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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * tools/testing/selftests/kvm/include/kvm_util.h
4 *
5 * Copyright (C) 2018, Google LLC.
6 */
7#ifndef SELFTEST_KVM_UCALL_COMMON_H
8#define SELFTEST_KVM_UCALL_COMMON_H
9#include "test_util.h"
10
11/* Common ucalls */
12enum {
13 UCALL_NONE,
14 UCALL_SYNC,
15 UCALL_ABORT,
16 UCALL_DONE,
17 UCALL_UNHANDLED,
18};
19
20#define UCALL_MAX_ARGS 7
21
22struct ucall {
23 uint64_t cmd;
24 uint64_t args[UCALL_MAX_ARGS];
25};
26
27void ucall_init(struct kvm_vm *vm, void *arg);
28void ucall_uninit(struct kvm_vm *vm);
29void ucall(uint64_t cmd, int nargs, ...);
30uint64_t get_ucall(struct kvm_vcpu *vcpu, struct ucall *uc);
31
32#define GUEST_SYNC_ARGS(stage, arg1, arg2, arg3, arg4) \
33 ucall(UCALL_SYNC, 6, "hello", stage, arg1, arg2, arg3, arg4)
34#define GUEST_SYNC(stage) ucall(UCALL_SYNC, 2, "hello", stage)
35#define GUEST_DONE() ucall(UCALL_DONE, 0)
36
37enum guest_assert_builtin_args {
38 GUEST_ERROR_STRING,
39 GUEST_FILE,
40 GUEST_LINE,
41 GUEST_ASSERT_BUILTIN_NARGS
42};
43
44#define __GUEST_ASSERT(_condition, _condstr, _nargs, _args...) \
45do { \
46 if (!(_condition)) \
47 ucall(UCALL_ABORT, GUEST_ASSERT_BUILTIN_NARGS + _nargs, \
48 "Failed guest assert: " _condstr, \
49 __FILE__, __LINE__, ##_args); \
50} while (0)
51
52#define GUEST_ASSERT(_condition) \
53 __GUEST_ASSERT(_condition, #_condition, 0, 0)
54
55#define GUEST_ASSERT_1(_condition, arg1) \
56 __GUEST_ASSERT(_condition, #_condition, 1, (arg1))
57
58#define GUEST_ASSERT_2(_condition, arg1, arg2) \
59 __GUEST_ASSERT(_condition, #_condition, 2, (arg1), (arg2))
60
61#define GUEST_ASSERT_3(_condition, arg1, arg2, arg3) \
62 __GUEST_ASSERT(_condition, #_condition, 3, (arg1), (arg2), (arg3))
63
64#define GUEST_ASSERT_4(_condition, arg1, arg2, arg3, arg4) \
65 __GUEST_ASSERT(_condition, #_condition, 4, (arg1), (arg2), (arg3), (arg4))
66
67#define GUEST_ASSERT_EQ(a, b) __GUEST_ASSERT((a) == (b), #a " == " #b, 2, a, b)
68
69#define __REPORT_GUEST_ASSERT(_ucall, fmt, _args...) \
70 TEST_FAIL("%s at %s:%ld\n" fmt, \
71 (const char *)(_ucall).args[GUEST_ERROR_STRING], \
72 (const char *)(_ucall).args[GUEST_FILE], \
73 (_ucall).args[GUEST_LINE], \
74 ##_args)
75
76#define GUEST_ASSERT_ARG(ucall, i) ((ucall).args[GUEST_ASSERT_BUILTIN_NARGS + i])
77
78#define REPORT_GUEST_ASSERT(ucall) \
79 __REPORT_GUEST_ASSERT((ucall), "")
80
81#define REPORT_GUEST_ASSERT_1(ucall, fmt) \
82 __REPORT_GUEST_ASSERT((ucall), \
83 fmt, \
84 GUEST_ASSERT_ARG((ucall), 0))
85
86#define REPORT_GUEST_ASSERT_2(ucall, fmt) \
87 __REPORT_GUEST_ASSERT((ucall), \
88 fmt, \
89 GUEST_ASSERT_ARG((ucall), 0), \
90 GUEST_ASSERT_ARG((ucall), 1))
91
92#define REPORT_GUEST_ASSERT_3(ucall, fmt) \
93 __REPORT_GUEST_ASSERT((ucall), \
94 fmt, \
95 GUEST_ASSERT_ARG((ucall), 0), \
96 GUEST_ASSERT_ARG((ucall), 1), \
97 GUEST_ASSERT_ARG((ucall), 2))
98
99#define REPORT_GUEST_ASSERT_4(ucall, fmt) \
100 __REPORT_GUEST_ASSERT((ucall), \
101 fmt, \
102 GUEST_ASSERT_ARG((ucall), 0), \
103 GUEST_ASSERT_ARG((ucall), 1), \
104 GUEST_ASSERT_ARG((ucall), 2), \
105 GUEST_ASSERT_ARG((ucall), 3))
106
107#define REPORT_GUEST_ASSERT_N(ucall, fmt, args...) \
108 __REPORT_GUEST_ASSERT((ucall), fmt, ##args)
109
110#endif /* SELFTEST_KVM_UCALL_COMMON_H */