Re: Qemu-upstream with Xen

[Roger Pau Monné <roger.pau%entel.upc.edu@localhost>]

On Wed, Jun 13, 2012 at 4:47 PM, Manuel Bouyer 
<bouyer%antioche.eu.org@localhost> wrote:
> On Wed, Jun 13, 2012 at 03:59:11PM +0100, Roger Pau Monné wrote:
>> On Wed, Jun 13, 2012 at 2:22 PM, Jean-Yves Migeon
>> <jeanyves.migeon%free.fr@localhost> wrote:
>> > Le 13/06/2012 13:05, Roger Pau Monné a écrit :
>> >
>> >> I've debugged this a little bit more, and I've found that
>> >> privpgop_fault gets called, and tries to map the address again after
>> >> the call to xc_domain_add_to_physmap. But the call to pmap_enter_ma
>> >> returns the error 'EFAULT', and thus the segfault in Qemu. The
>> >> previous call to this function in IOCTL_PRIVCMD_MMAPBATCH (which tries
>> >> to detect which pages can be mapped) didn't mark this page as invalid,
>> >> so something must have changed in between... Suggestions are welcome.
>> >
>> >
>> > Nothing appearing on hypervisor console (or xm dmesg?)
>>
>> I'm not able to see anything relevant here, but here's the hypervisor output:
>> [...]
>
> Are you using the xen-debug.gz kernel ?

Yes, I'm using a kernel build with debug=y and I use the following
boot options "loglvl=debug guest_loglvl=debug"