void pause_all_vcpus(void)
{
CPUState *cpu = first_cpu;
qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false);
while (cpu) {
cpu->stop = true;
qemu_cpu_kick(cpu);
cpu = cpu->next_cpu;
}
if (qemu_in_vcpu_thread()) {
cpu_stop_current();
if (!kvm_enabled()) {
cpu = first_cpu;
while (cpu) {
cpu->stop = false;
cpu->stopped = true;
cpu = cpu->next_cpu;
}
return;
}
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
cpu = first_cpu;
while (cpu) {
qemu_cpu_kick(cpu);
cpu = cpu->next_cpu;
}
}
}
void pause_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
CPUState *pcpu = ENV_GET_CPU(penv);
pcpu->stop = true;
qemu_cpu_kick(pcpu);
penv = penv->next_cpu;
}
if (qemu_in_vcpu_thread()) {
cpu_stop_current();
if (!kvm_enabled()) {
while (penv) {
CPUState *pcpu = ENV_GET_CPU(penv);
pcpu->stop = 0;
pcpu->stopped = true;
penv = penv->next_cpu;
}
return;
}
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(ENV_GET_CPU(penv));
penv = penv->next_cpu;
}
}
}
void pause_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
if (!qemu_thread_is_self(&io_thread)) {
cpu_stop_current();
if (!kvm_enabled()) {
while (penv) {
penv->stop = 0;
penv->stopped = 1;
penv = penv->next_cpu;
}
return;
}
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
}
}
/* Start an exclusive operation.
Must only be called from outside cpu_exec. */
void start_exclusive(void)
{
CPUState *other_cpu;
int running_cpus;
qemu_mutex_lock(&qemu_cpu_list_lock);
exclusive_idle();
/* Make all other cpus stop executing. */
atomic_set(&pending_cpus, 1);
/* Write pending_cpus before reading other_cpu->running. */
smp_mb();
running_cpus = 0;
CPU_FOREACH(other_cpu) {
if (atomic_read(&other_cpu->running)) {
other_cpu->has_waiter = true;
running_cpus++;
qemu_cpu_kick(other_cpu);
}
}
atomic_set(&pending_cpus, running_cpus + 1);
while (pending_cpus > 1) {
qemu_cond_wait(&exclusive_cond, &qemu_cpu_list_lock);
}
/* Can release mutex, no one will enter another exclusive
* section until end_exclusive resets pending_cpus to 0.
*/
qemu_mutex_unlock(&qemu_cpu_list_lock);
}
void run_on_cpu(CPUState *env, void (*func)(void *data), void *data)
{
struct qemu_work_item wi;
if (qemu_cpu_self(env)) {
func(data);
return;
}
wi.func = func;
wi.data = data;
if (!env->queued_work_first)
env->queued_work_first = &wi;
else
env->queued_work_last->next = &wi;
env->queued_work_last = &wi;
wi.next = NULL;
wi.done = false;
qemu_cpu_kick(env);
while (!wi.done) {
CPUState *self_env = cpu_single_env;
qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex);
cpu_single_env = self_env;
}
}
static void openrisc_timer_cb(void *opaque)
{
OpenRISCCPU *cpu = opaque;
if ((cpu->env.ttmr & TTMR_IE) &&
timer_expired(cpu->env.timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL))) {
CPUState *cs = CPU(cpu);
cpu->env.ttmr |= TTMR_IP;
cs->interrupt_request |= CPU_INTERRUPT_TIMER;
}
switch (cpu->env.ttmr & TTMR_M) {
case TIMER_NONE:
break;
case TIMER_INTR:
or1k_timer->ttcr = 0;
break;
case TIMER_SHOT:
cpu_openrisc_count_stop(cpu);
break;
case TIMER_CONT:
break;
}
cpu_openrisc_timer_update(cpu);
qemu_cpu_kick(CPU(cpu));
}
static void spin_kick(void *data)
{
SpinKick *kick = data;
CPUState *cpu = CPU(kick->cpu);
CPUPPCState *env = &kick->cpu->env;
SpinInfo *curspin = kick->spin;
hwaddr map_size = 64 * 1024 * 1024;
hwaddr map_start;
cpu_synchronize_state(cpu);
stl_p(&curspin->pir, env->spr[SPR_PIR]);
env->nip = ldq_p(&curspin->addr) & (map_size - 1);
env->gpr[3] = ldq_p(&curspin->r3);
env->gpr[4] = 0;
env->gpr[5] = 0;
env->gpr[6] = 0;
env->gpr[7] = map_size;
env->gpr[8] = 0;
env->gpr[9] = 0;
map_start = ldq_p(&curspin->addr) & ~(map_size - 1);
mmubooke_create_initial_mapping(env, 0, map_start, map_size);
cpu->halted = 0;
env->exception_index = -1;
cpu->stopped = false;
qemu_cpu_kick(cpu);
}
void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data)
{
struct qemu_work_item wi;
if (qemu_cpu_is_self(cpu)) {
func(data);
return;
}
wi.func = func;
wi.data = data;
if (cpu->queued_work_first == NULL) {
cpu->queued_work_first = &wi;
} else {
cpu->queued_work_last->next = &wi;
}
cpu->queued_work_last = &wi;
wi.next = NULL;
wi.done = false;
qemu_cpu_kick(cpu);
while (!wi.done) {
CPUArchState *self_env = cpu_single_env;
qemu_cond_wait(&qemu_work_cond, &qemu_global_mutex);
cpu_single_env = self_env;
}
}
/* mask must never be zero, except for A20 change call */
static void tcg_handle_interrupt(CPUState *cpu, int mask)
{
int old_mask;
old_mask = cpu->interrupt_request;
cpu->interrupt_request |= mask;
/*
* If called from iothread context, wake the target cpu in
* case its halted.
