Commit c26e0527 authored by Saurabh Sengar's avatar Saurabh Sengar Committed by Wei Liu
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x86/hyperv: Add VTL specific structs and hypercalls 



Add structs and hypercalls required to enable VTL support on x86.

Signed-off-by: default avatarSaurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: default avatarMichael Kelley <mikelley@microsoft.com>
Reviewed-by: default avatarStanislav Kinsburskii <stanislav.kinsburskii@gmail.com>
Link: https://lore.kernel.org/r/1681192532-15460-3-git-send-email-ssengar@linux.microsoft.com


Signed-off-by: default avatarWei Liu <wei.liu@kernel.org>
parent d21a19e1

arch/x86/include/asm/hyperv-tlfs.h

+75 −0
Original line number Diff line number Diff line
@@ -716,6 +716,81 @@ union hv_msi_entry { 
	} __packed;

};



struct hv_x64_segment_register {

	u64 base;

	u32 limit;

	u16 selector;

	union {

		struct {

			u16 segment_type : 4;

			u16 non_system_segment : 1;

			u16 descriptor_privilege_level : 2;

			u16 present : 1;

			u16 reserved : 4;

			u16 available : 1;

			u16 _long : 1;

			u16 _default : 1;

			u16 granularity : 1;

		} __packed;

		u16 attributes;

	};

} __packed;



struct hv_x64_table_register {

	u16 pad[3];

	u16 limit;

	u64 base;

} __packed;



struct hv_init_vp_context {

	u64 rip;

	u64 rsp;

	u64 rflags;



	struct hv_x64_segment_register cs;

	struct hv_x64_segment_register ds;

	struct hv_x64_segment_register es;

	struct hv_x64_segment_register fs;

	struct hv_x64_segment_register gs;

	struct hv_x64_segment_register ss;

	struct hv_x64_segment_register tr;

	struct hv_x64_segment_register ldtr;



	struct hv_x64_table_register idtr;

	struct hv_x64_table_register gdtr;



	u64 efer;

	u64 cr0;

	u64 cr3;

	u64 cr4;

	u64 msr_cr_pat;

} __packed;



union hv_input_vtl {

	u8 as_uint8;

	struct {

		u8 target_vtl: 4;

		u8 use_target_vtl: 1;

		u8 reserved_z: 3;

	};

} __packed;



struct hv_enable_vp_vtl {

	u64				partition_id;

	u32				vp_index;

	union hv_input_vtl		target_vtl;

	u8				mbz0;

	u16				mbz1;

	struct hv_init_vp_context	vp_context;

} __packed;



struct hv_get_vp_from_apic_id_in {

	u64 partition_id;

	union hv_input_vtl target_vtl;

	u8 res[7];

	u32 apic_ids[];

} __packed;



#include <asm-generic/hyperv-tlfs.h>



#endif

include/asm-generic/hyperv-tlfs.h

+4 −0
Original line number Diff line number Diff line
@@ -146,6 +146,7 @@ union hv_reference_tsc_msr { 
/* Declare the various hypercall operations. */

#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE	0x0002

#define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST	0x0003

#define HVCALL_ENABLE_VP_VTL			0x000f

#define HVCALL_NOTIFY_LONG_SPIN_WAIT		0x0008

#define HVCALL_SEND_IPI				0x000b

#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
@@ -165,6 +166,8 @@ union hv_reference_tsc_msr { 
#define HVCALL_MAP_DEVICE_INTERRUPT		0x007c

#define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d

#define HVCALL_RETARGET_INTERRUPT		0x007e

#define HVCALL_START_VP				0x0099

#define HVCALL_GET_VP_ID_FROM_APIC_ID		0x009a

#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af

#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0

#define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db
@@ -220,6 +223,7 @@ enum HV_GENERIC_SET_FORMAT { 
#define HV_STATUS_INVALID_PORT_ID		17

#define HV_STATUS_INVALID_CONNECTION_ID		18

#define HV_STATUS_INSUFFICIENT_BUFFERS		19

#define HV_STATUS_VTL_ALREADY_ENABLED		134



/*

 * The Hyper-V TimeRefCount register and the TSC