Drivers: hv: Get rid of the unused global signaling state

Now that we have implemented a per-connection signaling mechanism, get rid
of the global signaling state. For hosts that don't support per-connection
signaling handle, we have moved the global state to be a per-channel state.

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>

1 files changed, 0 insertions, 24 deletions

diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 76304a622140..e989c6fd1f8f 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -34,8 +34,6 @@
 struct hv_context hv_context = {
         .synic_initialized      = false,
         .hypercall_page         = NULL,
-        .signal_event_param     = NULL,
-        .signal_event_buffer    = NULL,
 };
 
 /*
@@ -170,24 +168,6 @@ int hv_init(void)
 
         hv_context.hypercall_page = virtaddr;
 
-        /* Setup the global signal event param for the signal event hypercall */
-        hv_context.signal_event_buffer =
-                        kmalloc(sizeof(struct hv_input_signal_event_buffer),
-                                GFP_KERNEL);
-        if (!hv_context.signal_event_buffer)
-                goto cleanup;
-
-        hv_context.signal_event_param =
-                (struct hv_input_signal_event *)
-                        (ALIGN((unsigned long)
-                                  hv_context.signal_event_buffer,
-                                  HV_HYPERCALL_PARAM_ALIGN));
-        hv_context.signal_event_param->connectionid.asu32 = 0;
-        hv_context.signal_event_param->connectionid.u.id =
-                                                VMBUS_EVENT_CONNECTION_ID;
-        hv_context.signal_event_param->flag_number = 0;
-        hv_context.signal_event_param->rsvdz = 0;
-
         return 0;
 
 cleanup:
@@ -215,10 +195,6 @@ void hv_cleanup(void)
         /* Reset our OS id */
         wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);
 
-        kfree(hv_context.signal_event_buffer);
-        hv_context.signal_event_buffer = NULL;
-        hv_context.signal_event_param = NULL;
-
         if (hv_context.hypercall_page) {
                 hypercall_msr.as_uint64 = 0;
                 wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);