[PATCH 1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[PATCH 1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Chris Wilson]

Sometimes we need to create a struct file to wrap a drm_device, as it
the user were to have opened /dev/dri/card0 but to do so anonymously
(i.e. for internal use). Provide a utility method to create a struct
file with the drm_device->driver.fops, that wrap the drm_device.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_file.c | 42 ++++++++++++++++++++++++++++++++++++++
 include/drm/drm_file.h     |  3 +++
 2 files changed, 45 insertions(+)

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index ea34bc991858..cc1267f701c5 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -31,7 +31,9 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/anon_inodes.h>
 #include <linux/dma-fence.h>
+#include <linux/file.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/poll.h>
@@ -754,3 +756,43 @@ void drm_send_event(struct drm_device *dev, struct drm_pending_event *e)
 	spin_unlock_irqrestore(&dev->event_lock, irqflags);
 }
 EXPORT_SYMBOL(drm_send_event);
+
+/**
+ * anon_drm_getfile - Create a new struct file for the drm device
+ * @minor: drm minor to wrap (e.g. drm_device->primary)
+ * @flags: file creation mode (O_RDWR etc)
+ *
+ * This create a new struct file that wraps a DRM file context around a
+ * DRM minor. This mimicks userspace opening e.g. /dev/dri/card0, but without
+ * invoking userspace. The struct file may be operated on using its f_op
+ * (the drm_device.driver.fops) to mimick userspace operations, or be supplied
+ * to userspace facing functions as an internal/anonymous client.
+ *
+ * RETURNS:
+ * Pointer to newly created struct file, ERR_PTR on failure.
+ */
+struct file *anon_drm_getfile(struct drm_minor *minor, unsigned int flags)
+{
+	struct drm_device *dev = minor->dev;
+	struct drm_file *priv;
+	struct file *file;
+
+	priv = drm_file_alloc(minor);
+	if (IS_ERR(priv))
+		return ERR_CAST(priv);
+
+	file = anon_inode_getfile("drm", dev->driver->fops, priv, flags);
+	if (IS_ERR(file)) {
+		drm_file_free(priv);
+		return file;
+	}
+
+	/* Everyone shares a single global address space */
+	file->f_mapping = dev->anon_inode->i_mapping;
+
+	drm_dev_get(dev);
+	priv->filp = file;
+
+	return file;
+}
+EXPORT_SYMBOL(anon_drm_getfile);
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 67af60bb527a..b963535964f7 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -42,6 +42,7 @@ struct dma_fence;
 struct drm_file;
 struct drm_device;
 struct device;
+struct file;
 
 /*
  * FIXME: Not sure we want to have drm_minor here in the end, but to avoid
@@ -387,4 +388,6 @@ void drm_event_cancel_free(struct drm_device *dev,
 void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e);
 void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
 
+struct file *anon_drm_getfile(struct drm_minor *minor, unsigned int flags);
+
 #endif /* _DRM_FILE_H_ */
-- 
2.24.0

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[Intel-gfx] [PATCH 1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Chris Wilson]

Sometimes we need to create a struct file to wrap a drm_device, as it
the user were to have opened /dev/dri/card0 but to do so anonymously
(i.e. for internal use). Provide a utility method to create a struct
file with the drm_device->driver.fops, that wrap the drm_device.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_file.c | 42 ++++++++++++++++++++++++++++++++++++++
 include/drm/drm_file.h     |  3 +++
 2 files changed, 45 insertions(+)

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index ea34bc991858..cc1267f701c5 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -31,7 +31,9 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/anon_inodes.h>
 #include <linux/dma-fence.h>
+#include <linux/file.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/poll.h>
@@ -754,3 +756,43 @@ void drm_send_event(struct drm_device *dev, struct drm_pending_event *e)
 	spin_unlock_irqrestore(&dev->event_lock, irqflags);
 }
 EXPORT_SYMBOL(drm_send_event);
+
+/**
+ * anon_drm_getfile - Create a new struct file for the drm device
+ * @minor: drm minor to wrap (e.g. drm_device->primary)
+ * @flags: file creation mode (O_RDWR etc)
+ *
+ * This create a new struct file that wraps a DRM file context around a
+ * DRM minor. This mimicks userspace opening e.g. /dev/dri/card0, but without
+ * invoking userspace. The struct file may be operated on using its f_op
+ * (the drm_device.driver.fops) to mimick userspace operations, or be supplied
+ * to userspace facing functions as an internal/anonymous client.
+ *
+ * RETURNS:
+ * Pointer to newly created struct file, ERR_PTR on failure.
+ */
+struct file *anon_drm_getfile(struct drm_minor *minor, unsigned int flags)
+{
+	struct drm_device *dev = minor->dev;
+	struct drm_file *priv;
+	struct file *file;
+
+	priv = drm_file_alloc(minor);
+	if (IS_ERR(priv))
+		return ERR_CAST(priv);
+
+	file = anon_inode_getfile("drm", dev->driver->fops, priv, flags);
+	if (IS_ERR(file)) {
+		drm_file_free(priv);
+		return file;
+	}
+
+	/* Everyone shares a single global address space */
+	file->f_mapping = dev->anon_inode->i_mapping;
+
+	drm_dev_get(dev);
+	priv->filp = file;
+
+	return file;
+}
+EXPORT_SYMBOL(anon_drm_getfile);
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 67af60bb527a..b963535964f7 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -42,6 +42,7 @@ struct dma_fence;
 struct drm_file;
 struct drm_device;
 struct device;
+struct file;
 
 /*
  * FIXME: Not sure we want to have drm_minor here in the end, but to avoid
@@ -387,4 +388,6 @@ void drm_event_cancel_free(struct drm_device *dev,
 void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e);
 void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
 
+struct file *anon_drm_getfile(struct drm_minor *minor, unsigned int flags);
+
 #endif /* _DRM_FILE_H_ */
-- 
2.24.0

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[PATCH 2/4] drm/i915/selftests: Replace mock_file hackery with drm's true fake

[Chris Wilson]

