"struct nouveau_job_ops" is not modified in these drivers.
Constifying this structure moves some data to a read-only section, so
increase overall security.
In order to do it, "struct nouveau_job" and "struct nouveau_job_args" also
need to be adjusted to this new const qualifier.
On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
5570 152 0 5722 165a drivers/gpu/drm/nouveau/nouveau_exec.o
After:
=====
text data bss dec hex filename
5630 112 0 5742 166e drivers/gpu/drm/nouveau/nouveau_exec.o
Signed-off-by: Christophe JAILLET <[email protected]>
---
drivers/gpu/drm/nouveau/nouveau_exec.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_sched.h | 4 ++--
drivers/gpu/drm/nouveau/nouveau_uvmm.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_exec.c b/drivers/gpu/drm/nouveau/nouveau_exec.c
index e65c0ef23bc7..a0b5f1b16e8b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_exec.c
+++ b/drivers/gpu/drm/nouveau/nouveau_exec.c
@@ -188,7 +188,7 @@ nouveau_exec_job_timeout(struct nouveau_job *job)
return DRM_GPU_SCHED_STAT_NOMINAL;
}
-static struct nouveau_job_ops nouveau_exec_job_ops = {
+static const struct nouveau_job_ops nouveau_exec_job_ops = {
.submit = nouveau_exec_job_submit,
.armed_submit = nouveau_exec_job_armed_submit,
.run = nouveau_exec_job_run,
diff --git a/drivers/gpu/drm/nouveau/nouveau_sched.h b/drivers/gpu/drm/nouveau/nouveau_sched.h
index e1f01a23e6f6..20cd1da8db73 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sched.h
+++ b/drivers/gpu/drm/nouveau/nouveau_sched.h
@@ -42,7 +42,7 @@ struct nouveau_job_args {
u32 count;
} out_sync;
- struct nouveau_job_ops *ops;
+ const struct nouveau_job_ops *ops;
};
struct nouveau_job {
@@ -73,7 +73,7 @@ struct nouveau_job {
u32 count;
} out_sync;
- struct nouveau_job_ops {
+ const struct nouveau_job_ops {
/* If .submit() returns without any error, it is guaranteed that
* armed_submit() is called.
*/
diff --git a/drivers/gpu/drm/nouveau/nouveau_uvmm.c b/drivers/gpu/drm/nouveau/nouveau_uvmm.c
index ee02cd833c5e..9402fa320a7e 100644
--- a/drivers/gpu/drm/nouveau/nouveau_uvmm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_uvmm.c
@@ -1534,7 +1534,7 @@ nouveau_uvmm_bind_job_cleanup(struct nouveau_job *job)
nouveau_uvmm_bind_job_put(bind_job);
}
-static struct nouveau_job_ops nouveau_bind_job_ops = {
+static const struct nouveau_job_ops nouveau_bind_job_ops = {
.submit = nouveau_uvmm_bind_job_submit,
.armed_submit = nouveau_uvmm_bind_job_armed_submit,
.run = nouveau_uvmm_bind_job_run,
--
2.45.2