TLFS updates for Virtualization Host and ARM64

virtualization/hyper-v-on-windows/tlfs/datatypes/TOC.yml

@@ -1,56 +1,136 @@
 - name: Overview
   href: overview.md
 - name: HV_CONNECTION_ID
-  href: HV_CONNECTION_ID.md
+  href: hv_connection_id.md
+- name: HV_CONNECTION_INFO
+  href: hv_connection_info.md
+- name: HV_CPUID_RESULT
+  href: hv_cpuid_result.md
 - name: HV_CRASH_CTL_REG_CONTENTS
-  href: HV_CRASH_CTL_REG_CONTENTS.md
+  href: hv_crash_ctl_reg_contents.md
 - name: HV_DEVICE_INTERRUPT_TARGET
-  href: HV_DEVICE_INTERRUPT_TARGET.md
+  href: hv_device_interrupt_target.md
+- name: HV_GET_VP_CPUID_VALUES_FLAGS
+  href: hv_get_vp_cpuid_values_flags.md
+- name: HV_GPA_MAPPING
+  href: hv_gpa_mapping.md
+- name: HV_GPA_PAGE_NUMBER
+  href: hv_gpa_page_number.md
+- name: HV_GVA
+  href: hv_gva.md
+- name: HV_GVA_PAGE_NUMBER
+  href: hv_gva_page_number.md
 - name: HV_INITIAL_VP_CONTEXT
-  href: HV_INITIAL_VP_CONTEXT.md
+  href: hv_initial_vp_context.md
+- name: HV_INPUT_VTL
+  href: hv_input_vtl.md
+- name: HV_INTERCEPT_ACCESS_TYPE_MASK
+  href: hv_intercept_access_type_mask.md
+- name: HV_INTERCEPT_PARAMETERS
+  href: hv_intercept_parameters.md
+- name: HV_INTERCEPT_PARAMETERS_EX
+  href: hv_intercept_parameters_ex.md
+- name: HV_INTERCEPT_TYPE
+  href: hv_intercept_type.md
+- name: HV_INTERRUPT_CONTROL
+  href: hv_interrupt_control.md
 - name: HV_INTERRUPT_ENTRY
-  href: HV_INTERRUPT_ENTRY.md
+  href: hv_interrupt_entry.md
+- name: HV_INTERRUPT_TYPE
+  href: hv_interrupt_type.md
+- name: HV_INTERRUPT_VECTOR
+  href: hv_interrupt_vector.md
+- name: HV_IO_PORT
+  href: hv_io_port.md
+- name: HV_MAP_GPA_FLAGS
+  href: hv_map_gpa_flags.md
 - name: HV_MESSAGE
-  href: HV_MESSAGE.md
+  href: hv_message.md
 - name: HV_MESSAGE_TYPE
-  href: HV_MESSAGE_TYPE.md
+  href: hv_message_type.md
 - name: HV_MSI_ENTRY
-  href: HV_MSI_ENTRY.md
+  href: hv_msi_entry.md
 - name: HV_NESTED_ENLIGHTENMENTS_CONTROL
-  href: HV_NESTED_ENLIGHTENMENTS_CONTROL.md
+  href: hv_nested_enlightenments_control.md
+- name: HV_PARTITION_CREATION_FLAGS
+  href: hv_partition_creation_flags.md
+- name: HV_PARTITION_CREATION_PROPERTIES
+  href: hv_partition_creation_properties.md
+- name: HV_PARTITION_ID
+  href: hv_partition_id.md
+- name: HV_PARTITION_PROCESSOR_FEATURES
+  href: hv_partition_processor_features.md
 - name: HV_PARTITION_PRIVILEGE_MASK
-  href: HV_PARTITION_PRIVILEGE_MASK.md
+  href: hv_partition_privilege_mask.md
+- name: HV_PARTITION_PROPERTY_CODE
+  href: hv_partition_property_code.md
+- name: HV_PORT_ID
+  href: hv_port_id.md
+- name: HV_PORT_INFO
+  href: hv_port_info.md
+- name: HV_PORT_TYPE
+  href: hv_port_type.md
+- name: HV_PROXIMITY_DOMAIN_ID
+  href: hv_proximity_domain_id.md
+- name: HV_PROXIMITY_DOMAIN_INFO
+  href: hv_proximity_domain_info.md
+- name: HV_REGISTER_INTERCEPT_RESULT_PARAMETERS
+  href: hv_register_intercept_result_parameters.md
 - name: HV_REGISTER_NAME