As drm now exports a method to create an anonymous struct file around a
drm_device for internal use, make use of it to avoid our horrible hacks.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 .../gpu/drm/i915/gem/selftests/huge_pages.c   |  2 +-
 .../drm/i915/gem/selftests/i915_gem_context.c | 12 ++---
 .../i915/gem/selftests/i915_gem_object_blt.c  |  4 +-
 drivers/gpu/drm/i915/gt/selftest_context.c    |  4 +-
 drivers/gpu/drm/i915/gt/selftest_hangcheck.c  |  8 +--
 .../gpu/drm/i915/gt/selftest_workarounds.c    |  2 +-
 drivers/gpu/drm/i915/selftests/i915_gem.c     |  4 +-
 .../gpu/drm/i915/selftests/i915_gem_evict.c   |  2 +-
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c |  4 +-
 drivers/gpu/drm/i915/selftests/i915_request.c |  2 +-
 .../drm/i915/selftests/intel_memory_region.c  |  2 +-
 drivers/gpu/drm/i915/selftests/mock_drm.c     | 49 +++----------------
 drivers/gpu/drm/i915/selftests/mock_drm.h     |  8 ++-
 13 files changed, 37 insertions(+), 66 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index 688c49a24f32..06dad7b0db82 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -1944,6 +1944,6 @@ int i915_gem_huge_page_live_selftests(struct drm_i915_private *i915)
 	err = i915_subtests(tests, ctx);
 
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index 62fabc023a83..47890c92534c 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -149,7 +149,7 @@ static int live_nop_switch(void *arg)
 	}
 
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -377,7 +377,7 @@ static int live_parallel_switch(void *arg)
 	}
 	kfree(data);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -716,7 +716,7 @@ static int igt_ctx_exec(void *arg)
 		if (igt_live_test_end(&t))
 			err = -EIO;
 
-		mock_file_free(i915, file);
+		mock_file_put(file);
 		if (err)
 			return err;
 
@@ -854,7 +854,7 @@ static int igt_shared_ctx_exec(void *arg)
 	if (igt_live_test_end(&t))
 		err = -EIO;
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1426,7 +1426,7 @@ static int igt_ctx_readonly(void *arg)
 	if (igt_live_test_end(&t))
 		err = -EIO;
 
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1750,7 +1750,7 @@ static int igt_vm_isolation(void *arg)
 out_file:
 	if (igt_live_test_end(&t))
 		err = -EIO;
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
index e8132aca0bb6..d9fdfddb7091 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
@@ -301,7 +301,7 @@ static int igt_fill_blt_thread(void *arg)
 
 	intel_context_put(ce);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -432,7 +432,7 @@ static int igt_copy_blt_thread(void *arg)
 
 	intel_context_put(ce);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_context.c b/drivers/gpu/drm/i915/gt/selftest_context.c
index bc720defc6b8..a5688f7d9073 100644
--- a/drivers/gpu/drm/i915/gt/selftest_context.c
+++ b/drivers/gpu/drm/i915/gt/selftest_context.c
@@ -313,7 +313,7 @@ static int live_active_context(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -423,7 +423,7 @@ static int live_remote_context(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 85e9ccf5c304..cdaaee4432b2 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -439,7 +439,7 @@ static int igt_reset_nop(void *arg)
 
 	err = igt_flush_test(gt->i915);
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	if (intel_gt_is_wedged(gt))
 		err = -EIO;
 	return err;
@@ -535,7 +535,7 @@ static int igt_reset_nop_engine(void *arg)
 
 	err = igt_flush_test(gt->i915);
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	if (intel_gt_is_wedged(gt))
 		err = -EIO;
 	return err;
@@ -752,7 +752,7 @@ static int active_engine(void *data)
 	}
 
 err_file:
-	mock_file_free(engine->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1325,7 +1325,7 @@ static int igt_reset_evict_ppgtt(void *arg)
 	i915_vm_put(vm);
 
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index abce6e4ec9c0..5c69ec5c5ef9 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -739,7 +739,7 @@ static int live_dirty_whitelist(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c
index d83f6bf6d9d4..aa6282adfd09 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem.c
@@ -163,7 +163,7 @@ static int igt_gem_suspend(void *arg)
 
 	err = switch_to_context(ctx);
 out:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -198,7 +198,7 @@ static int igt_gem_hibernate(void *arg)
 
 	err = switch_to_context(ctx);
 out:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 42e948144f1b..41092dcea5b1 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -515,7 +515,7 @@ static int igt_evict_contexts(void *arg)
 		pr_info("Submitted %lu contexts/requests on %s\n",
 			count, engine->name);
 
-		mock_file_free(i915, file);
+		mock_file_put(file);
 		if (err)
 			break;
 	}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 3f7e80fb3bbd..c3e0d63c4d0c 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1026,7 +1026,7 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
 	i915_vm_put(&ppgtt->vm);
 
 out_free:
-	mock_file_free(dev_priv, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -2022,7 +2022,7 @@ static int igt_cs_tlb(void *arg)
 out_vm:
 	i915_vm_put(vm);
 out_unlock:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
index 9e6d3159cd80..7c56ee38cc5b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -1430,7 +1430,7 @@ static int live_breadcrumbs_smoketest(void *arg)
 out_smoke:
 	kfree(smoke);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 out_rpm:
 	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
 
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
index 19e1cca8f143..fa283ce4532a 100644
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -439,7 +439,7 @@ static int igt_lmem_write_gpu(void *arg)
 out_put:
 	i915_gem_object_put(obj);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.c b/drivers/gpu/drm/i915/selftests/mock_drm.c
index 09c704153456..1b619d1f229f 100644
--- a/drivers/gpu/drm/i915/selftests/mock_drm.c
+++ b/drivers/gpu/drm/i915/selftests/mock_drm.c
@@ -22,52 +22,17 @@
  *
  */
 
+#include <drm/drm_file.h>
+
 #include "mock_drm.h"
 
 struct drm_file *mock_file(struct drm_i915_private *i915)
 {
-	struct file *filp;
-	struct inode *inode;
-	struct drm_file *file;
-	int err;
-
-	inode = kzalloc(sizeof(*inode), GFP_KERNEL);
-	if (!inode) {
-		err = -ENOMEM;
-		goto err;
-	}
-
-	inode->i_rdev = i915->drm.primary->index;
-
-	filp = kzalloc(sizeof(*filp), GFP_KERNEL);
-	if (!filp) {
-		err = -ENOMEM;
-		goto err_inode;
-	}
-
-	err = drm_open(inode, filp);
-	if (err)
-		goto err_filp;
+	struct file *file;
 
