arch/riscv/include/asm/kvm_host.h - third_party/linux - Git at Google


            
            /* SPDX-License-Identifier: GPL-2.0-only */

            
            /*

            
             * Copyright (C) 2019 Western Digital Corporation or its affiliates.

            
             *

            
             * Authors:

            
             *     Anup Patel <anup.patel@wdc.com>

            
             */


            #ifndef __RISCV_KVM_HOST_H__

            
            #define __RISCV_KVM_HOST_H__


            #include <linux/types.h>

            
            #include <linux/kvm.h>

            
            #include <linux/kvm_types.h>

            
            #include <linux/spinlock.h>

            
            #include <asm/hwcap.h>

            
            #include <asm/kvm_aia.h>

            
            #include <asm/ptrace.h>

            
            #include <asm/kvm_tlb.h>

            
            #include <asm/kvm_vmid.h>

            
            #include <asm/kvm_vcpu_config.h>

            
            #include <asm/kvm_vcpu_fp.h>

            
            #include <asm/kvm_vcpu_insn.h>

            
            #include <asm/kvm_vcpu_sbi.h>

            
            #include <asm/kvm_vcpu_sbi_fwft.h>

            
            #include <asm/kvm_vcpu_timer.h>

            
            #include <asm/kvm_vcpu_pmu.h>


            #define KVM_MAX_VCPUS			1024


            #define KVM_HALT_POLL_NS_DEFAULT	500000


            #define KVM_VCPU_MAX_FEATURES		0


            #define KVM_IRQCHIP_NUM_PINS		1024


            #define KVM_REQ_SLEEP \

            
            	KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

            
            #define KVM_REQ_VCPU_RESET		KVM_ARCH_REQ(1)

            
            #define KVM_REQ_UPDATE_HGATP		KVM_ARCH_REQ(2)

            
            #define KVM_REQ_FENCE_I			\

            
            	KVM_ARCH_REQ_FLAGS(3, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

            
            #define KVM_REQ_HFENCE_VVMA_ALL		\

            
            	KVM_ARCH_REQ_FLAGS(4, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

            
            #define KVM_REQ_HFENCE			\

            
            	KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)

            
            #define KVM_REQ_STEAL_UPDATE		KVM_ARCH_REQ(6)


            #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE


            #define KVM_HAVE_MMU_RWLOCK


            #define KVM_DIRTY_LOG_MANUAL_CAPS	(KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \

            
            					 KVM_DIRTY_LOG_INITIALLY_SET)


            struct kvm_vm_stat {

            
            	struct kvm_vm_stat_generic generic;

            
            };


            struct kvm_vcpu_stat {

            
            	struct kvm_vcpu_stat_generic generic;

            
            	u64 ecall_exit_stat;

            
            	u64 wfi_exit_stat;

            
            	u64 wrs_exit_stat;

            
            	u64 mmio_exit_user;

            
            	u64 mmio_exit_kernel;

            
            	u64 csr_exit_user;

            
            	u64 csr_exit_kernel;

            
            	u64 signal_exits;

            
            	u64 exits;

            
            	u64 instr_illegal_exits;

            
            	u64 load_misaligned_exits;

            
            	u64 store_misaligned_exits;

            
            	u64 load_access_exits;

            
            	u64 store_access_exits;

            
            };


            struct kvm_arch_memory_slot {

            
            };


            struct kvm_arch {

            
            	/* G-stage vmid */

            
            	struct kvm_vmid vmid;


            	/* G-stage page table */

            
            	pgd_t *pgd;

            
            	phys_addr_t pgd_phys;

            
            	unsigned long pgd_levels;

            
            	struct kvm_mmu_memory_cache pgd_split_page_cache;


            	/* Guest Timer */

            
            	struct kvm_guest_timer timer;


            	/* AIA Guest/VM context */

            
            	struct kvm_aia aia;


            	/* KVM_CAP_RISCV_MP_STATE_RESET */

            
            	bool mp_state_reset;

            
            };


            struct kvm_cpu_trap {

            
            	unsigned long sepc;

