mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
396f66f99d
'can_do_io' is specific to TCG. It was added to other accelerators in626cf8f4c6("icount: set can_do_io outside TB execution"), then likely copy/pasted in commitc97d6d2cdf("i386: hvf: add code base from Google's QEMU repository"). Having it set in non-TCG code is confusing, so remove it from QTest / HVF / KVM. Fixes:626cf8f4c6("icount: set can_do_io outside TB execution") Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231129205037.16849-1-philmd@linaro.org>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
|
|
* Dummy cpu thread code
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.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/rcu.h"
|
|
#include "sysemu/cpus.h"
|
|
#include "qemu/guest-random.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "hw/core/cpu.h"
|
|
|
|
static void *dummy_cpu_thread_fn(void *arg)
|
|
{
|
|
CPUState *cpu = arg;
|
|
|
|
rcu_register_thread();
|
|
|
|
bql_lock();
|
|
qemu_thread_get_self(cpu->thread);
|
|
cpu->thread_id = qemu_get_thread_id();
|
|
current_cpu = cpu;
|
|
|
|
#ifndef _WIN32
|
|
sigset_t waitset;
|
|
int r;
|
|
|
|
sigemptyset(&waitset);
|
|
sigaddset(&waitset, SIG_IPI);
|
|
#endif
|
|
|
|
/* signal CPU creation */
|
|
cpu_thread_signal_created(cpu);
|
|
qemu_guest_random_seed_thread_part2(cpu->random_seed);
|
|
|
|
do {
|
|
bql_unlock();
|
|
#ifndef _WIN32
|
|
do {
|
|
int sig;
|
|
r = sigwait(&waitset, &sig);
|
|
} while (r == -1 && (errno == EAGAIN || errno == EINTR));
|
|
if (r == -1) {
|
|
perror("sigwait");
|
|
exit(1);
|
|
}
|
|
#else
|
|
qemu_sem_wait(&cpu->sem);
|
|
#endif
|
|
bql_lock();
|
|
qemu_wait_io_event(cpu);
|
|
} while (!cpu->unplug);
|
|
|
|
bql_unlock();
|
|
rcu_unregister_thread();
|
|
return NULL;
|
|
}
|
|
|
|
void dummy_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/DUMMY",
|
|
cpu->cpu_index);
|
|
qemu_thread_create(cpu->thread, thread_name, dummy_cpu_thread_fn, cpu,
|
|
QEMU_THREAD_JOINABLE);
|
|
#ifdef _WIN32
|
|
qemu_sem_init(&cpu->sem, 0);
|
|
#endif
|
|
}
|