-	file = filp->private_data;
-	memset(&file->filp, POISON_INUSE, sizeof(file->filp));
-	file->authenticated = true;
-
-	kfree(filp);
-	kfree(inode);
-	return file;
-
-err_filp:
-	kfree(filp);
-err_inode:
-	kfree(inode);
-err:
-	return ERR_PTR(err);
-}
-
-void mock_file_free(struct drm_i915_private *i915, struct drm_file *file)
-{
-	struct file filp = { .private_data = file };
+	file = anon_drm_getfile(i915->drm.primary, O_RDWR);
+	if (IS_ERR(file))
+		return ERR_CAST(file);
 
-	drm_release(NULL, &filp);
+	return file->private_data;
 }
diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.h b/drivers/gpu/drm/i915/selftests/mock_drm.h
index b39beee9f8f6..dc4190bd3f5a 100644
--- a/drivers/gpu/drm/i915/selftests/mock_drm.h
+++ b/drivers/gpu/drm/i915/selftests/mock_drm.h
@@ -25,7 +25,13 @@
 #ifndef __MOCK_DRM_H
 #define __MOCK_DRM_H
 
+struct drm_file;
+struct drm_i915_private;
+
 struct drm_file *mock_file(struct drm_i915_private *i915);
-void mock_file_free(struct drm_i915_private *i915, struct drm_file *file);
+static inline void mock_file_put(struct drm_file *file)
+{
+	fput(file->filp);
+}
 
 #endif /* !__MOCK_DRM_H */
-- 
2.24.0

_______________________________________________
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[Intel-gfx] [PATCH 2/4] drm/i915/selftests: Replace mock_file hackery with drm's true fake

[Chris Wilson]

As drm now exports a method to create an anonymous struct file around a
drm_device for internal use, make use of it to avoid our horrible hacks.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 .../gpu/drm/i915/gem/selftests/huge_pages.c   |  2 +-
 .../drm/i915/gem/selftests/i915_gem_context.c | 12 ++---
 .../i915/gem/selftests/i915_gem_object_blt.c  |  4 +-
 drivers/gpu/drm/i915/gt/selftest_context.c    |  4 +-
 drivers/gpu/drm/i915/gt/selftest_hangcheck.c  |  8 +--
 .../gpu/drm/i915/gt/selftest_workarounds.c    |  2 +-
 drivers/gpu/drm/i915/selftests/i915_gem.c     |  4 +-
 .../gpu/drm/i915/selftests/i915_gem_evict.c   |  2 +-
 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c |  4 +-
 drivers/gpu/drm/i915/selftests/i915_request.c |  2 +-
 .../drm/i915/selftests/intel_memory_region.c  |  2 +-
 drivers/gpu/drm/i915/selftests/mock_drm.c     | 49 +++----------------
 drivers/gpu/drm/i915/selftests/mock_drm.h     |  8 ++-
 13 files changed, 37 insertions(+), 66 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index 688c49a24f32..06dad7b0db82 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -1944,6 +1944,6 @@ int i915_gem_huge_page_live_selftests(struct drm_i915_private *i915)
 	err = i915_subtests(tests, ctx);
 
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index 62fabc023a83..47890c92534c 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -149,7 +149,7 @@ static int live_nop_switch(void *arg)
 	}
 
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -377,7 +377,7 @@ static int live_parallel_switch(void *arg)
 	}
 	kfree(data);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -716,7 +716,7 @@ static int igt_ctx_exec(void *arg)
 		if (igt_live_test_end(&t))
 			err = -EIO;
 
-		mock_file_free(i915, file);
+		mock_file_put(file);
 		if (err)
 			return err;
 
@@ -854,7 +854,7 @@ static int igt_shared_ctx_exec(void *arg)
 	if (igt_live_test_end(&t))
 		err = -EIO;
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1426,7 +1426,7 @@ static int igt_ctx_readonly(void *arg)
 	if (igt_live_test_end(&t))
 		err = -EIO;
 
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1750,7 +1750,7 @@ static int igt_vm_isolation(void *arg)
 out_file:
 	if (igt_live_test_end(&t))
 		err = -EIO;
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
index e8132aca0bb6..d9fdfddb7091 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
@@ -301,7 +301,7 @@ static int igt_fill_blt_thread(void *arg)
 
 	intel_context_put(ce);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -432,7 +432,7 @@ static int igt_copy_blt_thread(void *arg)
 
 	intel_context_put(ce);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_context.c b/drivers/gpu/drm/i915/gt/selftest_context.c
index bc720defc6b8..a5688f7d9073 100644
--- a/drivers/gpu/drm/i915/gt/selftest_context.c
+++ b/drivers/gpu/drm/i915/gt/selftest_context.c
@@ -313,7 +313,7 @@ static int live_active_context(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -423,7 +423,7 @@ static int live_remote_context(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index 85e9ccf5c304..cdaaee4432b2 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -439,7 +439,7 @@ static int igt_reset_nop(void *arg)
 
 	err = igt_flush_test(gt->i915);
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	if (intel_gt_is_wedged(gt))
 		err = -EIO;
 	return err;
@@ -535,7 +535,7 @@ static int igt_reset_nop_engine(void *arg)
 
 	err = igt_flush_test(gt->i915);
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	if (intel_gt_is_wedged(gt))
 		err = -EIO;
 	return err;
@@ -752,7 +752,7 @@ static int active_engine(void *data)
 	}
 
 err_file:
-	mock_file_free(engine->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -1325,7 +1325,7 @@ static int igt_reset_evict_ppgtt(void *arg)
 	i915_vm_put(vm);
 
 out:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_workarounds.c b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
index abce6e4ec9c0..5c69ec5c5ef9 100644
--- a/drivers/gpu/drm/i915/gt/selftest_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/selftest_workarounds.c
@@ -739,7 +739,7 @@ static int live_dirty_whitelist(void *arg)
 	}
 
 out_file:
-	mock_file_free(gt->i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c
index d83f6bf6d9d4..aa6282adfd09 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem.c
@@ -163,7 +163,7 @@ static int igt_gem_suspend(void *arg)
 
 	err = switch_to_context(ctx);
 out:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -198,7 +198,7 @@ static int igt_gem_hibernate(void *arg)
 
 	err = switch_to_context(ctx);
 out:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index 42e948144f1b..41092dcea5b1 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -515,7 +515,7 @@ static int igt_evict_contexts(void *arg)
 		pr_info("Submitted %lu contexts/requests on %s\n",
 			count, engine->name);
 
-		mock_file_free(i915, file);
+		mock_file_put(file);
 		if (err)
 			break;
 	}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index 3f7e80fb3bbd..c3e0d63c4d0c 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -1026,7 +1026,7 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
 	i915_vm_put(&ppgtt->vm);
 
 out_free:
-	mock_file_free(dev_priv, file);
+	mock_file_put(file);
 	return err;
 }
 
