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system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() 

The Big QEMU Lock (BQL) has many names and they are confusing. The
actual QemuMutex variable is called qemu_global_mutex but it's commonly
referred to as the BQL in discussions and some code comments. The
locking APIs, however, are called qemu_mutex_lock_iothread() and
qemu_mutex_unlock_iothread().

The "iothread" name is historic and comes from when the main thread was
split into into KVM vcpu threads and the "iothread" (now called the main
loop thread). I have contributed to the confusion myself by introducing
a separate --object iothread, a separate concept unrelated to the BQL.

The "iothread" name is no longer appropriate for the BQL. Rename the
locking APIs to:
- void bql_lock(void)
- void bql_unlock(void)
- bool bql_locked(void)

There are more APIs with "iothread" in their names. Subsequent patches
will rename them. There are also comments and documentation that will be
updated in later patches.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Acked-by: Fabiano Rosas <farosas@suse.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Peter Xu <peterx@redhat.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Acked-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20240102153529.486531-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2024-01-02 10:35:25 -05:00
parent 897a06c6d7
commit 195801d700
95 changed files with 529 additions and 529 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
accel/accel-blocker.c
View File

@ -41,7 +41,7 @@ void accel_blocker_init(void)
void accel_ioctl_begin(void)
{
if (likely(qemu_mutex_iothread_locked())) {
if (likely(bql_locked())) {
return;
}
@ -51,7 +51,7 @@ void accel_ioctl_begin(void)
void accel_ioctl_end(void)
{
if (likely(qemu_mutex_iothread_locked())) {
if (likely(bql_locked())) {
return;
}
@ -62,7 +62,7 @@ void accel_ioctl_end(void)
void accel_cpu_ioctl_begin(CPUState *cpu)
{
if (unlikely(qemu_mutex_iothread_locked())) {
if (unlikely(bql_locked())) {
return;
}
@ -72,7 +72,7 @@ void accel_cpu_ioctl_begin(CPUState *cpu)
void accel_cpu_ioctl_end(CPUState *cpu)
{
if (unlikely(qemu_mutex_iothread_locked())) {
if (unlikely(bql_locked())) {
return;
}
@ -105,7 +105,7 @@ void accel_ioctl_inhibit_begin(void)
* We allow to inhibit only when holding the BQL, so we can identify
* when an inhibitor wants to issue an ioctl easily.
*/
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
/* Block further invocations of the ioctls outside the BQL. */
CPU_FOREACH(cpu) {

8
accel/dummy-cpus.c
View File

@ -24,7 +24,7 @@ static void *dummy_cpu_thread_fn(void *arg)
rcu_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
cpu->neg.can_do_io = true;
@ -43,7 +43,7 @@ static void *dummy_cpu_thread_fn(void *arg)
qemu_guest_random_seed_thread_part2(cpu->random_seed);
do {
qemu_mutex_unlock_iothread();
bql_unlock();
#ifndef _WIN32
do {
int sig;
@ -56,11 +56,11 @@ static void *dummy_cpu_thread_fn(void *arg)
#else
qemu_sem_wait(&cpu->sem);
#endif
qemu_mutex_lock_iothread();
bql_lock();
qemu_wait_io_event(cpu);
} while (!cpu->unplug);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_unregister_thread();
return NULL;
}

4
accel/hvf/hvf-accel-ops.c
View File

@ -424,7 +424,7 @@ static void *hvf_cpu_thread_fn(void *arg)
rcu_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
@ -449,7 +449,7 @@ static void *hvf_cpu_thread_fn(void *arg)
hvf_vcpu_destroy(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_unregister_thread();
return NULL;
}

4
accel/kvm/kvm-accel-ops.c
View File

@ -33,7 +33,7 @@ static void *kvm_vcpu_thread_fn(void *arg)
rcu_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
cpu->neg.can_do_io = true;
@ -58,7 +58,7 @@ static void *kvm_vcpu_thread_fn(void *arg)
kvm_destroy_vcpu(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_unregister_thread();
return NULL;
}

22
accel/kvm/kvm-all.c
View File

@ -806,7 +806,7 @@ static void kvm_dirty_ring_flush(void)
* should always be with BQL held, serialization is guaranteed.
* However, let's be sure of it.
*/
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
/*
* First make sure to flush the hardware buffers by kicking all
* vcpus out in a synchronous way.
@ -1391,9 +1391,9 @@ static void *kvm_dirty_ring_reaper_thread(void *data)
trace_kvm_dirty_ring_reaper("wakeup");
r->reaper_state = KVM_DIRTY_RING_REAPER_REAPING;
qemu_mutex_lock_iothread();
bql_lock();
kvm_dirty_ring_reap(s, NULL);
qemu_mutex_unlock_iothread();
bql_unlock();
r->reaper_iteration++;
}
@ -2817,7 +2817,7 @@ int kvm_cpu_exec(CPUState *cpu)
return EXCP_HLT;
}
qemu_mutex_unlock_iothread();
bql_unlock();
cpu_exec_start(cpu);
do {
@ -2857,11 +2857,11 @@ int kvm_cpu_exec(CPUState *cpu)
#ifdef KVM_HAVE_MCE_INJECTION
if (unlikely(have_sigbus_pending)) {
qemu_mutex_lock_iothread();
bql_lock();
kvm_arch_on_sigbus_vcpu(cpu, pending_sigbus_code,
pending_sigbus_addr);
have_sigbus_pending = false;
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
@ -2927,7 +2927,7 @@ int kvm_cpu_exec(CPUState *cpu)
* still full. Got kicked by KVM_RESET_DIRTY_RINGS.
*/
trace_kvm_dirty_ring_full(cpu->cpu_index);
qemu_mutex_lock_iothread();
bql_lock();
/*
* We throttle vCPU by making it sleep once it exit from kernel
* due to dirty ring full. In the dirtylimit scenario, reaping
@ -2939,7 +2939,7 @@ int kvm_cpu_exec(CPUState *cpu)
} else {
kvm_dirty_ring_reap(kvm_state, NULL);
}
qemu_mutex_unlock_iothread();
bql_unlock();
dirtylimit_vcpu_execute(cpu);
ret = 0;
break;
@ -2956,9 +2956,9 @@ int kvm_cpu_exec(CPUState *cpu)
break;
case KVM_SYSTEM_EVENT_CRASH:
kvm_cpu_synchronize_state(cpu);
qemu_mutex_lock_iothread();
bql_lock();
qemu_system_guest_panicked(cpu_get_crash_info(cpu));
qemu_mutex_unlock_iothread();
bql_unlock();
ret = 0;
break;
default:
@ -2973,7 +2973,7 @@ int kvm_cpu_exec(CPUState *cpu)
} while (ret == 0);
cpu_exec_end(cpu);
qemu_mutex_lock_iothread();
bql_lock();
if (ret < 0) {
cpu_dump_state(cpu, stderr, CPU_DUMP_CODE);

26
accel/tcg/cpu-exec.c
View File

@ -558,8 +558,8 @@ static void cpu_exec_longjmp_cleanup(CPUState *cpu)
tcg_ctx->gen_tb = NULL;
}
#endif
if (qemu_mutex_iothread_locked()) {
qemu_mutex_unlock_iothread();
if (bql_locked()) {
bql_unlock();
}
assert_no_pages_locked();
}
@ -680,10 +680,10 @@ static inline bool cpu_handle_halt(CPUState *cpu)
#if defined(TARGET_I386)
if (cpu->interrupt_request & CPU_INTERRUPT_POLL) {
X86CPU *x86_cpu = X86_CPU(cpu);
qemu_mutex_lock_iothread();
bql_lock();
apic_poll_irq(x86_cpu->apic_state);
cpu_reset_interrupt(cpu, CPU_INTERRUPT_POLL);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif /* TARGET_I386 */
if (!cpu_has_work(cpu)) {
@ -749,9 +749,9 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
#else
if (replay_exception()) {
CPUClass *cc = CPU_GET_CLASS(cpu);
qemu_mutex_lock_iothread();
bql_lock();
cc->tcg_ops->do_interrupt(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
cpu->exception_index = -1;
if (unlikely(cpu->singlestep_enabled)) {
@ -812,7 +812,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
if (unlikely(qatomic_read(&cpu->interrupt_request))) {
int interrupt_request;
qemu_mutex_lock_iothread();
bql_lock();
interrupt_request = cpu->interrupt_request;
if (unlikely(cpu->singlestep_enabled & SSTEP_NOIRQ)) {
/* Mask out external interrupts for this step. */
@ -821,7 +821,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
if (interrupt_request & CPU_INTERRUPT_DEBUG) {
cpu->interrupt_request &= ~CPU_INTERRUPT_DEBUG;
cpu->exception_index = EXCP_DEBUG;
qemu_mutex_unlock_iothread();
bql_unlock();
return true;
}
#if !defined(CONFIG_USER_ONLY)
@ -832,7 +832,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
cpu->interrupt_request &= ~CPU_INTERRUPT_HALT;
cpu->halted = 1;
cpu->exception_index = EXCP_HLT;
qemu_mutex_unlock_iothread();
bql_unlock();
return true;
}
#if defined(TARGET_I386)
@ -843,14 +843,14 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
cpu_svm_check_intercept_param(env, SVM_EXIT_INIT, 0, 0);
do_cpu_init(x86_cpu);
cpu->exception_index = EXCP_HALTED;
qemu_mutex_unlock_iothread();
bql_unlock();
return true;
}
#else
else if (interrupt_request & CPU_INTERRUPT_RESET) {
replay_interrupt();
cpu_reset(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
return true;
}
#endif /* !TARGET_I386 */
@ -873,7 +873,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
*/
if (unlikely(cpu->singlestep_enabled)) {
cpu->exception_index = EXCP_DEBUG;
qemu_mutex_unlock_iothread();
bql_unlock();
return true;
}
cpu->exception_index = -1;
@ -892,7 +892,7 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
}
/* If we exit via cpu_loop_exit/longjmp it is reset in cpu_exec */
qemu_mutex_unlock_iothread();
bql_unlock();
}
/* Finally, check if we need to exit to the main loop. */

