When a VM is marked as an usuable we disallow new submissions from it,
however submissions that where already scheduled on the ring would still
be re-sent.
Since this can lead to further hangs, avoid emitting the actual IBs.
Fixes: 6a4d287a1ae6 ("drm/msm: Mark VM as unusable on GPU hangs")
Signed-off-by: Antonino Maniscalco <antomani103@xxxxxxxxx>
---
drivers/gpu/drm/msm/msm_gpu.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index c317b25a8162edba0d594f61427eac4440871b73..e6cd85c810bd2314c8bba53644a622464713b7f2 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -553,8 +553,15 @@ static void recover_worker(struct kthread_work *work)
unsigned long flags;
spin_lock_irqsave(&ring->submit_lock, flags);
- list_for_each_entry(submit, &ring->submits, node)
+ list_for_each_entry(submit, &ring->submits, node) {
+ /*
+ * If the submit uses an unusable vm make sure
+ * we don't actually run it
+ */
+ if (to_msm_vm(submit->vm)->unusable)
+ submit->nr_cmds = 0;
gpu->funcs->submit(gpu, submit);
+ }
spin_unlock_irqrestore(&ring->submit_lock, flags);
}
}
---
base-commit: 8290d37ad2b087bbcfe65fa5bcaf260e184b250a
change-id: 20250813-unusable_fix_b4-10bde6f3b756
Best regards,
--
Antonino Maniscalco <antomani103@xxxxxxxxx>