@@ -2022,7 +2022,7 @@ static int igt_cs_tlb(void *arg)
 out_vm:
 	i915_vm_put(vm);
 out_unlock:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
index 9e6d3159cd80..7c56ee38cc5b 100644
--- a/drivers/gpu/drm/i915/selftests/i915_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -1430,7 +1430,7 @@ static int live_breadcrumbs_smoketest(void *arg)
 out_smoke:
 	kfree(smoke);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 out_rpm:
 	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
 
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
index 19e1cca8f143..fa283ce4532a 100644
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -439,7 +439,7 @@ static int igt_lmem_write_gpu(void *arg)
 out_put:
 	i915_gem_object_put(obj);
 out_file:
-	mock_file_free(i915, file);
+	mock_file_put(file);
 	return err;
 }
 
diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.c b/drivers/gpu/drm/i915/selftests/mock_drm.c
index 09c704153456..1b619d1f229f 100644
--- a/drivers/gpu/drm/i915/selftests/mock_drm.c
+++ b/drivers/gpu/drm/i915/selftests/mock_drm.c
@@ -22,52 +22,17 @@
  *
  */
 
+#include <drm/drm_file.h>
+
 #include "mock_drm.h"
 
 struct drm_file *mock_file(struct drm_i915_private *i915)
 {
-	struct file *filp;
-	struct inode *inode;
-	struct drm_file *file;
-	int err;
-
-	inode = kzalloc(sizeof(*inode), GFP_KERNEL);
-	if (!inode) {
-		err = -ENOMEM;
-		goto err;
-	}
-
-	inode->i_rdev = i915->drm.primary->index;
-
-	filp = kzalloc(sizeof(*filp), GFP_KERNEL);
-	if (!filp) {
-		err = -ENOMEM;
-		goto err_inode;
-	}
-
-	err = drm_open(inode, filp);
-	if (err)
-		goto err_filp;
+	struct file *file;
 
-	file = filp->private_data;
-	memset(&file->filp, POISON_INUSE, sizeof(file->filp));
-	file->authenticated = true;
-
-	kfree(filp);
-	kfree(inode);
-	return file;
-
-err_filp:
-	kfree(filp);
-err_inode:
-	kfree(inode);
-err:
-	return ERR_PTR(err);
-}
-
-void mock_file_free(struct drm_i915_private *i915, struct drm_file *file)
-{
-	struct file filp = { .private_data = file };
+	file = anon_drm_getfile(i915->drm.primary, O_RDWR);
+	if (IS_ERR(file))
+		return ERR_CAST(file);
 
-	drm_release(NULL, &filp);
+	return file->private_data;
 }
diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.h b/drivers/gpu/drm/i915/selftests/mock_drm.h
index b39beee9f8f6..dc4190bd3f5a 100644
--- a/drivers/gpu/drm/i915/selftests/mock_drm.h
+++ b/drivers/gpu/drm/i915/selftests/mock_drm.h
@@ -25,7 +25,13 @@
 #ifndef __MOCK_DRM_H
 #define __MOCK_DRM_H
 
+struct drm_file;
+struct drm_i915_private;
+
 struct drm_file *mock_file(struct drm_i915_private *i915);
-void mock_file_free(struct drm_i915_private *i915, struct drm_file *file);
+static inline void mock_file_put(struct drm_file *file)
+{
+	fput(file->filp);
+}
 
 #endif /* !__MOCK_DRM_H */
-- 
2.24.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[PATCH 3/4] drm/i915/selftests: Wrap vm_mmap() around GEM objects

[Chris Wilson]

Provide a utility function to create a vma corresponding to an mmap() of
our device. And use it to exercise the equivalent of userspace
performing a GTT mmap of our objects.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 drivers/gpu/drm/i915/Makefile                 |  1 +
 .../drm/i915/gem/selftests/i915_gem_mman.c    | 97 +++++++++++++++++++
 drivers/gpu/drm/i915/selftests/igt_mmap.c     | 39 ++++++++
 drivers/gpu/drm/i915/selftests/igt_mmap.h     | 19 ++++
 4 files changed, 156 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/selftests/igt_mmap.c
 create mode 100644 drivers/gpu/drm/i915/selftests/igt_mmap.h

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 90dcf09f52cc..e0fd10c0cfb8 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -259,6 +259,7 @@ i915-$(CONFIG_DRM_I915_SELFTEST) += \
 	selftests/i915_selftest.o \
 	selftests/igt_flush_test.o \
 	selftests/igt_live_test.o \
+	selftests/igt_mmap.o \
 	selftests/igt_reset.o \
 	selftests/igt_spinner.o
 
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 29b2077b73d2..3c8f2297be86 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -12,6 +12,7 @@
 #include "i915_selftest.h"
 #include "selftests/i915_random.h"
 #include "selftests/igt_flush_test.h"
+#include "selftests/igt_mmap.h"
 
 struct tile {
 	unsigned int width;
@@ -694,12 +695,108 @@ static int igt_mmap_offset_exhaustion(void *arg)
 	goto out;
 }
 
