Re: 2.6.35 hangs on early boot in KVM

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On Tuesday 03 Aug 2010 16:17:20 Tvrtko Ursulin wrote:
> On Tuesday 03 Aug 2010 15:57:03 Tvrtko Ursulin wrote:
> > On Tuesday 03 Aug 2010 15:51:08 Avi Kivity wrote:
> > >   On 08/03/2010 12:28 PM, Tvrtko Ursulin wrote:
> > > > I have basically built 2.6.35 with make oldconfig from a working
> > > > 2.6.34. Latter works fine in kvm while 2.6.35 hangs very early. I see
> > > > nothing after grub (have early printk and verbose bootup enabled),
> > > > just a blinking VGA cursor and CPU at 100%.
> > >
> > > Please copy kvm@xxxxxxxxxxxxxxx on kvm issues.
> > >
> > > > CONFIG_PRINTK_TIME=y
> > >
> > > Try disabling this as a workaround.
> >
> > I am in the middle of a bisect run with five builds left to go, currently
> > I have:
> >
> > bad 537b60d17894b7c19a6060feae40299d7109d6e7
> > good 93c9d7f60c0cb7715890b1f9e159da6f4d1f5a65
>
> Bisect is looking good, narrowed it to ten revisions, but I am not sure to
> make it to the end today:
>
> bad cb41838bbc4403f7270a94b93a9a0d9fc9c2e7ea
> good 41d59102e146a4423a490b8eca68a5860af4fe1c
>
> One interesting waning spotted:
>
> include/config/auto.conf:555:warning: symbol value '-fcall-saved-ecx
> -fcall- saved-edx' invalid for ARCH_HWEIGHT_CFLAGS

Copying Peter and Borislav, guys please look at the above warning. I am
bisecting a non-bootable 2.6.35 under KVM and while I am not there yet, it is
close to the hweight commit (cb41838bbc4403f7270a94b93a9a0d9fc9c2e7ea) and I
spotted this warning.

Tvrtko


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