Re: [Xen-devel] [PATCH v5 10/17] xen/arm: map_regions_rw_cache: Map the region with p2m->default_access

[Julien Grall <julien.grall@xxxxxxx>]

(CC Tamas)

On 06/07/16 11:43, Stefano Stabellini wrote:
> On Tue, 28 Jun 2016, Julien Grall wrote:
> > The parameter 'access' is used by memaccess to restrict temporarily the
> > permission. This parameter should not be used for other purpose (such
> > as restricting permanently the permission).
> >
> > The type p2m_mmio_direct will map the region Read-Write and
> > non-executable. Note that this is already the current behavior with the
> > combination of the type and the access. So there is no functional
> > change.
> >
> > Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
> I could be mistaken, but isn't default_access actually p2m_access_rwx?
By default, the access is p2m_access_rwx. However this can be changed by 
memaccess and the new default value is stored in 
arch->p2m.default_access. I have CCed Tamas to confirm that.
Note that this is how the other calls are done.

Regards,

--
Julien Grall

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