From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 27 Jul 2018 09:18:55 +0000 (+0100)
Subject: drm/i915: Eliminate use of PAGE_SIZE as a virtual alignment
X-Git-Tag: v4.20-rc1~81^2~28^2~139
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7a859c655d8f9e83d95ad8e4722c0da6b29590d6;p=thirdparty%2Fkernel%2Flinux.git

drm/i915: Eliminate use of PAGE_SIZE as a virtual alignment

Using PAGE_SIZE for virtual offset alignment is superfluous as it is
equal to the minimum gtt alignment and so equivalent to 0. It is also
the wrong value to use as we stopped using physical page constructs for
the virtual GTT, i.e. it would be preferrable to use I915_GTT_PAGE_SIZE
and in these cases merely imply I915_GTT_MIN_ALIGNMENT.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180727091855.1879-1-chris@chris-wilson.co.uk
---

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 734a789688da0..67c4fc5d737cc 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -513,7 +513,7 @@ int intel_engine_create_scratch(struct intel_engine_cs *engine,
 		goto err_unref;
 	}
 
-	ret = i915_vma_pin(vma, 0, 4096, PIN_GLOBAL | PIN_HIGH);
+	ret = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (ret)
 		goto err_unref;
 
@@ -586,7 +586,7 @@ static int init_status_page(struct intel_engine_cs *engine)
 		flags |= PIN_MAPPABLE;
 	else
 		flags |= PIN_HIGH;
-	ret = i915_vma_pin(vma, 0, 4096, flags);
+	ret = i915_vma_pin(vma, 0, 0, flags);
 	if (ret)
 		goto err;
 
diff --git a/drivers/gpu/drm/i915/intel_guc.c b/drivers/gpu/drm/i915/intel_guc.c
index 3082d7670f058..97460982985cb 100644
--- a/drivers/gpu/drm/i915/intel_guc.c
+++ b/drivers/gpu/drm/i915/intel_guc.c
@@ -659,7 +659,7 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size)
 	if (IS_ERR(vma))
 		goto err;
 
-	ret = i915_vma_pin(vma, 0, PAGE_SIZE,
+	ret = i915_vma_pin(vma, 0, 0,
 			   PIN_GLOBAL | PIN_OFFSET_BIAS | guc->ggtt_pin_bias);
 	if (ret) {
 		vma = ERR_PTR(ret);
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index c52ef2817c968..986f849202908 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1643,7 +1643,7 @@ static int lrc_setup_wa_ctx(struct intel_engine_cs *engine)
 		goto err;
 	}
 
-	err = i915_vma_pin(vma, 0, PAGE_SIZE, PIN_GLOBAL | PIN_HIGH);
+	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (err)
 		goto err;
 
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 33faad3197fee..27b24000412fd 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1035,7 +1035,7 @@ int intel_ring_pin(struct intel_ring *ring,
 			return ret;
 	}
 
-	ret = i915_vma_pin(vma, 0, PAGE_SIZE, flags);
+	ret = i915_vma_pin(vma, 0, 0, flags);
 	if (unlikely(ret))
 		return ret;
 
@@ -1220,8 +1220,7 @@ static int __context_pin(struct intel_context *ce)
 			return err;
 	}
 
-	err = i915_vma_pin(vma, 0, I915_GTT_MIN_ALIGNMENT,
-			   PIN_GLOBAL | PIN_HIGH);
+	err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL | PIN_HIGH);
 	if (err)
 		return err;