16
accel/tcg/cputlb.c
View File

@ -2030,10 +2030,10 @@ static uint64_t do_ld_mmio_beN(CPUState *cpu, CPUTLBEntryFull *full,
section = io_prepare(&mr_offset, cpu, full->xlat_section, attrs, addr, ra);
mr = section->mr;
qemu_mutex_lock_iothread();
bql_lock();
ret = int_ld_mmio_beN(cpu, full, ret_be, addr, size, mmu_idx,
type, ra, mr, mr_offset);
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}
@ -2054,12 +2054,12 @@ static Int128 do_ld16_mmio_beN(CPUState *cpu, CPUTLBEntryFull *full,
section = io_prepare(&mr_offset, cpu, full->xlat_section, attrs, addr, ra);
mr = section->mr;
qemu_mutex_lock_iothread();
bql_lock();
a = int_ld_mmio_beN(cpu, full, ret_be, addr, size - 8, mmu_idx,
MMU_DATA_LOAD, ra, mr, mr_offset);
b = int_ld_mmio_beN(cpu, full, ret_be, addr + size - 8, 8, mmu_idx,
MMU_DATA_LOAD, ra, mr, mr_offset + size - 8);
qemu_mutex_unlock_iothread();
bql_unlock();
return int128_make128(b, a);
}
@ -2577,10 +2577,10 @@ static uint64_t do_st_mmio_leN(CPUState *cpu, CPUTLBEntryFull *full,
section = io_prepare(&mr_offset, cpu, full->xlat_section, attrs, addr, ra);
mr = section->mr;
qemu_mutex_lock_iothread();
bql_lock();
ret = int_st_mmio_leN(cpu, full, val_le, addr, size, mmu_idx,
ra, mr, mr_offset);
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}
@ -2601,12 +2601,12 @@ static uint64_t do_st16_mmio_leN(CPUState *cpu, CPUTLBEntryFull *full,
section = io_prepare(&mr_offset, cpu, full->xlat_section, attrs, addr, ra);
mr = section->mr;
qemu_mutex_lock_iothread();
bql_lock();
int_st_mmio_leN(cpu, full, int128_getlo(val_le), addr, 8,
mmu_idx, ra, mr, mr_offset);
ret = int_st_mmio_leN(cpu, full, int128_gethi(val_le), addr + 8,
size - 8, mmu_idx, ra, mr, mr_offset + 8);
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}

4
accel/tcg/tcg-accel-ops-icount.c
View File

@ -126,9 +126,9 @@ void icount_prepare_for_run(CPUState *cpu, int64_t cpu_budget)
* We're called without the iothread lock, so must take it while
* we're calling timer handlers.
*/
qemu_mutex_lock_iothread();
bql_lock();
icount_notify_aio_contexts();
qemu_mutex_unlock_iothread();
bql_unlock();
}
}

12
accel/tcg/tcg-accel-ops-mttcg.c
View File

@ -76,7 +76,7 @@ static void *mttcg_cpu_thread_fn(void *arg)
rcu_add_force_rcu_notifier(&force_rcu.notifier);
tcg_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
@ -91,9 +91,9 @@ static void *mttcg_cpu_thread_fn(void *arg)
do {
if (cpu_can_run(cpu)) {
int r;
qemu_mutex_unlock_iothread();
bql_unlock();
r = tcg_cpus_exec(cpu);
qemu_mutex_lock_iothread();
bql_lock();
switch (r) {
case EXCP_DEBUG:
cpu_handle_guest_debug(cpu);
@ -105,9 +105,9 @@ static void *mttcg_cpu_thread_fn(void *arg)
*/
break;
case EXCP_ATOMIC:
qemu_mutex_unlock_iothread();
bql_unlock();
cpu_exec_step_atomic(cpu);
qemu_mutex_lock_iothread();
bql_lock();
default:
/* Ignore everything else? */
break;
@ -119,7 +119,7 @@ static void *mttcg_cpu_thread_fn(void *arg)
} while (!cpu->unplug || cpu_can_run(cpu));
tcg_cpus_destroy(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_remove_force_rcu_notifier(&force_rcu.notifier);
rcu_unregister_thread();
return NULL;

14
accel/tcg/tcg-accel-ops-rr.c
View File

@ -188,7 +188,7 @@ static void *rr_cpu_thread_fn(void *arg)
rcu_add_force_rcu_notifier(&force_rcu);
tcg_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
@ -218,9 +218,9 @@ static void *rr_cpu_thread_fn(void *arg)
/* Only used for icount_enabled() */
int64_t cpu_budget = 0;
qemu_mutex_unlock_iothread();
bql_unlock();
replay_mutex_lock();
qemu_mutex_lock_iothread();
bql_lock();
if (icount_enabled()) {
int cpu_count = rr_cpu_count();
@ -254,7 +254,7 @@ static void *rr_cpu_thread_fn(void *arg)
if (cpu_can_run(cpu)) {
int r;
qemu_mutex_unlock_iothread();
bql_unlock();
if (icount_enabled()) {
icount_prepare_for_run(cpu, cpu_budget);
}
@ -262,15 +262,15 @@ static void *rr_cpu_thread_fn(void *arg)
if (icount_enabled()) {
icount_process_data(cpu);
}
qemu_mutex_lock_iothread();
bql_lock();
if (r == EXCP_DEBUG) {
cpu_handle_guest_debug(cpu);
break;
} else if (r == EXCP_ATOMIC) {
qemu_mutex_unlock_iothread();
bql_unlock();
cpu_exec_step_atomic(cpu);
qemu_mutex_lock_iothread();
bql_lock();
break;
}
} else if (cpu->stop) {

2
accel/tcg/tcg-accel-ops.c
View File

@ -88,7 +88,7 @@ static void tcg_cpu_reset_hold(CPUState *cpu)
/* mask must never be zero, except for A20 change call */
void tcg_handle_interrupt(CPUState *cpu, int mask)
{
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
cpu->interrupt_request |= mask;

2
accel/tcg/translate-all.c
View File

@ -649,7 +649,7 @@ void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
void cpu_interrupt(CPUState *cpu, int mask)
{
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
cpu->interrupt_request |= mask;
qatomic_set(&cpu->neg.icount_decr.u16.high, -1);
}

4
audio/coreaudio.m
View File

@ -547,7 +547,7 @@ static OSStatus handle_voice_change(
{
coreaudioVoiceOut *core = in_client_data;
qemu_mutex_lock_iothread();
bql_lock();
if (core->outputDeviceID) {
fini_out_device(core);
@ -557,7 +557,7 @@ static OSStatus handle_voice_change(
update_device_playback_state(core);
}
qemu_mutex_unlock_iothread();
bql_unlock();
return 0;
}

4
cpu-common.c
View File

@ -351,11 +351,11 @@ void process_queued_cpu_work(CPUState *cpu)
* BQL, so it goes to sleep; start_exclusive() is sleeping too, so
* neither CPU can proceed.
*/
qemu_mutex_unlock_iothread();
bql_unlock();
start_exclusive();
wi->func(cpu, wi->data);
end_exclusive();
qemu_mutex_lock_iothread();
bql_lock();
} else {
wi->func(cpu, wi->data);
}

4
dump/dump.c
View File

@ -108,11 +108,11 @@ static int dump_cleanup(DumpState *s)
s->guest_note = NULL;
if (s->resume) {
if (s->detached) {
qemu_mutex_lock_iothread();
bql_lock();
}
vm_start();
if (s->detached) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
migrate_del_blocker(&dump_migration_blocker);

6
hw/core/cpu-common.c
View File

@ -70,14 +70,14 @@ CPUState *cpu_create(const char *typename)
* BQL here if we need to. cpu_interrupt assumes it is held.*/
void cpu_reset_interrupt(CPUState *cpu, int mask)
{
bool need_lock = !qemu_mutex_iothread_locked();
bool need_lock = !bql_locked();
if (need_lock) {
qemu_mutex_lock_iothread();
bql_lock();
}
cpu->interrupt_request &= ~mask;
if (need_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
}

6
hw/i386/intel_iommu.c
View File

@ -1665,7 +1665,7 @@ static bool vtd_switch_address_space(VTDAddressSpace *as)
{
bool use_iommu, pt;
/* Whether we need to take the BQL on our own */
bool take_bql = !qemu_mutex_iothread_locked();
bool take_bql = !bql_locked();
assert(as);
@ -1683,7 +1683,7 @@ static bool vtd_switch_address_space(VTDAddressSpace *as)
* it. We'd better make sure we have had it already, or, take it.
*/
if (take_bql) {
qemu_mutex_lock_iothread();
bql_lock();
}
/* Turn off first then on the other */
@ -1738,7 +1738,7 @@ static bool vtd_switch_address_space(VTDAddressSpace *as)
}
if (take_bql) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
return use_iommu;