            
            	unsigned long scause;

            
            	unsigned long stval;

            
            	unsigned long htval;

            
            	unsigned long htinst;

            
            };


            struct kvm_cpu_context {

            
            	unsigned long zero;

            
            	unsigned long ra;

            
            	unsigned long sp;

            
            	unsigned long gp;

            
            	unsigned long tp;

            
            	unsigned long t0;

            
            	unsigned long t1;

            
            	unsigned long t2;

            
            	unsigned long s0;

            
            	unsigned long s1;

            
            	unsigned long a0;

            
            	unsigned long a1;

            
            	unsigned long a2;

            
            	unsigned long a3;

            
            	unsigned long a4;

            
            	unsigned long a5;

            
            	unsigned long a6;

            
            	unsigned long a7;

            
            	unsigned long s2;

            
            	unsigned long s3;

            
            	unsigned long s4;

            
            	unsigned long s5;

            
            	unsigned long s6;

            
            	unsigned long s7;

            
            	unsigned long s8;

            
            	unsigned long s9;

            
            	unsigned long s10;

            
            	unsigned long s11;

            
            	unsigned long t3;

            
            	unsigned long t4;

            
            	unsigned long t5;

            
            	unsigned long t6;

            
            	unsigned long sepc;

            
            	unsigned long sstatus;

            
            	unsigned long hstatus;

            
            	union __riscv_fp_state fp;

            
            	struct __riscv_v_ext_state vector;

            
            };


            struct kvm_vcpu_csr {

            
            	unsigned long vsstatus;

            
            	unsigned long vsie;

            
            	unsigned long vstvec;

            
            	unsigned long vsscratch;

            
            	unsigned long vsepc;

            
            	unsigned long vscause;

            
            	unsigned long vstval;

            
            	unsigned long hvip;

            
            	unsigned long vsatp;

            
            	unsigned long scounteren;

            
            	unsigned long senvcfg;

            
            };


            struct kvm_vcpu_smstateen_csr {

            
            	unsigned long sstateen0;

            
            };


            struct kvm_vcpu_zicfiss_csr {

            
            	unsigned long ssp;

            
            };


            struct kvm_vcpu_reset_state {

            
            	spinlock_t lock;

            
            	unsigned long pc;

            
            	unsigned long a1;

            
            };


            struct kvm_vcpu_arch {

            
            	/* VCPU ran at least once */

            
            	bool ran_atleast_once;


            	/* Last Host CPU on which Guest VCPU exited */

            
            	int last_exit_cpu;


            	/* ISA feature bits (similar to MISA) */

            
            	DECLARE_BITMAP(isa, RISCV_ISA_EXT_MAX);


            	/* Vendor, Arch, and Implementation details */

            
            	unsigned long mvendorid;

            
            	unsigned long marchid;

            
            	unsigned long mimpid;


            	/* SSCRATCH, STVEC, and SCOUNTEREN of Host */

            
            	unsigned long host_sscratch;

            
            	unsigned long host_stvec;

            
            	unsigned long host_scounteren;

            
            	unsigned long host_senvcfg;

            
            	unsigned long host_sstateen0;


            	/* CPU context of Host */

            
            	struct kvm_cpu_context host_context;


            	/* CPU context of Guest VCPU */

            
            	struct kvm_cpu_context guest_context;


            	/* CPU CSR context of Guest VCPU */

            
            	struct kvm_vcpu_csr guest_csr;


            	/* CPU Smstateen CSR context of Guest VCPU */

            
            	struct kvm_vcpu_smstateen_csr smstateen_csr;


            	/* CPU Zicfiss CSR context of Guest VCPU */

            
            	struct kvm_vcpu_zicfiss_csr zicfiss_csr;


            	/* CPU reset state of Guest VCPU */

            
            	struct kvm_vcpu_reset_state reset_state;


            	/*

            
            	 * VCPU interrupts

            
            	 *

            
            	 * The irqs_pending bitmap represents pending interrupts whereas

            
            	 * irqs_pending_mask represents bits changed in irqs_pending. Updates

            
            	 * to these bitmaps are serialized so vcpu interrupt sync/flush cannot

            
            	 * drop a newly injected interrupt while syncing guest-visible HVIP.