+#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))
+static int igt_mmap_gtt(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	struct vm_area_struct *area;
+	unsigned long addr;
+	void *vaddr;
+	int err, i;
+
+	obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		goto out;
+	}
+	memset(vaddr, POISON_INUSE, PAGE_SIZE);
+	i915_gem_object_flush_map(obj);
+	i915_gem_object_unpin_map(obj);
+
+	err = create_mmap_offset(obj);
+	if (err)
+		goto out;
+
+	addr = igt_mmap_node(i915, &obj->base.vma_node,
+			     0, PROT_WRITE, MAP_SHARED);
+	if (IS_ERR_VALUE(addr)) {
+		err = addr;
+		goto out;
+	}
+
+	pr_debug("igt_mmap(obj:gtt) @ %lx\n", addr);
+
+	area = find_vma(current->mm, addr);
+	if (!area) {
+		pr_err("Did not create a vm_area_struct for the mmap\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	if (area->vm_private_data != obj) {
+		pr_err("vm_area_struct did not point back to our object!\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	for (i = 0; i < PAGE_SIZE / sizeof(u32); i++) {
+		u32 __user *ux = u64_to_user_ptr((u64)(addr + i * sizeof*(ux)));
+		u32 x;
+
+		if (get_user(x, ux)) {
+			pr_err("Unable to read from GTT mmap, offset:%zd\n",
+			       i * sizeof(x));
+			err = -EFAULT;
+			break;
+		}
+
+		if (x != expand32(POISON_INUSE)) {
+			pr_err("Read incorrect value from GTT mmap, offset:%zd, found:%x, expected:%x\n",
+			       i * sizeof(x), x, expand32(POISON_INUSE));
+			err = -EINVAL;
+			break;
+		}
+
+		x = expand32(POISON_FREE);
+		if (put_user(x, ux)) {
+			pr_err("Unable to write to GTT mmap, offset:%zd\n",
+			       i * sizeof(x));
+			err = -EFAULT;
+			break;
+		}
+	}
+
+out_unmap:
+	vm_munmap(addr, PAGE_SIZE);
+
+	vaddr = i915_gem_object_pin_map(obj, I915_MAP_FORCE_WC);
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		goto out;
+	}
+	if (err == 0 && memchr_inv(vaddr, POISON_FREE, PAGE_SIZE)) {
+		pr_err("Write via GGTT mmap did not land in backing store\n");
+		err = -EINVAL;
+	}
+	i915_gem_object_unpin_map(obj);
+
+out:
+	i915_gem_object_put(obj);
+	return err;
+}
+
 int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
 		SUBTEST(igt_partial_tiling),
 		SUBTEST(igt_smoke_tiling),
 		SUBTEST(igt_mmap_offset_exhaustion),
+		SUBTEST(igt_mmap_gtt),
 	};
 
 	return i915_subtests(tests, i915);
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.c b/drivers/gpu/drm/i915/selftests/igt_mmap.c
new file mode 100644
index 000000000000..f5bc80e92573
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.c
@@ -0,0 +1,39 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <drm/drm_file.h>
+
+#include "i915_drv.h"
+#include "igt_mmap.h"
+
+unsigned long igt_mmap_node(struct drm_i915_private *i915,
+			    struct drm_vma_offset_node *node,
+			    unsigned long addr,
+			    unsigned long prot,
+			    unsigned long flags)
+{
+	struct file *file;
+	int err;
+
+	/* Pretend to open("/dev/dri/card0") */
+	file = anon_drm_getfile(i915->drm.primary, O_RDWR);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = drm_vma_node_allow(node, file->private_data);
+	if (err) {
+		addr = err;
+		goto out_file;
+	}
+
+	addr = vm_mmap(file, addr, drm_vma_node_size(node) << PAGE_SHIFT,
+		       prot, flags, drm_vma_node_offset_addr(node));
+
+	drm_vma_node_revoke(node, file->private_data);
+out_file:
+	fput(file);
+	return addr;
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.h b/drivers/gpu/drm/i915/selftests/igt_mmap.h
new file mode 100644
index 000000000000..6e716cb59d7e
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.h
@@ -0,0 +1,19 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef IGT_MMAP_H
+#define IGT_MMAP_H
+
+struct drm_i915_private;
+struct drm_vma_offset_node;
+
+unsigned long igt_mmap_node(struct drm_i915_private *i915,
+			    struct drm_vma_offset_node *node,
+			    unsigned long addr,
+			    unsigned long prot,
+			    unsigned long flags);
+
+#endif /* IGT_MMAP_H */
-- 
2.24.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[Intel-gfx] [PATCH 3/4] drm/i915/selftests: Wrap vm_mmap() around GEM objects

[Chris Wilson]

Provide a utility function to create a vma corresponding to an mmap() of
our device. And use it to exercise the equivalent of userspace
performing a GTT mmap of our objects.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 drivers/gpu/drm/i915/Makefile                 |  1 +
 .../drm/i915/gem/selftests/i915_gem_mman.c    | 97 +++++++++++++++++++
 drivers/gpu/drm/i915/selftests/igt_mmap.c     | 39 ++++++++
 drivers/gpu/drm/i915/selftests/igt_mmap.h     | 19 ++++
 4 files changed, 156 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/selftests/igt_mmap.c
 create mode 100644 drivers/gpu/drm/i915/selftests/igt_mmap.h

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 90dcf09f52cc..e0fd10c0cfb8 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -259,6 +259,7 @@ i915-$(CONFIG_DRM_I915_SELFTEST) += \
 	selftests/i915_selftest.o \
 	selftests/igt_flush_test.o \
 	selftests/igt_live_test.o \
+	selftests/igt_mmap.o \
 	selftests/igt_reset.o \
 	selftests/igt_spinner.o
 
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 29b2077b73d2..3c8f2297be86 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -12,6 +12,7 @@
 #include "i915_selftest.h"
 #include "selftests/i915_random.h"
 #include "selftests/igt_flush_test.h"
+#include "selftests/igt_mmap.h"
 
 struct tile {
 	unsigned int width;
@@ -694,12 +695,108 @@ static int igt_mmap_offset_exhaustion(void *arg)
 	goto out;
 }
 
+#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))
+static int igt_mmap_gtt(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	struct vm_area_struct *area;
+	unsigned long addr;
+	void *vaddr;
+	int err, i;
+
+	obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vaddr = i915_gem_object_pin_map(obj, I915_MAP_WB);
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		goto out;
+	}
+	memset(vaddr, POISON_INUSE, PAGE_SIZE);
+	i915_gem_object_flush_map(obj);
+	i915_gem_object_unpin_map(obj);
+
+	err = create_mmap_offset(obj);
+	if (err)
+		goto out;
+
+	addr = igt_mmap_node(i915, &obj->base.vma_node,
+			     0, PROT_WRITE, MAP_SHARED);
+	if (IS_ERR_VALUE(addr)) {
+		err = addr;
+		goto out;
+	}
+
+	pr_debug("igt_mmap(obj:gtt) @ %lx\n", addr);
+
+	area = find_vma(current->mm, addr);
+	if (!area) {
+		pr_err("Did not create a vm_area_struct for the mmap\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	if (area->vm_private_data != obj) {
+		pr_err("vm_area_struct did not point back to our object!\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	for (i = 0; i < PAGE_SIZE / sizeof(u32); i++) {
+		u32 __user *ux = u64_to_user_ptr((u64)(addr + i * sizeof*(ux)));
+		u32 x;
+
+		if (get_user(x, ux)) {
+			pr_err("Unable to read from GTT mmap, offset:%zd\n",
+			       i * sizeof(x));
+			err = -EFAULT;
+			break;
+		}
+
+		if (x != expand32(POISON_INUSE)) {
+			pr_err("Read incorrect value from GTT mmap, offset:%zd, found:%x, expected:%x\n",
+			       i * sizeof(x), x, expand32(POISON_INUSE));
+			err = -EINVAL;
+			break;
+		}
+
+		x = expand32(POISON_FREE);
+		if (put_user(x, ux)) {
+			pr_err("Unable to write to GTT mmap, offset:%zd\n",
+			       i * sizeof(x));
+			err = -EFAULT;
+			break;
+		}
+	}
+
+out_unmap:
+	vm_munmap(addr, PAGE_SIZE);
+
+	vaddr = i915_gem_object_pin_map(obj, I915_MAP_FORCE_WC);
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		goto out;
+	}
+	if (err == 0 && memchr_inv(vaddr, POISON_FREE, PAGE_SIZE)) {
+		pr_err("Write via GGTT mmap did not land in backing store\n");
+		err = -EINVAL;
+	}
+	i915_gem_object_unpin_map(obj);
+
+out:
+	i915_gem_object_put(obj);
+	return err;
+}
+
 int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
 		SUBTEST(igt_partial_tiling),
 		SUBTEST(igt_smoke_tiling),
 		SUBTEST(igt_mmap_offset_exhaustion),
+		SUBTEST(igt_mmap_gtt),
 	};
 
