Re: [GIT PULL] KVM fixes for 2.6.26-rc7

[Bernd Schubert <bernd-schubert@gmx.de>]

On Wednesday 25 June 2008, Marcelo Tosatti wrote:
> On Wed, Jun 25, 2008 at 08:54:44PM +0200, Bernd Schubert wrote:
> > On Wednesday 25 June 2008, Marcelo Tosatti wrote:
> > > On Wed, Jun 25, 2008 at 06:13:05PM +0200, Bernd Schubert wrote:
> > > > Avi Kivity wrote:
> > > > > Linus, please pull from the repo and branch at:
> > > > >
> > > > >   git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm.git
> > > > > kvm-updates-2.6.26
> > > >
> > > > I just pulled from Linus and now it stalls to boot at
> > > >
> > > > [    0.616031] pnp: PnP ACPI init
> > > > [    0.628031] ACPI: bus type pnp registered
> > > > [    0.640031] pnp: PnP ACPI: found 7 devices
> > > > [    0.652031] ACPI: ACPI bus type pnp unregistered
> > > > [    0.660031] SCSI subsystem initialized
> > > > [    0.664031] PCI: Using ACPI for IRQ routing
> > > > [    0.692031] PCI-GART: No AMD northbridge found.
> > > >
> > > > The kvm process is at 100% time. Taking the many problems I already
> > > > reported about, 2.6.26 probably will be entirely broken regarding kvm
> > > > :(
> > >
> > > Do you have CONFIG_KVM_CLOCK or CONFIG_KVM_GUEST enabled ?
> > >
> > > There is a known problem with CONFIG_KVM_GUEST being worked on.
> > >
> > > Can you provide this details, and pinpoint which option is the culprit?
> >
> > Just found out, it is CONFIG_KVM_CLOCK. With CONFIG_KVM_CLOCK=y it does
> > boot fine.
>
> You mean with CONFIG_KVM_CLOCK=n it boots fine, I suppose.

Oh sorry, this was supposed to be "With CONFIG_KVM_GUEST=y it boots fine". So 
yes, CONFIG_KVM_CLOCK is the culprit.

>
> You should upgrade the guest kernel to the git tree, kvm clock changes
> break compatibility with older kernels.

This __is__ the after updating to recent git (before that my problem was 
different). Latest commit is 

commit 543cf4cb3fe6f6cae3651ba918b9c56200b257d0
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue Jun 24 18:58:20 2008 -0700

    Linux 2.6.26-rc8



Thanks,
Bernd