            
            	 */

            
            #define KVM_RISCV_VCPU_NR_IRQS	64

            
            	raw_spinlock_t irqs_pending_lock;

            
            	DECLARE_BITMAP(irqs_pending, KVM_RISCV_VCPU_NR_IRQS);

            
            	DECLARE_BITMAP(irqs_pending_mask, KVM_RISCV_VCPU_NR_IRQS);


            	/* VCPU Timer */

            
            	struct kvm_vcpu_timer timer;


            	/* HFENCE request queue */

            
            	spinlock_t hfence_lock;

            
            	unsigned long hfence_head;

            
            	unsigned long hfence_tail;

            
            	struct kvm_riscv_hfence hfence_queue[KVM_RISCV_VCPU_MAX_HFENCE];


            	/* MMIO instruction details */

            
            	struct kvm_mmio_decode mmio_decode;


            	/* CSR instruction details */

            
            	struct kvm_csr_decode csr_decode;


            	/* SBI context */

            
            	struct kvm_vcpu_sbi_context sbi_context;


            	/* AIA VCPU context */

            
            	struct kvm_vcpu_aia aia_context;


            	/* Cache pages needed to program page tables with spinlock held */

            
            	struct kvm_mmu_memory_cache mmu_page_cache;


            	/* VCPU power state */

            
            	struct kvm_mp_state mp_state;

            
            	spinlock_t mp_state_lock;


            	/* Don't run the VCPU (blocked) */

            
            	bool pause;


            	/* Performance monitoring context */

            
            	struct kvm_pmu pmu_context;


            	/* Firmware feature SBI extension context */

            
            	struct kvm_sbi_fwft fwft_context;


            	/* 'static' configurations which are set only once */

            
            	struct kvm_vcpu_config cfg;


            	/* Indicates modified guest CSRs */

            
            	bool csr_dirty;


            	/* SBI steal-time accounting */

            
            	struct {

            
            		gpa_t shmem;

            
            		u64 last_steal;

            
            	} sta;

            
            };


            /*

            
             * Returns true if a Performance Monitoring Interrupt (PMI), a.k.a. perf event,

            
             * arrived in guest context.  For riscv, any event that arrives while a vCPU is

            
             * loaded is considered to be "in guest".

            
             */

            
            static inline bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu)

            
            {

            
            	return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu;

            
            }


            static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}

            
            static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}


            void kvm_riscv_clear_former_vcpu(void);


            int kvm_riscv_setup_default_irq_routing(struct kvm *kvm, u32 lines);


            void __kvm_riscv_unpriv_trap(void);


            unsigned long kvm_riscv_vcpu_unpriv_read(struct kvm_vcpu *vcpu,

            
            					 bool read_insn,

            
            					 unsigned long guest_addr,

            
            					 struct kvm_cpu_trap *trap);

            
            void kvm_riscv_vcpu_trap_redirect(struct kvm_vcpu *vcpu,

            
            				  struct kvm_cpu_trap *trap);

            
            int kvm_riscv_vcpu_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,

            
            			struct kvm_cpu_trap *trap);


            void __kvm_riscv_switch_to(struct kvm_vcpu_arch *vcpu_arch);


            void kvm_riscv_vcpu_setup_isa(struct kvm_vcpu *vcpu);

            
            unsigned long kvm_riscv_vcpu_num_regs(struct kvm_vcpu *vcpu);

            
            int kvm_riscv_vcpu_copy_reg_indices(struct kvm_vcpu *vcpu,

            
            				    u64 __user *uindices);

            
            int kvm_riscv_vcpu_get_reg(struct kvm_vcpu *vcpu,

            
            			   const struct kvm_one_reg *reg);

            
            int kvm_riscv_vcpu_set_reg(struct kvm_vcpu *vcpu,

            
            			   const struct kvm_one_reg *reg);


            int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);

