diff options
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/hv.c | 25 | ||||
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 25 |
2 files changed, 25 insertions, 25 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 771e24f2981..3648f8f0f36 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -39,28 +39,6 @@ struct hv_context hv_context = { }; /* - * query_hypervisor_presence - * - Query the cpuid for presence of windows hypervisor - */ -static int query_hypervisor_presence(void) -{ - unsigned int eax; - unsigned int ebx; - unsigned int ecx; - unsigned int edx; - unsigned int op; - - eax = 0; - ebx = 0; - ecx = 0; - edx = 0; - op = HVCPUID_VERSION_FEATURES; - cpuid(op, &eax, &ebx, &ecx, &edx); - - return ecx & HV_PRESENT_BIT; -} - -/* * query_hypervisor_info - Get version info of the windows hypervisor */ static int query_hypervisor_info(void) @@ -160,9 +138,6 @@ int hv_init(void) memset(hv_context.synic_message_page, 0, sizeof(void *) * NR_CPUS); - if (!query_hypervisor_presence()) - goto cleanup; - max_leaf = query_hypervisor_info(); /* diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index b76e8b32126..f40dd57bbec 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -719,10 +719,35 @@ static struct acpi_driver vmbus_acpi_driver = { }, }; +/* + * query_hypervisor_presence + * - Query the cpuid for presence of windows hypervisor + */ +static int query_hypervisor_presence(void) +{ + unsigned int eax; + unsigned int ebx; + unsigned int ecx; + unsigned int edx; + unsigned int op; + + eax = 0; + ebx = 0; + ecx = 0; + edx = 0; + op = HVCPUID_VERSION_FEATURES; + cpuid(op, &eax, &ebx, &ecx, &edx); + + return ecx & HV_PRESENT_BIT; +} + static int __init hv_acpi_init(void) { int ret, t; + if (!query_hypervisor_presence()) + return -ENODEV; + init_completion(&probe_event); /* |