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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* Copyright (C) 2014 Citrix Systems UK Ltd.
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qapi/error.h"
#include "hw/xen/xen_native.h"
#include "hw/xen/xen-legacy-backend.h"
#include "hw/xen/xen_pt.h"
#include "chardev/char.h"
#include "qemu/accel.h"
#include "sysemu/cpus.h"
#include "sysemu/xen.h"
#include "sysemu/runstate.h"
#include "migration/misc.h"
#include "migration/global_state.h"
#include "hw/boards.h"
bool xen_allowed;
xc_interface *xen_xc;
xenforeignmemory_handle *xen_fmem;
xendevicemodel_handle *xen_dmod;
static void xenstore_record_dm_state(const char *state)
{
struct xs_handle *xs;
char path[50];
/* We now have everything we need to set the xenstore entry. */
xs = xs_open(0);
if (xs == NULL) {
fprintf(stderr, "Could not contact XenStore\n");
exit(1);
}
snprintf(path, sizeof (path), "device-model/%u/state", xen_domid);
/*
* This call may fail when running restricted so don't make it fatal in
* that case. Toolstacks should instead use QMP to listen for state changes.
*/
if (!xs_write(xs, XBT_NULL, path, state, strlen(state)) &&
!xen_domid_restrict) {
error_report("error recording dm state");
exit(1);
}
xs_close(xs);
}
static void xen_change_state_handler(void *opaque, bool running,
RunState state)
{
if (running) {
/* record state running */
xenstore_record_dm_state("running");
}
}
static bool xen_get_igd_gfx_passthru(Object *obj, Error **errp)
{
return xen_igd_gfx_pt_enabled();
}
static void xen_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
{
xen_igd_gfx_pt_set(value, errp);
}
static void xen_setup_post(MachineState *ms, AccelState *accel)
{
int rc;
if (xen_domid_restrict) {
rc = xen_restrict(xen_domid);
if (rc < 0) {
perror("xen: failed to restrict");
exit(1);
}
}
}
static int xen_init(MachineState *ms)
{
MachineClass *mc = MACHINE_GET_CLASS(ms);
xen_xc = xc_interface_open(0, 0, 0);
if (xen_xc == NULL) {
xen_pv_printf(NULL, 0, "can't open xen interface\n");
return -1;
}
xen_fmem = xenforeignmemory_open(0, 0);
if (xen_fmem == NULL) {
xen_pv_printf(NULL, 0, "can't open xen fmem interface\n");
xc_interface_close(xen_xc);
return -1;
}
xen_dmod = xendevicemodel_open(0, 0);
if (xen_dmod == NULL) {
xen_pv_printf(NULL, 0, "can't open xen devicemodel interface\n");
xenforeignmemory_close(xen_fmem);
xc_interface_close(xen_xc);
return -1;
}
qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
/*
* opt out of system RAM being allocated by generic code
*/
mc->default_ram_id = NULL;
xen_mode = XEN_ATTACH;
return 0;
}
static void xen_accel_class_init(ObjectClass *oc, void *data)
{
AccelClass *ac = ACCEL_CLASS(oc);
static GlobalProperty compat[] = {
{ "migration", "store-global-state", "off" },
{ "migration", "send-configuration", "off" },
{ "migration", "send-section-footer", "off" },
};
ac->name = "Xen";
ac->init_machine = xen_init;
ac->setup_post = xen_setup_post;
ac->allowed = &xen_allowed;
ac->compat_props = g_ptr_array_new();
compat_props_add(ac->compat_props, compat, G_N_ELEMENTS(compat));
object_class_property_add_bool(oc, "igd-passthru",
xen_get_igd_gfx_passthru, xen_set_igd_gfx_passthru);
object_class_property_set_description(oc, "igd-passthru",
"Set on/off to enable/disable igd passthrou");
}
#define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")
static const TypeInfo xen_accel_type = {
.name = TYPE_XEN_ACCEL,
.parent = TYPE_ACCEL,
.class_init = xen_accel_class_init,
};
static void xen_accel_ops_class_init(ObjectClass *oc, void *data)
{
AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
ops->create_vcpu_thread = dummy_start_vcpu_thread;
}
static const TypeInfo xen_accel_ops_type = {
.name = ACCEL_OPS_NAME("xen"),
.parent = TYPE_ACCEL_OPS,
.class_init = xen_accel_ops_class_init,
.abstract = true,
};
static void xen_type_init(void)
{
type_register_static(&xen_accel_type);
type_register_static(&xen_accel_ops_type);
}
type_init(xen_type_init);
|
