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author | Jason Ekstrand <jason@jlekstrand.net> | 2021-07-23 12:21:35 -0500 |
---|---|---|
committer | Matthew Auld <matthew.auld@intel.com> | 2021-07-26 16:37:30 +0100 |
commit | f3170ba8c907e9936822ad9e0b2eee8e2281615b (patch) | |
tree | aca73cf33de82a7b6dd8315cdbba9e4d072bf2c3 /drivers/gpu/drm/i915/gem | |
parent | drm/i915/gt: nuke gen6_hw_id (diff) | |
download | linux-dev-f3170ba8c907e9936822ad9e0b2eee8e2281615b.tar.xz linux-dev-f3170ba8c907e9936822ad9e0b2eee8e2281615b.zip |
drm/i915/gem: Check object_can_migrate from object_migrate
We don't roll them together entirely because there are still a couple
cases where we want a separate can_migrate check. For instance, the
display code checks that you can migrate a buffer to LMEM before it
accepts it in fb_create. The dma-buf import code also uses it to do an
early check and return a different error code if someone tries to attach
a LMEM-only dma-buf to another driver.
However, no one actually wants to call object_migrate when can_migrate
has failed. The stated intention is for self-tests but none of those
actually take advantage of this unsafe migration.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210723172142.3273510-2-jason@jlekstrand.net
Diffstat (limited to 'drivers/gpu/drm/i915/gem')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_object.c | 13 | ||||
-rw-r--r-- | drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c | 15 |
2 files changed, 2 insertions, 26 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index 5c21cff33199..d09bd9bdb38a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -584,12 +584,6 @@ bool i915_gem_object_can_migrate(struct drm_i915_gem_object *obj, * completed yet, and to accomplish that, i915_gem_object_wait_migration() * must be called. * - * This function is a bit more permissive than i915_gem_object_can_migrate() - * to allow for migrating objects where the caller knows exactly what is - * happening. For example within selftests. More specifically this - * function allows migrating I915_BO_ALLOC_USER objects to regions - * that are not in the list of allowable regions. - * * Note: the @ww parameter is not used yet, but included to make sure * callers put some effort into obtaining a valid ww ctx if one is * available. @@ -616,11 +610,8 @@ int i915_gem_object_migrate(struct drm_i915_gem_object *obj, if (obj->mm.region == mr) return 0; - if (!i915_gem_object_evictable(obj)) - return -EBUSY; - - if (!obj->ops->migrate) - return -EOPNOTSUPP; + if (!i915_gem_object_can_migrate(obj, id)) + return -EINVAL; return obj->ops->migrate(obj, mr); } diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c index 0b7144d2991c..28a700f08b49 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c @@ -61,11 +61,6 @@ static int igt_create_migrate(struct intel_gt *gt, enum intel_region_id src, if (err) continue; - if (!i915_gem_object_can_migrate(obj, dst)) { - err = -EINVAL; - continue; - } - err = i915_gem_object_migrate(obj, &ww, dst); if (err) continue; @@ -114,11 +109,6 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww, return err; if (i915_gem_object_is_lmem(obj)) { - if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM)) { - pr_err("object can't migrate to smem.\n"); - return -EINVAL; - } - err = i915_gem_object_migrate(obj, ww, INTEL_REGION_SMEM); if (err) { pr_err("Object failed migration to smem\n"); @@ -137,11 +127,6 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww, } } else { - if (!i915_gem_object_can_migrate(obj, INTEL_REGION_LMEM)) { - pr_err("object can't migrate to lmem.\n"); - return -EINVAL; - } - err = i915_gem_object_migrate(obj, ww, INTEL_REGION_LMEM); if (err) { pr_err("Object failed migration to lmem\n"); |