diff options
Diffstat (limited to 'cpus.c')
| -rw-r--r-- | cpus.c | 123 |
1 files changed, 106 insertions, 17 deletions
@@ -37,6 +37,7 @@ #include "sysemu/hw_accel.h" #include "sysemu/kvm.h" #include "sysemu/hax.h" +#include "sysemu/hvf.h" #include "qmp-commands.h" #include "exec/exec-all.h" @@ -900,6 +901,10 @@ void cpu_synchronize_all_states(void) CPU_FOREACH(cpu) { cpu_synchronize_state(cpu); + /* TODO: move to cpu_synchronize_state() */ + if (hvf_enabled()) { + hvf_cpu_synchronize_state(cpu); + } } } @@ -909,6 +914,10 @@ void cpu_synchronize_all_post_reset(void) CPU_FOREACH(cpu) { cpu_synchronize_post_reset(cpu); + /* TODO: move to cpu_synchronize_post_reset() */ + if (hvf_enabled()) { + hvf_cpu_synchronize_post_reset(cpu); + } } } @@ -918,6 +927,10 @@ void cpu_synchronize_all_post_init(void) CPU_FOREACH(cpu) { cpu_synchronize_post_init(cpu); + /* TODO: move to cpu_synchronize_post_init() */ + if (hvf_enabled()) { + hvf_cpu_synchronize_post_init(cpu); + } } } @@ -1057,13 +1070,22 @@ static void qemu_tcg_destroy_vcpu(CPUState *cpu) { } +static void qemu_cpu_stop(CPUState *cpu, bool exit) +{ + g_assert(qemu_cpu_is_self(cpu)); + cpu->stop = false; + cpu->stopped = true; + if (exit) { + cpu_exit(cpu); + } + qemu_cond_broadcast(&qemu_pause_cond); +} + static void qemu_wait_io_event_common(CPUState *cpu) { atomic_mb_set(&cpu->thread_kicked, false); if (cpu->stop) { - cpu->stop = false; - cpu->stopped = true; - qemu_cond_broadcast(&qemu_pause_cond); + qemu_cpu_stop(cpu, false); } process_queued_cpu_work(cpu); } @@ -1098,6 +1120,14 @@ static void qemu_kvm_wait_io_event(CPUState *cpu) qemu_wait_io_event_common(cpu); } +static void qemu_hvf_wait_io_event(CPUState *cpu) +{ + while (cpu_thread_is_idle(cpu)) { + qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex); + } + qemu_wait_io_event_common(cpu); +} + static void *qemu_kvm_cpu_thread_fn(void *arg) { CPUState *cpu = arg; @@ -1435,6 +1465,48 @@ static void *qemu_hax_cpu_thread_fn(void *arg) return NULL; } +/* The HVF-specific vCPU thread function. This one should only run when the host + * CPU supports the VMX "unrestricted guest" feature. */ +static void *qemu_hvf_cpu_thread_fn(void *arg) +{ + CPUState *cpu = arg; + + int r; + + assert(hvf_enabled()); + + rcu_register_thread(); + + qemu_mutex_lock_iothread(); + qemu_thread_get_self(cpu->thread); + + cpu->thread_id = qemu_get_thread_id(); + cpu->can_do_io = 1; + current_cpu = cpu; + + hvf_init_vcpu(cpu); + + /* signal CPU creation */ + cpu->created = true; + qemu_cond_signal(&qemu_cpu_cond); + + do { + if (cpu_can_run(cpu)) { + r = hvf_vcpu_exec(cpu); + if (r == EXCP_DEBUG) { + cpu_handle_guest_debug(cpu); + } + } + qemu_hvf_wait_io_event(cpu); + } while (!cpu->unplug || cpu_can_run(cpu)); + + hvf_vcpu_destroy(cpu); + cpu->created = false; + qemu_cond_signal(&qemu_cpu_cond); + qemu_mutex_unlock_iothread(); + return NULL; +} + #ifdef _WIN32 static void CALLBACK dummy_apc_func(ULONG_PTR unused) { @@ -1610,12 +1682,12 @@ void pause_all_vcpus(void) qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false); CPU_FOREACH(cpu) { - cpu->stop = true; - qemu_cpu_kick(cpu); - } - - if (qemu_in_vcpu_thread()) { - cpu_stop_current(); + if (qemu_cpu_is_self(cpu)) { + qemu_cpu_stop(cpu, true); + } else { + cpu->stop = true; + qemu_cpu_kick(cpu); + } } while (!all_vcpus_paused()) { @@ -1752,6 +1824,27 @@ static void qemu_kvm_start_vcpu(CPUState *cpu) } } +static void qemu_hvf_start_vcpu(CPUState *cpu) +{ + char thread_name[VCPU_THREAD_NAME_SIZE]; + + /* HVF currently does not support TCG, and only runs in + * unrestricted-guest mode. */ + assert(hvf_enabled()); + + cpu->thread = g_malloc0(sizeof(QemuThread)); + cpu->halt_cond = g_malloc0(sizeof(QemuCond)); + qemu_cond_init(cpu->halt_cond); + + snprintf(thread_name, VCPU_THREAD_NAME_SIZE, "CPU %d/HVF", + cpu->cpu_index); + qemu_thread_create(cpu->thread, thread_name, qemu_hvf_cpu_thread_fn, + cpu, QEMU_THREAD_JOINABLE); + while (!cpu->created) { + qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex); + } +} + static void qemu_dummy_start_vcpu(CPUState *cpu) { char thread_name[VCPU_THREAD_NAME_SIZE]; @@ -1778,17 +1871,16 @@ void qemu_init_vcpu(CPUState *cpu) /* If the target cpu hasn't set up any address spaces itself, * give it the default one. */ - AddressSpace *as = g_new0(AddressSpace, 1); - - address_space_init(as, cpu->memory, "cpu-memory"); cpu->num_ases = 1; - cpu_address_space_init(cpu, as, 0); + cpu_address_space_init(cpu, 0, "cpu-memory", cpu->memory); } if (kvm_enabled()) { qemu_kvm_start_vcpu(cpu); } else if (hax_enabled()) { qemu_hax_start_vcpu(cpu); + } else if (hvf_enabled()) { + qemu_hvf_start_vcpu(cpu); } else if (tcg_enabled()) { qemu_tcg_init_vcpu(cpu); } else { @@ -1799,10 +1891,7 @@ void qemu_init_vcpu(CPUState *cpu) void cpu_stop_current(void) { if (current_cpu) { - current_cpu->stop = false; - current_cpu->stopped = true; - cpu_exit(current_cpu); - qemu_cond_broadcast(&qemu_pause_cond); + qemu_cpu_stop(current_cpu, true); } } |