CVSROOT: /cvs
Module name: src
Changes by: patr...@cvs.openbsd.org 2023/07/07 04:23:39
Modified files:
sys/dev/pci : virtio_pci.c
sys/dev/pv : virtio.c virtiovar.h
Log message:
The per-VQ MSI-X interrupt handler needs to sync DMA mappings in the
same way that the shared interrupt handler does. This is one of the
requirements of virtio_dequeue(), as specified in its comment above.
Without the DMA sync, it will not see a new entry on the ring and
return. Since the interrupt is edge-triggered there won't be another
one and we'll get stuck.
ok dv@