-  href: HV_REGISTER_NAME.md
+  href: hv_register_name.md
 - name: HV_REGISTER_VALUE
-  href: HV_REGISTER_VALUE.md
+  href: hv_register_value.md
+- name: HV_SPA_PAGE_NUMBER
+  href: hv_spa_page_number.md
+- name: HV_STATS_OBJECT_IDENTITY
+  href: hv_stats_object_identity.md
+- name: HV_STATS_OBJECT_TYPE
+  href: hv_stats_object_type.md
+- name: HV_STATUS
+  href: hv_status.md
 - name: HV_SVM_ENLIGHTENED_VMCB_FIELDS
-  href: HV_SVM_ENLIGHTENED_VMCB_FIELDS.md
+  href: hv_svm_enlightened_vmcb_fields.md
 - name: HV_SYNIC_EVENT_FLAGS
-  href: HV_SYNIC_EVENT_FLAGS.md
+  href: hv_synic_event_flags.md
+- name: HV_SYNIC_SINT_INDEX
+  href: hv_synic_sint_index.md
 - name: HV_TIMER_MESSAGE_PAYLOAD
-  href: HV_TIMER_MESSAGE_PAYLOAD.md
+  href: hv_timer_message_payload.md
+- name: HV_TRANSLATE_GVA_CONTROL_FLAGS
+  href: hv_translate_gva_control_flags.md
+- name: HV_TRANSLATE_GVA_RESULT
+  href: hv_translate_gva_result.md
+- name: HV_TRANSLATE_GVA_RESULT_EX
+  href: hv_translate_gva_result_ex.md
+- name: HV_UNMAP_GPA_FLAGS
+  href: hv_unmap_gpa_flags.md
+- name: HV_UNREGISTER_INTERCEPT_RESULT_PARAMETERS
+  href: hv_unregister_intercept_result_parameters.md
 - name: HV_VIRTUALIZATION_FAULT_INFORMATION
-  href: HV_VIRTUALIZATION_FAULT_INFORMATION.md
+  href: hv_virtualization_fault_information.md
 - name: HV_VMX_ENLIGHTENED_VMCS
-  href: HV_VMX_ENLIGHTENED_VMCS.md
+  href: hv_vmx_enlightened_vmcs.md
 - name: HV_VP_ASSIST_PAGE
-  href: HV_VP_ASSIST_PAGE.md
+  href: hv_vp_assist_page.md
+- name: HV_VP_INDEX
+  href: hv_vp_index.md
 - name: HV_VP_SET
-  href: HV_VP_SET.md
+  href: hv_vp_set.md
 - name: HV_VP_VTL_CONTROL
-  href: HV_VP_VTL_CONTROL.md
+  href: hv_vp_vtl_control.md
+- name: HV_VTL
+  href: hv_vtl.md
 - name: HV_X64_FP_CONTROL_STATUS_REGISTER
-  href: HV_X64_FP_CONTROL_STATUS_REGISTER.md
+  href: hv_x64_fp_control_status_register.md
 - name: HV_X64_FP_REGISTER
-  href: HV_X64_FP_REGISTER.md
+  href: hv_x64_fp_register.md
 - name: HV_X64_MSR_NPIEP_CONFIG_CONTENTS
-  href: HV_X64_MSR_NPIEP_CONFIG_CONTENTS.md
+  href: hv_x64_msr_npiep_config_contents.md
 - name: HV_X64_SEGMENT_REGISTER
-  href: HV_X64_SEGMENT_REGISTER.md
+  href: hv_x64_segment_register.md
 - name: HV_X64_TABLE_REGISTER
-  href: HV_X64_TABLE_REGISTER.md
+  href: hv_x64_table_register.md
 - name: HV_X64_XMM_CONTROL_STATUS_REGISTER
-  href: HV_X64_XMM_CONTROL_STATUS_REGISTER.md
+  href: hv_x64_xmm_control_status_register.md
 - name: HV_X64_REGISTER_SEV_GPA_PAGE
-  href: HV_X64_REGISTER_SEV_GPA_PAGE.md
+  href: HV_X64_REGISTER_SEV_GPA_PAGE.md

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_connection_id.md

@@ -6,10 +6,12 @@ author: alexgrest
 ms.author: hvdev
 ms.date: 10/15/2020
 ms.topic: reference
+ms.prod: windows-10-hyperv
 ---
 
 # HV_CONNECTION_ID
 
+## Overview
 Connections are identified by 32-bit IDs. The high 8 bits are reserved and must be zero. All connection IDs are unique within a partition.
 
