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drm/i915/ttm: add unmap_virtual callback

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Ensure we call ttm_bo_unmap_virtual when releasing the pages.
Importantly this should now handle the ttm swapping case, and all other
places that already call into i915_ttm_move_notify().

v2: fix up the selftest

Fixes: cf3e3e86d7 ("drm/i915: Use ttm mmap handling for ttm bo's.")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220106174910.280616-3-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2022-01-06 17:49:09 +00:00
parent f3cb4a2de5
commit 903e038727
4 changed files with 14 additions and 14 deletions
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3
drivers/gpu/drm/i915/gem/i915_gem_mman.c
View file

@ -537,6 +537,9 @@ void i915_gem_object_release_mmap_offset(struct drm_i915_gem_object *obj)
{
struct i915_mmap_offset *mmo, *mn;
if (obj->ops->unmap_virtual)
obj->ops->unmap_virtual(obj);
spin_lock(&obj->mmo.lock);
rbtree_postorder_for_each_entry_safe(mmo, mn,
&obj->mmo.offsets, offset) {

1
drivers/gpu/drm/i915/gem/i915_gem_object_types.h
View file

@ -83,6 +83,7 @@ struct drm_i915_gem_object_ops {
int (*pwrite)(struct drm_i915_gem_object *obj,
const struct drm_i915_gem_pwrite *arg);
u64 (*mmap_offset)(struct drm_i915_gem_object *obj);
void (*unmap_virtual)(struct drm_i915_gem_object *obj);
int (*dmabuf_export)(struct drm_i915_gem_object *obj);

6
drivers/gpu/drm/i915/gem/i915_gem_ttm.c
View file

@ -948,6 +948,11 @@ static u64 i915_ttm_mmap_offset(struct drm_i915_gem_object *obj)
return drm_vma_node_offset_addr(&obj->base.vma_node);
}
static void i915_ttm_unmap_virtual(struct drm_i915_gem_object *obj)
{
ttm_bo_unmap_virtual(i915_gem_to_ttm(obj));
}
static const struct drm_i915_gem_object_ops i915_gem_ttm_obj_ops = {
.name = "i915_gem_object_ttm",
.flags = I915_GEM_OBJECT_IS_SHRINKABLE |
@ -963,6 +968,7 @@ static const struct drm_i915_gem_object_ops i915_gem_ttm_obj_ops = {
.migrate = i915_ttm_migrate,
.mmap_offset = i915_ttm_mmap_offset,
.unmap_virtual = i915_ttm_unmap_virtual,
.mmap_ops = &vm_ops_ttm,
};

18
drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
View file

@ -1369,20 +1369,10 @@ static int __igt_mmap_revoke(struct drm_i915_private *i915,
}
}
if (!obj->ops->mmap_ops) {
err = check_absent(addr, obj->base.size);
if (err) {
pr_err("%s: was not absent\n", obj->mm.region->name);
goto out_unmap;
}
} else {
/* ttm allows access to evicted regions by design */
err = check_present(addr, obj->base.size);
if (err) {
pr_err("%s: was not present\n", obj->mm.region->name);
goto out_unmap;
}
err = check_absent(addr, obj->base.size);
if (err) {
pr_err("%s: was not absent\n", obj->mm.region->name);
goto out_unmap;
}
out_unmap: