Hi All,
We are porting driver from kernel into user space driver with DPDK for one
of our devices. Polling thread works fine without any issue. However, we want
to switch from polling to interrupt based handler. While we enable interrupt
with VFIO MSIx, we always get below errors after issuing one command:
[ 465.464186] dmar: DRHD: handling fault status reg 2
[ 465.464194] dmar: INTR-REMAP: Request device [[02:00.0] fault index 27
[ 465.464194] INTR-REMAP:[fault reason 34] Present field in the IRTE entry is
clear
Here are steps we follow to enable interrupt:
1. --vfio-intr msix was passed in as parameter for rte_eal_init
2. rte_intr_enable was called during the drive probe stage.
3. rte_intr_callback_register was called after interrupt was enabled
Is there anyone in the forum who worked on the interrupt handler to share with
us about your comments? thanks for your help in advance.
Regards,
James