            
            int kvm_riscv_vcpu_unset_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);

            
            void kvm_riscv_vcpu_flush_interrupts(struct kvm_vcpu *vcpu);

            
            void kvm_riscv_vcpu_sync_interrupts(struct kvm_vcpu *vcpu);

            
            bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, u64 mask);

            
            void __kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);

            
            void kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);

            
            void __kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);

            
            void kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);

            
            bool kvm_riscv_vcpu_stopped(struct kvm_vcpu *vcpu);


            void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu);


            /* Flags representing implementation specific details */

            
            DECLARE_STATIC_KEY_FALSE(kvm_riscv_vsstage_tlb_no_gpa);


            #endif /* __RISCV_KVM_HOST_H__ */
	/* SPDX-License-Identifier: GPL-2.0-only */
	/*
	* Copyright (C) 2019 Western Digital Corporation or its affiliates.
	*
	* Authors:
	* Anup Patel <anup.patel@wdc.com>
	*/

	#ifndef __RISCV_KVM_HOST_H__
	#define __RISCV_KVM_HOST_H__

	#include <linux/types.h>
	#include <linux/kvm.h>
	#include <linux/kvm_types.h>
	#include <linux/spinlock.h>
	#include <asm/hwcap.h>
	#include <asm/kvm_aia.h>
	#include <asm/ptrace.h>
	#include <asm/kvm_tlb.h>
	#include <asm/kvm_vmid.h>
	#include <asm/kvm_vcpu_config.h>
	#include <asm/kvm_vcpu_fp.h>
	#include <asm/kvm_vcpu_insn.h>
	#include <asm/kvm_vcpu_sbi.h>
	#include <asm/kvm_vcpu_sbi_fwft.h>
	#include <asm/kvm_vcpu_timer.h>
	#include <asm/kvm_vcpu_pmu.h>

	#define KVM_MAX_VCPUS 1024

	#define KVM_HALT_POLL_NS_DEFAULT 500000

	#define KVM_VCPU_MAX_FEATURES 0

	#define KVM_IRQCHIP_NUM_PINS 1024

	#define KVM_REQ_SLEEP \
	KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT \| KVM_REQUEST_NO_WAKEUP)
	#define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(1)
	#define KVM_REQ_UPDATE_HGATP KVM_ARCH_REQ(2)
	#define KVM_REQ_FENCE_I \
	KVM_ARCH_REQ_FLAGS(3, KVM_REQUEST_WAIT \| KVM_REQUEST_NO_WAKEUP)
	#define KVM_REQ_HFENCE_VVMA_ALL \
	KVM_ARCH_REQ_FLAGS(4, KVM_REQUEST_WAIT \| KVM_REQUEST_NO_WAKEUP)
	#define KVM_REQ_HFENCE \
	KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT \| KVM_REQUEST_NO_WAKEUP)
	#define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6)

	#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE

	#define KVM_HAVE_MMU_RWLOCK

	#define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE \| \
	KVM_DIRTY_LOG_INITIALLY_SET)

	struct kvm_vm_stat {
	struct kvm_vm_stat_generic generic;
	};

	struct kvm_vcpu_stat {
	struct kvm_vcpu_stat_generic generic;
	u64 ecall_exit_stat;
	u64 wfi_exit_stat;
	u64 wrs_exit_stat;
	u64 mmio_exit_user;
	u64 mmio_exit_kernel;
	u64 csr_exit_user;
	u64 csr_exit_kernel;
	u64 signal_exits;
	u64 exits;
	u64 instr_illegal_exits;
	u64 load_misaligned_exits;
	u64 store_misaligned_exits;
	u64 load_access_exits;
	u64 store_access_exits;
	};

	struct kvm_arch_memory_slot {
	};

	struct kvm_arch {
	/* G-stage vmid */
	struct kvm_vmid vmid;

	/* G-stage page table */
	pgd_t *pgd;
	phys_addr_t pgd_phys;
	unsigned long pgd_levels;
	struct kvm_mmu_memory_cache pgd_split_page_cache;

