On su, 2016-08-07 at 15:45 +0100, Chris Wilson wrote:
> We allocate a few objects into the GGTT that we never need to access via
> the mappable aperture (such as contexts, status pages). We can request
> that these are bound high in the VM to increase the amount of mappable
> aperture available. However, anything that may be frequently pinned
> (such as logical contexts) we want to use the fast search & insert.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_lrc.c | 2 +-
> drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++--
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 309c5d9b1c57..c7f4b64b16f6 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -1182,7 +1182,7 @@ static int lrc_setup_wa_ctx_obj(struct intel_engine_cs *engine, u32 size)
> }
>
> ret = i915_gem_object_ggtt_pin(engine->wa_ctx.obj, NULL,
> - 0, PAGE_SIZE, 0);
> + 0, PAGE_SIZE, PIN_HIGH);
> if (ret) {
> DRM_DEBUG_DRIVER("pin LRC WA ctx backing obj failed: %d\n",
> ret);
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index 16b726fe33eb..09f01c641c14 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -2093,7 +2093,7 @@ static int intel_ring_context_pin(struct i915_gem_context *ctx,
>
> if (ce->state) {
> ret = i915_gem_object_ggtt_pin(ce->state, NULL, 0,
> - ctx->ggtt_alignment, 0);
> + ctx->ggtt_alignment, PIN_HIGH);
> if (ret)
> goto error;
> }
> @@ -2629,7 +2629,8 @@ static void intel_ring_init_semaphores(struct drm_i915_private *dev_priv,
> i915.semaphores = 0;
> } else {
> i915_gem_object_set_cache_level(obj, I915_CACHE_LLC);
> - ret = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
> + ret = i915_gem_object_ggtt_pin(obj, NULL,
> + 0, 0, PIN_HIGH);
> if (ret != 0) {
> i915_gem_object_put(obj);
> DRM_ERROR("Failed to pin semaphore bo. Disabling semaphores\n");
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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