Hello Jan,

On Wed, Jan 19, Jan Beulich wrote:

> >>> On 19.01.11 at 10:05, <[email protected]> wrote:
> > (XEN) mm.c:780:d0 Bad L1 flags f0ff000
> > (XEN) mm.c:4655:d0 ptwr_emulate: fixing up invalid PAE PTE 0f0ff00f0ff0f00d
> > (XEN) mm.c:780:d0 Bad L1 flags f0ff000
> > (XEN) mm.c:4655:d0 ptwr_emulate: fixing up invalid PAE PTE 0f0ff00f0ff0f00f
> > (XEN) mm.c:780:d0 Bad L1 flags f0ff000
> > (XEN) mm.c:4655:d0 ptwr_emulate: fixing up invalid PAE PTE 0f0ff00f0ff0f00f
> > (XEN) mm.c:780:d0 Bad L1 flags f0ff000
> > (XEN) mm.c:4655:d0 ptwr_emulate: fixing up invalid PAE PTE 0f0ff00f0ff0f00f
> > (XEN) mm.c:861:d0 Error getting mfn 7f0f (pfn 55555555) from L1 entry 
> > 0000000007f0f00f for l1e_owner=0, pg_owner=0
> > (XEN) mm.c:4660:d0 ptwr_emulate: could not get_page_from_l1e()
> 
> Notice the pattern here, which clearly aren't valid page table
> entries? Without knowing what the kernel does (i.e. how it
> got to use those), we hardly can say more (except that I'm
> unaware of anyone else having such a problem).

Aha, you think that this is a kernel problem ?
So I have to try following parameter to get more output:

kernel ... console=com1 com1=115200 loglvl=all guest_loglvl=all
module ... console=hvc0 earlyprintk=xen nomodeset

is this right, or is there something else to do ?

> Assuming that 64-bit works on the *same* machine, we
> probably can exclude a hardware issue, and hence we'd
> need to see the early kernel log. I'd suggest putting this into
> a bugzilla entry, however.

if I get some messages from kernel, I will open a report.

> Please note in any case that the 32-bit hypervisor should be
> considered deprecated in any case, so unless you have a
> strong need to run 32-bit, I'd strongly recommend using the
> 64-bit hypervisor instead.

I want to use 32bit, because I've 2GB installed only and thought that
32bit needs less invaluable CPU cache for the addresses and so get more
performance.

But when the 32-bit hypervisor is deprecated, I will use the 64bit one
for the future.


-- 
Best regards

  Dieter Bloms

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