From: Chris Wilson Date: Mon, 21 May 2018 08:21:31 +0000 (+0100) Subject: drm/i915: Pin the ring high X-Git-Tag: v4.19~298^2~45^2~51 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2edd4e698dc8a0c497a502c75561c87be0e8a9a6;p=platform%2Fkernel%2Flinux-rpi.git drm/i915: Pin the ring high 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 Cc: Joonas Lahtinen Reviewed-by: Joonas Lahtinen Link: https://patchwork.freedesktop.org/patch/msgid/20180521082131.13744-4-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 757bb09..8948b30 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1034,6 +1034,8 @@ 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)