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21#ifndef __S390_KVM_PARA_H
22#define __S390_KVM_PARA_H
23
24#include <uapi/asm/kvm_para.h>
25#include <asm/diag.h>
26
27#define HYPERCALL_FMT_0
28#define HYPERCALL_FMT_1 , "0" (r2)
29#define HYPERCALL_FMT_2 , "d" (r3) HYPERCALL_FMT_1
30#define HYPERCALL_FMT_3 , "d" (r4) HYPERCALL_FMT_2
31#define HYPERCALL_FMT_4 , "d" (r5) HYPERCALL_FMT_3
32#define HYPERCALL_FMT_5 , "d" (r6) HYPERCALL_FMT_4
33#define HYPERCALL_FMT_6 , "d" (r7) HYPERCALL_FMT_5
34
35#define HYPERCALL_PARM_0
36#define HYPERCALL_PARM_1 , unsigned long arg1
37#define HYPERCALL_PARM_2 HYPERCALL_PARM_1, unsigned long arg2
38#define HYPERCALL_PARM_3 HYPERCALL_PARM_2, unsigned long arg3
39#define HYPERCALL_PARM_4 HYPERCALL_PARM_3, unsigned long arg4
40#define HYPERCALL_PARM_5 HYPERCALL_PARM_4, unsigned long arg5
41#define HYPERCALL_PARM_6 HYPERCALL_PARM_5, unsigned long arg6
42
43#define HYPERCALL_REGS_0
44#define HYPERCALL_REGS_1 \
45 register unsigned long r2 asm("2") = arg1
46#define HYPERCALL_REGS_2 \
47 HYPERCALL_REGS_1; \
48 register unsigned long r3 asm("3") = arg2
49#define HYPERCALL_REGS_3 \
50 HYPERCALL_REGS_2; \
51 register unsigned long r4 asm("4") = arg3
52#define HYPERCALL_REGS_4 \
53 HYPERCALL_REGS_3; \
54 register unsigned long r5 asm("5") = arg4
55#define HYPERCALL_REGS_5 \
56 HYPERCALL_REGS_4; \
57 register unsigned long r6 asm("6") = arg5
58#define HYPERCALL_REGS_6 \
59 HYPERCALL_REGS_5; \
60 register unsigned long r7 asm("7") = arg6
61
62#define HYPERCALL_ARGS_0
63#define HYPERCALL_ARGS_1 , arg1
64#define HYPERCALL_ARGS_2 HYPERCALL_ARGS_1, arg2
65#define HYPERCALL_ARGS_3 HYPERCALL_ARGS_2, arg3
66#define HYPERCALL_ARGS_4 HYPERCALL_ARGS_3, arg4
67#define HYPERCALL_ARGS_5 HYPERCALL_ARGS_4, arg5
68#define HYPERCALL_ARGS_6 HYPERCALL_ARGS_5, arg6
69
70#define GENERATE_KVM_HYPERCALL_FUNC(args) \
71static inline \
72long __kvm_hypercall##args(unsigned long nr HYPERCALL_PARM_##args) \
73{ \
74 register unsigned long __nr asm("1") = nr; \
75 register long __rc asm("2"); \
76 HYPERCALL_REGS_##args; \
77 \
78 asm volatile ( \
79 " diag 2,4,0x500\n" \
80 : "=d" (__rc) \
81 : "d" (__nr) HYPERCALL_FMT_##args \
82 : "memory", "cc"); \
83 return __rc; \
84} \
85 \
86static inline \
87long kvm_hypercall##args(unsigned long nr HYPERCALL_PARM_##args) \
88{ \
89 diag_stat_inc(DIAG_STAT_X500); \
90 return __kvm_hypercall##args(nr HYPERCALL_ARGS_##args); \
91}
92
93GENERATE_KVM_HYPERCALL_FUNC(0)
94GENERATE_KVM_HYPERCALL_FUNC(1)
95GENERATE_KVM_HYPERCALL_FUNC(2)
96GENERATE_KVM_HYPERCALL_FUNC(3)
97GENERATE_KVM_HYPERCALL_FUNC(4)
98GENERATE_KVM_HYPERCALL_FUNC(5)
99GENERATE_KVM_HYPERCALL_FUNC(6)
100
101
102static inline int kvm_para_available(void)
103{
104 return 1;
105}
106
107
108static inline unsigned int kvm_arch_para_features(void)
109{
110 return 0;
111}
112
113static inline unsigned int kvm_arch_para_hints(void)
114{
115 return 0;
116}
117
118static inline bool kvm_check_and_clear_guest_paused(void)
119{
120 return false;
121}
122
123#endif
124