	/* Guest Timer */
	struct kvm_guest_timer timer;

	/* AIA Guest/VM context */
	struct kvm_aia aia;

	/* KVM_CAP_RISCV_MP_STATE_RESET */
	bool mp_state_reset;
	};

	struct kvm_cpu_trap {
	unsigned long sepc;
	unsigned long scause;
	unsigned long stval;
	unsigned long htval;
	unsigned long htinst;
	};

	struct kvm_cpu_context {
	unsigned long zero;
	unsigned long ra;
	unsigned long sp;
	unsigned long gp;
	unsigned long tp;
	unsigned long t0;
	unsigned long t1;
	unsigned long t2;
	unsigned long s0;
	unsigned long s1;
	unsigned long a0;
	unsigned long a1;
	unsigned long a2;
	unsigned long a3;
	unsigned long a4;
	unsigned long a5;
	unsigned long a6;
	unsigned long a7;
	unsigned long s2;
	unsigned long s3;
	unsigned long s4;
	unsigned long s5;
	unsigned long s6;
	unsigned long s7;
	unsigned long s8;
	unsigned long s9;
	unsigned long s10;
	unsigned long s11;
	unsigned long t3;
	unsigned long t4;
	unsigned long t5;
	unsigned long t6;
	unsigned long sepc;
	unsigned long sstatus;
	unsigned long hstatus;
	union __riscv_fp_state fp;
	struct __riscv_v_ext_state vector;
	};

	struct kvm_vcpu_csr {
	unsigned long vsstatus;
	unsigned long vsie;
	unsigned long vstvec;
	unsigned long vsscratch;
	unsigned long vsepc;
	unsigned long vscause;
	unsigned long vstval;
	unsigned long hvip;
	unsigned long vsatp;
	unsigned long scounteren;
	unsigned long senvcfg;
	};

	struct kvm_vcpu_smstateen_csr {
	unsigned long sstateen0;
	};

	struct kvm_vcpu_zicfiss_csr {
	unsigned long ssp;
	};

	struct kvm_vcpu_reset_state {
	spinlock_t lock;
	unsigned long pc;
	unsigned long a1;
	};

	struct kvm_vcpu_arch {
	/* VCPU ran at least once */
	bool ran_atleast_once;

	/* Last Host CPU on which Guest VCPU exited */
	int last_exit_cpu;

	/* ISA feature bits (similar to MISA) */
	DECLARE_BITMAP(isa, RISCV_ISA_EXT_MAX);

	/* Vendor, Arch, and Implementation details */
	unsigned long mvendorid;
	unsigned long marchid;
	unsigned long mimpid;

	/* SSCRATCH, STVEC, and SCOUNTEREN of Host */
	unsigned long host_sscratch;
	unsigned long host_stvec;
	unsigned long host_scounteren;
	unsigned long host_senvcfg;
	unsigned long host_sstateen0;

	/* CPU context of Host */
	struct kvm_cpu_context host_context;

	/* CPU context of Guest VCPU */
	struct kvm_cpu_context guest_context;

	/* CPU CSR context of Guest VCPU */
	struct kvm_vcpu_csr guest_csr;

	/* CPU Smstateen CSR context of Guest VCPU */
	struct kvm_vcpu_smstateen_csr smstateen_csr;

	/* CPU Zicfiss CSR context of Guest VCPU */
	struct kvm_vcpu_zicfiss_csr zicfiss_csr;

	/* CPU reset state of Guest VCPU */
	struct kvm_vcpu_reset_state reset_state;

	/*
	* VCPU interrupts
	*
	* The irqs_pending bitmap represents pending interrupts whereas
	* irqs_pending_mask represents bits changed in irqs_pending. Updates
	* to these bitmaps are serialized so vcpu interrupt sync/flush cannot
	* drop a newly injected interrupt while syncing guest-visible HVIP.
	*/
	#define KVM_RISCV_VCPU_NR_IRQS 64
	raw_spinlock_t irqs_pending_lock;
	DECLARE_BITMAP(irqs_pending, KVM_RISCV_VCPU_NR_IRQS);
	DECLARE_BITMAP(irqs_pending_mask, KVM_RISCV_VCPU_NR_IRQS);