 	return i915_subtests(tests, i915);
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.c b/drivers/gpu/drm/i915/selftests/igt_mmap.c
new file mode 100644
index 000000000000..f5bc80e92573
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.c
@@ -0,0 +1,39 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <drm/drm_file.h>
+
+#include "i915_drv.h"
+#include "igt_mmap.h"
+
+unsigned long igt_mmap_node(struct drm_i915_private *i915,
+			    struct drm_vma_offset_node *node,
+			    unsigned long addr,
+			    unsigned long prot,
+			    unsigned long flags)
+{
+	struct file *file;
+	int err;
+
+	/* Pretend to open("/dev/dri/card0") */
+	file = anon_drm_getfile(i915->drm.primary, O_RDWR);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = drm_vma_node_allow(node, file->private_data);
+	if (err) {
+		addr = err;
+		goto out_file;
+	}
+
+	addr = vm_mmap(file, addr, drm_vma_node_size(node) << PAGE_SHIFT,
+		       prot, flags, drm_vma_node_offset_addr(node));
+
+	drm_vma_node_revoke(node, file->private_data);
+out_file:
+	fput(file);
+	return addr;
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.h b/drivers/gpu/drm/i915/selftests/igt_mmap.h
new file mode 100644
index 000000000000..6e716cb59d7e
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.h
@@ -0,0 +1,19 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef IGT_MMAP_H
+#define IGT_MMAP_H
+
+struct drm_i915_private;
+struct drm_vma_offset_node;
+
+unsigned long igt_mmap_node(struct drm_i915_private *i915,
+			    struct drm_vma_offset_node *node,
+			    unsigned long addr,
+			    unsigned long prot,
+			    unsigned long flags);
+
+#endif /* IGT_MMAP_H */
-- 
2.24.0

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[PATCH 4/4] drm/i915/selftests: Verify mmap_gtt revocation on unbinding

[Chris Wilson]

Whenever, we unbind (or change fence registers) on an object, we must
revoke any and all mmap_gtt using the previous bindings. Those user PTEs
point at the GGTT which know points into a new object, the wrong object.
Ergo, those PTEs must be cleared so that any user access provokes a new
page fault.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 .../drm/i915/gem/selftests/i915_gem_mman.c    | 117 ++++++++++++++++++
 1 file changed, 117 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 3c8f2297be86..bd80b19d4e39 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -790,6 +790,122 @@ static int igt_mmap_gtt(void *arg)
 	return err;
 }
 
+static int check_present_pte(pte_t *pte, unsigned long addr, void *data)
+{
+	if (!pte_present(*pte) || pte_none(*pte)) {
+		pr_err("missing PTE:%lx\n",
+		       (addr - (unsigned long)data) >> PAGE_SHIFT);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_absent_pte(pte_t *pte, unsigned long addr, void *data)
+{
+	if (pte_present(*pte) && !pte_none(*pte)) {
+		pr_err("present PTE:%lx; expected to be revoked\n",
+		       (addr - (unsigned long)data) >> PAGE_SHIFT);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_present(struct vm_area_struct *vma,
+			 unsigned long addr, unsigned long len)
+{
+	return apply_to_page_range(vma->vm_mm, addr, len,
+				   check_present_pte, (void *)addr);
+}
+
+static int check_absent(struct vm_area_struct *vma,
+			unsigned long addr, unsigned long len)
+{
+	return apply_to_page_range(vma->vm_mm, addr, len,
+				   check_absent_pte, (void *)addr);
+}
+
+static int prefault_range(u64 start, u64 len)
+{
+	const char __user *addr, *end;
+	char __maybe_unused c;
+
+	addr = u64_to_user_ptr(start);
+	end = addr + len;
+
+	for (; addr < end; addr += PAGE_SIZE) {
+		int err = __get_user(c, addr);
+		if (err)
+			return err;
+	}
+
+	return __get_user(c, end - 1);
+}
+
+static int igt_mmap_gtt_revoke(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	struct vm_area_struct *area;
+	unsigned long addr;
+	int err;
+
+	obj = i915_gem_object_create_internal(i915, SZ_4M);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	err = create_mmap_offset(obj);
+	if (err)
+		goto out;
+
+	addr = igt_mmap_node(i915, &obj->base.vma_node,
+			     0, PROT_WRITE, MAP_SHARED);
+	if (IS_ERR_VALUE(addr)) {
+		err = addr;
+		goto out;
+	}
+
+	area = find_vma(current->mm, addr);
+	if (!area) {
+		pr_err("Did not create a vm_area_struct for the mmap\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	err = prefault_range(addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+	GEM_BUG_ON(!atomic_read(&obj->bind_count));
+
+	err = check_present(area, addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+	/*
+	 * After unbinding the object from the GGTT, its address may be reused
+	 * for other objects. Ergo we have to revoke the previous mmap PTE
+	 * access as it no longer points to the same object.
+	 */
+	err = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE);
+	if (err) {
+		pr_err("Failed to unbind object!\n");
+		goto out_unmap;
+	}
+	GEM_BUG_ON(atomic_read(&obj->bind_count));
+
+	err = check_absent(area, addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+out_unmap:
+	vm_munmap(addr, obj->base.size);
+out:
+	i915_gem_object_put(obj);
+	return err;
+}
+
 int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
@@ -797,6 +913,7 @@ int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 		SUBTEST(igt_smoke_tiling),
 		SUBTEST(igt_mmap_offset_exhaustion),
 		SUBTEST(igt_mmap_gtt),
+		SUBTEST(igt_mmap_gtt_revoke),
 	};
 
 	return i915_subtests(tests, i915);
-- 
2.24.0

_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[Intel-gfx] [PATCH 4/4] drm/i915/selftests: Verify mmap_gtt revocation on unbinding

