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
|
// SPDX-License-Identifier: GPL-2.0-only
/* Test operation exception forwarding.
*
* Copyright IBM Corp. 2025
*
* Authors:
* Janosch Frank <frankja@linux.ibm.com>
*/
#include "kselftest.h"
#include "kvm_util.h"
#include "test_util.h"
#include "sie.h"
#include <linux/kvm.h>
static void guest_code_instr0(void)
{
asm(".word 0x0000");
}
static void test_user_instr0(void)
{
struct kvm_vcpu *vcpu;
struct kvm_vm *vm;
int rc;
vm = vm_create_with_one_vcpu(&vcpu, guest_code_instr0);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_INSTR0, 0);
TEST_ASSERT_EQ(0, rc);
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.icptcode, ICPT_OPEREXC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0);
kvm_vm_free(vm);
}
static void guest_code_user_operexec(void)
{
asm(".word 0x0807");
}
static void test_user_operexec(void)
{
struct kvm_vcpu *vcpu;
struct kvm_vm *vm;
int rc;
vm = vm_create_with_one_vcpu(&vcpu, guest_code_user_operexec);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_OPEREXEC, 0);
TEST_ASSERT_EQ(0, rc);
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.icptcode, ICPT_OPEREXC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0x0807);
kvm_vm_free(vm);
/*
* Since user_operexec is the superset it can be used for the
* 0 instruction.
*/
vm = vm_create_with_one_vcpu(&vcpu, guest_code_instr0);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_OPEREXEC, 0);
TEST_ASSERT_EQ(0, rc);
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.icptcode, ICPT_OPEREXC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0);
kvm_vm_free(vm);
}
/* combine user_instr0 and user_operexec */
static void test_user_operexec_combined(void)
{
struct kvm_vcpu *vcpu;
struct kvm_vm *vm;
int rc;
vm = vm_create_with_one_vcpu(&vcpu, guest_code_user_operexec);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_INSTR0, 0);
TEST_ASSERT_EQ(0, rc);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_OPEREXEC, 0);
TEST_ASSERT_EQ(0, rc);
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.icptcode, ICPT_OPEREXC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0x0807);
kvm_vm_free(vm);
/* Reverse enablement order */
vm = vm_create_with_one_vcpu(&vcpu, guest_code_user_operexec);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_OPEREXEC, 0);
TEST_ASSERT_EQ(0, rc);
rc = __vm_enable_cap(vm, KVM_CAP_S390_USER_INSTR0, 0);
TEST_ASSERT_EQ(0, rc);
vcpu_run(vcpu);
TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_S390_SIEIC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.icptcode, ICPT_OPEREXC);
TEST_ASSERT_EQ(vcpu->run->s390_sieic.ipa, 0x0807);
kvm_vm_free(vm);
}
/*
* Run all tests above.
*
* Enablement after VCPU has been added is automatically tested since
* we enable the capability after VCPU creation.
*/
static struct testdef {
const char *name;
void (*test)(void);
} testlist[] = {
{ "instr0", test_user_instr0 },
{ "operexec", test_user_operexec },
{ "operexec_combined", test_user_operexec_combined},
};
int main(int argc, char *argv[])
{
int idx;
TEST_REQUIRE(kvm_has_cap(KVM_CAP_S390_USER_INSTR0));
ksft_print_header();
ksft_set_plan(ARRAY_SIZE(testlist));
for (idx = 0; idx < ARRAY_SIZE(testlist); idx++) {
testlist[idx].test();
ksft_test_result_pass("%s\n", testlist[idx].name);
}
ksft_finished();
}
|
