Commit e0a975ec authored by Mukesh Rathor's avatar Mukesh Rathor Committed by Wei Liu
Browse files

hyperv: Add definitions for hypervisor crash dump support 



Add data structures for hypervisor crash dump support to the hypervisor
host ABI header file. Details of their usages are in subsequent commits.

Signed-off-by: default avatarMukesh Rathor <mrathor@linux.microsoft.com>
Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
parent 56c3feb3

include/hyperv/hvhdk_mini.h

+55 −0
Original line number Diff line number Diff line
@@ -142,6 +142,17 @@ enum hv_system_property { 
	/* Add more values when needed */

	HV_SYSTEM_PROPERTY_SCHEDULER_TYPE = 15,

	HV_DYNAMIC_PROCESSOR_FEATURE_PROPERTY = 21,

	HV_SYSTEM_PROPERTY_CRASHDUMPAREA = 47,

};



#define HV_PFN_RANGE_PGBITS 24  /* HV_SPA_PAGE_RANGE_ADDITIONAL_PAGES_BITS */

union hv_pfn_range {            /* HV_SPA_PAGE_RANGE */

	u64 as_uint64;

	struct {

		/* 39:0: base pfn.  63:40: additional pages */

		u64 base_pfn : 64 - HV_PFN_RANGE_PGBITS;

		u64 add_pfns : HV_PFN_RANGE_PGBITS;

	} __packed;

};



enum hv_dynamic_processor_feature_property {
@@ -168,6 +179,8 @@ struct hv_output_get_system_property { 
#if IS_ENABLED(CONFIG_X86)

		u64 hv_processor_feature_value;

#endif

		union hv_pfn_range hv_cda_info; /* CrashdumpAreaAddress */

		u64 hv_tramp_pa;                /* CrashdumpTrampolineAddress */

	};

} __packed;
@@ -267,6 +280,48 @@ union hv_gpa_page_access_state { 
	u8 as_uint8;

} __packed;



enum hv_crashdump_action {

	HV_CRASHDUMP_NONE = 0,

	HV_CRASHDUMP_SUSPEND_ALL_VPS,

	HV_CRASHDUMP_PREPARE_FOR_STATE_SAVE,

	HV_CRASHDUMP_STATE_SAVED,

	HV_CRASHDUMP_ENTRY,

};



struct hv_partition_event_root_crashdump_input {

	u32 crashdump_action; /* enum hv_crashdump_action */

} __packed;



struct hv_input_disable_hyp_ex {   /* HV_X64_INPUT_DISABLE_HYPERVISOR_EX */

	u64 rip;

	u64 arg;

} __packed;



struct hv_crashdump_area {	   /* HV_CRASHDUMP_AREA */

	u32 version;

	union {

		u32 flags_as_uint32;

		struct {

			u32 cda_valid : 1;

			u32 cda_unused : 31;

		} __packed;

	};

	/* more unused fields */

} __packed;



union hv_partition_event_input {

	struct hv_partition_event_root_crashdump_input crashdump_input;

};



enum hv_partition_event {

	HV_PARTITION_EVENT_ROOT_CRASHDUMP = 2,

};



struct hv_input_notify_partition_event {

	u32 event;      /* enum hv_partition_event */

	union hv_partition_event_input input;

} __packed;



struct hv_lp_startup_status {

	u64 hv_status;

	u64 substatus1;