#include "qemu/bitmap.h"
#include "qemu/seqlock.h"
#include "qapi-event.h"
+#include "hw/nmi.h"
#ifndef _WIN32
#include "qemu/compatfd.h"
#endif /* CONFIG_LINUX */
static CPUState *next_cpu;
+int64_t max_delay;
+int64_t max_advance;
bool cpu_is_stopped(CPUState *cpu)
{
static TimersState timers_state;
-/* Return the virtual CPU time, based on the instruction counter. */
-static int64_t cpu_get_icount_locked(void)
+int64_t cpu_get_icount_raw(void)
{
int64_t icount;
CPUState *cpu = current_cpu;
icount = timers_state.qemu_icount;
if (cpu) {
if (!cpu_can_do_io(cpu)) {
- fprintf(stderr, "Bad clock read\n");
+ fprintf(stderr, "Bad icount read\n");
+ exit(1);
}
icount -= (cpu->icount_decr.u16.low + cpu->icount_extra);
}
+ return icount;
+}
+
+/* Return the virtual CPU time, based on the instruction counter. */
+static int64_t cpu_get_icount_locked(void)
+{
+ int64_t icount = cpu_get_icount_raw();
return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount);
}
return ti;
}
+/* return the offset between the host clock and virtual CPU clock */
+int64_t cpu_get_clock_offset(void)
+{
+ int64_t ti;
+ unsigned start;
+
+ do {
+ start = seqlock_read_begin(&timers_state.vm_clock_seqlock);
+ ti = timers_state.cpu_clock_offset;
+ if (!timers_state.cpu_ticks_enabled) {
+ ti -= get_clock();
+ }
+ } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start));
+
+ return -ti;
+}
+
/* enable cpu_get_ticks()
* Caller must hold BQL which server as mutex for vm_clock_seqlock.
*/
seqlock_write_lock(&timers_state.vm_clock_seqlock);
if (runstate_is_running()) {
- int64_t clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
+ int64_t clock = cpu_get_clock_locked();
int64_t warp_delta;
warp_delta = clock - vm_clock_warp_start;
* In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too
* far ahead of real time.
*/
- int64_t cur_time = cpu_get_clock_locked();
int64_t cur_icount = cpu_get_icount_locked();
- int64_t delta = cur_time - cur_icount;
+ int64_t delta = clock - cur_icount;
warp_delta = MIN(warp_delta, delta);
}
timers_state.qemu_icount_bias += warp_delta;
}
/* We want to use the earliest deadline from ALL vm_clocks */
- clock = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
+ clock = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL_RT);
deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL);
if (deadline < 0) {
return;
* sleep in icount mode if there is a pending QEMU_CLOCK_VIRTUAL
* timer; rather time could just advance to the next QEMU_CLOCK_VIRTUAL
* event. Instead, we do stop VCPUs and only advance QEMU_CLOCK_VIRTUAL
- * after some e"real" time, (related to the time left until the next
- * event) has passed. The QEMU_CLOCK_REALTIME timer will do this.
+ * after some "real" time, (related to the time left until the next
+ * event) has passed. The QEMU_CLOCK_VIRTUAL_RT clock will do this.
* This avoids that the warps are visible externally; for example,
* you will not be sending network packets continuously instead of
* every 100ms.
}
};
+void cpu_ticks_init(void)
+{
+ seqlock_init(&timers_state.vm_clock_seqlock, NULL);
+ vmstate_register(NULL, 0, &vmstate_timers, &timers_state);
+}
+
void configure_icount(QemuOpts *opts, Error **errp)
{
const char *option;
char *rem_str = NULL;
- seqlock_init(&timers_state.vm_clock_seqlock, NULL);
- vmstate_register(NULL, 0, &vmstate_timers, &timers_state);
option = qemu_opt_get(opts, "shift");
if (!option) {
if (qemu_opt_get(opts, "align") != NULL) {
return;
}
icount_align_option = qemu_opt_get_bool(opts, "align", false);
- icount_warp_timer = timer_new_ns(QEMU_CLOCK_REALTIME,
- icount_warp_rt, NULL);
+ icount_warp_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL_RT,
+ icount_warp_rt, NULL);
if (strcmp(option, "auto") != 0) {
errno = 0;
icount_time_shift = strtol(option, &rem_str, 0);
the virtual time trigger catches emulated time passing too fast.
Realtime triggers occur even when idle, so use them less frequently
than VM triggers. */
- icount_rt_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
- icount_adjust_rt, NULL);
+ icount_rt_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL_RT,
+ icount_adjust_rt, NULL);
timer_mod(icount_rt_timer,
- qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
+ qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000);
icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
icount_adjust_vm, NULL);
timer_mod(icount_vm_timer,
}
}
+void cpu_clean_all_dirty(void)
+{
+ CPUState *cpu;
+
+ CPU_FOREACH(cpu) {
+ cpu_clean_state(cpu);
+ }
+}
+
static int do_vm_stop(RunState state)
{
int ret = 0;
qemu_mutex_lock(&qemu_global_mutex);
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
+ cpu->can_do_io = 1;
current_cpu = cpu;
r = kvm_init_vcpu(cpu);
qemu_mutex_lock_iothread();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
+ cpu->can_do_io = 1;
sigemptyset(&waitset);
sigaddset(&waitset, SIG_IPI);
CPU_FOREACH(cpu) {
cpu->thread_id = qemu_get_thread_id();
cpu->created = true;
+ cpu->can_do_io = 1;
}
qemu_cond_signal(&qemu_cpu_cond);
#elif defined(TARGET_MIPS)
MIPSCPU *mips_cpu = MIPS_CPU(cpu);
CPUMIPSState *env = &mips_cpu->env;
+#elif defined(TARGET_TRICORE)
+ TriCoreCPU *tricore_cpu = TRICORE_CPU(cpu);
+ CPUTriCoreState *env = &tricore_cpu->env;
#endif
cpu_synchronize_state(cpu);
#elif defined(TARGET_MIPS)
info->value->has_PC = true;
info->value->PC = env->active_tc.PC;
+#elif defined(TARGET_TRICORE)
+ info->value->has_PC = true;
+ info->value->PC = env->PC;
#endif
/* XXX: waiting for the qapi to support GSList */
apic_deliver_nmi(cpu->apic_state);
}
}
-#elif defined(TARGET_S390X)
- CPUState *cs;
- S390CPU *cpu;
-
- CPU_FOREACH(cs) {
- cpu = S390_CPU(cs);
- if (cpu->env.cpu_num == monitor_get_cpu_index()) {
- if (s390_cpu_restart(S390_CPU(cs)) == -1) {
- error_set(errp, QERR_UNSUPPORTED);
- return;
- }
- break;
- }
- }
#else
- error_set(errp, QERR_UNSUPPORTED);
+ nmi_monitor_handle(monitor_get_cpu_index(), errp);
#endif
}
+
+void dump_drift_info(FILE *f, fprintf_function cpu_fprintf)
+{
+ if (!use_icount) {
+ return;
+ }
+
+ cpu_fprintf(f, "Host - Guest clock %"PRIi64" ms\n",
+ (cpu_get_clock() - cpu_get_icount())/SCALE_MS);
+ if (icount_align_option) {
+ cpu_fprintf(f, "Max guest delay %"PRIi64" ms\n", -max_delay/SCALE_MS);
+ cpu_fprintf(f, "Max guest advance %"PRIi64" ms\n", max_advance/SCALE_MS);
+ } else {
+ cpu_fprintf(f, "Max guest delay NA\n");
+ cpu_fprintf(f, "Max guest advance NA\n");
+ }
+}
projects / qemu.git / blobdiff