drm/i915: Correct PPGTT total size

Our code allows have a PPGTT that is smaller than the maximum size for
GEN6-GEN7. Though I don't think this actually ever occurs, the code may
as well work properly and more importantly look correct by using the
variable size instead of the HW max.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 9150541..7727103 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1192,7 +1192,7 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
        ppgtt->base.insert_entries = gen6_ppgtt_insert_entries;
        ppgtt->base.cleanup = gen6_ppgtt_cleanup;
        ppgtt->base.start = 0;
-       ppgtt->base.total = GEN6_PPGTT_PD_ENTRIES * I915_PPGTT_PT_ENTRIES * PAGE_SIZE;
+       ppgtt->base.total =  ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES * PAGE_SIZE;
        ppgtt->debug_dump = gen6_dump_ppgtt;
 
        ppgtt->pd_offset =