Re: [Xen-devel] Xen with dom0 pvops on ultra-recent "git tip" kernel on x86_64

[Christophe Saout <christophe@xxxxxxxx>]

Hi again,

> > this still occurs.  So far I havent been able to get the full crash
> > since I can't scroll, but from what I have on the screen it is hitting
> > the BUG() in arch/x86/include/asm/mmu_context_64.h in switch_mm:
> 
> I caught one with netconsole, it always seems to be the same (happening
> in different places though):
> 
> ------------[ cut here ]------------
> kernel BUG at /home/chtephan/linux/arch/x86/include/asm/mmu_context_64.h:35!

Bryan Donlan bisected 2.6.29-rc1 and found that reverting commit
e97a630eb0f5b8b380fd67504de6cedebb489003 solves the problem (for me
too).

So, to summarize:

On my notebook (Core 2 Duo, SMP):
- 2.6.29-rc1 tip (with a lot of patch fiddling)
- dom0 working stable (AFAICT)
- CONFIG_EVICATBLE_LRU causes problems in exit_mmap
- CONFIG_PREEMPT seems generally broken with Xen
- AHCI works on SMP, has IRQ problem on UP
- all other hardware works
- X server won't come up (problem in "vgahw" init.), no BUG or Oops

Cheers,
        Christophe



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