drm/i915: Lift has-pinned-pages assert to caller of ____i915_gem_object_get_pages
i915_gem_object_attach_phys() is trying to swap out its shmemfs pages
for a new set of physically contiguous pages, but unfortunately triggers
an assert inside get-pages.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102561
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170906135220.13508-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 72008e4..1545a4e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2479,8 +2479,6 @@ static int ____i915_gem_object_get_pages(struct drm_i915_gem_object *obj)
{
struct sg_table *pages;
- GEM_BUG_ON(i915_gem_object_has_pinned_pages(obj));
-
if (unlikely(obj->mm.madv != I915_MADV_WILLNEED)) {
DRM_DEBUG("Attempting to obtain a purgeable object\n");
return -EFAULT;
@@ -2510,6 +2508,8 @@ int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj)
return err;
if (unlikely(IS_ERR_OR_NULL(obj->mm.pages))) {
+ GEM_BUG_ON(i915_gem_object_has_pinned_pages(obj));
+
err = ____i915_gem_object_get_pages(obj);
if (err)
goto unlock;
@@ -2593,6 +2593,8 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
if (!atomic_inc_not_zero(&obj->mm.pages_pin_count)) {
if (unlikely(IS_ERR_OR_NULL(obj->mm.pages))) {
+ GEM_BUG_ON(i915_gem_object_has_pinned_pages(obj));
+
ret = ____i915_gem_object_get_pages(obj);
if (ret)
goto err_unlock;