diff options
author | Claudio Fontana <cfontana@suse.de> | 2020-07-07 10:21:10 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-05 16:41:22 +0200 |
commit | 1583a389885346208217e8170395624b3aa90480 (patch) | |
tree | 693c50df1924e5b911781d3387856e084db8746a /accel | |
parent | a77dabc33bcc36ec348854f23e89e0de22ca045b (diff) |
cpus: extract out qtest-specific code to accel/qtest
register a "CpusAccel" interface for qtest as well.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel')
-rw-r--r-- | accel/meson.build | 2 | ||||
-rw-r--r-- | accel/qtest/meson.build | 7 | ||||
-rw-r--r-- | accel/qtest/qtest-cpus.c | 91 | ||||
-rw-r--r-- | accel/qtest/qtest-cpus.h | 17 | ||||
-rw-r--r-- | accel/qtest/qtest.c (renamed from accel/qtest.c) | 7 |
5 files changed, 123 insertions, 1 deletions
diff --git a/accel/meson.build b/accel/meson.build index 26c503e480..bb00d0fd13 100644 --- a/accel/meson.build +++ b/accel/meson.build @@ -1,6 +1,6 @@ softmmu_ss.add(files('accel.c')) -specific_ss.add(when: ['CONFIG_SOFTMMU', 'CONFIG_POSIX'], if_true: files('qtest.c')) +subdir('qtest') subdir('kvm') subdir('tcg') subdir('xen') diff --git a/accel/qtest/meson.build b/accel/qtest/meson.build new file mode 100644 index 0000000000..e477cb2ae2 --- /dev/null +++ b/accel/qtest/meson.build @@ -0,0 +1,7 @@ +qtest_ss = ss.source_set() +qtest_ss.add(files( + 'qtest.c', + 'qtest-cpus.c', +)) + +specific_ss.add_all(when: ['CONFIG_SOFTMMU', 'CONFIG_POSIX'], if_true: qtest_ss) diff --git a/accel/qtest/qtest-cpus.c b/accel/qtest/qtest-cpus.c new file mode 100644 index 0000000000..7c5399ed9d --- /dev/null +++ b/accel/qtest/qtest-cpus.c @@ -0,0 +1,91 @@ +/* + * QTest accelerator 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 "qapi/error.h" +#include "qemu/module.h" +#include "qemu/option.h" +#include "qemu/config-file.h" +#include "sysemu/accel.h" +#include "sysemu/qtest.h" +#include "sysemu/cpus.h" +#include "sysemu/cpu-timers.h" +#include "qemu/guest-random.h" +#include "qemu/main-loop.h" +#include "hw/core/cpu.h" + +#include "qtest-cpus.h" + +static void *qtest_cpu_thread_fn(void *arg) +{ +#ifdef _WIN32 + error_report("qtest is not supported under Windows"); + exit(1); +#else + CPUState *cpu = arg; + sigset_t waitset; + 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; + + sigemptyset(&waitset); + sigaddset(&waitset, SIG_IPI); + + /* signal CPU creation */ + cpu_thread_signal_created(cpu); + qemu_guest_random_seed_thread_part2(cpu->random_seed); + + do { + qemu_mutex_unlock_iothread(); + do { + int sig; + r = sigwait(&waitset, &sig); + } while (r == -1 && (errno == EAGAIN || errno == EINTR)); + if (r == -1) { + perror("sigwait"); + exit(1); + } + qemu_mutex_lock_iothread(); + qemu_wait_io_event(cpu); + } while (!cpu->unplug); + + qemu_mutex_unlock_iothread(); + rcu_unregister_thread(); + return NULL; +#endif +} + +static void qtest_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, qtest_cpu_thread_fn, cpu, + QEMU_THREAD_JOINABLE); +} + +const CpusAccel qtest_cpus = { + .create_vcpu_thread = qtest_start_vcpu_thread, + .get_virtual_clock = qtest_get_virtual_clock, +}; diff --git a/accel/qtest/qtest-cpus.h b/accel/qtest/qtest-cpus.h new file mode 100644 index 0000000000..739519a472 --- /dev/null +++ b/accel/qtest/qtest-cpus.h @@ -0,0 +1,17 @@ +/* + * Accelerator CPUS Interface + * + * Copyright 2020 SUSE LLC + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef QTEST_CPUS_H +#define QTEST_CPUS_H + +#include "sysemu/cpus.h" + +extern const CpusAccel qtest_cpus; + +#endif /* QTEST_CPUS_H */ diff --git a/accel/qtest.c b/accel/qtest/qtest.c index 119d0f16a4..537e8b449c 100644 --- a/accel/qtest.c +++ b/accel/qtest/qtest.c @@ -12,6 +12,7 @@ */ #include "qemu/osdep.h" +#include "qemu/rcu.h" #include "qapi/error.h" #include "qemu/module.h" #include "qemu/option.h" @@ -20,9 +21,15 @@ #include "sysemu/qtest.h" #include "sysemu/cpus.h" #include "sysemu/cpu-timers.h" +#include "qemu/guest-random.h" +#include "qemu/main-loop.h" +#include "hw/core/cpu.h" + +#include "qtest-cpus.h" static int qtest_init_accel(MachineState *ms) { + cpus_register_accel(&qtest_cpus); return 0; } |