*/
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
return;
}
if (use_icount) {
cpu->icount_decr.u16.high = 0xffff;
if (!cpu->can_do_io
&& (mask & ~old_mask) != 0) {
cpu_abort(cpu, "Raised interrupt while not in I/O function");
}
} else {
cpu->tcg_exit_req = 1;
}
}
static void cpu_kick_irq(SPARCCPU *cpu)
{
CPUSPARCState *env = &cpu->env;
env->halted = 0;
cpu_check_irqs(env);
qemu_cpu_kick(CPU(cpu));
}
static void kvm_handle_interrupt(CPUState *env, int mask)
{
env->interrupt_request |= mask;
if (!qemu_cpu_is_self(env)) {
qemu_cpu_kick(env);
}
}
static void whpx_handle_interrupt(CPUState *cpu, int mask)
{
cpu->interrupt_request |= mask;
if (!qemu_cpu_is_self(cpu)) {
qemu_cpu_kick(cpu);
}
}
static void cpu_kick_irq(SPARCCPU *cpu)
{
CPUSPARCState *env = &cpu->env;
CPUState *cs = CPU(cpu);
cs->halted = 0;
cpu_check_irqs(env);
qemu_cpu_kick(cs);
}
void pause_all_vcpus(void)
{
CPUState *penv = first_cpu;
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
while (!all_vcpus_paused()) {
qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
}
void pause_all_vcpus(void)
{
CPUState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
}
void resume_all_vcpus(void)
{
CPUState *penv = first_cpu;
while (penv) {
penv->stop = 0;
penv->stopped = 0;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
static void rtas_start_cpu(PowerPCCPU *cpu_, sPAPRMachineState *spapr,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
target_ulong id, start, r3;
PowerPCCPU *cpu;
if (nargs != 3 || nret != 1) {
rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
return;
}
id = rtas_ld(args, 0);
start = rtas_ld(args, 1);
r3 = rtas_ld(args, 2);
cpu = spapr_find_cpu(id);
if (cpu != NULL) {
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
if (!cs->halted) {
rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
return;
}
/* This will make sure qemu state is up to date with kvm, and
* mark it dirty so our changes get flushed back before the
* new cpu enters */
kvm_cpu_synchronize_state(cs);
env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
/* Enable Power-saving mode Exit Cause exceptions for the new CPU */
env->spr[SPR_LPCR] |= pcc->lpcr_pm;
env->nip = start;
env->gpr[3] = r3;
cs->halted = 0;
spapr_cpu_set_endianness(cpu);
spapr_cpu_update_tb_offset(cpu);
qemu_cpu_kick(cs);
rtas_st(rets, 0, RTAS_OUT_SUCCESS);
return;
}
/* Didn't find a matching cpu */
rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
}
void resume_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, true);
while (penv) {
penv->stop = 0;
penv->stopped = 0;
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
}
void resume_all_vcpus(void)
{
CPUState *penv = first_cpu;
while (penv) {
penv->stop = 0;
penv->stopped = 0;
qemu_thread_signal(penv->thread, SIGUSR1);
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
void resume_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, true);
while (penv) {
CPUState *pcpu = ENV_GET_CPU(penv);
pcpu->stop = false;
pcpu->stopped = false;
qemu_cpu_kick(pcpu);
penv = penv->next_cpu;
}
}
void pause_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
#ifdef CONFIG_S2E_DEBUG
s2e_debug_print("MAIN: pause_all_vcpus kiking cpus\n");
#endif
penv->stop = 1;
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
if (!qemu_thread_is_self(&io_thread)) {
cpu_stop_current();
