Re: [kvm-devel] paravirt clock stil causing hangs in kvm-65

[Nikola C. <ext...@li...>]

On Mon, 7 Apr 2008, Marcelo Tosatti wrote:

> I think the logic to wakeup tasks in HLT is racy. Nothing prevents
> a timer event from being lost if it fires in between guest exit and
> vcpu_block().
>
> Please try the patch below.
>

Hi Marcelo, the problem persists even with patch.

[ 1905.899112]  [<ffffffff8020a55b>] ? default_idle+0x3b/0x70
[ 1905.899112]  [<ffffffff8020a520>] ? default_idle+0x0/0x70
[ 1905.899112]  [<ffffffff8020a60e>] ? cpu_idle+0x7e/0xe0
[ 1905.899112]  [<ffffffff80211630>] ? pda_init+0x30/0xb0

As I already said, if I enable ACPI, system does not boot at all (even 
with init=/bin/bash) and ends with mentioned trace immediately.

If I disable ACPI, it hangs on "Starting udev", with init=/bin/bash it at 
least boots and I can use shell. At least for some time.
Funny thing is, that If I then use poweroff, the system shuts down, ends with "System 
halted." message, but everything still seems to be working, shell, etc...