16
hw/i386/kvm/xen_evtchn.c
View File

@ -425,7 +425,7 @@ void xen_evtchn_set_callback_level(int level)
* effect immediately. That just leaves interdomain loopback as the case
* which uses the BH.
*/
if (!qemu_mutex_iothread_locked()) {
if (!bql_locked()) {
qemu_bh_schedule(s->gsi_bh);
return;
}
@ -459,7 +459,7 @@ int xen_evtchn_set_callback_param(uint64_t param)
* We need the BQL because set_callback_pci_intx() may call into PCI code,
* and because we may need to manipulate the old and new GSI levels.
*/
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
qemu_mutex_lock(&s->port_lock);
switch (type) {
@ -1037,7 +1037,7 @@ static int close_port(XenEvtchnState *s, evtchn_port_t port,
XenEvtchnPort *p = &s->port_table[port];
/* Because it *might* be a PIRQ port */
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
switch (p->type) {
case EVTCHNSTAT_closed:
@ -1104,7 +1104,7 @@ int xen_evtchn_soft_reset(void)
return -ENOTSUP;
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
qemu_mutex_lock(&s->port_lock);
@ -1601,7 +1601,7 @@ bool xen_evtchn_set_gsi(int gsi, int level)
XenEvtchnState *s = xen_evtchn_singleton;
int pirq;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
if (!s || gsi < 0 || gsi >= IOAPIC_NUM_PINS) {
return false;
@ -1712,7 +1712,7 @@ void xen_evtchn_snoop_msi(PCIDevice *dev, bool is_msix, unsigned int vector,
return;
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
pirq = msi_pirq_target(addr, data);
@ -1749,7 +1749,7 @@ int xen_evtchn_translate_pirq_msi(struct kvm_irq_routing_entry *route,
return 1; /* Not a PIRQ */
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
pirq = msi_pirq_target(address, data);
if (!pirq || pirq >= s->nr_pirqs) {
@ -1796,7 +1796,7 @@ bool xen_evtchn_deliver_pirq_msi(uint64_t address, uint32_t data)
return false;
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
pirq = msi_pirq_target(address, data);
if (!pirq || pirq >= s->nr_pirqs) {

2
hw/i386/kvm/xen_overlay.c
View File

@ -194,7 +194,7 @@ int xen_overlay_map_shinfo_page(uint64_t gpa)
return -ENOENT;
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
if (s->shinfo_gpa) {
/* If removing shinfo page, turn the kernel magic off first */

2
hw/i386/kvm/xen_xenstore.c
View File

@ -1341,7 +1341,7 @@ static void fire_watch_cb(void *opaque, const char *path, const char *token)
{
XenXenstoreState *s = opaque;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
/*
* If there's a response pending, we obviously can't scribble over

2
hw/intc/arm_gicv3_cpuif.c
View File

@ -934,7 +934,7 @@ void gicv3_cpuif_update(GICv3CPUState *cs)
ARMCPU *cpu = ARM_CPU(cs->cpu);
CPUARMState *env = &cpu->env;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
trace_gicv3_cpuif_update(gicv3_redist_affid(cs), cs->hppi.irq,
cs->hppi.grp, cs->hppi.prio);

18
hw/intc/s390_flic.c
View File

@ -106,7 +106,7 @@ static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id,
QEMUS390FlicIO *cur, *next;
uint8_t isc;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (!(flic->pending & FLIC_PENDING_IO)) {
return 0;
}
@ -223,7 +223,7 @@ uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic)
{
uint32_t tmp;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
g_assert(flic->pending & FLIC_PENDING_SERVICE);
tmp = flic->service_param;
flic->service_param = 0;
@ -238,7 +238,7 @@ QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic, uint64_t cr6)
QEMUS390FlicIO *io;
uint8_t isc;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (!(flic->pending & CR6_TO_PENDING_IO(cr6))) {
return NULL;
}
@ -262,7 +262,7 @@ QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic, uint64_t cr6)
void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic)
{
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
g_assert(flic->pending & FLIC_PENDING_MCHK_CR);
flic->pending &= ~FLIC_PENDING_MCHK_CR;
}
@ -271,7 +271,7 @@ static void qemu_s390_inject_service(S390FLICState *fs, uint32_t parm)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
/* multiplexing is good enough for sclp - kvm does it internally as well */
flic->service_param |= parm;
flic->pending |= FLIC_PENDING_SERVICE;
@ -287,7 +287,7 @@ static void qemu_s390_inject_io(S390FLICState *fs, uint16_t subchannel_id,
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
QEMUS390FlicIO *io;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
io = g_new0(QEMUS390FlicIO, 1);
io->id = subchannel_id;
io->nr = subchannel_nr;
@ -304,7 +304,7 @@ static void qemu_s390_inject_crw_mchk(S390FLICState *fs)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(fs);
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
flic->pending |= FLIC_PENDING_MCHK_CR;
qemu_s390_flic_notify(FLIC_PENDING_MCHK_CR);
@ -330,7 +330,7 @@ bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic)
bool qemu_s390_flic_has_any(QEMUS390FLICState *flic)
{
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
return !!flic->pending;
}
@ -340,7 +340,7 @@ static void qemu_s390_flic_reset(DeviceState *dev)
QEMUS390FlicIO *cur, *next;
int isc;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
flic->simm = 0;
flic->nimm = 0;
flic->pending = 0;

4
hw/misc/edu.c
View File

@ -355,9 +355,9 @@ static void *edu_fact_thread(void *opaque)
smp_mb__after_rmw();
if (qatomic_read(&edu->status) & EDU_STATUS_IRQFACT) {
qemu_mutex_lock_iothread();
bql_lock();
edu_raise_irq(edu, FACT_IRQ);
qemu_mutex_unlock_iothread();
bql_unlock();
}
}

2
hw/misc/imx6_src.c
View File

@ -131,7 +131,7 @@ static void imx6_clear_reset_bit(CPUState *cpu, run_on_cpu_data data)
struct SRCSCRResetInfo *ri = data.host_ptr;
IMX6SRCState *s = ri->s;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
s->regs[SRC_SCR] = deposit32(s->regs[SRC_SCR], ri->reset_bit, 1, 0);
DPRINTF("reg[%s] <= 0x%" PRIx32 "\n",

2
hw/misc/imx7_src.c
View File

@ -136,7 +136,7 @@ static void imx7_clear_reset_bit(CPUState *cpu, run_on_cpu_data data)
struct SRCSCRResetInfo *ri = data.host_ptr;
IMX7SRCState *s = ri->s;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
s->regs[SRC_A7RCR0] = deposit32(s->regs[SRC_A7RCR0], ri->reset_bit, 1, 0);

8
hw/net/xen_nic.c
View File

@ -133,7 +133,7 @@ static bool net_tx_packets(struct XenNetDev *netdev)
void *page;
void *tmpbuf = NULL;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
for (;;) {
rc = netdev->tx_ring.req_cons;
@ -260,7 +260,7 @@ static ssize_t net_rx_packet(NetClientState *nc, const uint8_t *buf, size_t size
RING_IDX rc, rp;
void *page;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
if (xen_device_backend_get_state(&netdev->xendev) != XenbusStateConnected) {
return -1;
@ -354,7 +354,7 @@ static bool xen_netdev_connect(XenDevice *xendev, Error **errp)
XenNetDev *netdev = XEN_NET_DEVICE(xendev);
unsigned int port, rx_copy;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
if (xen_device_frontend_scanf(xendev, "tx-ring-ref", "%u",
&netdev->tx_ring_ref) != 1) {
@ -425,7 +425,7 @@ static void xen_netdev_disconnect(XenDevice *xendev, Error **errp)
trace_xen_netdev_disconnect(netdev->dev);
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
netdev->tx_ring.sring = NULL;
netdev->rx_ring.sring = NULL;

2
hw/ppc/pegasos2.c
View File

@ -515,7 +515,7 @@ static void pegasos2_hypercall(PPCVirtualHypervisor *vhyp, PowerPCCPU *cpu)
CPUPPCState *env = &cpu->env;
/* The TCG path should also be holding the BQL at this point */
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (FIELD_EX64(env->msr, MSR, PR)) {
qemu_log_mask(LOG_GUEST_ERROR, "Hypercall made with MSR[PR]=1\n");

4
hw/ppc/ppc.c
View File

@ -314,7 +314,7 @@ void store_40x_dbcr0(CPUPPCState *env, uint32_t val)
{
PowerPCCPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
switch ((val >> 28) & 0x3) {
case 0x0:
@ -334,7 +334,7 @@ void store_40x_dbcr0(CPUPPCState *env, uint32_t val)
break;
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
/* PowerPC 40x internal IRQ controller */

2
hw/ppc/spapr.c
View File

@ -1304,7 +1304,7 @@ static void emulate_spapr_hypercall(PPCVirtualHypervisor *vhyp,
CPUPPCState *env = &cpu->env;
/* The TCG path should also be holding the BQL at this point */
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
g_assert(!vhyp_cpu_in_nested(cpu));

4
hw/ppc/spapr_rng.c
View File

@ -82,9 +82,9 @@ static target_ulong h_random(PowerPCCPU *cpu, SpaprMachineState *spapr,
while (hrdata.received < 8) {
rng_backend_request_entropy(rngstate->backend, 8 - hrdata.received,
random_recv, &hrdata);
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_sem_wait(&hrdata.sem);
qemu_mutex_lock_iothread();
bql_lock();
}
qemu_sem_destroy(&hrdata.sem);

4
hw/ppc/spapr_softmmu.c
View File

@ -334,7 +334,7 @@ static void *hpt_prepare_thread(void *opaque)
pending->ret = H_NO_MEM;
}
qemu_mutex_lock_iothread();
bql_lock();
if (SPAPR_MACHINE(qdev_get_machine())->pending_hpt == pending) {
/* Ready to go */
@ -344,7 +344,7 @@ static void *hpt_prepare_thread(void *opaque)
free_pending_hpt(pending);
}
qemu_mutex_unlock_iothread();
bql_unlock();
return NULL;
}

20
hw/remote/mpqemu-link.c
View File

@ -33,7 +33,7 @@
*/
bool mpqemu_msg_send(MPQemuMsg *msg, QIOChannel *ioc, Error **errp)
{
bool iolock = qemu_mutex_iothread_locked();
bool drop_bql = bql_locked();
bool iothread = qemu_in_iothread();
struct iovec send[2] = {};
int *fds = NULL;
@ -63,8 +63,8 @@ bool mpqemu_msg_send(MPQemuMsg *msg, QIOChannel *ioc, Error **errp)
* for IOThread case.
* Also skip lock handling while in a co-routine in the main context.
*/
if (iolock && !iothread && !qemu_in_coroutine()) {
qemu_mutex_unlock_iothread();
if (drop_bql && !iothread && !qemu_in_coroutine()) {
bql_unlock();
}
if (!qio_channel_writev_full_all(ioc, send, G_N_ELEMENTS(send),
@ -74,9 +74,9 @@ bool mpqemu_msg_send(MPQemuMsg *msg, QIOChannel *ioc, Error **errp)
trace_mpqemu_send_io_error(msg->cmd, msg->size, nfds);
}
if (iolock && !iothread && !qemu_in_coroutine()) {
if (drop_bql && !iothread && !qemu_in_coroutine()) {
/* See above comment why skip locking here. */
qemu_mutex_lock_iothread();
bql_lock();
}
return ret;
@ -96,7 +96,7 @@ static ssize_t mpqemu_read(QIOChannel *ioc, void *buf, size_t len, int **fds,
size_t *nfds, Error **errp)
{
struct iovec iov = { .iov_base = buf, .iov_len = len };
bool iolock = qemu_mutex_iothread_locked();
bool drop_bql = bql_locked();
bool iothread = qemu_in_iothread();
int ret = -1;
@ -106,14 +106,14 @@ static ssize_t mpqemu_read(QIOChannel *ioc, void *buf, size_t len, int **fds,
*/
assert(qemu_in_coroutine() || !iothread);
if (iolock && !iothread && !qemu_in_coroutine()) {
qemu_mutex_unlock_iothread();
if (drop_bql && !iothread && !qemu_in_coroutine()) {
bql_unlock();
}
ret = qio_channel_readv_full_all_eof(ioc, &iov, 1, fds, nfds, errp);
if (iolock && !iothread && !qemu_in_coroutine()) {
qemu_mutex_lock_iothread();
if (drop_bql && !iothread && !qemu_in_coroutine()) {
bql_lock();
}
return (ret <= 0) ? ret : iov.iov_len;

2
hw/remote/vfio-user-obj.c
View File

@ -400,7 +400,7 @@ static int vfu_object_mr_rw(MemoryRegion *mr, uint8_t *buf, hwaddr offset,
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
release_lock = false;
}

2
hw/s390x/s390-skeys.c
View File

@ -153,7 +153,7 @@ void qmp_dump_skeys(const char *filename, Error **errp)
goto out;
}
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
guest_phys_blocks_init(&guest_phys_blocks);
guest_phys_blocks_append(&guest_phys_blocks);

2
include/block/aio-wait.h
View File

@ -143,7 +143,7 @@ static inline bool in_aio_context_home_thread(AioContext *ctx)
}
if (ctx == qemu_get_aio_context()) {
return qemu_mutex_iothread_locked();
return bql_locked();
} else {
return false;
}

39
include/qemu/main-loop.h
View File

@ -248,19 +248,19 @@ GSource *iohandler_get_g_source(void);
AioContext *iohandler_get_aio_context(void);
/**
* qemu_mutex_iothread_locked: Return lock status of the main loop mutex.
* bql_locked: Return lock status of the Big QEMU Lock (BQL)
*
* The main loop mutex is the coarsest lock in QEMU, and as such it
* The Big QEMU Lock (BQL) is the coarsest lock in QEMU, and as such it
* must always be taken outside other locks. This function helps
* functions take different paths depending on whether the current
* thread is running within the main loop mutex.
* thread is running within the BQL.
*
* This function should never be used in the block layer, because
* unit tests, block layer tools and qemu-storage-daemon do not
* have a BQL.
* Please instead refer to qemu_in_main_thread().
*/
bool qemu_mutex_iothread_locked(void);
bool bql_locked(void);
/**
* qemu_in_main_thread: return whether it's possible to safely access
@ -312,58 +312,57 @@ bool qemu_in_main_thread(void);
} while (0)
/**
* qemu_mutex_lock_iothread: Lock the main loop mutex.
* bql_lock: Lock the Big QEMU Lock (BQL).
*
* This function locks the main loop mutex. The mutex is taken by
* This function locks the Big QEMU Lock (BQL). The lock is taken by
* main() in vl.c and always taken except while waiting on
* external events (such as with select). The mutex should be taken
* external events (such as with select). The lock should be taken
* by threads other than the main loop thread when calling
* qemu_bh_new(), qemu_set_fd_handler() and basically all other
* functions documented in this file.
*
* NOTE: tools currently are single-threaded and qemu_mutex_lock_iothread
* NOTE: tools currently are single-threaded and bql_lock
* is a no-op there.
*/
#define qemu_mutex_lock_iothread() \
qemu_mutex_lock_iothread_impl(__FILE__, __LINE__)
void qemu_mutex_lock_iothread_impl(const char *file, int line);
#define bql_lock() bql_lock_impl(__FILE__, __LINE__)
void bql_lock_impl(const char *file, int line);
/**
* qemu_mutex_unlock_iothread: Unlock the main loop mutex.
* bql_unlock: Unlock the Big QEMU Lock (BQL).
*
* This function unlocks the main loop mutex. The mutex is taken by
* This function unlocks the Big QEMU Lock. The lock is taken by
* main() in vl.c and always taken except while waiting on
* external events (such as with select). The mutex should be unlocked
* external events (such as with select). The lock should be unlocked
* as soon as possible by threads other than the main loop thread,
* because it prevents the main loop from processing callbacks,
* including timers and bottom halves.
*
* NOTE: tools currently are single-threaded and qemu_mutex_unlock_iothread
* NOTE: tools currently are single-threaded and bql_unlock
* is a no-op there.
*/
void qemu_mutex_unlock_iothread(void);
void bql_unlock(void);
/**
* QEMU_IOTHREAD_LOCK_GUARD
*
* Wrap a block of code in a conditional qemu_mutex_{lock,unlock}_iothread.
* Wrap a block of code in a conditional bql_{lock,unlock}.
*/
typedef struct IOThreadLockAuto IOThreadLockAuto;
static inline IOThreadLockAuto *qemu_iothread_auto_lock(const char *file,
int line)
{
if (qemu_mutex_iothread_locked()) {
if (bql_locked()) {
return NULL;
}
qemu_mutex_lock_iothread_impl(file, line);
bql_lock_impl(file, line);
/* Anything non-NULL causes the cleanup function to be called */
return (IOThreadLockAuto *)(uintptr_t)1;
}
static inline void qemu_iothread_auto_unlock(IOThreadLockAuto *l)
{
qemu_mutex_unlock_iothread();
bql_unlock();
}
G_DEFINE_AUTOPTR_CLEANUP_FUNC(IOThreadLockAuto, qemu_iothread_auto_unlock)

2
include/qemu/thread.h
View File

@ -47,7 +47,7 @@ typedef void (*QemuCondWaitFunc)(QemuCond *c, QemuMutex *m, const char *f,
typedef bool (*QemuCondTimedWaitFunc)(QemuCond *c, QemuMutex *m, int ms,
const char *f, int l);
extern QemuMutexLockFunc qemu_bql_mutex_lock_func;
extern QemuMutexLockFunc bql_mutex_lock_func;
extern QemuMutexLockFunc qemu_mutex_lock_func;
extern QemuMutexTrylockFunc qemu_mutex_trylock_func;
extern QemuRecMutexLockFunc qemu_rec_mutex_lock_func;

18
memory_ldst.c.inc
View File

@ -61,7 +61,7 @@ static inline uint32_t glue(address_space_ldl_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
return val;
@ -130,7 +130,7 @@ static inline uint64_t glue(address_space_ldq_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
return val;
@ -186,7 +186,7 @@ uint8_t glue(address_space_ldub, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
return val;
@ -234,7 +234,7 @@ static inline uint16_t glue(address_space_lduw_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
return val;
@ -295,7 +295,7 @@ void glue(address_space_stl_notdirty, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
}
@ -339,7 +339,7 @@ static inline void glue(address_space_stl_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
}
@ -391,7 +391,7 @@ void glue(address_space_stb, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
}
@ -435,7 +435,7 @@ static inline void glue(address_space_stw_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
}
@ -499,7 +499,7 @@ static void glue(address_space_stq_internal, SUFFIX)(ARG1_DECL,
*result = r;
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
RCU_READ_UNLOCK();
}

