RE: [Xen-devel] Re: is xen_l1_entry_update a nop?

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

>From: Keir Fraser
>Sent: 2006年10月31日 17:44
>
>On 31/10/06 09:30, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:
>
>> However it seems that at least all __set_fix_maps depend on
>> xen_l1_entry_update path, and if it's a nop, how is xenlinux page table
>> modified indeed? Because we did see dom0 working correctly.
>>
>> Our environment is x86-64. :-(
>
>Have you disassembled xen_l1_entry_update() and checked that it
>appears to
>actually execute a hypercall?
>
>The BUG_ON() with side effect is considered bad form. It should really
>be
>if() BUG().
>
> -- Keir

The disassembled code seems correct:
ffffffff8011ba2c <xen_l1_entry_update>:
...
ffffffff8011ba9d:   49 c7 c2 f0 7f 00 00    mov    $0x7ff0,%r10
ffffffff8011baa4:   e8 77 b5 fe ff          callq  ffffffff80107020 
<hypercall_page+0x20>

Actually dom0 works fine and acpi table can be seen correctly. That's why I'm 
interested how dom0 page table is actually updated? :-)

Thanks,
Kevin

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel