6785e76701
Currently, TSC is set as part of the VM runtime state. Setting TSC at runtime is heavy and additionally can have side effects on the guest, which are not very resilient to variances in the TSC. This patch uses the VM state to determine whether to set TSC or not. Some minor enhancements for getting TSC values as well that considers the VM state. Additionally, while setting the TSC, the partition is suspended to reduce the variance in the TSC value across vCPUs. Signed-off-by: Sunil Muthuswamy <sunilmut@microsoft.com> Message-Id: <SN4PR2101MB08804D23439166E81FF151F7C0EA0@SN4PR2101MB0880.namprd21.prod.outlook.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
68 lines
4.0 KiB
C
68 lines
4.0 KiB
C
#ifndef WHP_DISPATCH_H
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#define WHP_DISPATCH_H
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#include <windows.h>
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#include <WinHvPlatform.h>
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#include <WinHvEmulation.h>
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#define LIST_WINHVPLATFORM_FUNCTIONS(X) \
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X(HRESULT, WHvGetCapability, (WHV_CAPABILITY_CODE CapabilityCode, VOID* CapabilityBuffer, UINT32 CapabilityBufferSizeInBytes, UINT32* WrittenSizeInBytes)) \
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X(HRESULT, WHvCreatePartition, (WHV_PARTITION_HANDLE* Partition)) \
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X(HRESULT, WHvSetupPartition, (WHV_PARTITION_HANDLE Partition)) \
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X(HRESULT, WHvDeletePartition, (WHV_PARTITION_HANDLE Partition)) \
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X(HRESULT, WHvGetPartitionProperty, (WHV_PARTITION_HANDLE Partition, WHV_PARTITION_PROPERTY_CODE PropertyCode, VOID* PropertyBuffer, UINT32 PropertyBufferSizeInBytes, UINT32* WrittenSizeInBytes)) \
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X(HRESULT, WHvSetPartitionProperty, (WHV_PARTITION_HANDLE Partition, WHV_PARTITION_PROPERTY_CODE PropertyCode, const VOID* PropertyBuffer, UINT32 PropertyBufferSizeInBytes)) \
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X(HRESULT, WHvMapGpaRange, (WHV_PARTITION_HANDLE Partition, VOID* SourceAddress, WHV_GUEST_PHYSICAL_ADDRESS GuestAddress, UINT64 SizeInBytes, WHV_MAP_GPA_RANGE_FLAGS Flags)) \
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X(HRESULT, WHvUnmapGpaRange, (WHV_PARTITION_HANDLE Partition, WHV_GUEST_PHYSICAL_ADDRESS GuestAddress, UINT64 SizeInBytes)) \
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X(HRESULT, WHvTranslateGva, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, WHV_GUEST_VIRTUAL_ADDRESS Gva, WHV_TRANSLATE_GVA_FLAGS TranslateFlags, WHV_TRANSLATE_GVA_RESULT* TranslationResult, WHV_GUEST_PHYSICAL_ADDRESS* Gpa)) \
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X(HRESULT, WHvCreateVirtualProcessor, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, UINT32 Flags)) \
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X(HRESULT, WHvDeleteVirtualProcessor, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex)) \
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X(HRESULT, WHvRunVirtualProcessor, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, VOID* ExitContext, UINT32 ExitContextSizeInBytes)) \
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X(HRESULT, WHvCancelRunVirtualProcessor, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, UINT32 Flags)) \
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X(HRESULT, WHvGetVirtualProcessorRegisters, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, const WHV_REGISTER_NAME* RegisterNames, UINT32 RegisterCount, WHV_REGISTER_VALUE* RegisterValues)) \
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X(HRESULT, WHvSetVirtualProcessorRegisters, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, const WHV_REGISTER_NAME* RegisterNames, UINT32 RegisterCount, const WHV_REGISTER_VALUE* RegisterValues)) \
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/*
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* These are supplemental functions that may not be present
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* on all versions and are not critical for basic functionality.
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*/
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#define LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(X) \
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X(HRESULT, WHvSuspendPartitionTime, (WHV_PARTITION_HANDLE Partition)) \
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#define LIST_WINHVEMULATION_FUNCTIONS(X) \
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X(HRESULT, WHvEmulatorCreateEmulator, (const WHV_EMULATOR_CALLBACKS* Callbacks, WHV_EMULATOR_HANDLE* Emulator)) \
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X(HRESULT, WHvEmulatorDestroyEmulator, (WHV_EMULATOR_HANDLE Emulator)) \
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X(HRESULT, WHvEmulatorTryIoEmulation, (WHV_EMULATOR_HANDLE Emulator, VOID* Context, const WHV_VP_EXIT_CONTEXT* VpContext, const WHV_X64_IO_PORT_ACCESS_CONTEXT* IoInstructionContext, WHV_EMULATOR_STATUS* EmulatorReturnStatus)) \
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X(HRESULT, WHvEmulatorTryMmioEmulation, (WHV_EMULATOR_HANDLE Emulator, VOID* Context, const WHV_VP_EXIT_CONTEXT* VpContext, const WHV_MEMORY_ACCESS_CONTEXT* MmioInstructionContext, WHV_EMULATOR_STATUS* EmulatorReturnStatus)) \
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#define WHP_DEFINE_TYPE(return_type, function_name, signature) \
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typedef return_type (WINAPI *function_name ## _t) signature;
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#define WHP_DECLARE_MEMBER(return_type, function_name, signature) \
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function_name ## _t function_name;
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/* Define function typedef */
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LIST_WINHVPLATFORM_FUNCTIONS(WHP_DEFINE_TYPE)
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LIST_WINHVEMULATION_FUNCTIONS(WHP_DEFINE_TYPE)
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LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_DEFINE_TYPE)
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struct WHPDispatch {
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LIST_WINHVPLATFORM_FUNCTIONS(WHP_DECLARE_MEMBER)
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LIST_WINHVEMULATION_FUNCTIONS(WHP_DECLARE_MEMBER)
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LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_DECLARE_MEMBER)
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};
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extern struct WHPDispatch whp_dispatch;
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bool init_whp_dispatch(void);
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typedef enum WHPFunctionList {
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WINHV_PLATFORM_FNS_DEFAULT,
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WINHV_EMULATION_FNS_DEFAULT,
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WINHV_PLATFORM_FNS_SUPPLEMENTAL
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} WHPFunctionList;
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#endif /* WHP_DISPATCH_H */
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