4
migration/block-dirty-bitmap.c
View File

@ -774,7 +774,7 @@ static void dirty_bitmap_state_pending(void *opaque,
SaveBitmapState *dbms;
uint64_t pending = 0;
qemu_mutex_lock_iothread();
bql_lock();
QSIMPLEQ_FOREACH(dbms, &s->dbms_list, entry) {
uint64_t gran = bdrv_dirty_bitmap_granularity(dbms->bitmap);
@ -784,7 +784,7 @@ static void dirty_bitmap_state_pending(void *opaque,
pending += DIV_ROUND_UP(sectors * BDRV_SECTOR_SIZE, gran);
}
qemu_mutex_unlock_iothread();
bql_unlock();
trace_dirty_bitmap_state_pending(pending);

16
migration/block.c
View File

@ -269,7 +269,7 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds)
int64_t count;
if (bmds->shared_base) {
qemu_mutex_lock_iothread();
bql_lock();
/* Skip unallocated sectors; intentionally treats failure or
* partial sector as an allocated sector */
while (cur_sector < total_sectors &&
@ -280,7 +280,7 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds)
}
cur_sector += count >> BDRV_SECTOR_BITS;
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
if (cur_sector >= total_sectors) {
@ -316,12 +316,12 @@ static int mig_save_device_bulk(QEMUFile *f, BlkMigDevState *bmds)
* I/O runs in the main loop AioContext (see
* qemu_get_current_aio_context()).
*/
qemu_mutex_lock_iothread();
bql_lock();
bdrv_reset_dirty_bitmap(bmds->dirty_bitmap, cur_sector * BDRV_SECTOR_SIZE,
nr_sectors * BDRV_SECTOR_SIZE);
blk->aiocb = blk_aio_preadv(bb, cur_sector * BDRV_SECTOR_SIZE, &blk->qiov,
0, blk_mig_read_cb, blk);
qemu_mutex_unlock_iothread();
bql_unlock();
bmds->cur_sector = cur_sector + nr_sectors;
return (bmds->cur_sector >= total_sectors);
@ -770,9 +770,9 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
/* Always called with iothread lock taken for
* simplicity, block_save_complete also calls it.
*/
qemu_mutex_lock_iothread();
bql_lock();
ret = blk_mig_save_dirty_block(f, 1);
qemu_mutex_unlock_iothread();
bql_unlock();
}
if (ret < 0) {
return ret;
@ -844,9 +844,9 @@ static void block_state_pending(void *opaque, uint64_t *must_precopy,
/* Estimate pending number of bytes to send */
uint64_t pending;
qemu_mutex_lock_iothread();
bql_lock();
pending = get_remaining_dirty();
qemu_mutex_unlock_iothread();
bql_unlock();
blk_mig_lock();
pending += block_mig_state.submitted * BLK_MIG_BLOCK_SIZE +

60
migration/colo.c
View File

@ -420,13 +420,13 @@ static int colo_do_checkpoint_transaction(MigrationState *s,
qio_channel_io_seek(QIO_CHANNEL(bioc), 0, 0, NULL);
bioc->usage = 0;
qemu_mutex_lock_iothread();
bql_lock();
if (failover_get_state() != FAILOVER_STATUS_NONE) {
qemu_mutex_unlock_iothread();
bql_unlock();
goto out;
}
vm_stop_force_state(RUN_STATE_COLO);
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("run", "stop");
/*
* Failover request bh could be called after vm_stop_force_state(),
@ -435,23 +435,23 @@ static int colo_do_checkpoint_transaction(MigrationState *s,
if (failover_get_state() != FAILOVER_STATUS_NONE) {
goto out;
}
qemu_mutex_lock_iothread();
bql_lock();
replication_do_checkpoint_all(&local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
bql_unlock();
goto out;
}
colo_send_message(s->to_dst_file, COLO_MESSAGE_VMSTATE_SEND, &local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
bql_unlock();
goto out;
}
/* Note: device state is saved into buffer */
ret = qemu_save_device_state(fb);
qemu_mutex_unlock_iothread();
bql_unlock();
if (ret < 0) {
goto out;
}
@ -504,9 +504,9 @@ static int colo_do_checkpoint_transaction(MigrationState *s,
ret = 0;
qemu_mutex_lock_iothread();
bql_lock();
vm_start();
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("stop", "run");
out:
@ -557,15 +557,15 @@ static void colo_process_checkpoint(MigrationState *s)
fb = qemu_file_new_output(QIO_CHANNEL(bioc));
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();
bql_lock();
replication_start_all(REPLICATION_MODE_PRIMARY, &local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
bql_unlock();
goto out;
}
vm_start();
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("stop", "run");
timer_mod(s->colo_delay_timer, qemu_clock_get_ms(QEMU_CLOCK_HOST) +
@ -639,14 +639,14 @@ out:
void migrate_start_colo_process(MigrationState *s)
{
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_event_init(&s->colo_checkpoint_event, false);
s->colo_delay_timer = timer_new_ms(QEMU_CLOCK_HOST,
colo_checkpoint_notify, s);
qemu_sem_init(&s->colo_exit_sem, 0);
colo_process_checkpoint(s);
qemu_mutex_lock_iothread();
bql_lock();
}
static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
@ -657,9 +657,9 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
Error *local_err = NULL;
int ret;
qemu_mutex_lock_iothread();
bql_lock();
vm_stop_force_state(RUN_STATE_COLO);
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("run", "stop");
/* FIXME: This is unnecessary for periodic checkpoint mode */
@ -677,10 +677,10 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
return;
}
qemu_mutex_lock_iothread();
bql_lock();
cpu_synchronize_all_states();
ret = qemu_loadvm_state_main(mis->from_src_file, mis);
qemu_mutex_unlock_iothread();
bql_unlock();
if (ret < 0) {
error_setg(errp, "Load VM's live state (ram) error");
@ -719,14 +719,14 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
return;
}
qemu_mutex_lock_iothread();
bql_lock();
vmstate_loading = true;
colo_flush_ram_cache();
ret = qemu_load_device_state(fb);
if (ret < 0) {
error_setg(errp, "COLO: load device state failed");
vmstate_loading = false;
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
@ -734,7 +734,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
if (local_err) {
error_propagate(errp, local_err);
vmstate_loading = false;
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
@ -743,7 +743,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
if (local_err) {
error_propagate(errp, local_err);
vmstate_loading = false;
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
/* Notify all filters of all NIC to do checkpoint */
@ -752,13 +752,13 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
if (local_err) {
error_propagate(errp, local_err);
vmstate_loading = false;
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
vmstate_loading = false;
vm_start();
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("stop", "run");
if (failover_get_state() == FAILOVER_STATUS_RELAUNCH) {
@ -851,14 +851,14 @@ static void *colo_process_incoming_thread(void *opaque)
fb = qemu_file_new_input(QIO_CHANNEL(bioc));
object_unref(OBJECT(bioc));
qemu_mutex_lock_iothread();
bql_lock();
replication_start_all(REPLICATION_MODE_SECONDARY, &local_err);
if (local_err) {
qemu_mutex_unlock_iothread();
bql_unlock();
goto out;
}
vm_start();
qemu_mutex_unlock_iothread();
bql_unlock();
trace_colo_vm_state_change("stop", "run");
colo_send_message(mis->to_src_file, COLO_MESSAGE_CHECKPOINT_READY,
@ -920,7 +920,7 @@ int coroutine_fn colo_incoming_co(void)
Error *local_err = NULL;
QemuThread th;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
if (!migration_incoming_colo_enabled()) {
return 0;
@ -940,10 +940,10 @@ int coroutine_fn colo_incoming_co(void)
qemu_coroutine_yield();
mis->colo_incoming_co = NULL;
qemu_mutex_unlock_iothread();
bql_unlock();
/* Wait checkpoint incoming thread exit before free resource */
qemu_thread_join(&th);
qemu_mutex_lock_iothread();
bql_lock();
/* We hold the global iothread lock, so it is safe here */
colo_release_ram_cache();

12
migration/dirtyrate.c
View File

@ -90,13 +90,13 @@ static int64_t do_calculate_dirtyrate(DirtyPageRecord dirty_pages,
void global_dirty_log_change(unsigned int flag, bool start)
{
qemu_mutex_lock_iothread();
bql_lock();
if (start) {
memory_global_dirty_log_start(flag);
} else {
memory_global_dirty_log_stop(flag);
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
/*
@ -106,12 +106,12 @@ void global_dirty_log_change(unsigned int flag, bool start)
*/
static void global_dirty_log_sync(unsigned int flag, bool one_shot)
{
qemu_mutex_lock_iothread();
bql_lock();
memory_global_dirty_log_sync(false);
if (one_shot) {
memory_global_dirty_log_stop(flag);
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
static DirtyPageRecord *vcpu_dirty_stat_alloc(VcpuStat *stat)
@ -609,7 +609,7 @@ static void calculate_dirtyrate_dirty_bitmap(struct DirtyRateConfig config)
int64_t start_time;
DirtyPageRecord dirty_pages;
qemu_mutex_lock_iothread();
bql_lock();
memory_global_dirty_log_start(GLOBAL_DIRTY_DIRTY_RATE);
/*
@ -626,7 +626,7 @@ static void calculate_dirtyrate_dirty_bitmap(struct DirtyRateConfig config)
* KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE cap is enabled.
*/
dirtyrate_manual_reset_protect();
qemu_mutex_unlock_iothread();
bql_unlock();
record_dirtypages_bitmap(&dirty_pages, true);

52
migration/migration.c
View File

@ -1283,12 +1283,12 @@ static void migrate_fd_cleanup(MigrationState *s)
QEMUFile *tmp;
trace_migrate_fd_cleanup();
qemu_mutex_unlock_iothread();
bql_unlock();
if (s->migration_thread_running) {
qemu_thread_join(&s->thread);
s->migration_thread_running = false;
}
qemu_mutex_lock_iothread();
bql_lock();
multifd_save_cleanup();
qemu_mutex_lock(&s->qemu_file_lock);
@ -2396,7 +2396,7 @@ static int postcopy_start(MigrationState *ms, Error **errp)
}
trace_postcopy_start();
qemu_mutex_lock_iothread();
bql_lock();
trace_postcopy_start_set_run();
migration_downtime_start(ms);
@ -2504,7 +2504,7 @@ static int postcopy_start(MigrationState *ms, Error **errp)
migration_downtime_end(ms);
qemu_mutex_unlock_iothread();
bql_unlock();
if (migrate_postcopy_ram()) {
/*
@ -2545,7 +2545,7 @@ fail:
error_report_err(local_err);
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
return -1;
}
@ -2579,14 +2579,14 @@ static int migration_maybe_pause(MigrationState *s,
* wait for the 'pause_sem' semaphore.
*/
if (s->state != MIGRATION_STATUS_CANCELLING) {
qemu_mutex_unlock_iothread();
bql_unlock();
migrate_set_state(&s->state, *current_active_state,
MIGRATION_STATUS_PRE_SWITCHOVER);
qemu_sem_wait(&s->pause_sem);
migrate_set_state(&s->state, MIGRATION_STATUS_PRE_SWITCHOVER,
new_state);
*current_active_state = new_state;
qemu_mutex_lock_iothread();
bql_lock();
}
return s->state == new_state ? 0 : -EINVAL;
@ -2597,7 +2597,7 @@ static int migration_completion_precopy(MigrationState *s,
{
int ret;
qemu_mutex_lock_iothread();
bql_lock();
migration_downtime_start(s);
s->vm_old_state = runstate_get();
@ -2624,7 +2624,7 @@ static int migration_completion_precopy(MigrationState *s,
ret = qemu_savevm_state_complete_precopy(s->to_dst_file, false,
s->block_inactive);
out_unlock:
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}
@ -2632,9 +2632,9 @@ static void migration_completion_postcopy(MigrationState *s)
{
trace_migration_completion_postcopy_end();
qemu_mutex_lock_iothread();
bql_lock();
qemu_savevm_state_complete_postcopy(s->to_dst_file);
qemu_mutex_unlock_iothread();
bql_unlock();
/*
* Shutdown the postcopy fast path thread. This is only needed when dest
@ -2658,14 +2658,14 @@ static void migration_completion_failed(MigrationState *s,
*/
Error *local_err = NULL;
qemu_mutex_lock_iothread();
bql_lock();
bdrv_activate_all(&local_err);
if (local_err) {
error_report_err(local_err);
} else {
s->block_inactive = false;
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
migrate_set_state(&s->state, current_active_state,
@ -3105,7 +3105,7 @@ static void migration_iteration_finish(MigrationState *s)
/* If we enabled cpu throttling for auto-converge, turn it off. */
cpu_throttle_stop();
qemu_mutex_lock_iothread();
bql_lock();
switch (s->state) {
case MIGRATION_STATUS_COMPLETED:
migration_calculate_complete(s);
@ -3136,7 +3136,7 @@ static void migration_iteration_finish(MigrationState *s)
break;
}
migrate_fd_cleanup_schedule(s);
qemu_mutex_unlock_iothread();
bql_unlock();
}
static void bg_migration_iteration_finish(MigrationState *s)
@ -3148,7 +3148,7 @@ static void bg_migration_iteration_finish(MigrationState *s)
*/
ram_write_tracking_stop();
qemu_mutex_lock_iothread();
bql_lock();
switch (s->state) {
case MIGRATION_STATUS_COMPLETED:
migration_calculate_complete(s);
@ -3167,7 +3167,7 @@ static void bg_migration_iteration_finish(MigrationState *s)
}
migrate_fd_cleanup_schedule(s);
qemu_mutex_unlock_iothread();
bql_unlock();
}
/*
@ -3289,9 +3289,9 @@ static void *migration_thread(void *opaque)
object_ref(OBJECT(s));
update_iteration_initial_status(s);
qemu_mutex_lock_iothread();
bql_lock();
qemu_savevm_state_header(s->to_dst_file);
qemu_mutex_unlock_iothread();
bql_unlock();
/*
* If we opened the return path, we need to make sure dst has it
@ -3319,9 +3319,9 @@ static void *migration_thread(void *opaque)
qemu_savevm_send_colo_enable(s->to_dst_file);
}
qemu_mutex_lock_iothread();
bql_lock();
qemu_savevm_state_setup(s->to_dst_file);
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_savevm_wait_unplug(s, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_ACTIVE);
@ -3432,10 +3432,10 @@ static void *bg_migration_thread(void *opaque)
ram_write_tracking_prepare();
#endif
qemu_mutex_lock_iothread();
bql_lock();
qemu_savevm_state_header(s->to_dst_file);
qemu_savevm_state_setup(s->to_dst_file);
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_savevm_wait_unplug(s, MIGRATION_STATUS_SETUP,
MIGRATION_STATUS_ACTIVE);
@ -3445,7 +3445,7 @@ static void *bg_migration_thread(void *opaque)
trace_migration_thread_setup_complete();
migration_downtime_start(s);
qemu_mutex_lock_iothread();
bql_lock();
s->vm_old_state = runstate_get();
@ -3483,7 +3483,7 @@ static void *bg_migration_thread(void *opaque)
s->vm_start_bh = qemu_bh_new(bg_migration_vm_start_bh, s);
qemu_bh_schedule(s->vm_start_bh);
qemu_mutex_unlock_iothread();
bql_unlock();
while (migration_is_active(s)) {
MigIterateState iter_state = bg_migration_iteration_run(s);
@ -3512,7 +3512,7 @@ fail:
if (early_fail) {
migrate_set_state(&s->state, MIGRATION_STATUS_ACTIVE,
MIGRATION_STATUS_FAILED);
qemu_mutex_unlock_iothread();
bql_unlock();
}
bg_migration_iteration_finish(s);

12
migration/ram.c
View File

@ -2984,9 +2984,9 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
migration_ops = g_malloc0(sizeof(MigrationOps));
migration_ops->ram_save_target_page = ram_save_target_page_legacy;
qemu_mutex_unlock_iothread();
bql_unlock();
ret = multifd_send_sync_main(f);
qemu_mutex_lock_iothread();
bql_lock();
if (ret < 0) {
return ret;
}
@ -3221,11 +3221,11 @@ static void ram_state_pending_exact(void *opaque, uint64_t *must_precopy,
uint64_t remaining_size = rs->migration_dirty_pages * TARGET_PAGE_SIZE;
if (!migration_in_postcopy() && remaining_size < s->threshold_size) {
qemu_mutex_lock_iothread();
bql_lock();
WITH_RCU_READ_LOCK_GUARD() {
migration_bitmap_sync_precopy(rs, false);
}
qemu_mutex_unlock_iothread();
bql_unlock();
remaining_size = rs->migration_dirty_pages * TARGET_PAGE_SIZE;
}
@ -3453,7 +3453,7 @@ void colo_incoming_start_dirty_log(void)
{
RAMBlock *block = NULL;
/* For memory_global_dirty_log_start below. */
qemu_mutex_lock_iothread();
bql_lock();
qemu_mutex_lock_ramlist();
memory_global_dirty_log_sync(false);
@ -3467,7 +3467,7 @@ void colo_incoming_start_dirty_log(void)
}
ram_state->migration_dirty_pages = 0;
qemu_mutex_unlock_ramlist();
qemu_mutex_unlock_iothread();
bql_unlock();
}
/* It is need to hold the global lock to call this helper */

2
replay/replay-internal.c
View File

@ -216,7 +216,7 @@ void replay_mutex_lock(void)
{
if (replay_mode != REPLAY_MODE_NONE) {
unsigned long id;
g_assert(!qemu_mutex_iothread_locked());
g_assert(!bql_locked());
g_assert(!replay_mutex_locked());
qemu_mutex_lock(&lock);
id = mutex_tail++;

8
semihosting/console.c
View File

@ -43,7 +43,7 @@ static SemihostingConsole console;
static int console_can_read(void *opaque)
{
SemihostingConsole *c = opaque;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
return (int)fifo8_num_free(&c->fifo);
}
@ -58,7 +58,7 @@ static void console_wake_up(gpointer data, gpointer user_data)
static void console_read(void *opaque, const uint8_t *buf, int size)
{
SemihostingConsole *c = opaque;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
while (size-- && !fifo8_is_full(&c->fifo)) {
fifo8_push(&c->fifo, *buf++);
}
@ -70,7 +70,7 @@ bool qemu_semihosting_console_ready(void)
{
SemihostingConsole *c = &console;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
return !fifo8_is_empty(&c->fifo);
}
@ -78,7 +78,7 @@ void qemu_semihosting_console_block_until_ready(CPUState *cs)
{
SemihostingConsole *c = &console;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
/* Block if the fifo is completely empty. */
if (fifo8_is_empty(&c->fifo)) {

6
stubs/iothread-lock.c
View File

@ -1,15 +1,15 @@
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
bool qemu_mutex_iothread_locked(void)
bool bql_locked(void)
{
return false;
}
void qemu_mutex_lock_iothread_impl(const char *file, int line)
void bql_lock_impl(const char *file, int line)
{
}
void qemu_mutex_unlock_iothread(void)
void bql_unlock(void)
{
}

4
system/cpu-throttle.c
View File

@ -57,9 +57,9 @@ static void cpu_throttle_thread(CPUState *cpu, run_on_cpu_data opaque)
qemu_cond_timedwait_iothread(cpu->halt_cond,
sleeptime_ns / SCALE_MS);
} else {
qemu_mutex_unlock_iothread();
bql_unlock();
g_usleep(sleeptime_ns / SCALE_US);
qemu_mutex_lock_iothread();
bql_lock();
}
sleeptime_ns = endtime_ns - qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
}

51
system/cpus.c
View File

@ -65,7 +65,8 @@
#endif /* CONFIG_LINUX */
static QemuMutex qemu_global_mutex;
/* The Big QEMU Lock (BQL) */
static QemuMutex bql;
/*
* The chosen accelerator is supposed to register this.
@ -408,14 +409,14 @@ void qemu_init_cpu_loop(void)
qemu_init_sigbus();
qemu_cond_init(&qemu_cpu_cond);
qemu_cond_init(&qemu_pause_cond);
qemu_mutex_init(&qemu_global_mutex);
qemu_mutex_init(&bql);
qemu_thread_get_self(&io_thread);
}
void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data)
{
do_run_on_cpu(cpu, func, data, &qemu_global_mutex);
do_run_on_cpu(cpu, func, data, &bql);
}
static void qemu_cpu_stop(CPUState *cpu, bool exit)
@ -447,7 +448,7 @@ void qemu_wait_io_event(CPUState *cpu)
slept = true;
qemu_plugin_vcpu_idle_cb(cpu);
}
qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
qemu_cond_wait(cpu->halt_cond, &bql);
}
if (slept) {
qemu_plugin_vcpu_resume_cb(cpu);
@ -500,46 +501,46 @@ bool qemu_in_vcpu_thread(void)
return current_cpu && qemu_cpu_is_self(current_cpu);
}
QEMU_DEFINE_STATIC_CO_TLS(bool, iothread_locked)
QEMU_DEFINE_STATIC_CO_TLS(bool, bql_locked)
bool qemu_mutex_iothread_locked(void)
bool bql_locked(void)
{
return get_iothread_locked();
return get_bql_locked();
}
bool qemu_in_main_thread(void)
{
return qemu_mutex_iothread_locked();
return bql_locked();
}
/*
* The BQL is taken from so many places that it is worth profiling the
* callers directly, instead of funneling them all through a single function.
*/
void qemu_mutex_lock_iothread_impl(const char *file, int line)
void bql_lock_impl(const char *file, int line)
{
QemuMutexLockFunc bql_lock = qatomic_read(&qemu_bql_mutex_lock_func);
QemuMutexLockFunc bql_lock_fn = qatomic_read(&bql_mutex_lock_func);
g_assert(!qemu_mutex_iothread_locked());
bql_lock(&qemu_global_mutex, file, line);
set_iothread_locked(true);
g_assert(!bql_locked());
bql_lock_fn(&bql, file, line);
set_bql_locked(true);
}
void qemu_mutex_unlock_iothread(void)
void bql_unlock(void)
{
g_assert(qemu_mutex_iothread_locked());
set_iothread_locked(false);
qemu_mutex_unlock(&qemu_global_mutex);
g_assert(bql_locked());
set_bql_locked(false);
qemu_mutex_unlock(&bql);
}
void qemu_cond_wait_iothread(QemuCond *cond)
{
qemu_cond_wait(cond, &qemu_global_mutex);
qemu_cond_wait(cond, &bql);
}
void qemu_cond_timedwait_iothread(QemuCond *cond, int ms)
{
qemu_cond_timedwait(cond, &qemu_global_mutex, ms);
qemu_cond_timedwait(cond, &bql, ms);
}
/* signal CPU creation */
@ -590,15 +591,15 @@ void pause_all_vcpus(void)
replay_mutex_unlock();
while (!all_vcpus_paused()) {
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
qemu_cond_wait(&qemu_pause_cond, &bql);
CPU_FOREACH(cpu) {
qemu_cpu_kick(cpu);
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
replay_mutex_lock();
qemu_mutex_lock_iothread();
bql_lock();
}
void cpu_resume(CPUState *cpu)
@ -627,9 +628,9 @@ void cpu_remove_sync(CPUState *cpu)
cpu->stop = true;
cpu->unplug = true;
qemu_cpu_kick(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_thread_join(cpu->thread);
qemu_mutex_lock_iothread();
bql_lock();
}
void cpus_register_accel(const AccelOpsClass *ops)
@ -668,7 +669,7 @@ void qemu_init_vcpu(CPUState *cpu)
cpus_accel->create_vcpu_thread(cpu);
while (!cpu->created) {
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
qemu_cond_wait(&qemu_cpu_cond, &bql);
}
}

4
system/dirtylimit.c
View File

@ -148,9 +148,9 @@ void vcpu_dirty_rate_stat_stop(void)
{
qatomic_set(&vcpu_dirty_rate_stat->running, 0);
dirtylimit_state_unlock();
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_thread_join(&vcpu_dirty_rate_stat->thread);
qemu_mutex_lock_iothread();
bql_lock();
dirtylimit_state_lock();
}

2
system/memory.c
View File

@ -1119,7 +1119,7 @@ void memory_region_transaction_commit(void)
AddressSpace *as;
assert(memory_region_transaction_depth);
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
--memory_region_transaction_depth;
if (!memory_region_transaction_depth) {

8
system/physmem.c
View File

@ -2639,8 +2639,8 @@ bool prepare_mmio_access(MemoryRegion *mr)
{
bool release_lock = false;
if (!qemu_mutex_iothread_locked()) {
qemu_mutex_lock_iothread();
if (!bql_locked()) {
bql_lock();
release_lock = true;
}
if (mr->flush_coalesced_mmio) {
@ -2721,7 +2721,7 @@ static MemTxResult flatview_write_continue(FlatView *fv, hwaddr addr,
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
release_lock = false;
}
@ -2799,7 +2799,7 @@ MemTxResult flatview_read_continue(FlatView *fv, hwaddr addr,
}
if (release_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
release_lock = false;
}

2
system/runstate.c
View File

@ -819,7 +819,7 @@ void qemu_init_subsystems(void)
qemu_init_cpu_list();
qemu_init_cpu_loop();
qemu_mutex_lock_iothread();
bql_lock();
atexit(qemu_run_exit_notifiers);

4
system/watchpoint.c
View File

@ -155,9 +155,9 @@ void cpu_check_watchpoint(CPUState *cpu, vaddr addr, vaddr len,
* Now raise the debug interrupt so that it will
* trigger after the current instruction.
*/
qemu_mutex_lock_iothread();
bql_lock();
cpu_interrupt(cpu, CPU_INTERRUPT_DEBUG);
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}

14
target/arm/arm-powerctl.c
View File

@ -88,7 +88,7 @@ static void arm_set_cpu_on_async_work(CPUState *target_cpu_state,
g_free(info);
/* Finally set the power status */
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
target_cpu->power_state = PSCI_ON;
}
@ -99,7 +99,7 @@ int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id,
ARMCPU *target_cpu;
struct CpuOnInfo *info;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
DPRINTF("cpu %" PRId64 " (EL %d, %s) @ 0x%" PRIx64 " with R0 = 0x%" PRIx64
"\n", cpuid, target_el, target_aa64 ? "aarch64" : "aarch32", entry,
@ -196,7 +196,7 @@ static void arm_set_cpu_on_and_reset_async_work(CPUState *target_cpu_state,
target_cpu_state->halted = 0;
/* Finally set the power status */
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
target_cpu->power_state = PSCI_ON;
}
@ -205,7 +205,7 @@ int arm_set_cpu_on_and_reset(uint64_t cpuid)
CPUState *target_cpu_state;
ARMCPU *target_cpu;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
/* Retrieve the cpu we are powering up */
target_cpu_state = arm_get_cpu_by_id(cpuid);
@ -247,7 +247,7 @@ static void arm_set_cpu_off_async_work(CPUState *target_cpu_state,
{
ARMCPU *target_cpu = ARM_CPU(target_cpu_state);
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
target_cpu->power_state = PSCI_OFF;
target_cpu_state->halted = 1;
target_cpu_state->exception_index = EXCP_HLT;
@ -258,7 +258,7 @@ int arm_set_cpu_off(uint64_t cpuid)
CPUState *target_cpu_state;
ARMCPU *target_cpu;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
DPRINTF("cpu %" PRId64 "\n", cpuid);
@ -294,7 +294,7 @@ int arm_reset_cpu(uint64_t cpuid)
CPUState *target_cpu_state;
ARMCPU *target_cpu;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
DPRINTF("cpu %" PRId64 "\n", cpuid);

