If we can use an unmappable ring, try to pin it out of the mappable aperture. This simple layout preference is to try and keep the mappable aperture reserved and available to handle GGTT mmapping requests from userspace without causing evictions and GPU stalls.
Signed-off-by: Chris Wilson <[email protected]> Cc: Joonas Lahtinen <[email protected]> Reviewed-by: Joonas Lahtinen <[email protected]> --- drivers/gpu/drm/i915/intel_ringbuffer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 001cf6bcb349..97b38bbb7ce2 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1049,6 +1049,8 @@ int intel_ring_pin(struct intel_ring *ring, flags |= PIN_OFFSET_BIAS | offset_bias; if (vma->obj->stolen) flags |= PIN_MAPPABLE; + else + flags |= PIN_HIGH; if (!(vma->flags & I915_VMA_GLOBAL_BIND)) { if (flags & PIN_MAPPABLE || map == I915_MAP_WC) -- 2.17.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