[Chris Wilson]

Whenever, we unbind (or change fence registers) on an object, we must
revoke any and all mmap_gtt using the previous bindings. Those user PTEs
point at the GGTT which know points into a new object, the wrong object.
Ergo, those PTEs must be cleared so that any user access provokes a new
page fault.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 .../drm/i915/gem/selftests/i915_gem_mman.c    | 117 ++++++++++++++++++
 1 file changed, 117 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 3c8f2297be86..bd80b19d4e39 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -790,6 +790,122 @@ static int igt_mmap_gtt(void *arg)
 	return err;
 }
 
+static int check_present_pte(pte_t *pte, unsigned long addr, void *data)
+{
+	if (!pte_present(*pte) || pte_none(*pte)) {
+		pr_err("missing PTE:%lx\n",
+		       (addr - (unsigned long)data) >> PAGE_SHIFT);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_absent_pte(pte_t *pte, unsigned long addr, void *data)
+{
+	if (pte_present(*pte) && !pte_none(*pte)) {
+		pr_err("present PTE:%lx; expected to be revoked\n",
+		       (addr - (unsigned long)data) >> PAGE_SHIFT);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_present(struct vm_area_struct *vma,
+			 unsigned long addr, unsigned long len)
+{
+	return apply_to_page_range(vma->vm_mm, addr, len,
+				   check_present_pte, (void *)addr);
+}
+
+static int check_absent(struct vm_area_struct *vma,
+			unsigned long addr, unsigned long len)
+{
+	return apply_to_page_range(vma->vm_mm, addr, len,
+				   check_absent_pte, (void *)addr);
+}
+
+static int prefault_range(u64 start, u64 len)
+{
+	const char __user *addr, *end;
+	char __maybe_unused c;
+
+	addr = u64_to_user_ptr(start);
+	end = addr + len;
+
+	for (; addr < end; addr += PAGE_SIZE) {
+		int err = __get_user(c, addr);
+		if (err)
+			return err;
+	}
+
+	return __get_user(c, end - 1);
+}
+
+static int igt_mmap_gtt_revoke(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	struct vm_area_struct *area;
+	unsigned long addr;
+	int err;
+
+	obj = i915_gem_object_create_internal(i915, SZ_4M);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	err = create_mmap_offset(obj);
+	if (err)
+		goto out;
+
+	addr = igt_mmap_node(i915, &obj->base.vma_node,
+			     0, PROT_WRITE, MAP_SHARED);
+	if (IS_ERR_VALUE(addr)) {
+		err = addr;
+		goto out;
+	}
+
+	area = find_vma(current->mm, addr);
+	if (!area) {
+		pr_err("Did not create a vm_area_struct for the mmap\n");
+		err = -EINVAL;
+		goto out_unmap;
+	}
+
+	err = prefault_range(addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+	GEM_BUG_ON(!atomic_read(&obj->bind_count));
+
+	err = check_present(area, addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+	/*
+	 * After unbinding the object from the GGTT, its address may be reused
+	 * for other objects. Ergo we have to revoke the previous mmap PTE
+	 * access as it no longer points to the same object.
+	 */
+	err = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE);
+	if (err) {
+		pr_err("Failed to unbind object!\n");
+		goto out_unmap;
+	}
+	GEM_BUG_ON(atomic_read(&obj->bind_count));
+
+	err = check_absent(area, addr, obj->base.size);
+	if (err)
+		goto out_unmap;
+
+out_unmap:
+	vm_munmap(addr, obj->base.size);
+out:
+	i915_gem_object_put(obj);
+	return err;
+}
+
 int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 {
 	static const struct i915_subtest tests[] = {
@@ -797,6 +913,7 @@ int i915_gem_mman_live_selftests(struct drm_i915_private *i915)
 		SUBTEST(igt_smoke_tiling),
 		SUBTEST(igt_mmap_offset_exhaustion),
 		SUBTEST(igt_mmap_gtt),
+		SUBTEST(igt_mmap_gtt_revoke),
 	};
 
 	return i915_subtests(tests, i915);
-- 
2.24.0

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✗ Fi.CI.CHECKPATCH: warning for series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Patchwork]

== Series Details ==

Series: series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor
URL   : https://patchwork.freedesktop.org/series/69059/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
d7aa94bb3f9e drm: Expose a method for creating anonymous struct file around drm_minor
755b15511b95 drm/i915/selftests: Replace mock_file hackery with drm's true fake
cca250d8785e drm/i915/selftests: Wrap vm_mmap() around GEM objects
-:41: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'x' - possible side-effects?
#41: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:698:
+#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))

-:91: ERROR:SPACING: space required before that '*' (ctx:VxV)
#91: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:748:
+		u32 __user *ux = u64_to_user_ptr((u64)(addr + i * sizeof*(ux)));
 		                                                        ^

-:147: WARNING:FILE_PATH_CHANGES: added, moved or deleted file(s), does MAINTAINERS need updating?
#147: 
new file mode 100644

-:152: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#152: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.c:1:
+/*

-:153: WARNING:SPDX_LICENSE_TAG: Misplaced SPDX-License-Identifier tag - use line 1 instead
#153: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.c:2:
+ * SPDX-License-Identifier: MIT

-:197: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#197: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.h:1:
+/*

-:198: WARNING:SPDX_LICENSE_TAG: Misplaced SPDX-License-Identifier tag - use line 1 instead
#198: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.h:2:
+ * SPDX-License-Identifier: MIT

total: 1 errors, 5 warnings, 1 checks, 180 lines checked
8f28adffccac drm/i915/selftests: Verify mmap_gtt revocation on unbinding
-:69: WARNING:LINE_SPACING: Missing a blank line after declarations
#69: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:839:
+		int err = __get_user(c, addr);
+		if (err)

total: 0 errors, 1 warnings, 0 checks, 129 lines checked

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[Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Patchwork]

