mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 04:06:46 +00:00
b86f59c715
This will allow us to centralize the registration of the cpus.c module accelerator operations (in accel/accel-softmmu.c), and trigger it automatically using object hierarchy lookup from the new accel_init_interfaces() initialization step, depending just on which accelerators are available in the code. Rename all tcg-cpus.c, kvm-cpus.c, etc to tcg-accel-ops.c, kvm-accel-ops.c, etc, matching the object type names. Signed-off-by: Claudio Fontana <cfontana@suse.de> Message-Id: <20210204163931.7358-18-cfontana@suse.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/*
|
|
* QEMU KVM support
|
|
*
|
|
* Copyright IBM, Corp. 2008
|
|
* Red Hat, Inc. 2008
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
* Glauber Costa <gcosta@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "sysemu/kvm_int.h"
|
|
#include "sysemu/runstate.h"
|
|
#include "sysemu/cpus.h"
|
|
#include "qemu/guest-random.h"
|
|
#include "qapi/error.h"
|
|
|
|
#include "kvm-cpus.h"
|
|
|
|
static void *kvm_vcpu_thread_fn(void *arg)
|
|
{
|
|
CPUState *cpu = arg;
|
|
int r;
|
|
|
|
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;
|
|
|
|
r = kvm_init_vcpu(cpu, &error_fatal);
|
|
kvm_init_cpu_signals(cpu);
|
|
|
|
/* signal CPU creation */
|
|
cpu_thread_signal_created(cpu);
|
|
qemu_guest_random_seed_thread_part2(cpu->random_seed);
|
|
|
|
do {
|
|
if (cpu_can_run(cpu)) {
|
|
r = kvm_cpu_exec(cpu);
|
|
if (r == EXCP_DEBUG) {
|
|
cpu_handle_guest_debug(cpu);
|
|
}
|
|
}
|
|
qemu_wait_io_event(cpu);
|
|
} while (!cpu->unplug || cpu_can_run(cpu));
|
|
|
|
kvm_destroy_vcpu(cpu);
|
|
cpu_thread_signal_destroyed(cpu);
|
|
qemu_mutex_unlock_iothread();
|
|
rcu_unregister_thread();
|
|
return NULL;
|
|
}
|
|
|
|
static void kvm_start_vcpu_thread(CPUState *cpu)
|
|
{
|
|
char thread_name[VCPU_THREAD_NAME_SIZE];
|
|
|
|
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/KVM",
|
|
cpu->cpu_index);
|
|
qemu_thread_create(cpu->thread, thread_name, kvm_vcpu_thread_fn,
|
|
cpu, QEMU_THREAD_JOINABLE);
|
|
}
|
|
|
|
static void kvm_accel_ops_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
|
|
|
|
ops->create_vcpu_thread = kvm_start_vcpu_thread;
|
|
ops->synchronize_post_reset = kvm_cpu_synchronize_post_reset;
|
|
ops->synchronize_post_init = kvm_cpu_synchronize_post_init;
|
|
ops->synchronize_state = kvm_cpu_synchronize_state;
|
|
ops->synchronize_pre_loadvm = kvm_cpu_synchronize_pre_loadvm;
|
|
}
|
|
|
|
static const TypeInfo kvm_accel_ops_type = {
|
|
.name = ACCEL_OPS_NAME("kvm"),
|
|
|
|
.parent = TYPE_ACCEL_OPS,
|
|
.class_init = kvm_accel_ops_class_init,
|
|
.abstract = true,
|
|
};
|
|
|
|
static void kvm_accel_ops_register_types(void)
|
|
{
|
|
type_register_static(&kvm_accel_ops_type);
|
|
}
|
|
type_init(kvm_accel_ops_register_types);
|