM, Nikola Ciprich wrote:
> > Not very useful when the guest is making progress, I'm afraid.
> can perf report help here?
>
> > Can you try a little trace-cmd -e kvm -b 20000?
> ugh, I'm afraid I'll have some dumb questions here :-[
> You mean this: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git ?

Yes. If you have udis86 and udis86-devel installed when building it,
it's even better.

> and then re-execute qemu-kvm using it? or I'm totally wrong?

You don't have to execute qemu-kvm under it, if you have a running
instance you can run trace-cmd in parallel and it will record whatever's
happening.

> > Sure. Something similar that came up - sometimes Windows IDE drivers
> > fall back to PIO mode. Are you using IDE? If so, please check whether
> > it's using DMA or PIO.
> I'll check, but this problem occurs only during fsck phase, when to guest boots, then it runs pretty fast..
> so maybe during boot it might fall back to PIO, but from guest, I guess I won't have a chance
> to find out.. can I somehow check it from host?

The trace-cmd output will show. Please run trace-cmd report afterwards
and post the results somewhere.


--
error compiling committee.c: too many arguments to function



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