	/* VCPU Timer */
	struct kvm_vcpu_timer timer;

	/* HFENCE request queue */
	spinlock_t hfence_lock;
	unsigned long hfence_head;
	unsigned long hfence_tail;
	struct kvm_riscv_hfence hfence_queue[KVM_RISCV_VCPU_MAX_HFENCE];

	/* MMIO instruction details */
	struct kvm_mmio_decode mmio_decode;

	/* CSR instruction details */
	struct kvm_csr_decode csr_decode;

	/* SBI context */
	struct kvm_vcpu_sbi_context sbi_context;

	/* AIA VCPU context */
	struct kvm_vcpu_aia aia_context;

	/* Cache pages needed to program page tables with spinlock held */
	struct kvm_mmu_memory_cache mmu_page_cache;

	/* VCPU power state */
	struct kvm_mp_state mp_state;
	spinlock_t mp_state_lock;

	/* Don't run the VCPU (blocked) */
	bool pause;

	/* Performance monitoring context */
	struct kvm_pmu pmu_context;

	/* Firmware feature SBI extension context */
	struct kvm_sbi_fwft fwft_context;

	/* 'static' configurations which are set only once */
	struct kvm_vcpu_config cfg;

	/* Indicates modified guest CSRs */
	bool csr_dirty;

	/* SBI steal-time accounting */
	struct {
	gpa_t shmem;
	u64 last_steal;
	} sta;
	};

	/*
	* Returns true if a Performance Monitoring Interrupt (PMI), a.k.a. perf event,
	* arrived in guest context. For riscv, any event that arrives while a vCPU is
	* loaded is considered to be "in guest".
	*/
	static inline bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu)
	{
	return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu;
	}

	static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
	static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}

	void kvm_riscv_clear_former_vcpu(void);

	int kvm_riscv_setup_default_irq_routing(struct kvm *kvm, u32 lines);

	void __kvm_riscv_unpriv_trap(void);

	unsigned long kvm_riscv_vcpu_unpriv_read(struct kvm_vcpu *vcpu,
	bool read_insn,
	unsigned long guest_addr,
	struct kvm_cpu_trap *trap);
	void kvm_riscv_vcpu_trap_redirect(struct kvm_vcpu *vcpu,
	struct kvm_cpu_trap *trap);
	int kvm_riscv_vcpu_exit(struct kvm_vcpu vcpu, struct kvm_run run,
	struct kvm_cpu_trap *trap);

	void __kvm_riscv_switch_to(struct kvm_vcpu_arch *vcpu_arch);

	void kvm_riscv_vcpu_setup_isa(struct kvm_vcpu *vcpu);
	unsigned long kvm_riscv_vcpu_num_regs(struct kvm_vcpu *vcpu);
	int kvm_riscv_vcpu_copy_reg_indices(struct kvm_vcpu *vcpu,
	u64 __user *uindices);
	int kvm_riscv_vcpu_get_reg(struct kvm_vcpu *vcpu,
	const struct kvm_one_reg *reg);
	int kvm_riscv_vcpu_set_reg(struct kvm_vcpu *vcpu,
	const struct kvm_one_reg *reg);

	int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);
	int kvm_riscv_vcpu_unset_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);
	void kvm_riscv_vcpu_flush_interrupts(struct kvm_vcpu *vcpu);
	void kvm_riscv_vcpu_sync_interrupts(struct kvm_vcpu *vcpu);
	bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, u64 mask);
	void __kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);
	void kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);
	void __kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);
	void kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);
	bool kvm_riscv_vcpu_stopped(struct kvm_vcpu *vcpu);

	void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu);

	/* Flags representing implementation specific details */
	DECLARE_STATIC_KEY_FALSE(kvm_riscv_vsstage_tlb_no_gpa);

	#endif /* __RISCV_KVM_HOST_H__ */