Re: [Xen-devel] xen.git branch reorg / success with 2.6.30-rc3 pv_ops dom0 / CONFIG_HIGHPTE problems

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, May 07, 2009 at 09:46:24PM +0300, Pasi Kärkkäinen wrote:
> On Thu, May 07, 2009 at 11:30:04AM -0700, Jeremy Fitzhardinge wrote:
> > Pasi Kärkkäinen wrote:
> > >I just tried with CONFIG_HIGHPTE=y but that didn't seem to work:
> > >http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-30-xen331-linux-2.6.30-rc3-next-crash-with-highpte.txt
> > >
> > >(XEN) mm.c:2006:d0 Bad type (saw 28000001 != exp e0000000) for mfn 6b0a6 
> > >(pfn 2c959)
> > >(XEN) mm.c:707:d0 Error getting mfn 6b0a6 (pfn 2c959) from L1 entry 
> > >000000006b0a6063 for dom0
> > >(XEN) mm.c:3640:d0 ptwr_emulate: could not get_page_from_l1e()
> > >
> > >BUG: unable to handle kernel paging request at c0207d58
> > >IP: [<c0405bf7>] xen_set_pte+0x89/0x93
> > >*pdpt = 000000003c8ef001 
> > >Oops: 0003 [#1] SMP 
> > >Pid: 323, comm: kswapd0 Not tainted (2.6.30-rc3-tip #34) P8SC8
> > >EIP: 0061:[<c0405bf7>] EFLAGS: 00010296 CPU: 0
> > >EIP is at xen_set_pte+0x89/0x93
> > >EAX: 00000000 EBX: c0207d58 ECX: 00000000 EDX: 6b0a6063
> > >ESI: 00000000 EDI: 000bd778 EBP: e254cd80 ESP: e254cd70
> > > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
> > >Process kswapd0 (pid: 323, ti=e254c000 task=e25c8000 task.ti=e254c000)
> > >  
> > 
> > Hm, can't have everything I suppose...  I wonder what's going on here; I 
> > haven't seen any problems with highpte at all.  Something .config-specific?
> > 
> 
> Hmm.. it could be my .config.
> 
> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.30-rc3-tip-next-with-highpte
> 
> Also attached to this mail. It's originally based on Fedora 10 default kernel 
> config.
> 
> Anything suspicious?
> 

I can also try with your .config .. 

-- Pasi

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