ignore VFIO_IRQ_SET_DATA_NONE (#364)

Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: John Levon <john.levon@nutanix.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/lib/irq.c b/lib/irq.c
index a1d855f..5a7a2a8 100644
--- a/lib/irq.c
+++ b/lib/irq.c
@@ -355,6 +355,16 @@ handle_device_set_irqs(vfu_ctx_t *vfu_ctx, uint32_t size,
     }
 
     switch (irq_set->flags & VFIO_IRQ_SET_DATA_TYPE_MASK) {
+        case VFIO_IRQ_SET_DATA_NONE:
+            /*
+             * FIXME The way it's handled in this case is a hack, it should be
+             * properly fixed, see issue #359 for more details.
+             */
+            vfu_log(vfu_ctx, LOG_NOTICE,
+                    "ignore IRQ DATA_NONE, action=%#x, index=%ld, start=%ld, count=%ld",
+                    irq_set->flags & VFIO_IRQ_SET_ACTION_TYPE_MASK,
+                    irq_set->index, irq_set->start, irq_set->count);
+            return 0;
         case VFIO_IRQ_SET_DATA_EVENTFD:
             data = fds;
             if (nr_fds != irq_set->count) {