| Message ID | 20180606062710.29984-13-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 6 June 2018 at 07:27, Chris Wilson <chris@chris-wilson.co.uk> wrote: > If we will completely overwrite the PT with PTEs for the object, we can > forgo filling it with scratch entries. > > References: 14826673247e ("drm/i915: Only initialize partially filled pagetables") > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> > Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> > Cc: Matthew Auld <matthew.william.auld@gmail.com> Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index bb1b26030d81..fd2e3974e688 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1901,7 +1901,8 @@ static int gen6_alloc_va_range(struct i915_address_space *vm, if (IS_ERR(pt)) goto unwind_out; - gen6_initialize_pt(vm, pt); + if (count < GEN6_PTES) + gen6_initialize_pt(vm, pt); ppgtt->base.pd.page_table[pde] = pt; if (i915_vma_is_bound(ppgtt->vma,
If we will completely overwrite the PT with PTEs for the object, we can forgo filling it with scratch entries. References: 14826673247e ("drm/i915: Only initialize partially filled pagetables") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Matthew Auld <matthew.william.auld@gmail.com> --- drivers/gpu/drm/i915/i915_gem_gtt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)