kvm_vcpu_vector.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2022 SiFive
 4 *
 5 * Authors:
 6 *     Vincent Chen <vincent.chen@sifive.com>
 7 *     Greentime Hu <greentime.hu@sifive.com>
 8 */
 9
10#ifndef __KVM_VCPU_RISCV_VECTOR_H
11#define __KVM_VCPU_RISCV_VECTOR_H
12
13#include <linux/types.h>
14
15#ifdef CONFIG_RISCV_ISA_V
16#include <asm/vector.h>
17#include <asm/kvm_host.h>
18
19static __always_inline void __kvm_riscv_vector_save(struct kvm_cpu_context *context)
20{
21	__riscv_v_vstate_save(&context->vector, context->vector.datap);
22}
23
24static __always_inline void __kvm_riscv_vector_restore(struct kvm_cpu_context *context)
25{
26	__riscv_v_vstate_restore(&context->vector, context->vector.datap);
27}
28
29void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu);
30void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
31				      unsigned long *isa);
32void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
33					 unsigned long *isa);
34void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx);
35void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx);
36int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu);
37void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu);
38#else
39
40struct kvm_cpu_context;
41
42static inline void kvm_riscv_vcpu_vector_reset(struct kvm_vcpu *vcpu)
43{
44}
45
46static inline void kvm_riscv_vcpu_guest_vector_save(struct kvm_cpu_context *cntx,
47						    unsigned long *isa)
48{
49}
50
51static inline void kvm_riscv_vcpu_guest_vector_restore(struct kvm_cpu_context *cntx,
52						       unsigned long *isa)
53{
54}
55
56static inline void kvm_riscv_vcpu_host_vector_save(struct kvm_cpu_context *cntx)
57{
58}
59
60static inline void kvm_riscv_vcpu_host_vector_restore(struct kvm_cpu_context *cntx)
61{
62}
63
64static inline int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu)
65{
66	return 0;
67}
68
69static inline void kvm_riscv_vcpu_free_vector_context(struct kvm_vcpu *vcpu)
70{
71}
72#endif
73
74int kvm_riscv_vcpu_get_reg_vector(struct kvm_vcpu *vcpu,
75				  const struct kvm_one_reg *reg);
76int kvm_riscv_vcpu_set_reg_vector(struct kvm_vcpu *vcpu,
77				  const struct kvm_one_reg *reg);
78#endif