1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Test for s390x CPU resets
*
* Copyright (C) 2020, IBM
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include "test_util.h"
#include "kvm_util.h"
#define VCPU_ID 3
struct kvm_vm *vm;
struct kvm_run *run;
struct kvm_sync_regs *regs;
static uint64_t regs_null[16];
static uint64_t crs[16] = { 0x40000ULL,
0x42000ULL,
0, 0, 0, 0, 0,
0x43000ULL,
0, 0, 0, 0, 0,
0x44000ULL,
0, 0
};
static void guest_code_initial(void)
{
/* Round toward 0 */
uint32_t fpc = 0x11;
/* Dirty registers */
asm volatile (
" lctlg 0,15,%0\n"
" sfpc %1\n"
: : "Q" (crs), "d" (fpc));
GUEST_SYNC(0);
}
static void test_one_reg(uint64_t id, uint64_t value)
{
struct kvm_one_reg reg;
uint64_t eval_reg;
reg.addr = (uintptr_t)&eval_reg;
reg.id = id;
vcpu_get_reg(vm, VCPU_ID, ®);
TEST_ASSERT(eval_reg == value, "value == %s", value);
}
static void assert_clear(void)
{
struct kvm_sregs sregs;
struct kvm_regs regs;
struct kvm_fpu fpu;
vcpu_regs_get(vm, VCPU_ID, ®s);
TEST_ASSERT(!memcmp(®s.gprs, regs_null, sizeof(regs.gprs)), "grs == 0");
vcpu_sregs_get(vm, VCPU_ID, &sregs);
TEST_ASSERT(!memcmp(&sregs.acrs, regs_null, sizeof(sregs.acrs)), "acrs == 0");
vcpu_fpu_get(vm, VCPU_ID, &fpu);
TEST_ASSERT(!memcmp(&fpu.fprs, regs_null, sizeof(fpu.fprs)), "fprs == 0");
}
static void assert_initial(void)
{
struct kvm_sregs sregs;
struct kvm_fpu fpu;
vcpu_sregs_get(vm, VCPU_ID, &sregs);
TEST_ASSERT(sregs.crs[0] == 0xE0UL, "cr0 == 0xE0");
TEST_ASSERT(sregs.crs[14] == 0xC2000000UL, "cr14 == 0xC2000000");
TEST_ASSERT(!memcmp(&sregs.crs[1], regs_null, sizeof(sregs.crs[1]) * 12),
"cr1-13 == 0");
TEST_ASSERT(sregs.crs[15] == 0, "cr15 == 0");
vcpu_fpu_get(vm, VCPU_ID, &fpu);
TEST_ASSERT(!fpu.fpc, "fpc == 0");
test_one_reg(KVM_REG_S390_GBEA, 1);
test_one_reg(KVM_REG_S390_PP, 0);
test_one_reg(KVM_REG_S390_TODPR, 0);
test_one_reg(KVM_REG_S390_CPU_TIMER, 0);
test_one_reg(KVM_REG_S390_CLOCK_COMP, 0);
}
static void assert_normal(void)
{
test_one_reg(KVM_REG_S390_PFTOKEN, KVM_S390_PFAULT_TOKEN_INVALID);
}
static void test_normal(void)
{
printf("Testing normal reset\n");
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code_initial);
run = vcpu_state(vm, VCPU_ID);
regs = &run->s.regs;
vcpu_run(vm, VCPU_ID);
vcpu_ioctl(vm, VCPU_ID, KVM_S390_NORMAL_RESET, 0);
assert_normal();
kvm_vm_free(vm);
}
static void test_initial(void)
{
printf("Testing initial reset\n");
vm = vm_create_default(VCPU_ID, 0, guest_code_initial);
run = vcpu_state(vm, VCPU_ID);
regs = &run->s.regs;
vcpu_run(vm, VCPU_ID);
vcpu_ioctl(vm, VCPU_ID, KVM_S390_INITIAL_RESET, 0);
assert_normal();
assert_initial();
kvm_vm_free(vm);
}
static void test_clear(void)
{
printf("Testing clear reset\n");
vm = vm_create_default(VCPU_ID, 0, guest_code_initial);
run = vcpu_state(vm, VCPU_ID);
regs = &run->s.regs;
vcpu_run(vm, VCPU_ID);
vcpu_ioctl(vm, VCPU_ID, KVM_S390_CLEAR_RESET, 0);
assert_normal();
assert_initial();
assert_clear();
kvm_vm_free(vm);
}
int main(int argc, char *argv[])
{
setbuf(stdout, NULL); /* Tell stdout not to buffer its content */
test_initial();
if (kvm_check_cap(KVM_CAP_S390_VCPU_RESETS)) {
test_normal();
test_clear();
}
return 0;
}
|