if (!kvm_enabled()) {
while (penv) {
penv->stop = 0;
penv->stopped = 1;
penv = penv->next_cpu;
}
return;
}
}
while (!all_vcpus_paused()) {
#ifdef CONFIG_S2E_DEBUG
s2e_debug_print("MAIN: pause_all_vcpus waiting for qemu_pause_cond\n");
#endif
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
}
}
void pause_all_vcpus(void)
{
CPUState *penv = first_cpu;
qemu_clock_enable(vm_clock, false);
while (penv) {
penv->stop = 1;
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
penv = first_cpu;
while (penv) {
qemu_cpu_kick(penv);
penv = (CPUState *)penv->next_cpu;
}
}
show_all_ifetch_counters();
tcg_plugin_cpus_stopped();
}
void resume_all_vcpus(void)
{
CPUArchState *penv = first_cpu;
qemu_clock_enable(vm_clock, true);
while (penv) {
penv->stop = 0;
penv->stopped = 0;
#ifdef CONFIG_S2E_DEBUG
s2e_debug_print("MAIN: resume_all_vcpus kicking\n");
#endif
qemu_cpu_kick(penv);
penv = penv->next_cpu;
}
}
static void queue_work_on_cpu(CPUState *cpu, struct qemu_work_item *wi)
{
qemu_mutex_lock(&cpu->work_mutex);
if (cpu->queued_work_first == NULL) {
cpu->queued_work_first = wi;
} else {
cpu->queued_work_last->next = wi;
}
cpu->queued_work_last = wi;
wi->next = NULL;
wi->done = false;
qemu_mutex_unlock(&cpu->work_mutex);
qemu_cpu_kick(cpu);
}
static void rtas_stop_self(PowerPCCPU *cpu, sPAPRMachineState *spapr,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
cs->halted = 1;
qemu_cpu_kick(cs);
/* Disable Power-saving mode Exit Cause exceptions for the CPU.
* This could deliver an interrupt on a dying CPU and crash the
* guest */
env->spr[SPR_LPCR] &= ~pcc->lpcr_pm;
}
static void rtas_start_cpu(PowerPCCPU *cpu_, sPAPREnvironment *spapr,
uint32_t token, uint32_t nargs,
target_ulong args,
uint32_t nret, target_ulong rets)
{
target_ulong id, start, r3;
PowerPCCPU *cpu;
if (nargs != 3 || nret != 1) {
rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
return;
}
id = rtas_ld(args, 0);
start = rtas_ld(args, 1);
r3 = rtas_ld(args, 2);
cpu = ppc_get_vcpu_by_dt_id(id);
if (cpu != NULL) {
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
if (!cs->halted) {
rtas_st(rets, 0, RTAS_OUT_HW_ERROR);
return;
}
/* This will make sure qemu state is up to date with kvm, and
* mark it dirty so our changes get flushed back before the
* new cpu enters */
kvm_cpu_synchronize_state(cs);
env->msr = (1ULL << MSR_SF) | (1ULL << MSR_ME);
env->nip = start;
env->gpr[3] = r3;
cs->halted = 0;
qemu_cpu_kick(cs);
rtas_st(rets, 0, RTAS_OUT_SUCCESS);
return;
}
/* Didn't find a matching cpu */
rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
}
void async_run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data)
{
struct qemu_work_item *wi;
if (qemu_cpu_is_self(cpu)) {
func(data);
return;
}
wi = g_malloc0(sizeof(struct qemu_work_item));
wi->func = func;
wi->data = data;
wi->free = true;
if (cpu->queued_work_first == NULL) {
cpu->queued_work_first = wi;
} else {
cpu->queued_work_last->next = wi;
}
cpu->queued_work_last = wi;
wi->next = NULL;
wi->done = false;
qemu_cpu_kick(cpu);
}
static void cpu_kick_irq(CPUSPARCState *env)
{
env->halted = 0;
cpu_check_irqs(env);
qemu_cpu_kick(env);
}
// cpus.c
void cpu_resume(CPUState *cpu)
{
cpu->stop = false;
cpu->stopped = false;
qemu_cpu_kick(cpu);
}
static void kvm_kick_cpu(void *opaque)
{
PowerPCCPU *cpu = opaque;
qemu_cpu_kick(CPU(cpu));
}
