Drivers: hv: Manage signaling state on a per-connection basis
The current code has a global handle for supporting signaling of the host
from guest. Make this a per-channel attribute as on some versions of the
host we can signal on per-channel handle.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 7bf5917..f4d9902 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -282,6 +282,26 @@
*/
newchannel->batched_reading = true;
+ /*
+ * Setup state for signalling the host.
+ */
+ newchannel->sig_event = (struct hv_input_signal_event *)
+ (ALIGN((unsigned long)
+ &newchannel->sig_buf,
+ HV_HYPERCALL_PARAM_ALIGN));
+
+ newchannel->sig_event->connectionid.asu32 = 0;
+ newchannel->sig_event->connectionid.u.id = VMBUS_EVENT_CONNECTION_ID;
+ newchannel->sig_event->flag_number = 0;
+ newchannel->sig_event->rsvdz = 0;
+
+ if (vmbus_proto_version != VERSION_WS2008) {
+ newchannel->is_dedicated_interrupt =
+ (offer->is_dedicated_interrupt != 0);
+ newchannel->sig_event->connectionid.u.id =
+ offer->connection_id;
+ }
+
memcpy(&newchannel->offermsg, offer,
sizeof(struct vmbus_channel_offer_channel));
newchannel->monitor_grp = (u8)offer->monitorid / 32;