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

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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>
This commit is contained in:
K. Y. Srinivasan 2012-12-01 06:46:51 -08:00 • committed by Greg Kroah-Hartman
commit 9acd6442c6
2 changed files with 0 additions and 32 deletions

24
drivers/hv/hv.c
View file

@ -34,8 +34,6 @@
struct hv_context hv_context = { struct hv_context hv_context = {
.synic_initialized = false, .synic_initialized = false,
.hypercall_page = NULL, .hypercall_page = NULL,
.signal_event_param = NULL,
.signal_event_buffer = NULL,
}; };
/* /*
@ -170,24 +168,6 @@ int hv_init(void)
hv_context.hypercall_page = virtaddr; 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; return 0;
cleanup: cleanup:
@ -215,10 +195,6 @@ void hv_cleanup(void)
/* Reset our OS id */ /* Reset our OS id */
wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0); 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) { if (hv_context.hypercall_page) {
hypercall_msr.as_uint64 = 0; hypercall_msr.as_uint64 = 0;
wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);

8
drivers/hv/hyperv_vmbus.h
View file

@ -492,14 +492,6 @@ struct hv_context {
bool synic_initialized; bool synic_initialized;
/*
* This is used as an input param to HvCallSignalEvent hypercall. The
* input param is immutable in our usage and must be dynamic mem (vs
* stack or global). */
struct hv_input_signal_event_buffer *signal_event_buffer;
/* 8-bytes aligned of the buffer above */
struct hv_input_signal_event *signal_event_param;
void *synic_message_page[NR_CPUS]; void *synic_message_page[NR_CPUS];
void *synic_event_page[NR_CPUS]; void *synic_event_page[NR_CPUS];
/* /*