On Mon, 19 Sep 2011 21:25:03 -0700, Ben Widawsky wrote:
> When doing a GTT mapping, the pages are not backed until taking a fault.
> If we know that the object is write only, when the fault happens we do not
> need
> to make the pages coherent with the CPU. This allows for semi fast prefaults
>
On Mon, Sep 19, 2011 at 10:29:15PM -0700, Keith Packard wrote:
> On Mon, 19 Sep 2011 21:25:03 -0700, Ben Widawsky wrote:
> > When doing a GTT mapping, the pages are not backed until taking a fault.
> > If we know that the object is write only, when the fault happens we do not
> > need
> > to make
On Mon, 19 Sep 2011 21:25:03 -0700, Ben Widawsky wrote:
> When doing a GTT mapping, the pages are not backed until taking a fault.
> If we know that the object is write only, when the fault happens we do not
> need
> to make the pages coherent with the CPU. This allows for semi fast prefaults
>
When doing a GTT mapping, the pages are not backed until taking a fault.
If we know that the object is write only, when the fault happens we do not need
to make the pages coherent with the CPU. This allows for semi fast prefaults
to occur in libdrm at map time.
For the non-GTT case, there isn't m
