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
|
#include "test/kvm-eviction.h"
#include "test/kvm.h"
#include "test/util.h"
#include "cachepc/uapi.h"
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <err.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
static int child;
uint64_t
monitor(struct kvm *kvm, bool baseline)
{
struct cpc_event event;
int ret;
ret = ioctl(kvm_dev, KVM_CPC_POLL_EVENT, &event);
if (ret && errno == EAGAIN) return 0;
if (ret) err(1, "KVM_CPC_POLL_EVENT");
if (event.type != CPC_EVENT_TRACK_PAGE)
errx(1, "unexpected event type %i", event.type);
printf("Event: rip:%08llx prev:%llu next:%llu ret:%llu\n",
vm_get_rip(), event.page.inst_gfn_prev,
event.page.inst_gfn, event.page.retinst);
printf("\n");
ret = ioctl(kvm_dev, KVM_CPC_ACK_EVENT, &event.id);
if (ret) err(1, "KVM_CPC_ACK_EVENT");
return 1;
}
void
kill_child(void)
{
printf("Killing vm..\n");
kill(child, SIGKILL);
}
int
main(int argc, const char **argv)
{
struct ipc *ipc;
struct guest guest;
struct kvm kvm;
struct cpc_track_cfg cfg;
uint64_t eventcnt;
int ret;
vmtype = "kvm";
if (argc > 1) vmtype = argv[1];
if (strcmp(vmtype, "kvm") && strcmp(vmtype, "sev")
&& strcmp(vmtype, "sev-es")
&& strcmp(vmtype, "sev-snp"))
errx(1, "invalid vm mode: %s", vmtype);
setvbuf(stdout, NULL, _IONBF, 0);
kvm_setup_init();
ipc = ipc_alloc();
child = fork();
if (child < 0) err(1, "fork");
if (child == 0) {
pin_process(0, TARGET_CORE, true);
guest_init(&guest, "test/kvm-pagestep_guest");
vm_init(&kvm, &guest);
guest_deinit(&guest);
ret = ioctl(kvm_dev, KVM_CPC_RESET, NULL);
if (ret < 0) err(1, "KVM_CPC_RESET");
ipc_signal_parent(ipc);
ipc_wait_parent(ipc);
printf("VM start\n");
do {
ret = ioctl(kvm.vcpufd, KVM_RUN, NULL);
if (ret < 0) err(1, "KVM_RUN");
if (kvm.run->exit_reason == KVM_EXIT_HLT)
printf("VM halt\n");
} while (kvm.run->exit_reason == KVM_EXIT_HLT);
printf("VM exit\n");
vm_deinit(&kvm);
} else {
pin_process(0, SECONDARY_CORE, true);
atexit(kill_child);
ipc_wait_child(ipc);
printf("Monitor start\n");
memset(&cfg, 0, sizeof(cfg));
cfg.mode = CPC_TRACK_PAGES;
cfg.pages.singlestep_resolve = true;
ret = ioctl(kvm_dev, KVM_CPC_TRACK_MODE, &cfg);
if (ret) err(1, "KVM_CPC_TRACK_MODE");
ipc_signal_child(ipc);
eventcnt = 0;
while (eventcnt < 50) {
eventcnt += monitor(&kvm, true);
}
printf("Monitor exit\n");
}
ipc_free(ipc);
ret = ioctl(kvm_dev, KVM_CPC_RESET, NULL);
if (ret < 0) err(1, "KVM_CPC_RESET");
kvm_setup_deinit();
}
|
