diff options
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index f40dd57bbec..8e1a9ec5300 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -34,6 +34,7 @@ #include <linux/completion.h> #include <linux/hyperv.h> #include <asm/hyperv.h> +#include <asm/hypervisor.h> #include "hyperv_vmbus.h" @@ -719,33 +720,11 @@ 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()) + if (x86_hyper != &x86_hyper_ms_hyperv) return -ENODEV; init_completion(&probe_event); |