== Series Details ==

Series: series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor
URL   : https://patchwork.freedesktop.org/series/69059/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
d7aa94bb3f9e drm: Expose a method for creating anonymous struct file around drm_minor
755b15511b95 drm/i915/selftests: Replace mock_file hackery with drm's true fake
cca250d8785e drm/i915/selftests: Wrap vm_mmap() around GEM objects
-:41: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'x' - possible side-effects?
#41: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:698:
+#define expand32(x) (((x) << 0) | ((x) << 8) | ((x) << 16) | ((x) << 24))

-:91: ERROR:SPACING: space required before that '*' (ctx:VxV)
#91: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:748:
+		u32 __user *ux = u64_to_user_ptr((u64)(addr + i * sizeof*(ux)));
 		                                                        ^

-:147: WARNING:FILE_PATH_CHANGES: added, moved or deleted file(s), does MAINTAINERS need updating?
#147: 
new file mode 100644

-:152: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#152: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.c:1:
+/*

-:153: WARNING:SPDX_LICENSE_TAG: Misplaced SPDX-License-Identifier tag - use line 1 instead
#153: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.c:2:
+ * SPDX-License-Identifier: MIT

-:197: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#197: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.h:1:
+/*

-:198: WARNING:SPDX_LICENSE_TAG: Misplaced SPDX-License-Identifier tag - use line 1 instead
#198: FILE: drivers/gpu/drm/i915/selftests/igt_mmap.h:2:
+ * SPDX-License-Identifier: MIT

total: 1 errors, 5 warnings, 1 checks, 180 lines checked
8f28adffccac drm/i915/selftests: Verify mmap_gtt revocation on unbinding
-:69: WARNING:LINE_SPACING: Missing a blank line after declarations
#69: FILE: drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c:839:
+		int err = __get_user(c, addr);
+		if (err)

total: 0 errors, 1 warnings, 0 checks, 129 lines checked

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✗ Fi.CI.BAT: failure for series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Patchwork]

== Series Details ==

Series: series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor
URL   : https://patchwork.freedesktop.org/series/69059/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_7270 -> Patchwork_15151
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with Patchwork_15151 absolutely need to be
  verified manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_15151, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/index.html

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in Patchwork_15151:

### IGT changes ###

#### Possible regressions ####

  * igt@i915_selftest@live_mman:
    - fi-skl-lmem:        [PASS][1] -> [INCOMPLETE][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7270/fi-skl-lmem/igt@i915_selftest@live_mman.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/fi-skl-lmem/igt@i915_selftest@live_mman.html

  
Known issues
------------

  Here are the changes found in Patchwork_15151 that come from known issues:

### IGT changes ###

#### Warnings ####

  * igt@kms_chamelium@vga-edid-read:
    - fi-icl-u2:          [SKIP][3] ([fdo#109309]) -> [FAIL][4] ([fdo#109483])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7270/fi-icl-u2/igt@kms_chamelium@vga-edid-read.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/fi-icl-u2/igt@kms_chamelium@vga-edid-read.html

  
  [fdo#109309]: https://bugs.freedesktop.org/show_bug.cgi?id=109309
  [fdo#109483]: https://bugs.freedesktop.org/show_bug.cgi?id=109483


Participating hosts (51 -> 44)
------------------------------

  Missing    (7): fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-ctg-p8600 fi-byt-clapper fi-bdw-samus 


Build changes
-------------

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7270 -> Patchwork_15151

  CI-20190529: 20190529
  CI_DRM_7270: 8d83f3978cb2413ffceb2b8a9c1d507484d7ff08 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5264: f21213012393bd8041ad93084ce29da088ef8426 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_15151: 8f28adffccacbf75d0b191f31a7d6fb1d27ab93b @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

8f28adffccac drm/i915/selftests: Verify mmap_gtt revocation on unbinding
cca250d8785e drm/i915/selftests: Wrap vm_mmap() around GEM objects
755b15511b95 drm/i915/selftests: Replace mock_file hackery with drm's true fake
d7aa94bb3f9e drm: Expose a method for creating anonymous struct file around drm_minor

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/index.html
_______________________________________________
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Intel-gfx@lists.freedesktop.org
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[Intel-gfx] ✗ Fi.CI.BAT: failure for series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor

[Patchwork]

== Series Details ==

Series: series starting with [1/4] drm: Expose a method for creating anonymous struct file around drm_minor
URL   : https://patchwork.freedesktop.org/series/69059/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_7270 -> Patchwork_15151
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with Patchwork_15151 absolutely need to be
  verified manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_15151, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/index.html

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in Patchwork_15151:

### IGT changes ###

#### Possible regressions ####

  * igt@i915_selftest@live_mman:
    - fi-skl-lmem:        [PASS][1] -> [INCOMPLETE][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7270/fi-skl-lmem/igt@i915_selftest@live_mman.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/fi-skl-lmem/igt@i915_selftest@live_mman.html

  
Known issues
------------

  Here are the changes found in Patchwork_15151 that come from known issues:

### IGT changes ###

#### Warnings ####

  * igt@kms_chamelium@vga-edid-read:
    - fi-icl-u2:          [SKIP][3] ([fdo#109309]) -> [FAIL][4] ([fdo#109483])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7270/fi-icl-u2/igt@kms_chamelium@vga-edid-read.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/fi-icl-u2/igt@kms_chamelium@vga-edid-read.html

  
  [fdo#109309]: https://bugs.freedesktop.org/show_bug.cgi?id=109309
  [fdo#109483]: https://bugs.freedesktop.org/show_bug.cgi?id=109483


Participating hosts (51 -> 44)
------------------------------

  Missing    (7): fi-ilk-m540 fi-hsw-4200u fi-byt-squawks fi-bsw-cyan fi-ctg-p8600 fi-byt-clapper fi-bdw-samus 


Build changes
-------------

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7270 -> Patchwork_15151

  CI-20190529: 20190529
  CI_DRM_7270: 8d83f3978cb2413ffceb2b8a9c1d507484d7ff08 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5264: f21213012393bd8041ad93084ce29da088ef8426 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_15151: 8f28adffccacbf75d0b191f31a7d6fb1d27ab93b @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

8f28adffccac drm/i915/selftests: Verify mmap_gtt revocation on unbinding
cca250d8785e drm/i915/selftests: Wrap vm_mmap() around GEM objects
755b15511b95 drm/i915/selftests: Replace mock_file hackery with drm's true fake
d7aa94bb3f9e drm: Expose a method for creating anonymous struct file around drm_minor

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15151/index.html
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx