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[Xen-devel] [PATCH for-next 1/7] x86: import hyperv-tlfs.h from Linux



Taken from Linux commit b2d8b167e15bb5ec2691d1119c025630a247f649.

This is a pristine copy from Linux. It is not used yet and probably
doesn't compile. Changes to make it work will come later.

Signed-off-by: Wei Liu <liuwe@xxxxxxxxxxxxx>
---
 xen/include/asm-x86/guest/hyperv-tlfs.h | 906 ++++++++++++++++++++++++
 1 file changed, 906 insertions(+)
 create mode 100644 xen/include/asm-x86/guest/hyperv-tlfs.h

diff --git a/xen/include/asm-x86/guest/hyperv-tlfs.h 
b/xen/include/asm-x86/guest/hyperv-tlfs.h
new file mode 100644
index 0000000000..7741e211f7
--- /dev/null
+++ b/xen/include/asm-x86/guest/hyperv-tlfs.h
@@ -0,0 +1,906 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * This file contains definitions from Hyper-V Hypervisor Top-Level Functional
+ * Specification (TLFS):
+ * 
https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
+ */
+
+#ifndef _ASM_X86_HYPERV_TLFS_H
+#define _ASM_X86_HYPERV_TLFS_H
+
+#include <linux/types.h>
+#include <asm/page.h>
+
+/*
+ * While not explicitly listed in the TLFS, Hyper-V always runs with a page 
size
+ * of 4096. These definitions are used when communicating with Hyper-V using
+ * guest physical pages and guest physical page addresses, since the guest page
+ * size may not be 4096 on all architectures.
+ */
+#define HV_HYP_PAGE_SHIFT      12
+#define HV_HYP_PAGE_SIZE       BIT(HV_HYP_PAGE_SHIFT)
+#define HV_HYP_PAGE_MASK       (~(HV_HYP_PAGE_SIZE - 1))
+
+/*
+ * The below CPUID leaves are present if VersionAndFeatures.HypervisorPresent
+ * is set by CPUID(HvCpuIdFunctionVersionAndFeatures).
+ */
+#define HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS  0x40000000
+#define HYPERV_CPUID_INTERFACE                 0x40000001
+#define HYPERV_CPUID_VERSION                   0x40000002
+#define HYPERV_CPUID_FEATURES                  0x40000003
+#define HYPERV_CPUID_ENLIGHTMENT_INFO          0x40000004
+#define HYPERV_CPUID_IMPLEMENT_LIMITS          0x40000005
+#define HYPERV_CPUID_NESTED_FEATURES           0x4000000A
+
+#define HYPERV_HYPERVISOR_PRESENT_BIT          0x80000000
+#define HYPERV_CPUID_MIN                       0x40000005
+#define HYPERV_CPUID_MAX                       0x4000ffff
+
+/*
+ * Feature identification. EAX indicates which features are available
+ * to the partition based upon the current partition privileges.
+ * These are HYPERV_CPUID_FEATURES.EAX bits.
+ */
+
+/* VP Runtime (HV_X64_MSR_VP_RUNTIME) available */
+#define HV_X64_MSR_VP_RUNTIME_AVAILABLE                BIT(0)
+/* Partition Reference Counter (HV_X64_MSR_TIME_REF_COUNT) available*/
+#define HV_MSR_TIME_REF_COUNT_AVAILABLE                BIT(1)
+/*
+ * Basic SynIC MSRs (HV_X64_MSR_SCONTROL through HV_X64_MSR_EOM
+ * and HV_X64_MSR_SINT0 through HV_X64_MSR_SINT15) available
+ */
+#define HV_X64_MSR_SYNIC_AVAILABLE             BIT(2)
+/*
+ * Synthetic Timer MSRs (HV_X64_MSR_STIMER0_CONFIG through
+ * HV_X64_MSR_STIMER3_COUNT) available
+ */
+#define HV_MSR_SYNTIMER_AVAILABLE              BIT(3)
+/*
+ * APIC access MSRs (HV_X64_MSR_EOI, HV_X64_MSR_ICR and HV_X64_MSR_TPR)
+ * are available
+ */
+#define HV_X64_MSR_APIC_ACCESS_AVAILABLE       BIT(4)
+/* Hypercall MSRs (HV_X64_MSR_GUEST_OS_ID and HV_X64_MSR_HYPERCALL) available*/
+#define HV_X64_MSR_HYPERCALL_AVAILABLE         BIT(5)
+/* Access virtual processor index MSR (HV_X64_MSR_VP_INDEX) available*/
+#define HV_X64_MSR_VP_INDEX_AVAILABLE          BIT(6)
+/* Virtual system reset MSR (HV_X64_MSR_RESET) is available*/
+#define HV_X64_MSR_RESET_AVAILABLE             BIT(7)
+/*
+ * Access statistics pages MSRs (HV_X64_MSR_STATS_PARTITION_RETAIL_PAGE,
+ * HV_X64_MSR_STATS_PARTITION_INTERNAL_PAGE, HV_X64_MSR_STATS_VP_RETAIL_PAGE,
+ * HV_X64_MSR_STATS_VP_INTERNAL_PAGE) available
+ */
+#define HV_X64_MSR_STAT_PAGES_AVAILABLE                BIT(8)
+/* Partition reference TSC MSR is available */
+#define HV_MSR_REFERENCE_TSC_AVAILABLE         BIT(9)
+/* Partition Guest IDLE MSR is available */
+#define HV_X64_MSR_GUEST_IDLE_AVAILABLE                BIT(10)
+/*
+ * There is a single feature flag that signifies if the partition has access
+ * to MSRs with local APIC and TSC frequencies.
+ */
+#define HV_X64_ACCESS_FREQUENCY_MSRS           BIT(11)
+/* AccessReenlightenmentControls privilege */
+#define HV_X64_ACCESS_REENLIGHTENMENT          BIT(13)
+
+/*
+ * Feature identification: indicates which flags were specified at partition
+ * creation. The format is the same as the partition creation flag structure
+ * defined in section Partition Creation Flags.
+ * These are HYPERV_CPUID_FEATURES.EBX bits.
+ */
+#define HV_X64_CREATE_PARTITIONS               BIT(0)
+#define HV_X64_ACCESS_PARTITION_ID             BIT(1)
+#define HV_X64_ACCESS_MEMORY_POOL              BIT(2)
+#define HV_X64_ADJUST_MESSAGE_BUFFERS          BIT(3)
+#define HV_X64_POST_MESSAGES                   BIT(4)
+#define HV_X64_SIGNAL_EVENTS                   BIT(5)
+#define HV_X64_CREATE_PORT                     BIT(6)
+#define HV_X64_CONNECT_PORT                    BIT(7)
+#define HV_X64_ACCESS_STATS                    BIT(8)
+#define HV_X64_DEBUGGING                       BIT(11)
+#define HV_X64_CPU_POWER_MANAGEMENT            BIT(12)
+
+/*
+ * Feature identification. EDX indicates which miscellaneous features
+ * are available to the partition.
+ * These are HYPERV_CPUID_FEATURES.EDX bits.
+ */
+/* The MWAIT instruction is available (per section MONITOR / MWAIT) */
+#define HV_X64_MWAIT_AVAILABLE                         BIT(0)
+/* Guest debugging support is available */
+#define HV_X64_GUEST_DEBUGGING_AVAILABLE               BIT(1)
+/* Performance Monitor support is available*/
+#define HV_X64_PERF_MONITOR_AVAILABLE                  BIT(2)
+/* Support for physical CPU dynamic partitioning events is available*/
+#define HV_X64_CPU_DYNAMIC_PARTITIONING_AVAILABLE      BIT(3)
+/*
+ * Support for passing hypercall input parameter block via XMM
+ * registers is available
+ */
+#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE          BIT(4)
+/* Support for a virtual guest idle state is available */
+#define HV_X64_GUEST_IDLE_STATE_AVAILABLE              BIT(5)
+/* Frequency MSRs available */
+#define HV_FEATURE_FREQUENCY_MSRS_AVAILABLE            BIT(8)
+/* Crash MSR available */
+#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE           BIT(10)
+/* stimer Direct Mode is available */
+#define HV_STIMER_DIRECT_MODE_AVAILABLE                        BIT(19)
+
+/*
+ * Implementation recommendations. Indicates which behaviors the hypervisor
+ * recommends the OS implement for optimal performance.
+ * These are HYPERV_CPUID_ENLIGHTMENT_INFO.EAX bits.
+ */
+/*
+ * Recommend using hypercall for address space switches rather
+ * than MOV to CR3 instruction
+ */
+#define HV_X64_AS_SWITCH_RECOMMENDED                   BIT(0)
+/* Recommend using hypercall for local TLB flushes rather
+ * than INVLPG or MOV to CR3 instructions */
+#define HV_X64_LOCAL_TLB_FLUSH_RECOMMENDED             BIT(1)
+/*
+ * Recommend using hypercall for remote TLB flushes rather
+ * than inter-processor interrupts
+ */
+#define HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED            BIT(2)
+/*
+ * Recommend using MSRs for accessing APIC registers
+ * EOI, ICR and TPR rather than their memory-mapped counterparts
+ */
+#define HV_X64_APIC_ACCESS_RECOMMENDED                 BIT(3)
+/* Recommend using the hypervisor-provided MSR to initiate a system RESET */
+#define HV_X64_SYSTEM_RESET_RECOMMENDED                        BIT(4)
+/*
+ * Recommend using relaxed timing for this partition. If used,
+ * the VM should disable any watchdog timeouts that rely on the
+ * timely delivery of external interrupts
+ */
+#define HV_X64_RELAXED_TIMING_RECOMMENDED              BIT(5)
+
+/*
+ * Recommend not using Auto End-Of-Interrupt feature
+ */
+#define HV_DEPRECATING_AEOI_RECOMMENDED                        BIT(9)
+
+/*
+ * Recommend using cluster IPI hypercalls.
+ */
+#define HV_X64_CLUSTER_IPI_RECOMMENDED                 BIT(10)
+
+/* Recommend using the newer ExProcessorMasks interface */
+#define HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED          BIT(11)
+
+/* Recommend using enlightened VMCS */
+#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED            BIT(14)
+
+/*
+ * Virtual processor will never share a physical core with another virtual
+ * processor, except for virtual processors that are reported as sibling SMT
+ * threads.
+ */
+#define HV_X64_NO_NONARCH_CORESHARING                  BIT(18)
+
+/* Nested features. These are HYPERV_CPUID_NESTED_FEATURES.EAX bits. */
+#define HV_X64_NESTED_DIRECT_FLUSH                     BIT(17)
+#define HV_X64_NESTED_GUEST_MAPPING_FLUSH              BIT(18)
+#define HV_X64_NESTED_MSR_BITMAP                       BIT(19)
+
+/* Hyper-V specific model specific registers (MSRs) */
+
+/* MSR used to identify the guest OS. */
+#define HV_X64_MSR_GUEST_OS_ID                 0x40000000
+
+/* MSR used to setup pages used to communicate with the hypervisor. */
+#define HV_X64_MSR_HYPERCALL                   0x40000001
+
+/* MSR used to provide vcpu index */
+#define HV_X64_MSR_VP_INDEX                    0x40000002
+
+/* MSR used to reset the guest OS. */
+#define HV_X64_MSR_RESET                       0x40000003
+
+/* MSR used to provide vcpu runtime in 100ns units */
+#define HV_X64_MSR_VP_RUNTIME                  0x40000010
+
+/* MSR used to read the per-partition time reference counter */
+#define HV_X64_MSR_TIME_REF_COUNT              0x40000020
+
+/* A partition's reference time stamp counter (TSC) page */
+#define HV_X64_MSR_REFERENCE_TSC               0x40000021
+
+/* MSR used to retrieve the TSC frequency */
+#define HV_X64_MSR_TSC_FREQUENCY               0x40000022
+
+/* MSR used to retrieve the local APIC timer frequency */
+#define HV_X64_MSR_APIC_FREQUENCY              0x40000023
+
+/* Define the virtual APIC registers */
+#define HV_X64_MSR_EOI                         0x40000070
+#define HV_X64_MSR_ICR                         0x40000071
+#define HV_X64_MSR_TPR                         0x40000072
+#define HV_X64_MSR_VP_ASSIST_PAGE              0x40000073
+
+/* Define synthetic interrupt controller model specific registers. */
+#define HV_X64_MSR_SCONTROL                    0x40000080
+#define HV_X64_MSR_SVERSION                    0x40000081
+#define HV_X64_MSR_SIEFP                       0x40000082
+#define HV_X64_MSR_SIMP                                0x40000083
+#define HV_X64_MSR_EOM                         0x40000084
+#define HV_X64_MSR_SINT0                       0x40000090
+#define HV_X64_MSR_SINT1                       0x40000091
+#define HV_X64_MSR_SINT2                       0x40000092
+#define HV_X64_MSR_SINT3                       0x40000093
+#define HV_X64_MSR_SINT4                       0x40000094
+#define HV_X64_MSR_SINT5                       0x40000095
+#define HV_X64_MSR_SINT6                       0x40000096
+#define HV_X64_MSR_SINT7                       0x40000097
+#define HV_X64_MSR_SINT8                       0x40000098
+#define HV_X64_MSR_SINT9                       0x40000099
+#define HV_X64_MSR_SINT10                      0x4000009A
+#define HV_X64_MSR_SINT11                      0x4000009B
+#define HV_X64_MSR_SINT12                      0x4000009C
+#define HV_X64_MSR_SINT13                      0x4000009D
+#define HV_X64_MSR_SINT14                      0x4000009E
+#define HV_X64_MSR_SINT15                      0x4000009F
+
+/*
+ * Synthetic Timer MSRs. Four timers per vcpu.
+ */
+#define HV_X64_MSR_STIMER0_CONFIG              0x400000B0
+#define HV_X64_MSR_STIMER0_COUNT               0x400000B1
+#define HV_X64_MSR_STIMER1_CONFIG              0x400000B2
+#define HV_X64_MSR_STIMER1_COUNT               0x400000B3
+#define HV_X64_MSR_STIMER2_CONFIG              0x400000B4
+#define HV_X64_MSR_STIMER2_COUNT               0x400000B5
+#define HV_X64_MSR_STIMER3_CONFIG              0x400000B6
+#define HV_X64_MSR_STIMER3_COUNT               0x400000B7
+
+/* Hyper-V guest idle MSR */
+#define HV_X64_MSR_GUEST_IDLE                  0x400000F0
+
+/* Hyper-V guest crash notification MSR's */
+#define HV_X64_MSR_CRASH_P0                    0x40000100
+#define HV_X64_MSR_CRASH_P1                    0x40000101
+#define HV_X64_MSR_CRASH_P2                    0x40000102
+#define HV_X64_MSR_CRASH_P3                    0x40000103
+#define HV_X64_MSR_CRASH_P4                    0x40000104
+#define HV_X64_MSR_CRASH_CTL                   0x40000105
+
+/* TSC emulation after migration */
+#define HV_X64_MSR_REENLIGHTENMENT_CONTROL     0x40000106
+#define HV_X64_MSR_TSC_EMULATION_CONTROL       0x40000107
+#define HV_X64_MSR_TSC_EMULATION_STATUS                0x40000108
+
+/*
+ * Declare the MSR used to setup pages used to communicate with the hypervisor.
+ */
+union hv_x64_msr_hypercall_contents {
+       u64 as_uint64;
+       struct {
+               u64 enable:1;
+               u64 reserved:11;
+               u64 guest_physical_address:52;
+       } __packed;
+};
+
+/*
+ * TSC page layout.
+ */
+struct ms_hyperv_tsc_page {
+       volatile u32 tsc_sequence;
+       u32 reserved1;
+       volatile u64 tsc_scale;
+       volatile s64 tsc_offset;
+       u64 reserved2[509];
+}  __packed;
+
+/*
+ * The guest OS needs to register the guest ID with the hypervisor.
+ * The guest ID is a 64 bit entity and the structure of this ID is
+ * specified in the Hyper-V specification:
+ *
+ * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
+ *
+ * While the current guideline does not specify how Linux guest ID(s)
+ * need to be generated, our plan is to publish the guidelines for
+ * Linux and other guest operating systems that currently are hosted
+ * on Hyper-V. The implementation here conforms to this yet
+ * unpublished guidelines.
+ *
+ *
+ * Bit(s)
+ * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
+ * 62:56 - Os Type; Linux is 0x100
+ * 55:48 - Distro specific identification
+ * 47:16 - Linux kernel version number
+ * 15:0  - Distro specific identification
+ *
+ *
+ */
+
+#define HV_LINUX_VENDOR_ID              0x8100
+
+struct hv_reenlightenment_control {
+       __u64 vector:8;
+       __u64 reserved1:8;
+       __u64 enabled:1;
+       __u64 reserved2:15;
+       __u64 target_vp:32;
+}  __packed;
+
+struct hv_tsc_emulation_control {
+       __u64 enabled:1;
+       __u64 reserved:63;
+} __packed;
+
+struct hv_tsc_emulation_status {
+       __u64 inprogress:1;
+       __u64 reserved:63;
+} __packed;
+
+#define HV_X64_MSR_HYPERCALL_ENABLE            0x00000001
+#define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT        12
+#define HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_MASK \
+               (~((1ull << HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT) - 1))
+
+/*
+ * Crash notification (HV_X64_MSR_CRASH_CTL) flags.
+ */
+#define HV_CRASH_CTL_CRASH_NOTIFY_MSG          BIT_ULL(62)
+#define HV_CRASH_CTL_CRASH_NOTIFY              BIT_ULL(63)
+#define HV_X64_MSR_CRASH_PARAMS                \
+               (1 + (HV_X64_MSR_CRASH_P4 - HV_X64_MSR_CRASH_P0))
+
+#define HV_IPI_LOW_VECTOR      0x10
+#define HV_IPI_HIGH_VECTOR     0xff
+
+/* Declare the various hypercall operations. */
+#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE     0x0002
+#define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST      0x0003
+#define HVCALL_NOTIFY_LONG_SPIN_WAIT           0x0008
+#define HVCALL_SEND_IPI                                0x000b
+#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX  0x0013
+#define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX   0x0014
+#define HVCALL_SEND_IPI_EX                     0x0015
+#define HVCALL_POST_MESSAGE                    0x005c
+#define HVCALL_SIGNAL_EVENT                    0x005d
+#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
+#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
+
+#define HV_X64_MSR_VP_ASSIST_PAGE_ENABLE       0x00000001
+#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT        12
+#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_MASK \
+               (~((1ull << HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT) - 1))
+
+/* Hyper-V Enlightened VMCS version mask in nested features CPUID */
+#define HV_X64_ENLIGHTENED_VMCS_VERSION                0xff
+
+#define HV_X64_MSR_TSC_REFERENCE_ENABLE                0x00000001
+#define HV_X64_MSR_TSC_REFERENCE_ADDRESS_SHIFT 12
+
+#define HV_PROCESSOR_POWER_STATE_C0            0
+#define HV_PROCESSOR_POWER_STATE_C1            1
+#define HV_PROCESSOR_POWER_STATE_C2            2
+#define HV_PROCESSOR_POWER_STATE_C3            3
+
+#define HV_FLUSH_ALL_PROCESSORS                        BIT(0)
+#define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES    BIT(1)
+#define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY      BIT(2)
+#define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT     BIT(3)
+
+enum HV_GENERIC_SET_FORMAT {
+       HV_GENERIC_SET_SPARSE_4K,
+       HV_GENERIC_SET_ALL,
+};
+
+#define HV_HYPERCALL_RESULT_MASK       GENMASK_ULL(15, 0)
+#define HV_HYPERCALL_FAST_BIT          BIT(16)
+#define HV_HYPERCALL_VARHEAD_OFFSET    17
+#define HV_HYPERCALL_REP_COMP_OFFSET   32
+#define HV_HYPERCALL_REP_COMP_MASK     GENMASK_ULL(43, 32)
+#define HV_HYPERCALL_REP_START_OFFSET  48
+#define HV_HYPERCALL_REP_START_MASK    GENMASK_ULL(59, 48)
+
+/* hypercall status code */
+#define HV_STATUS_SUCCESS                      0
+#define HV_STATUS_INVALID_HYPERCALL_CODE       2
+#define HV_STATUS_INVALID_HYPERCALL_INPUT      3
+#define HV_STATUS_INVALID_ALIGNMENT            4
+#define HV_STATUS_INVALID_PARAMETER            5
+#define HV_STATUS_INSUFFICIENT_MEMORY          11
+#define HV_STATUS_INVALID_PORT_ID              17
+#define HV_STATUS_INVALID_CONNECTION_ID                18
+#define HV_STATUS_INSUFFICIENT_BUFFERS         19
+
+/*
+ * The Hyper-V TimeRefCount register and the TSC
+ * page provide a guest VM clock with 100ns tick rate
+ */
+#define HV_CLOCK_HZ (NSEC_PER_SEC/100)
+
+typedef struct _HV_REFERENCE_TSC_PAGE {
+       __u32 tsc_sequence;
+       __u32 res1;
+       __u64 tsc_scale;
+       __s64 tsc_offset;
+}  __packed HV_REFERENCE_TSC_PAGE, *PHV_REFERENCE_TSC_PAGE;
+
+/* Define the number of synthetic interrupt sources. */
+#define HV_SYNIC_SINT_COUNT            (16)
+/* Define the expected SynIC version. */
+#define HV_SYNIC_VERSION_1             (0x1)
+/* Valid SynIC vectors are 16-255. */
+#define HV_SYNIC_FIRST_VALID_VECTOR    (16)
+
+#define HV_SYNIC_CONTROL_ENABLE                (1ULL << 0)
+#define HV_SYNIC_SIMP_ENABLE           (1ULL << 0)
+#define HV_SYNIC_SIEFP_ENABLE          (1ULL << 0)
+#define HV_SYNIC_SINT_MASKED           (1ULL << 16)
+#define HV_SYNIC_SINT_AUTO_EOI         (1ULL << 17)
+#define HV_SYNIC_SINT_VECTOR_MASK      (0xFF)
+
+#define HV_SYNIC_STIMER_COUNT          (4)
+
+/* Define synthetic interrupt controller message constants. */
+#define HV_MESSAGE_SIZE                        (256)
+#define HV_MESSAGE_PAYLOAD_BYTE_COUNT  (240)
+#define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30)
+
+/* Define hypervisor message types. */
+enum hv_message_type {
+       HVMSG_NONE                      = 0x00000000,
+
+       /* Memory access messages. */
+       HVMSG_UNMAPPED_GPA              = 0x80000000,
+       HVMSG_GPA_INTERCEPT             = 0x80000001,
+
+       /* Timer notification messages. */
+       HVMSG_TIMER_EXPIRED                     = 0x80000010,
+
+       /* Error messages. */
+       HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
+       HVMSG_UNRECOVERABLE_EXCEPTION   = 0x80000021,
+       HVMSG_UNSUPPORTED_FEATURE               = 0x80000022,
+
+       /* Trace buffer complete messages. */
+       HVMSG_EVENTLOG_BUFFERCOMPLETE   = 0x80000040,
+
+       /* Platform-specific processor intercept messages. */
+       HVMSG_X64_IOPORT_INTERCEPT              = 0x80010000,
+       HVMSG_X64_MSR_INTERCEPT         = 0x80010001,
+       HVMSG_X64_CPUID_INTERCEPT               = 0x80010002,
+       HVMSG_X64_EXCEPTION_INTERCEPT   = 0x80010003,
+       HVMSG_X64_APIC_EOI                      = 0x80010004,
+       HVMSG_X64_LEGACY_FP_ERROR               = 0x80010005
+};
+
+/* Define synthetic interrupt controller message flags. */
+union hv_message_flags {
+       __u8 asu8;
+       struct {
+               __u8 msg_pending:1;
+               __u8 reserved:7;
+       } __packed;
+};
+
+/* Define port identifier type. */
+union hv_port_id {
+       __u32 asu32;
+       struct {
+               __u32 id:24;
+               __u32 reserved:8;
+       } __packed u;
+};
+
+/* Define synthetic interrupt controller message header. */
+struct hv_message_header {
+       __u32 message_type;
+       __u8 payload_size;
+       union hv_message_flags message_flags;
+       __u8 reserved[2];
+       union {
+               __u64 sender;
+               union hv_port_id port;
+       };
+} __packed;
+
+/* Define synthetic interrupt controller message format. */
+struct hv_message {
+       struct hv_message_header header;
+       union {
+               __u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
+       } u;
+} __packed;
+
+/* Define the synthetic interrupt message page layout. */
+struct hv_message_page {
+       struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
+} __packed;
+
+/* Define timer message payload structure. */
+struct hv_timer_message_payload {
+       __u32 timer_index;
+       __u32 reserved;
+       __u64 expiration_time;  /* When the timer expired */
+       __u64 delivery_time;    /* When the message was delivered */
+} __packed;
+
+struct hv_nested_enlightenments_control {
+       struct {
+               __u32 directhypercall:1;
+               __u32 reserved:31;
+       } features;
+       struct {
+               __u32 reserved;
+       } hypercallControls;
+} __packed;
+
+/* Define virtual processor assist page structure. */
+struct hv_vp_assist_page {
+       __u32 apic_assist;
+       __u32 reserved1;
+       __u64 vtl_control[3];
+       struct hv_nested_enlightenments_control nested_control;
+       __u8 enlighten_vmentry;
+       __u8 reserved2[7];
+       __u64 current_nested_vmcs;
+} __packed;
+
+struct hv_enlightened_vmcs {
+       u32 revision_id;
+       u32 abort;
+
+       u16 host_es_selector;
+       u16 host_cs_selector;
+       u16 host_ss_selector;
+       u16 host_ds_selector;
+       u16 host_fs_selector;
+       u16 host_gs_selector;
+       u16 host_tr_selector;
+
+       u16 padding16_1;
+
+       u64 host_ia32_pat;
+       u64 host_ia32_efer;
+
+       u64 host_cr0;
+       u64 host_cr3;
+       u64 host_cr4;
+
+       u64 host_ia32_sysenter_esp;
+       u64 host_ia32_sysenter_eip;
+       u64 host_rip;
+       u32 host_ia32_sysenter_cs;
+
+       u32 pin_based_vm_exec_control;
+       u32 vm_exit_controls;
+       u32 secondary_vm_exec_control;
+
+       u64 io_bitmap_a;
+       u64 io_bitmap_b;
+       u64 msr_bitmap;
+
+       u16 guest_es_selector;
+       u16 guest_cs_selector;
+       u16 guest_ss_selector;
+       u16 guest_ds_selector;
+       u16 guest_fs_selector;
+       u16 guest_gs_selector;
+       u16 guest_ldtr_selector;
+       u16 guest_tr_selector;
+
+       u32 guest_es_limit;
+       u32 guest_cs_limit;
+       u32 guest_ss_limit;
+       u32 guest_ds_limit;
+       u32 guest_fs_limit;
+       u32 guest_gs_limit;
+       u32 guest_ldtr_limit;
+       u32 guest_tr_limit;
+       u32 guest_gdtr_limit;
+       u32 guest_idtr_limit;
+
+       u32 guest_es_ar_bytes;
+       u32 guest_cs_ar_bytes;
+       u32 guest_ss_ar_bytes;
+       u32 guest_ds_ar_bytes;
+       u32 guest_fs_ar_bytes;
+       u32 guest_gs_ar_bytes;
+       u32 guest_ldtr_ar_bytes;
+       u32 guest_tr_ar_bytes;
+
+       u64 guest_es_base;
+       u64 guest_cs_base;
+       u64 guest_ss_base;
+       u64 guest_ds_base;
+       u64 guest_fs_base;
+       u64 guest_gs_base;
+       u64 guest_ldtr_base;
+       u64 guest_tr_base;
+       u64 guest_gdtr_base;
+       u64 guest_idtr_base;
+
+       u64 padding64_1[3];
+
+       u64 vm_exit_msr_store_addr;
+       u64 vm_exit_msr_load_addr;
+       u64 vm_entry_msr_load_addr;
+
+       u64 cr3_target_value0;
+       u64 cr3_target_value1;
+       u64 cr3_target_value2;
+       u64 cr3_target_value3;
+
+       u32 page_fault_error_code_mask;
+       u32 page_fault_error_code_match;
+
+       u32 cr3_target_count;
+       u32 vm_exit_msr_store_count;
+       u32 vm_exit_msr_load_count;
+       u32 vm_entry_msr_load_count;
+
+       u64 tsc_offset;
+       u64 virtual_apic_page_addr;
+       u64 vmcs_link_pointer;
+
+       u64 guest_ia32_debugctl;
+       u64 guest_ia32_pat;
+       u64 guest_ia32_efer;
+
+       u64 guest_pdptr0;
+       u64 guest_pdptr1;
+       u64 guest_pdptr2;
+       u64 guest_pdptr3;
+
+       u64 guest_pending_dbg_exceptions;
+       u64 guest_sysenter_esp;
+       u64 guest_sysenter_eip;
+
+       u32 guest_activity_state;
+       u32 guest_sysenter_cs;
+
+       u64 cr0_guest_host_mask;
+       u64 cr4_guest_host_mask;
+       u64 cr0_read_shadow;
+       u64 cr4_read_shadow;
+       u64 guest_cr0;
+       u64 guest_cr3;
+       u64 guest_cr4;
+       u64 guest_dr7;
+
+       u64 host_fs_base;
+       u64 host_gs_base;
+       u64 host_tr_base;
+       u64 host_gdtr_base;
+       u64 host_idtr_base;
+       u64 host_rsp;
+
+       u64 ept_pointer;
+
+       u16 virtual_processor_id;
+       u16 padding16_2[3];
+
+       u64 padding64_2[5];
+       u64 guest_physical_address;
+
+       u32 vm_instruction_error;
+       u32 vm_exit_reason;
+       u32 vm_exit_intr_info;
+       u32 vm_exit_intr_error_code;
+       u32 idt_vectoring_info_field;
+       u32 idt_vectoring_error_code;
+       u32 vm_exit_instruction_len;
+       u32 vmx_instruction_info;
+
+       u64 exit_qualification;
+       u64 exit_io_instruction_ecx;
+       u64 exit_io_instruction_esi;
+       u64 exit_io_instruction_edi;
+       u64 exit_io_instruction_eip;
+
+       u64 guest_linear_address;
+       u64 guest_rsp;
+       u64 guest_rflags;
+
+       u32 guest_interruptibility_info;
+       u32 cpu_based_vm_exec_control;
+       u32 exception_bitmap;
+       u32 vm_entry_controls;
+       u32 vm_entry_intr_info_field;
+       u32 vm_entry_exception_error_code;
+       u32 vm_entry_instruction_len;
+       u32 tpr_threshold;
+
+       u64 guest_rip;
+
+       u32 hv_clean_fields;
+       u32 hv_padding_32;
+       u32 hv_synthetic_controls;
+       struct {
+               u32 nested_flush_hypercall:1;
+               u32 msr_bitmap:1;
+               u32 reserved:30;
+       }  __packed hv_enlightenments_control;
+       u32 hv_vp_id;
+
+       u64 hv_vm_id;
+       u64 partition_assist_page;
+       u64 padding64_4[4];
+       u64 guest_bndcfgs;
+       u64 padding64_5[7];
+       u64 xss_exit_bitmap;
+       u64 padding64_6[7];
+} __packed;
+
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE                    0
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP               BIT(0)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP              BIT(1)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2            BIT(2)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1            BIT(3)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC            BIT(4)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT           BIT(5)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY           BIT(6)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EXCPN           BIT(7)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR                    BIT(8)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT            BIT(9)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC             BIT(10)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1              BIT(11)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2              BIT(12)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER            BIT(13)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1               BIT(14)
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_ENLIGHTENMENTSCONTROL   BIT(15)
+
+#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL                     0xFFFF
+
+/* Define synthetic interrupt controller flag constants. */
+#define HV_EVENT_FLAGS_COUNT           (256 * 8)
+#define HV_EVENT_FLAGS_LONG_COUNT      (256 / sizeof(unsigned long))
+
+/*
+ * Synthetic timer configuration.
+ */
+union hv_stimer_config {
+       u64 as_uint64;
+       struct {
+               u64 enable:1;
+               u64 periodic:1;
+               u64 lazy:1;
+               u64 auto_enable:1;
+               u64 apic_vector:8;
+               u64 direct_mode:1;
+               u64 reserved_z0:3;
+               u64 sintx:4;
+               u64 reserved_z1:44;
+       } __packed;
+};
+
+
+/* Define the synthetic interrupt controller event flags format. */
+union hv_synic_event_flags {
+       unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
+};
+
+/* Define SynIC control register. */
+union hv_synic_scontrol {
+       u64 as_uint64;
+       struct {
+               u64 enable:1;
+               u64 reserved:63;
+       } __packed;
+};
+
+/* Define synthetic interrupt source. */
+union hv_synic_sint {
+       u64 as_uint64;
+       struct {
+               u64 vector:8;
+               u64 reserved1:8;
+               u64 masked:1;
+               u64 auto_eoi:1;
+               u64 reserved2:46;
+       } __packed;
+};
+
+/* Define the format of the SIMP register */
+union hv_synic_simp {
+       u64 as_uint64;
+       struct {
+               u64 simp_enabled:1;
+               u64 preserved:11;
+               u64 base_simp_gpa:52;
+       } __packed;
+};
+
+/* Define the format of the SIEFP register */
+union hv_synic_siefp {
+       u64 as_uint64;
+       struct {
+               u64 siefp_enabled:1;
+               u64 preserved:11;
+               u64 base_siefp_gpa:52;
+       } __packed;
+};
+
+struct hv_vpset {
+       u64 format;
+       u64 valid_bank_mask;
+       u64 bank_contents[];
+} __packed;
+
+/* HvCallSendSyntheticClusterIpi hypercall */
+struct hv_send_ipi {
+       u32 vector;
+       u32 reserved;
+       u64 cpu_mask;
+} __packed;
+
+/* HvCallSendSyntheticClusterIpiEx hypercall */
+struct hv_send_ipi_ex {
+       u32 vector;
+       u32 reserved;
+       struct hv_vpset vp_set;
+} __packed;
+
+/* HvFlushGuestPhysicalAddressSpace hypercalls */
+struct hv_guest_mapping_flush {
+       u64 address_space;
+       u64 flags;
+} __packed;
+
+/*
+ *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
+ *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
+ */
+#define HV_MAX_FLUSH_PAGES (2048)
+
+/* HvFlushGuestPhysicalAddressList hypercall */
+union hv_gpa_page_range {
+       u64 address_space;
+       struct {
+               u64 additional_pages:11;
+               u64 largepage:1;
+               u64 basepfn:52;
+       } page;
+};
+
+/*
+ * All input flush parameters should be in single page. The max flush
+ * count is equal with how many entries of union hv_gpa_page_range can
+ * be populated into the input parameter page.
+ */
+#define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) / \
+                               sizeof(union hv_gpa_page_range))
+
+struct hv_guest_mapping_flush_list {
+       u64 address_space;
+       u64 flags;
+       union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
+};
+
+/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
+struct hv_tlb_flush {
+       u64 address_space;
+       u64 flags;
+       u64 processor_mask;
+       u64 gva_list[];
+} __packed;
+
+/* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
+struct hv_tlb_flush_ex {
+       u64 address_space;
+       u64 flags;
+       struct hv_vpset hv_vp_set;
+       u64 gva_list[];
+} __packed;
+
+struct hv_partition_assist_pg {
+       u32 tlb_lock_count;
+};
+#endif
-- 
2.20.1


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