diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/hv/hv.c | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/hv/hv.c')
| -rw-r--r-- | drivers/hv/hv.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 6341be873..11bca51ef 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -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) @@ -139,7 +140,7 @@ static cycle_t read_hv_clock_tsc(struct clocksource *arg) cycle_t current_tick; struct ms_hyperv_tsc_page *tsc_pg = hv_context.tsc_page; - if (tsc_pg->tsc_sequence != -1) { + if (tsc_pg->tsc_sequence != 0) { /* * Use the tsc page to compute the value. */ @@ -161,7 +162,7 @@ static cycle_t read_hv_clock_tsc(struct clocksource *arg) if (tsc_pg->tsc_sequence == sequence) return current_tick; - if (tsc_pg->tsc_sequence != -1) + if (tsc_pg->tsc_sequence != 0) continue; /* * Fallback using MSR method. @@ -192,9 +193,7 @@ int hv_init(void) { int max_leaf; union hv_x64_msr_hypercall_contents hypercall_msr; - union hv_x64_msr_hypercall_contents tsc_msr; void *virtaddr = NULL; - void *va_tsc = NULL; memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS); memset(hv_context.synic_message_page, 0, @@ -240,6 +239,9 @@ int hv_init(void) #ifdef CONFIG_X86_64 if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) { + union hv_x64_msr_hypercall_contents tsc_msr; + void *va_tsc; + va_tsc = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL); if (!va_tsc) goto cleanup; @@ -315,7 +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; @@ -329,11 +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; } @@ -343,13 +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, |