From 73a00a3927180bc64ff4d547933547d0a2971c35 Mon Sep 17 00:00:00 2001
From: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Date: Tue, 4 Feb 2020 16:23:02 +0000
Subject: drm/i915: Never allow userptr into the new mapping types
Git-commit: f6c26b555e14fb2b35239cb0d66963e996ec100c
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Commit 4f2a572eda67 ("drm/i915/userptr: Never allow userptr into the
mappable GGTT") made I915_GEM_MMAP_GTT IOCTLs to fail when attempted
on a userptr object in order to protect from a lockdep splat. Later
on, new mapping types were introduced by commit cc662126b413
("drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET"). Those new mapping
types suffer from the same lockdep splat issue but they now succeed
when tried on top of a userptr object. Fix it.
v2: Don't play with the -ENODEV driver response (Chris)
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200204162302.1299516-1-chris@chris-wilson.co.uk
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/gem/i915_gem_mman.c | 3 +--
drivers/gpu/drm/i915/gem/i915_gem_object.h | 4 ++--
drivers/gpu/drm/i915/gem/i915_gem_object_types.h | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 2 +-
drivers/gpu/drm/i915/i915_gem.c | 3 ---
5 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index 0b6a442108de..e8cccc131c40 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -613,8 +613,7 @@ __assign_mmap_offset(struct drm_file *file,
if (!obj)
return -ENOENT;
- if (mmap_type == I915_MMAP_TYPE_GTT &&
- i915_gem_object_never_bind_ggtt(obj)) {
+ if (i915_gem_object_never_mmap(obj)) {
err = -ENODEV;
goto out;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 9c86f2dea947..e44a2f40b520 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -194,9 +194,9 @@ i915_gem_object_is_proxy(const struct drm_i915_gem_object *obj)
}
static inline bool
-i915_gem_object_never_bind_ggtt(const struct drm_i915_gem_object *obj)
+i915_gem_object_never_mmap(const struct drm_i915_gem_object *obj)
{
- return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_GGTT);
+ return i915_gem_object_type_has(obj, I915_GEM_OBJECT_NO_MMAP);
}
static inline bool
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
index c2174da35bb0..a0b10bcd8d8a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
@@ -34,7 +34,7 @@ struct drm_i915_gem_object_ops {
#define I915_GEM_OBJECT_HAS_IOMEM BIT(1)
#define I915_GEM_OBJECT_IS_SHRINKABLE BIT(2)
#define I915_GEM_OBJECT_IS_PROXY BIT(3)
-#define I915_GEM_OBJECT_NO_GGTT BIT(4)
+#define I915_GEM_OBJECT_NO_MMAP BIT(4)
#define I915_GEM_OBJECT_ASYNC_CANCEL BIT(5)
/* Interface between the GEM object and its backing storage.
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index a74d4ac6a39f..63ead7a2b64a 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -704,7 +704,7 @@ i915_gem_userptr_dmabuf_export(struct drm_i915_gem_object *obj)
static const struct drm_i915_gem_object_ops i915_gem_userptr_ops = {
.flags = I915_GEM_OBJECT_HAS_STRUCT_PAGE |
I915_GEM_OBJECT_IS_SHRINKABLE |
- I915_GEM_OBJECT_NO_GGTT |
+ I915_GEM_OBJECT_NO_MMAP |
I915_GEM_OBJECT_ASYNC_CANCEL,
.get_pages = i915_gem_userptr_get_pages,
.put_pages = i915_gem_userptr_put_pages,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index a712e60b016a..d92cf966fa3f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -941,9 +941,6 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
struct i915_vma *vma;
int ret;
- if (i915_gem_object_never_bind_ggtt(obj))
- return ERR_PTR(-ENODEV);
-
if (flags & PIN_MAPPABLE &&
(!view || view->type == I915_GGTT_VIEW_NORMAL)) {
/*
--
2.28.0