On Tue, Sep 15, 2015 at 03:30:16PM +0200, Michał Winiarski wrote:
> According to bspec, some parts of HW expect the addresses to be in
> a canonical form where bits [63:48] == [47]. Lets satisfy the HW by
> converting the address prior to allocating/clearing the entries in page
> tables.

You should be a little more specific as to why this is only required for
the ppgtt paths.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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