target/arm: Convert Neon VCVT fixed-point to gvec
[qemu.git] / target / i386 / hyperv.c
1 /*
2 * QEMU KVM Hyper-V support
3 *
4 * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
5 *
6 * Authors:
7 * Andrey Smetanin <asmetanin@virtuozzo.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 *
12 */
13
14 #include "qemu/osdep.h"
15 #include "qemu/main-loop.h"
16 #include "hyperv.h"
17 #include "hw/hyperv/hyperv.h"
18 #include "hyperv-proto.h"
19
20 int hyperv_x86_synic_add(X86CPU *cpu)
21 {
22 hyperv_synic_add(CPU(cpu));
23 return 0;
24 }
25
26 void hyperv_x86_synic_reset(X86CPU *cpu)
27 {
28 hyperv_synic_reset(CPU(cpu));
29 }
30
31 void hyperv_x86_synic_update(X86CPU *cpu)
32 {
33 CPUX86State *env = &cpu->env;
34 bool enable = env->msr_hv_synic_control & HV_SYNIC_ENABLE;
35 hwaddr msg_page_addr = (env->msr_hv_synic_msg_page & HV_SIMP_ENABLE) ?
36 (env->msr_hv_synic_msg_page & TARGET_PAGE_MASK) : 0;
37 hwaddr event_page_addr = (env->msr_hv_synic_evt_page & HV_SIEFP_ENABLE) ?
38 (env->msr_hv_synic_evt_page & TARGET_PAGE_MASK) : 0;
39 hyperv_synic_update(CPU(cpu), enable, msg_page_addr, event_page_addr);
40 }
41
42 static void async_synic_update(CPUState *cs, run_on_cpu_data data)
43 {
44 qemu_mutex_lock_iothread();
45 hyperv_x86_synic_update(X86_CPU(cs));
46 qemu_mutex_unlock_iothread();
47 }
48
49 int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)
50 {
51 CPUX86State *env = &cpu->env;
52
53 switch (exit->type) {
54 case KVM_EXIT_HYPERV_SYNIC:
55 if (!hyperv_feat_enabled(cpu, HYPERV_FEAT_SYNIC)) {
56 return -1;
57 }
58
59 switch (exit->u.synic.msr) {
60 case HV_X64_MSR_SCONTROL:
61 env->msr_hv_synic_control = exit->u.synic.control;
62 break;
63 case HV_X64_MSR_SIMP:
64 env->msr_hv_synic_msg_page = exit->u.synic.msg_page;
65 break;
66 case HV_X64_MSR_SIEFP:
67 env->msr_hv_synic_evt_page = exit->u.synic.evt_page;
68 break;
69 default:
70 return -1;
71 }
72
73 /*
74 * this will run in this cpu thread before it returns to KVM, but in a
75 * safe environment (i.e. when all cpus are quiescent) -- this is
76 * necessary because memory hierarchy is being changed
77 */
78 async_safe_run_on_cpu(CPU(cpu), async_synic_update, RUN_ON_CPU_NULL);
79
80 return 0;
81 case KVM_EXIT_HYPERV_HCALL: {
82 uint16_t code = exit->u.hcall.input & 0xffff;
83 bool fast = exit->u.hcall.input & HV_HYPERCALL_FAST;
84 uint64_t param = exit->u.hcall.params[0];
85
86 switch (code) {
87 case HV_POST_MESSAGE:
88 exit->u.hcall.result = hyperv_hcall_post_message(param, fast);
89 break;
90 case HV_SIGNAL_EVENT:
91 exit->u.hcall.result = hyperv_hcall_signal_event(param, fast);
92 break;
93 default:
94 exit->u.hcall.result = HV_STATUS_INVALID_HYPERCALL_CODE;
95 }
96 return 0;
97 }
98 default:
99 return -1;
100 }
101 }