Apparently this patch was blocking other teams that were pinging us at irc and with 2 rv-b, 2 tested-by and ci success I merged this patch.
However other 2 patches in this series are still pending review so not merged.
On Fri, Jan 29, 2016 at 8:49 AM Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
commit 033908aed5a596f6202c848c6bbc8a40fb1a8490
Author: Dave Gordon <david.s.gordon@xxxxxxxxx>
Date: Thu Dec 10 18:51:23 2015 +0000
drm/i915: mark GEM object pages dirty when mapped & written by the CPU
introduced a check into i915_gem_object_get_dirty_pages() that returned
a NULL pointer when called with a bad object, one that was not backed by
shmemfs. This WARN was too strict as we can work on all struct page
backed objects, and resulted in a WARN + GPF for existing userspace. In
order to differentiate the various types of objects, add a new flags field
to the i915_gem_object_ops struct to describe their capabilities, with
the first flag being whether the object has struct pages.
v2: Drop silly const before an integer in the structure declaration.
Testcase: igt/gem_userptr_blits/relocations
Reported-and-tested-by: Kristian Høgsberg Kristensen <krh@xxxxxxxxxxxxx>
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Dave Gordon <david.s.gordon@xxxxxxxxx>
Cc: Kristian Høgsberg Kristensen <krh@xxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Reviewed-by: Dave Gordon <david.s.gordon@xxxxxxxxx>
Reviewed-by: Kristian Høgsberg Kristensen <krh@xxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 4 ++++
drivers/gpu/drm/i915/i915_gem.c | 3 ++-
drivers/gpu/drm/i915/i915_gem_userptr.c | 3 ++-
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 905e90f25957..a2d2f08b7515 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2000,6 +2000,9 @@ enum hdmi_force_audio {
#define I915_GTT_OFFSET_NONE ((u32)-1)
struct drm_i915_gem_object_ops {
+ unsigned int flags;
+#define I915_GEM_OBJECT_HAS_STRUCT_PAGE 0x1
+
/* Interface between the GEM object and its backing storage.
* get_pages() is called once prior to the use of the associated set
* of pages before to binding them into the GTT, and put_pages() is
@@ -2015,6 +2018,7 @@ struct drm_i915_gem_object_ops {
*/
int (*get_pages)(struct drm_i915_gem_object *);
void (*put_pages)(struct drm_i915_gem_object *);
+
int (*dmabuf_export)(struct drm_i915_gem_object *);
void (*release)(struct drm_i915_gem_object *);
};
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index a928823507c5..e9b19bca1383 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4465,6 +4465,7 @@ void i915_gem_object_init(struct drm_i915_gem_object *obj,
}
static const struct drm_i915_gem_object_ops i915_gem_object_ops = {
+ .flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE,
.get_pages = i915_gem_object_get_pages_gtt,
.put_pages = i915_gem_object_put_pages_gtt,
};
@@ -5309,7 +5310,7 @@ i915_gem_object_get_dirty_page(struct drm_i915_gem_object *obj, int n)
struct page *page;
/* Only default objects have per-page dirty tracking */
- if (WARN_ON(obj->ops != &i915_gem_object_ops))
+ if (WARN_ON((obj->ops->flags & I915_GEM_OBJECT_HAS_STRUCT_PAGE) == 0))
return NULL;
page = i915_gem_object_get_page(obj, n);
diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c
index 74a4d1714879..7107f2fd38f5 100644
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -708,9 +708,10 @@ i915_gem_userptr_dmabuf_export(struct drm_i915_gem_object *obj)
}
static const struct drm_i915_gem_object_ops i915_gem_userptr_ops = {
- .dmabuf_export = i915_gem_userptr_dmabuf_export,
+ .flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE,
.get_pages = i915_gem_userptr_get_pages,
.put_pages = i915_gem_userptr_put_pages,
+ .dmabuf_export = i915_gem_userptr_dmabuf_export,
.release = i915_gem_userptr_release,
};
--
2.7.0
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