Guest physical memory and machine physical memory

Guest physical memory and machine physical memory

[Stefano Righi]

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Hello,
I assume that XEN is making use of EPT in an Intel based system.
How is is possible to translate in dom0 guest physical memory to machine physical memory?
Thank you
Stefano

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Re: Guest physical memory and machine physical memory

[Jeremy Fitzhardinge]

On 03/29/2010 05:46 AM, Stefano Righi wrote:
> Guest physical memory and machine physical memory
>
> How is is possible to translate in dom0 guest physical memory to 
> machine physical memory?
>
> I assume that XEN is making use of EPT in an Intel based system.

PV domains do not (currently, at least) make use of EPT, so it will play 
no part in pseudo-physical to machine physical address translation.  
There are numerous ways of doing this conversion; the appropriate one 
depends on what you're trying to do.  In many cases it will happen 
automatically in the correct places if you're using the appropriate 
kernel APIs.

Which dom0 kernel are you using (pvops based?).

What problem are you trying to solve?

Thanks,
     J