Re: [Xen-devel] [PATCH v02 1/7] arm: introduce remoteprocessor iommu module

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-07-16 at 16:29 +0100, Ian Campbell wrote:
> WRT the shadowing, I don't see the bit which causes the guest pages
> which it is using as PT page for the remoteproc to get marked R/O to
> force a trap. Perhaps that comes later.
> 
> Do these remoteproc page tables get frequently updated at run time or
> are they mostly just build once and forget?

Reading the next patch I'm concluding that the translation happens each
time you write to the MMU's base pointer. IOW every update requires you
to rewrite that pointer, is that right?

Ian.


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