diff options
| author | K. Y. Srinivasan <kys@microsoft.com> | 2012-12-01 06:46:45 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-17 11:34:37 -0800 |
| commit | b3bf60c7b4665d40b8eae2217b54c4745f49f470 (patch) | |
| tree | 8d07f29611a65b6b4b06ab95365aadcd77fdf399 /drivers/hv/channel_mgmt.c | |
| parent | eafa7072e7cd806dff42b705284ca26189e527a4 (diff) | |
| download | lwn-b3bf60c7b4665d40b8eae2217b54c4745f49f470.tar.gz lwn-b3bf60c7b4665d40b8eae2217b54c4745f49f470.zip | |
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>
Diffstat (limited to 'drivers/hv/channel_mgmt.c')
| -rw-r--r-- | drivers/hv/channel_mgmt.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 7bf59177aaf8..f4d990285d99 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -282,6 +282,26 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr) */ 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; |