Messages in this thread | | | Date | Thu, 24 Feb 2011 14:26:45 +0200 | From | Avi Kivity <> | Subject | Re: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don't boot |
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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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