Re: [Xen-devel] several Qs about domain live migration

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 18/11/08 08:22, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx> wrote:

>> Try changing gmfn_to_mfn(FOREIGNDOM, l1e_get_pfn(nl1e)) in mod_l1_entry()
>> to:
>>   mfn = gfn_to_mfn(FOREIGNDOM, l1e_get_pfn(nl1e), &p2mt);
>>   if ( !p2m_is_ram(p2mt) || (mfn == INVALID_MFN) )
>>     ....
>> 
>> This will prevent foreign mappings of 'mmio' pages. Pretty sensible and will
>> fix this problem.
>>   
> 
> It's great!
> Does p2m_is_ram return 1 for video memory?

Yes, since it is just ordinary guest memory. That was the point of Samuel's
patch.

 -- Keir

> I'll make a small patch and test it.



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