[dpdk-stable] [PATCH v2] net/ixgbe: fix VFIO interrupt mapping in VF

Lu, Wenzhuo wenzhuo.lu at intel.com
Wed Oct 11 05:16:20 CEST 2017


> -----Original Message-----
> From: Dai, Wei
> Sent: Thursday, September 28, 2017 10:29 AM
> To: Lu, Wenzhuo <wenzhuo.lu at intel.com>; Ananyev, Konstantin
> <konstantin.ananyev at intel.com>; Liang, Cunming
> <cunming.liang at intel.com>; Ma, Jianwei <jianwei.ma at intel.com>
> Cc: dev at dpdk.org; Dai, Wei <wei.dai at intel.com>; stable at dpdk.org
> Subject: [PATCH v2] net/ixgbe: 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 eth_ixgbevf_dev_init( ).
> In ixgbevf_dev_start(), if previous VFIO interrupt mapping set in
> eth_ixgbevf_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: 77234603fba0 ("net/ixgbe: support VF mailbox interrupt for link
> up/down")
> Cc: stable at dpdk.org
> Signed-off-by: Wei Dai <wei.dai at intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>

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