hw/arm/bcm2836: Only provide "enabled-cpus" property to multicore SoCs
[qemu.git] / hw / s390x / pv.c
1 /*
2 * Protected Virtualization functions
3 *
4 * Copyright IBM Corp. 2020
5 * Author(s):
6 * Janosch Frank <frankja@linux.ibm.com>
7 *
8 * This work is licensed under the terms of the GNU GPL, version 2 or (at
9 * your option) any later version. See the COPYING file in the top-level
10 * directory.
11 */
12 #include "qemu/osdep.h"
13
14 #include <linux/kvm.h>
15
16 #include "cpu.h"
17 #include "qemu/error-report.h"
18 #include "sysemu/kvm.h"
19 #include "hw/s390x/ipl.h"
20 #include "hw/s390x/pv.h"
21
22 static int __s390_pv_cmd(uint32_t cmd, const char *cmdname, void *data)
23 {
24 struct kvm_pv_cmd pv_cmd = {
25 .cmd = cmd,
26 .data = (uint64_t)data,
27 };
28 int rc;
29
30 do {
31 rc = kvm_vm_ioctl(kvm_state, KVM_S390_PV_COMMAND, &pv_cmd);
32 } while (rc == -EINTR);
33
34 if (rc) {
35 error_report("KVM PV command %d (%s) failed: header rc %x rrc %x "
36 "IOCTL rc: %d", cmd, cmdname, pv_cmd.rc, pv_cmd.rrc,
37 rc);
38 }
39 return rc;
40 }
41
42 /*
43 * This macro lets us pass the command as a string to the function so
44 * we can print it on an error.
45 */
46 #define s390_pv_cmd(cmd, data) __s390_pv_cmd(cmd, #cmd, data);
47 #define s390_pv_cmd_exit(cmd, data) \
48 { \
49 int rc; \
50 \
51 rc = __s390_pv_cmd(cmd, #cmd, data);\
52 if (rc) { \
53 exit(1); \
54 } \
55 }
56
57 int s390_pv_vm_enable(void)
58 {
59 return s390_pv_cmd(KVM_PV_ENABLE, NULL);
60 }
61
62 void s390_pv_vm_disable(void)
63 {
64 s390_pv_cmd_exit(KVM_PV_DISABLE, NULL);
65 }
66
67 int s390_pv_set_sec_parms(uint64_t origin, uint64_t length)
68 {
69 struct kvm_s390_pv_sec_parm args = {
70 .origin = origin,
71 .length = length,
72 };
73
74 return s390_pv_cmd(KVM_PV_SET_SEC_PARMS, &args);
75 }
76
77 /*
78 * Called for each component in the SE type IPL parameter block 0.
79 */
80 int s390_pv_unpack(uint64_t addr, uint64_t size, uint64_t tweak)
81 {
82 struct kvm_s390_pv_unp args = {
83 .addr = addr,
84 .size = size,
85 .tweak = tweak,
86 };
87
88 return s390_pv_cmd(KVM_PV_UNPACK, &args);
89 }
90
91 void s390_pv_prep_reset(void)
92 {
93 s390_pv_cmd_exit(KVM_PV_PREP_RESET, NULL);
94 }
95
96 int s390_pv_verify(void)
97 {
98 return s390_pv_cmd(KVM_PV_VERIFY, NULL);
99 }
100
101 void s390_pv_unshare(void)
102 {
103 s390_pv_cmd_exit(KVM_PV_UNSHARE_ALL, NULL);
104 }
105
106 void s390_pv_inject_reset_error(CPUState *cs)
107 {
108 int r1 = (cs->kvm_run->s390_sieic.ipa & 0x00f0) >> 4;
109 CPUS390XState *env = &S390_CPU(cs)->env;
110
111 /* Report that we are unable to enter protected mode */
112 env->regs[r1 + 1] = DIAG_308_RC_INVAL_FOR_PV;
113 }