 ## Syntax

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_connection_info.md

@@ -0,0 +1,81 @@
+---
+title: HV_CONNECTION_INFO
+description: HV_CONNECTION_INFO data type
+keywords: hyper-v
+author: hvdev
+ms.author: hvdev
+ms.date: 08/28/2025
+ms.topic: reference
+ms.prod: windows-10-hyperv
+---
+
+# HV_CONNECTION_INFO
+
+## Overview
+Per-connection type descriptor used when establishing a connection (`HvCallConnectPort`). Only the union member matching `PortType` is interpreted; other members are zero.
+
+## Syntax
+
+```c
+typedef enum
+{
+    HvPortTypeDoorbell  = 4,
+} HV_PORT_TYPE;
+
+typedef struct
+{
+    HV_PORT_TYPE PortType;
+    UINT32 Padding;
+
+    union
+    {
+        struct
+        {
+            HV_GPA GuestPhysicalAddress;
+            UINT64 TriggerValue;
+            UINT64 Flags;
+        } DoorbellConnectionInfo;
+    };
+} HV_CONNECTION_INFO;
+```
+
+### Port Types
+
+| Enum | Value | Meaning | Use Cases |
+|------|-------|---------|-----------|
+| HvPortTypeDoorbell | 4 | Lightweight guest doorbell (write / trigger semantics) | Low latency memory-mapped notifications. |
+
+### Connection Type Details
+
+#### Doorbell Connections (HvPortTypeDoorbell)
+**Purpose**: Memory-mapped notification mechanism with configurable trigger semantics.
+**Configuration**:
+- `GuestPhysicalAddress`: Target memory location for write operations
+- `TriggerValue`: Expected value to trigger the doorbell (when using specific value matching)
+- `Flags`: Controls trigger behavior and access pattern
+
+### Doorbell Flags Configuration
+
+| Flag | Value | Description |
+|------|-------|-------------|
+| HV_DOORBELL_FLAG_TRIGGER_SIZE_ANY | 0x00000000 | Trigger on any write operation regardless of size |
+| HV_DOORBELL_FLAG_TRIGGER_SIZE_BYTE | 0x00000001 | Trigger only on 1-byte writes |
+| HV_DOORBELL_FLAG_TRIGGER_SIZE_WORD | 0x00000002 | Trigger only on 2-byte writes |
+| HV_DOORBELL_FLAG_TRIGGER_SIZE_DWORD | 0x00000003 | Trigger only on 4-byte writes |
+| HV_DOORBELL_FLAG_TRIGGER_SIZE_QWORD | 0x00000004 | Trigger only on 8-byte writes |
+| HV_DOORBELL_FLAG_TRIGGER_ANY_VALUE | 0x80000000 | Trigger on any written value (ignore TriggerValue) |
+
+**Flag Combinations**:
+- **Size-specific + value-specific**: Triggers only when the exact size and value match
+- **Size-specific + HV_DOORBELL_FLAG_TRIGGER_ANY_VALUE**: Triggers on any write of the specified size
+- **HV_DOORBELL_FLAG_TRIGGER_SIZE_ANY + value-specific**: Triggers when any write matches the value
+- **HV_DOORBELL_FLAG_TRIGGER_SIZE_ANY + HV_DOORBELL_FLAG_TRIGGER_ANY_VALUE**: Triggers on any write operation
+
+### Restrictions and Limitations
+* **Doorbell connections**:
+  - Must not cross page boundaries
+  - Target GPA must be valid and accessible
+
+## See Also
+* [HvCallConnectPort](../hypercalls/HvCallConnectPort.md)
+* [HV_PORT_TYPE](hv_port_type.md)

