Re: [Xen-devel] xentrace, arm, hvm

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Pavlo,

On 08/02/14 15:51, Pavlo Suikov wrote:
> After making a quick workaround to rcu_lock DOMAIN_XEN on arm (in the
> quite same manner it is done in x86) I've faced different problem.
> Specifically, p2m_lookup for an address in the xen restricted heap fails
> on the very first map call: p2m_map_first returns zero page due to both
> p2m->first_level and p2m_first_level_index(addr) equal to zero. As far
> as I understand xen simply does not know how to make p2m translation for
> it's own restricted heap on arm. Am I right?
Another thing to take into account, xen heap pages can be mapped 
read-only or read-write. You will have to check that when the page is 
mapped into the domain.
--
Julien Grall

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