Re: [PATCH] fixup! drm/amdkfd: CRIU export dmabuf handles for GTT BOs

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On 2022-03-09 16:20, David Yat Sin wrote:
Signed-off-by: David Yat Sin <david.yatsin@xxxxxxx>

Please add the commit description back. And let's wait for Alex to confirm that the fixup-method is OK. With that fixed, the patch is

Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>


---
  drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 ++++++
  include/uapi/linux/kfd_ioctl.h           | 2 ++
  2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index e1e2362841f8..607f65ab39ac 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1767,7 +1767,10 @@ static int criu_checkpoint_bos(struct kfd_process *p,
  						&bo_bucket->dmabuf_fd);
  				if (ret)
  					goto exit;
+			} else {
+				bo_bucket->dmabuf_fd = KFD_INVALID_FD;
  			}
+
  			if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL)
  				bo_bucket->offset = KFD_MMAP_TYPE_DOORBELL |
  					KFD_MMAP_GPU_ID(pdd->dev->id);
@@ -2219,7 +2222,10 @@ static int criu_restore_bo(struct kfd_process *p,
  					    &bo_bucket->dmabuf_fd);
  		if (ret)
  			return ret;
+	} else {
+		bo_bucket->dmabuf_fd = KFD_INVALID_FD;
  	}
+
  	return 0;
  }
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index eb9ff85f8556..42975e940758 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -196,6 +196,8 @@ struct kfd_ioctl_dbg_wave_control_args {
  	__u32 buf_size_in_bytes;	/*including gpu_id and buf_size */
  };
+#define KFD_INVALID_FD 0xffffffff
+
  /* Matching HSA_EVENTTYPE */
  #define KFD_IOC_EVENT_SIGNAL			0
  #define KFD_IOC_EVENT_NODECHANGE		1



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