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_cpuid_result.md

@@ -0,0 +1,43 @@
+---
+title: HV_CPUID_RESULT
+description: HV_CPUID_RESULT
+keywords: hyper-v
+author: hvdev
+ms.author: hvdev
+ms.date: 11/07/2025
+ms.topic: reference
+---
+
+# HV_CPUID_RESULT
+
+The HV_CPUID_RESULT data type contains the result of a CPUID instruction execution. This structure holds the register values returned by the CPUID instruction for a specific function and subfunction.
+
+## Syntax
+
+```c
+typedef union {
+    UINT32 AsUINT32[4];
+    struct
+    {
+        UINT32 Eax;
+        UINT32 Ebx;
+        UINT32 Ecx;
+        UINT32 Edx;
+    };
+} HV_CPUID_RESULT;
+```
+
+### Members
+
+- **Eax**: The value returned in the EAX register by the CPUID instruction
+- **Ebx**: The value returned in the EBX register by the CPUID instruction
+- **Ecx**: The value returned in the ECX register by the CPUID instruction
+- **Edx**: The value returned in the EDX register by the CPUID instruction
+
+The CPUID instruction returns processor identification and feature information in these four 32-bit registers. The specific meaning of each register's contents depends on the CPUID function and subfunction that was executed.
+
+## See also
+
+* [HvCallGetVpCpuidValues](../hypercalls/HvCallGetVpCpuidValues.md)
+* [HV_PARTITION_ID](hv_partition_id.md)
+* [HV_VP_INDEX](hv_vp_index.md)

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_crash_ctl_reg_contents.md

@@ -6,6 +6,7 @@ author: alexgrest
 ms.author: hvdev
 ms.date: 10/15/2020
 ms.topic: reference
+ms.prod: windows-10-hyperv
 ---
 
 # HV_CRASH_CTL_REG_CONTENTS
@@ -20,10 +21,11 @@ typedef union
     UINT64 AsUINT64;
     struct
     {
-        UINT64 Reserved : 62;         // Reserved bits
-        UINT64 CrashMessage : 1;      // P3 is the PA of the message
-                                      // P4 is the length in bytes
-        UINT64 CrashNotify : 1;       // Log contents of crash parameter
+        UINT64 Reserved      : 58; // Reserved bits
+        UINT64 PreOSId       : 3;  // Crash occurred in the preOS environment
+        UINT64 NoCrashDump   : 1;  // Crash dump will not be captured
+        UINT64 CrashMessage  : 1;  // P3 is the PA of the message, P4 is the length in bytes
+        UINT64 CrashNotify   : 1;  // Log contents of crash parameter system registers
     };
 } HV_CRASH_CTL_REG_CONTENTS;
  ```

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_device_interrupt_target.md

@@ -6,13 +6,15 @@ author: alexgrest
 ms.author: hvdev
 ms.date: 10/15/2020
 ms.topic: reference
+ms.prod: windows-10-hyperv
 ---
 
 # HV_DEVICE_INTERRUPT_TARGET
 
 ## Syntax
 
  ```c
+
 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST 1
 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET 2
 

virtualization/hyper-v-on-windows/tlfs/datatypes/hv_get_vp_cpuid_values_flags.md

@@ -0,0 +1,42 @@
+---
+title: HV_GET_VP_CPUID_VALUES_FLAGS
+description: HV_GET_VP_CPUID_VALUES_FLAGS data type
+keywords: hyper-v
+author: hvdev
+ms.author: hvdev
+ms.date: 09/08/2025
+ms.topic: reference
+ms.prod: windows-10-hyperv
+---
+
+# HV_GET_VP_CPUID_VALUES_FLAGS
+
+## Overview
+
+Control flags for `HvCallGetVpCpuidValues` hypercall that specify how CPUID values should be retrieved and processed for the target virtual processor.
+
+## Syntax
+
+```c
+typedef union {
+    UINT32 AsUINT32;
+    struct {
+        UINT32 UseVpXfemXss : 1;
+        UINT32 ApplyRegisteredValues : 1;
+        UINT32 Reserved : 30;
+    };
+} HV_GET_VP_CPUID_VALUES_FLAGS;
+```
+
+### Members
+
+| Member | Description |
+|--------|-------------|
+| UseVpXfemXss | If set, use the VP's current XFEM/XSS values when synthesizing CPUID results |
+| ApplyRegisteredValues | If set, apply any registered CPUID value overrides to the results |
+| Reserved | Must be zero |
+
+## See Also
+
+- [HvCallGetVpCpuidValues](../hypercalls/HvCallGetVpCpuidValues.md)
+- [HV_CPUID_RESULT](hv_cpuid_result.md)