Merge tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - Add support for running as the root partition in Hyper-V (Microsoft
   Hypervisor) by exposing /dev/mshv (Nuno and various people)

 - Add support for CPU offlining in Hyper-V (Hamza Mahfooz)

 - Misc fixes and cleanups (Roman Kisel, Tianyu Lan, Wei Liu, Michael
   Kelley, Thorsten Blum)

* tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
  x86/hyperv: fix an indentation issue in mshyperv.h
  x86/hyperv: Add comments about hv_vpset and var size hypercall input args
  Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
  hyperv: Add definitions for root partition driver to hv headers
  x86: hyperv: Add mshv_handler() irq handler and setup function
  Drivers: hv: Introduce per-cpu event ring tail
  Drivers: hv: Export some functions for use by root partition module
  acpi: numa: Export node_to_pxm()
  hyperv: Introduce hv_recommend_using_aeoi()
  arm64/hyperv: Add some missing functions to arm64
  x86/mshyperv: Add support for extended Hyper-V features
  hyperv: Log hypercall status codes as strings
  x86/hyperv: Fix check of return value from snp_set_vmsa()
  x86/hyperv: Add VTL mode callback for restarting the system
  x86/hyperv: Add VTL mode emergency restart callback
  hyperv: Remove unused union and structs
  hyperv: Add CONFIG_MSHV_ROOT to gate root partition support
  hyperv: Change hv_root_partition into a function
  hyperv: Convert hypercall statuses to linux error codes
  drivers/hv: add CPU offlining support
  ...

1 files changed, 91 insertions, 0 deletions

diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h
index f8a39d3e9ce6..42e7876455b5 100644
--- a/include/hyperv/hvhdk_mini.h
+++ b/include/hyperv/hvhdk_mini.h
@@ -36,6 +36,52 @@ enum hv_scheduler_type {
 	HV_SCHEDULER_TYPE_MAX
 };
 
+/* HV_STATS_AREA_TYPE */
+enum hv_stats_area_type {
+	HV_STATS_AREA_SELF = 0,
+	HV_STATS_AREA_PARENT = 1,
+	HV_STATS_AREA_INTERNAL = 2,
+	HV_STATS_AREA_COUNT
+};
+
+enum hv_stats_object_type {
+	HV_STATS_OBJECT_HYPERVISOR		= 0x00000001,
+	HV_STATS_OBJECT_LOGICAL_PROCESSOR	= 0x00000002,
+	HV_STATS_OBJECT_PARTITION		= 0x00010001,
+	HV_STATS_OBJECT_VP			= 0x00010002
+};
+
+union hv_stats_object_identity {
+	/* hv_stats_hypervisor */
+	struct {
+		u8 reserved[15];
+		u8 stats_area_type;
+	} __packed hv;
+
+	/* hv_stats_logical_processor */
+	struct {
+		u32 lp_index;
+		u8 reserved[11];
+		u8 stats_area_type;
+	} __packed lp;
+
+	/* hv_stats_partition */
+	struct {
+		u64 partition_id;
+		u8  reserved[7];
+		u8  stats_area_type;
+	} __packed partition;
+
+	/* hv_stats_vp */
+	struct {
+		u64 partition_id;
+		u32 vp_index;
+		u16 flags;
+		u8  reserved;
+		u8  stats_area_type;
+	} __packed vp;
+};
+
 enum hv_partition_property_code {
 	/* Privilege properties */
 	HV_PARTITION_PROPERTY_PRIVILEGE_FLAGS			= 0x00010000,
@@ -47,19 +93,45 @@ enum hv_partition_property_code {
 
 	/* Compatibility properties */
 	HV_PARTITION_PROPERTY_PROCESSOR_XSAVE_FEATURES		= 0x00060002,
+	HV_PARTITION_PROPERTY_XSAVE_STATES                      = 0x00060007,
 	HV_PARTITION_PROPERTY_MAX_XSAVE_DATA_SIZE		= 0x00060008,
 	HV_PARTITION_PROPERTY_PROCESSOR_CLOCK_FREQUENCY		= 0x00060009,
 };
 
+enum hv_snp_status {
+	HV_SNP_STATUS_NONE = 0,
+	HV_SNP_STATUS_AVAILABLE = 1,
+	HV_SNP_STATUS_INCOMPATIBLE = 2,
+	HV_SNP_STATUS_PSP_UNAVAILABLE = 3,
+	HV_SNP_STATUS_PSP_INIT_FAILED = 4,
+	HV_SNP_STATUS_PSP_BAD_FW_VERSION = 5,
+	HV_SNP_STATUS_BAD_CONFIGURATION = 6,
+	HV_SNP_STATUS_PSP_FW_UPDATE_IN_PROGRESS = 7,
+	HV_SNP_STATUS_PSP_RB_INIT_FAILED = 8,
+	HV_SNP_STATUS_PSP_PLATFORM_STATUS_FAILED = 9,
+	HV_SNP_STATUS_PSP_INIT_LATE_FAILED = 10,
+};
+
 enum hv_system_property {
 	/* Add more values when needed */
 	HV_SYSTEM_PROPERTY_SCHEDULER_TYPE = 15,
+	HV_DYNAMIC_PROCESSOR_FEATURE_PROPERTY = 21,
+};
+
+enum hv_dynamic_processor_feature_property {
+	/* Add more values when needed */
+	HV_X64_DYNAMIC_PROCESSOR_FEATURE_MAX_ENCRYPTED_PARTITIONS = 13,
+	HV_X64_DYNAMIC_PROCESSOR_FEATURE_SNP_STATUS = 16,
 };
 
 struct hv_input_get_system_property {
 	u32 property_id; /* enum hv_system_property */
 	union {
 		u32 as_uint32;
+#if IS_ENABLED(CONFIG_X86)
+		/* enum hv_dynamic_processor_feature_property */
+		u32 hv_processor_feature;
+#endif
 		/* More fields to be filled in when needed */
 	};
 } __packed;
@@ -67,9 +139,28 @@ struct hv_input_get_system_property {
 struct hv_output_get_system_property {
 	union {
 		u32 scheduler_type; /* enum hv_scheduler_type */
+#if IS_ENABLED(CONFIG_X86)
+		u64 hv_processor_feature_value;
+#endif
 	};
 } __packed;
 
+struct hv_input_map_stats_page {
+	u32 type; /* enum hv_stats_object_type */
+	u32 padding;
+	union hv_stats_object_identity identity;
+} __packed;
+
+struct hv_output_map_stats_page {
+	u64 map_location;
+} __packed;
+
+struct hv_input_unmap_stats_page {
+	u32 type; /* enum hv_stats_object_type */
+	u32 padding;
+	union hv_stats_object_identity identity;
+} __packed;
+
 struct hv_proximity_domain_flags {
 	u32 proximity_preferred : 1;
 	u32 reserved : 30;