[PATCH 4/4] drm/amdgpu: Allow kfd CRIU with no buffer objects

[Felix Kuehling]

On 2025-06-17 15:45, David Francis wrote:
> The kfd CRIU checkpoint ioctl would return an error if trying
> to checkpoint a process with no kfd buffer objects.
>
> This is a normal case and should not be an error.
>
> Signed-off-by: David Francis <David.Francis at amd.com>

This patch is

Reviewed-by: Felix Kuehling <felix.kuehling at amd.com>


> ---
>   drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> index a8cf2d4580cc..9617c696d5b6 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
> @@ -2569,8 +2569,8 @@ static int criu_restore(struct file *filep,
>   	pr_debug("CRIU restore (num_devices:%u num_bos:%u num_objects:%u priv_data_size:%llu)\n",
>   		 args->num_devices, args->num_bos, args->num_objects, args->priv_data_size);
>   
> -	if (!args->bos || !args->devices || !args->priv_data || !args->priv_data_size ||
> -	    !args->num_devices || !args->num_bos)
> +	if ((args->num_bos > 0 && !args->bos) || !args->devices || !args->priv_data ||
> +	    !args->priv_data_size || !args->num_devices)
>   		return -EINVAL;
>   
>   	mutex_lock(&p->mutex);