On Thu, Apr 05, 2012 at 01:55:12PM +0200, Daniel Vetter wrote:
> On Thu, Apr 5, 2012 at 13:04, Konstantin Belousov <[email protected]> wrote:
> > it seems that the loop in i915_gem_init_aliasing_ppgtt() over pd_entries
> > that calculates pt_addr does nothing after the commit 55a254ac in the
> > !dmar case. Would it be better to move needs_dmar check over the whole
> > loop ?
> 
> For the !dmar case we still need need to compute the physical address
> with page_to_phys, so I think the loop is needed.

Does linux' page_to_phys() has side effects ? I just fail to see where the
pt_addr is used after the calculation.

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