On Thu, Nov 07, 2013 at 09:33:06AM +0100, Daniel Vetter wrote:
> On Wed, Nov 06, 2013 at 08:05:02PM -0800, Ben Widawsky wrote:
> > This test assumes that using gem_pin will pin in the same address space
> > used by execbuf. Since pin is for the global GTT only, use the existing
> > flag to notify i915.ko that the exec object is special.
> >
> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx>
> > ---
> > tests/gem_pin.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/tests/gem_pin.c b/tests/gem_pin.c
> > index 273315f..ca48a04 100644
> > --- a/tests/gem_pin.c
> > +++ b/tests/gem_pin.c
> > @@ -45,6 +45,8 @@
> > #define BLT_WRITE_ALPHA (1<<21)
> > #define BLT_WRITE_RGB (1<<20)
> >
> > +#define LOCAL__EXEC_OBJ_NEEDS_GTT (1<<1)
> > +
> > static void exec(int fd, uint32_t handle, uint32_t offset)
> > {
> > struct drm_i915_gem_execbuffer2 execbuf;
> > @@ -63,7 +65,7 @@ static void exec(int fd, uint32_t handle, uint32_t offset)
> > gem_exec[0].relocs_ptr = (uintptr_t) gem_reloc;
> > gem_exec[0].alignment = 0;
> > gem_exec[0].offset = 0;
> > - gem_exec[0].flags = 0;
> > + gem_exec[0].flags = LOCAL__EXEC_OBJ_NEEDS_GTT;
>
> This only really works with the aliasing ppgtt stuff on gen6, I'd just
> skip the test -it's not really useful with real ppgtt.
> -Daniel
It is really useful with real ppgtt. Please rethink your assertion.
>
> > gem_exec[0].rsvd1 = 0;
> > gem_exec[0].rsvd2 = 0;
> >
> > --
> > 1.8.4.2
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> +41 (0) 79 365 57 48 - http://blog.ffwll.ch
--
Ben Widawsky, Intel Open Source Technology Center
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