Future/hypervisor
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This commit is contained in:
momo5502 2022-04-09 11:22:52 +02:00
parent c807dd2167
commit 098ea6c1b8
3 changed files with 29 additions and 17 deletions
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16
CMakeLists.txt
View File

@ -7,6 +7,8 @@ project(secret LANGUAGES C CXX)
##########################################
set(CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING "" FORCE)
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
@ -34,6 +36,20 @@ include(cmake/utils.cmake)
set_new_artifact_directory()
enable_driver_support()
##########################################
set(OPT_DEBUG "/Od /Ob0 /Zi")
set(OPT_RELEASE "/O2 /Ob2 /Zi")
add_link_options(/DEBUG)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${OPT_DEBUG}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${OPT_DEBUG}")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${OPT_RELEASE}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${OPT_RELEASE}")
##########################################
add_subdirectory_and_get_targets("external" EXTERNAL_TARGETS)

28
src/driver/hypervisor.cpp
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@ -546,20 +546,17 @@ ShvUtilConvertGdtEntry(
VmxGdtEntry->access_rights.unusable = !gdt_entry->present;
}
UINT32
ShvUtilAdjustMsr(
_In_ LARGE_INTEGER ControlValue,
_In_ UINT32 DesiredValue
)
uint32_t adjust_msr(const ULARGE_INTEGER control_value, const uint64_t desired_value)
{
//
// VMX feature/capability MSRs encode the "must be 0" bits in the high word
// of their value, and the "must be 1" bits in the low word of their value.
// Adjust any requested capability/feature based on these requirements.
//
DesiredValue &= ControlValue.HighPart;
DesiredValue |= ControlValue.LowPart;
return DesiredValue;
auto result = static_cast<uint32_t>(desired_value);
result &= control_value.HighPart;
result |= control_value.LowPart;
return result;
}
void vmx_handle_invd()
@ -599,7 +596,7 @@ void vmx_handle_cpuid(vmx::guest_context& guest_context)
// Otherwise, issue the CPUID to the logical processor based on the indexes
// on the VP's GPRs.
//
__cpuidex(cpu_info, (INT32)guest_context.vp_regs->Rax, (INT32)guest_context.vp_regs->Rcx);
__cpuidex(cpu_info, static_cast<int32_t>(guest_context.vp_regs->Rax), static_cast<int32_t>(guest_context.vp_regs->Rcx));
//
// Check if this was CPUID 1h, which is the features request.
@ -826,14 +823,13 @@ void ShvVmxSetupVmcsForVp(vmx::state* VpData)
ept_controls.enable_invpcid = 1;
ept_controls.enable_xsaves = 1;
__vmx_vmwrite(VMCS_CTRL_SECONDARY_PROCESSOR_BASED_VM_EXECUTION_CONTROLS,
ShvUtilAdjustMsr(launch_context->msr_data[11], ept_controls.flags));
adjust_msr(launch_context->msr_data[11], ept_controls.flags));
//
// Enable no pin-based options ourselves, but there may be some required by
// the processor. Use ShvUtilAdjustMsr to add those in.
//
__vmx_vmwrite(VMCS_CTRL_PIN_BASED_VM_EXECUTION_CONTROLS,
ShvUtilAdjustMsr(launch_context->msr_data[13], 0));
__vmx_vmwrite(VMCS_CTRL_PIN_BASED_VM_EXECUTION_CONTROLS, adjust_msr(launch_context->msr_data[13], 0));
//
// In order for our choice of supporting RDTSCP and XSAVE/RESTORES above to
@ -845,7 +841,7 @@ void ShvVmxSetupVmcsForVp(vmx::state* VpData)
procbased_ctls_register.use_msr_bitmaps = 1;
__vmx_vmwrite(VMCS_CTRL_PROCESSOR_BASED_VM_EXECUTION_CONTROLS,
ShvUtilAdjustMsr(launch_context->msr_data[14],
adjust_msr(launch_context->msr_data[14],
procbased_ctls_register.flags));
//
@ -854,7 +850,7 @@ void ShvVmxSetupVmcsForVp(vmx::state* VpData)
ia32_vmx_exit_ctls_register exit_ctls_register{};
exit_ctls_register.host_address_space_size = 1;
__vmx_vmwrite(VMCS_CTRL_VMEXIT_CONTROLS,
ShvUtilAdjustMsr(launch_context->msr_data[15],
adjust_msr(launch_context->msr_data[15],
exit_ctls_register.flags));
//
@ -863,7 +859,7 @@ void ShvVmxSetupVmcsForVp(vmx::state* VpData)
ia32_vmx_entry_ctls_register entry_ctls_register{};
entry_ctls_register.ia32e_mode_guest = 1;
__vmx_vmwrite(VMCS_CTRL_VMENTRY_CONTROLS,
ShvUtilAdjustMsr(launch_context->msr_data[16],
adjust_msr(launch_context->msr_data[16],
entry_ctls_register.flags));
//
@ -1025,7 +1021,7 @@ void initialize_msrs(vmx::launch_context& launch_context)
}
}
void launch_hypervisor(vmx::state& vm_state)
[[ noreturn ]] void launch_hypervisor(vmx::state& vm_state)
{
initialize_msrs(vm_state.launch_context);
ShvVmxMtrrInitialize(&vm_state);

2
src/driver/vmx.hpp
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@ -44,7 +44,7 @@ namespace vmx
special_registers special_registers;
CONTEXT context_frame;
uint64_t system_directory_table_base;
LARGE_INTEGER msr_data[17];
ULARGE_INTEGER msr_data[17];
mtrr_range mtrr_data[16];
uint64_t vmx_on_physical_address;
uint64_t vmcs_physical_address;