From 10ae9bd25acf394c8fa2f9d795dfa9cec4d19ed6 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 1 Feb 2010 13:59:17 +0100 Subject: [PATCH] drm/i915: blow away userspace mappings before fence change This aligns it with the other user of i915_gem_clear_fence_reg, which blows away the mapping before changing the fence reg. Only affects userspace if it races against itself when changing tiling parameters, i.e. behaviour is undefined, anyway. Signed-off-by: Daniel Vetter Reviewed-by: Chris Wilson Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_gem.c | 6 ++++++ drivers/gpu/drm/i915/i915_gem_tiling.c | 6 ------ 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index a236bfb30844..7b12604a9eb8 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2544,6 +2544,12 @@ i915_gem_object_put_fence_reg(struct drm_gem_object *obj) if (obj_priv->fence_reg == I915_FENCE_REG_NONE) return 0; + /* If we've changed tiling, GTT-mappings of the object + * need to re-fault to ensure that the correct fence register + * setup is in place. + */ + i915_gem_release_mmap(obj); + /* On the i915, GPU access to tiled buffers is via a fence, * therefore we must wait for any outstanding access to complete * before clearing the fence. diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c index f308fdf43725..b0cbe3a62f84 100644 --- a/drivers/gpu/drm/i915/i915_gem_tiling.c +++ b/drivers/gpu/drm/i915/i915_gem_tiling.c @@ -371,12 +371,6 @@ i915_gem_set_tiling(struct drm_device *dev, void *data, goto err; } - /* If we've changed tiling, GTT-mappings of the object - * need to re-fault to ensure that the correct fence register - * setup is in place. - */ - i915_gem_release_mmap(obj); - obj_priv->tiling_mode = args->tiling_mode; obj_priv->stride = args->stride; } -- 2.20.1