Prepare hypervisor

src/driver/hypervisor.cpp

@@ -0,0 +1,54 @@
+#include "std_include.hpp"
+#include "hypervisor.hpp"
+#include "exception.hpp"
+#include "logging.hpp"
+
+#define IA32_FEATURE_CONTROL_MSR 0x3A
+#define IA32_FEATURE_CONTROL_MSR_LOCK 0x0001
+#define IA32_FEATURE_CONTROL_MSR_ENABLE_VMXON_OUTSIDE_SMX 0x0004
+
+namespace
+{
+	bool is_vmx_supported()
+	{
+		int cpuid_data[4] = {0};
+		__cpuid(cpuid_data, 1);
+		return cpuid_data[2] & 0x20;
+	}
+
+	bool is_vmx_available()
+	{
+		const auto feature_control = __readmsr(IA32_FEATURE_CONTROL_MSR);
+		const auto is_locked = (feature_control & IA32_FEATURE_CONTROL_MSR_LOCK) != 0;
+		const auto is_enabled_outside_smx = (feature_control & IA32_FEATURE_CONTROL_MSR_ENABLE_VMXON_OUTSIDE_SMX) != 0;
+
+		return is_locked && is_enabled_outside_smx;
+	}
+
+	bool is_virtualization_supported()
+	{
+		return is_vmx_supported() && is_vmx_available();
+	}
+}
+
+hypervisor::hypervisor()
+{
+	if(!is_virtualization_supported())
+	{
+		throw std::runtime_error("VMX not supported on this machine");
+	}
+
+	debug_log("VMX supported!\n");
+}
+
+hypervisor::~hypervisor()
+{
+}
+
+void hypervisor::on_sleep()
+{
+}
+
+void hypervisor::on_wakeup()
+{
+}