> -----Original Message-----
> From: Dai, Wei
> Sent: Thursday, November 2, 2017 9:11 PM
> To: Wu, Jingjing <[email protected]>; Xing, Beilei
> <[email protected]>;
> Liang, Cunming <[email protected]>
> Cc: [email protected]; Dai, Wei <[email protected]>; [email protected]
> Subject: [PATCH 1/2] net/i40e: fix VFIO interrupt mapping in VF
>
> When a VF port is bound to VFIO-PIC, only miscellaneous interrupt is mapped to
> VFIO vector 0 in i40evf_dev_init( ).
> In ixgbevf_dev_interrupt_handler( ), if previous VFIO interrupt mapping set in
Ixgbevf? Should be i40evf?
> i40evf_dev_init( ) is not cleard, it will fail when calling rte_intr_enable(
> ) tries
> to map Rx queue interrupt to other VFIO vectors. This patch clears the VFIO
> interrupt mappings before setting both miscellaneous and Rx queue interrupt
> mappings again to avoid failure.
>
> Fixes: 4b90a3ff26c5 ("i40evf: support Rx interrupt")
> Cc: [email protected]
>
> Signed-off-by: Wei Dai <[email protected]>
> ---
> drivers/net/i40e/i40e_ethdev_vf.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c
> b/drivers/net/i40e/i40e_ethdev_vf.c
> index 3b76c9e..567b7d0 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -1432,8 +1432,9 @@ i40evf_dev_interrupt_handler(void *param)
> " do nothing");
>
> done:
> - i40evf_enable_irq0(hw);
> + rte_intr_disable(dev->intr_handle);
> rte_intr_enable(dev->intr_handle);
> + i40evf_enable_irq0(hw);
If that reason, you can move the rte_intr_disable to dev_start when deal with
the rxq setting in intr_conf.
> }
>
> static int
> --
> 2.7.5
