Future/hypervisor
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Fixes

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momo5502
2022-03-27 17:51:55 +02:00
parent 630b631692
commit c62cc44a53
5 changed files with 55 additions and 51 deletions
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5
src/driver/CMakeLists.txt
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@ -19,4 +19,7 @@ add_custom_command(TARGET driver
COMMENT "Signing using Nvidia certificate"
)
target_link_libraries(driver vcrtl_driver)
target_link_libraries(driver
vcrtl_driver
ia32_doc
)

28
src/driver/hypervisor.cpp
View File

@ -7,9 +7,7 @@
#include "memory.hpp"
#include "thread.hpp"
#define IA32_FEATURE_CONTROL_MSR 0x3A
#define IA32_FEATURE_CONTROL_MSR_LOCK 0x0001
#define IA32_FEATURE_CONTROL_MSR_ENABLE_VMXON_OUTSIDE_SMX 0x0004
#include <ia32.hpp>
namespace
{
@ -17,18 +15,16 @@ namespace
bool is_vmx_supported()
{
int32_t cpuid_data[4] = {0};
__cpuid(cpuid_data, 1);
return cpuid_data[2] & 0x20;
cpuid_eax_01 data{};
__cpuid(reinterpret_cast<int*>(&data), CPUID_VERSION_INFORMATION);
return data.cpuid_feature_information_ecx.virtual_machine_extensions;
}
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;
ia32_feature_control_register feature_control{};
feature_control.flags = __readmsr(IA32_FEATURE_CONTROL);
return feature_control.lock_bit && feature_control.enable_vmx_outside_smx;
}
bool is_virtualization_supported()
@ -38,14 +34,14 @@ namespace
bool is_hypervisor_present()
{
int32_t cpuid_data[4] = {0};
__cpuid(cpuid_data, 1);
if ((cpuid_data[2] & 0x80000000) == 0)
cpuid_eax_01 data{};
__cpuid(reinterpret_cast<int*>(&data), CPUID_VERSION_INFORMATION);
if ((data.cpuid_feature_information_ecx.flags & 0x80000000) == 0)
{
return false;
}
int32_t cpuid_data[4] = {0};
__cpuid(cpuid_data, 0x40000001);
return cpuid_data[0] == 'momo';
}
@ -105,7 +101,7 @@ void hypervisor::enable()
if (!success)
{
this->disable();
throw std::runtime_error("Hypervisor initialization failed");
//throw std::runtime_error("Hypervisor initialization failed");
}
}