drivers:hv: Export the API to invoke a hypercall on Hyper-V
This patch exposes the function that hv_vmbus.ko uses to make hypercalls. This is necessary for retargeting an interrupt when it is given a new affinity. Since we are exporting this API, rename the API as it will be visible outside the hv.c file. Signed-off-by: Jake Oshins <jakeo@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
619848bd07
commit
a108393dbf
|
@ -89,9 +89,9 @@ static int query_hypervisor_info(void)
|
|||
}
|
||||
|
||||
/*
|
||||
* do_hypercall- Invoke the specified hypercall
|
||||
* hv_do_hypercall- Invoke the specified hypercall
|
||||
*/
|
||||
static u64 do_hypercall(u64 control, void *input, void *output)
|
||||
u64 hv_do_hypercall(u64 control, void *input, void *output)
|
||||
{
|
||||
u64 input_address = (input) ? virt_to_phys(input) : 0;
|
||||
u64 output_address = (output) ? virt_to_phys(output) : 0;
|
||||
|
@ -132,6 +132,7 @@ static u64 do_hypercall(u64 control, void *input, void *output)
|
|||
return hv_status_lo | ((u64)hv_status_hi << 32);
|
||||
#endif /* !x86_64 */
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(hv_do_hypercall);
|
||||
|
||||
#ifdef CONFIG_X86_64
|
||||
static cycle_t read_hv_clock_tsc(struct clocksource *arg)
|
||||
|
@ -316,7 +317,7 @@ int hv_post_message(union hv_connection_id connection_id,
|
|||
{
|
||||
|
||||
struct hv_input_post_message *aligned_msg;
|
||||
u16 status;
|
||||
u64 status;
|
||||
|
||||
if (payload_size > HV_MESSAGE_PAYLOAD_BYTE_COUNT)
|
||||
return -EMSGSIZE;
|
||||
|
@ -330,11 +331,10 @@ int hv_post_message(union hv_connection_id connection_id,
|
|||
aligned_msg->payload_size = payload_size;
|
||||
memcpy((void *)aligned_msg->payload, payload, payload_size);
|
||||
|
||||
status = do_hypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL)
|
||||
& 0xFFFF;
|
||||
status = hv_do_hypercall(HVCALL_POST_MESSAGE, aligned_msg, NULL);
|
||||
|
||||
put_cpu();
|
||||
return status;
|
||||
return status & 0xFFFF;
|
||||
}
|
||||
|
||||
|
||||
|
@ -344,13 +344,13 @@ int hv_post_message(union hv_connection_id connection_id,
|
|||
*
|
||||
* This involves a hypercall.
|
||||
*/
|
||||
u16 hv_signal_event(void *con_id)
|
||||
int hv_signal_event(void *con_id)
|
||||
{
|
||||
u16 status;
|
||||
u64 status;
|
||||
|
||||
status = (do_hypercall(HVCALL_SIGNAL_EVENT, con_id, NULL) & 0xFFFF);
|
||||
status = hv_do_hypercall(HVCALL_SIGNAL_EVENT, con_id, NULL);
|
||||
|
||||
return status;
|
||||
return status & 0xFFFF;
|
||||
}
|
||||
|
||||
static int hv_ce_set_next_event(unsigned long delta,
|
||||
|
|
|
@ -587,7 +587,7 @@ extern int hv_post_message(union hv_connection_id connection_id,
|
|||
enum hv_message_type message_type,
|
||||
void *payload, size_t payload_size);
|
||||
|
||||
extern u16 hv_signal_event(void *con_id);
|
||||
extern int hv_signal_event(void *con_id);
|
||||
|
||||
extern int hv_synic_alloc(void);
|
||||
|
||||
|
|
|
@ -984,6 +984,7 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj,
|
|||
bool fb_overlap_ok);
|
||||
|
||||
int vmbus_cpu_number_to_vp_number(int cpu_number);
|
||||
u64 hv_do_hypercall(u64 control, void *input, void *output);
|
||||
|
||||
/**
|
||||
* VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device
|
||||
|
|
Loading…
Reference in a new issue