[dpdk-dev] [PATCH 1/2] ixgbe: fix vfio ioctl SET_IRQS error

[Liu, Yong]

Tested-by: Yong Liu <yong.liu at intel.com>

> -----Original Message-----
> From: Liang, Cunming
> Sent: Friday, November 13, 2015 10:50 AM
> To: dev at dpdk.org
> Cc: Liu, Yong; Liang, Cunming
> Subject: [PATCH 1/2] ixgbe: fix vfio ioctl SET_IRQS error
> 
> The vector number may change during 'dev_start'. Before enabling a new
> vector mapping,
> it's necessary to disable/unmap the previous setting.
> 
> Fixes: 7ab8500037f6 ("ixgbe: fix VF start with PF stopped")
> 
> Reported-by: Yong Liu <yong.liu at intel.com>
> Signed-off-by: Cunming Liang <cunming.liang at intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c
> b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 19ddb52..c2be264 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -1976,6 +1976,9 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
>  		return -EINVAL;
>  	}
> 
> +	/* disable uio/vfio intr/eventfd mapping */
> +	rte_intr_disable(intr_handle);
> +
>  	/* stop adapter */
>  	hw->adapter_stopped = 0;
>  	ixgbe_stop_adapter(hw);
> --
> 2.4.3