4
target/arm/helper.c
View File

@ -5851,7 +5851,7 @@ static void do_hcr_write(CPUARMState *env, uint64_t value, uint64_t valid_mask)
* VFIQ are masked unless running at EL0 or EL1, and HCR
* can only be written at EL2.
*/
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
arm_cpu_update_virq(cpu);
arm_cpu_update_vfiq(cpu);
arm_cpu_update_vserr(cpu);
@ -11273,7 +11273,7 @@ void arm_cpu_do_interrupt(CPUState *cs)
* BQL needs to be held for any modification of
* cs->interrupt_request.
*/
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
arm_call_pre_el_change_hook(cpu);

8
target/arm/hvf/hvf.c
View File

@ -1721,9 +1721,9 @@ static void hvf_wait_for_ipi(CPUState *cpu, struct timespec *ts)
* sleeping.
*/
qatomic_set_mb(&cpu->thread_kicked, false);
qemu_mutex_unlock_iothread();
bql_unlock();
pselect(0, 0, 0, 0, ts, &cpu->accel->unblock_ipi_mask);
qemu_mutex_lock_iothread();
bql_lock();
}
static void hvf_wfi(CPUState *cpu)
@ -1824,7 +1824,7 @@ int hvf_vcpu_exec(CPUState *cpu)
flush_cpu_state(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
assert_hvf_ok(hv_vcpu_run(cpu->accel->fd));
/* handle VMEXIT */
@ -1833,7 +1833,7 @@ int hvf_vcpu_exec(CPUState *cpu)
uint32_t ec = syn_get_ec(syndrome);
ret = 0;
qemu_mutex_lock_iothread();
bql_lock();
switch (exit_reason) {
case HV_EXIT_REASON_EXCEPTION:
/* This is the main one, handle below. */

8
target/arm/kvm.c
View File

@ -1250,7 +1250,7 @@ MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
if (run->s.regs.device_irq_level != cpu->device_irq_level) {
switched_level = cpu->device_irq_level ^ run->s.regs.device_irq_level;
qemu_mutex_lock_iothread();
bql_lock();
if (switched_level & KVM_ARM_DEV_EL1_VTIMER) {
qemu_set_irq(cpu->gt_timer_outputs[GTIMER_VIRT],
@ -1279,7 +1279,7 @@ MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
/* We also mark unknown levels as processed to not waste cycles */
cpu->device_irq_level = run->s.regs.device_irq_level;
qemu_mutex_unlock_iothread();
bql_unlock();
}
return MEMTXATTRS_UNSPECIFIED;
@ -1410,9 +1410,9 @@ static bool kvm_arm_handle_debug(ARMCPU *cpu,
env->exception.syndrome = debug_exit->hsr;
env->exception.vaddress = debug_exit->far;
env->exception.target_el = 1;
qemu_mutex_lock_iothread();
bql_lock();
arm_cpu_do_interrupt(cs);
qemu_mutex_unlock_iothread();
bql_unlock();
return false;
}

6
target/arm/ptw.c
View File

@ -772,9 +772,9 @@ static uint64_t arm_casq_ptw(CPUARMState *env, uint64_t old_val,
#if !TCG_OVERSIZED_GUEST
# error "Unexpected configuration"
#endif
bool locked = qemu_mutex_iothread_locked();
bool locked = bql_locked();
if (!locked) {
qemu_mutex_lock_iothread();
bql_lock();
}
if (ptw->out_be) {
cur_val = ldq_be_p(host);
@ -788,7 +788,7 @@ static uint64_t arm_casq_ptw(CPUARMState *env, uint64_t old_val,
}
}
if (!locked) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif

8
target/arm/tcg/helper-a64.c
View File

@ -809,9 +809,9 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc)
goto illegal_return;
}
qemu_mutex_lock_iothread();
bql_lock();
arm_call_pre_el_change_hook(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
if (!return_to_aa64) {
env->aarch64 = false;
@ -876,9 +876,9 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc)
*/
aarch64_sve_change_el(env, cur_el, new_el, return_to_aa64);
qemu_mutex_lock_iothread();
bql_lock();
arm_call_el_change_hook(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
return;

6
target/arm/tcg/m_helper.c
View File

@ -373,8 +373,8 @@ void HELPER(v7m_preserve_fp_state)(CPUARMState *env)
bool ts = is_secure && (env->v7m.fpccr[M_REG_S] & R_V7M_FPCCR_TS_MASK);
bool take_exception;
/* Take the iothread lock as we are going to touch the NVIC */
qemu_mutex_lock_iothread();
/* Take the BQL as we are going to touch the NVIC */
bql_lock();
/* Check the background context had access to the FPU */
if (!v7m_cpacr_pass(env, is_secure, is_priv)) {
@ -428,7 +428,7 @@ void HELPER(v7m_preserve_fp_state)(CPUARMState *env)
take_exception = !stacked_ok &&
armv7m_nvic_can_take_pending_exception(env->nvic);
qemu_mutex_unlock_iothread();
bql_unlock();
if (take_exception) {
raise_exception_ra(env, EXCP_LAZYFP, 0, 1, GETPC());

24
target/arm/tcg/op_helper.c
View File

@ -482,9 +482,9 @@ void HELPER(cpsr_write_eret)(CPUARMState *env, uint32_t val)
{
uint32_t mask;
qemu_mutex_lock_iothread();
bql_lock();
arm_call_pre_el_change_hook(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
mask = aarch32_cpsr_valid_mask(env->features, &env_archcpu(env)->isar);
cpsr_write(env, val, mask, CPSRWriteExceptionReturn);
@ -497,9 +497,9 @@ void HELPER(cpsr_write_eret)(CPUARMState *env, uint32_t val)
env->regs[15] &= (env->thumb ? ~1 : ~3);
arm_rebuild_hflags(env);
qemu_mutex_lock_iothread();
bql_lock();
arm_call_el_change_hook(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
}
/* Access to user mode registers from privileged modes. */
@ -858,9 +858,9 @@ void HELPER(set_cp_reg)(CPUARMState *env, const void *rip, uint32_t value)
const ARMCPRegInfo *ri = rip;
if (ri->type & ARM_CP_IO) {
qemu_mutex_lock_iothread();
bql_lock();
ri->writefn(env, ri, value);
qemu_mutex_unlock_iothread();
bql_unlock();
} else {
ri->writefn(env, ri, value);
}
@ -872,9 +872,9 @@ uint32_t HELPER(get_cp_reg)(CPUARMState *env, const void *rip)
uint32_t res;
if (ri->type & ARM_CP_IO) {
qemu_mutex_lock_iothread();
bql_lock();
res = ri->readfn(env, ri);
qemu_mutex_unlock_iothread();
bql_unlock();
} else {
res = ri->readfn(env, ri);
}
@ -887,9 +887,9 @@ void HELPER(set_cp_reg64)(CPUARMState *env, const void *rip, uint64_t value)
const ARMCPRegInfo *ri = rip;
if (ri->type & ARM_CP_IO) {
qemu_mutex_lock_iothread();
bql_lock();
ri->writefn(env, ri, value);
qemu_mutex_unlock_iothread();
bql_unlock();
} else {
ri->writefn(env, ri, value);
}
@ -901,9 +901,9 @@ uint64_t HELPER(get_cp_reg64)(CPUARMState *env, const void *rip)
uint64_t res;
if (ri->type & ARM_CP_IO) {
qemu_mutex_lock_iothread();
bql_lock();
res = ri->readfn(env, ri);
qemu_mutex_unlock_iothread();
bql_unlock();
} else {
res = ri->readfn(env, ri);
}

2
target/arm/tcg/psci.c
View File

@ -107,7 +107,7 @@ void arm_handle_psci_call(ARMCPU *cpu)
}
target_cpu = ARM_CPU(target_cpu_state);
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
ret = target_cpu->power_state;
break;
default:

8
target/hppa/int_helper.c
View File

@ -84,17 +84,17 @@ void hppa_cpu_alarm_timer(void *opaque)
void HELPER(write_eirr)(CPUHPPAState *env, target_ulong val)
{
env->cr[CR_EIRR] &= ~val;
qemu_mutex_lock_iothread();
bql_lock();
eval_interrupt(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(write_eiem)(CPUHPPAState *env, target_ulong val)
{
env->cr[CR_EIEM] = val;
qemu_mutex_lock_iothread();
bql_lock();
eval_interrupt(env_archcpu(env));
qemu_mutex_unlock_iothread();
bql_unlock();
}
void hppa_cpu_do_interrupt(CPUState *cs)

2
target/i386/hvf/README.md
View File

@ -4,4 +4,4 @@ These sources (and ../hvf-all.c) are adapted from Veertu Inc's vdhh (Veertu Desk
1. Adapt to our current QEMU's `CPUState` structure and `address_space_rw` API; many struct members have been moved around (emulated x86 state, xsave_buf) due to historical differences + QEMU needing to handle more emulation targets.
2. Removal of `apic_page` and hyperv-related functionality.
3. More relaxed use of `qemu_mutex_lock_iothread`.
3. More relaxed use of `bql_lock`.

6
target/i386/hvf/hvf.c
View File

@ -429,9 +429,9 @@ int hvf_vcpu_exec(CPUState *cpu)
}
vmx_update_tpr(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
if (!cpu_is_bsp(X86_CPU(cpu)) && cpu->halted) {
qemu_mutex_lock_iothread();
bql_lock();
return EXCP_HLT;
}
@ -450,7 +450,7 @@ int hvf_vcpu_exec(CPUState *cpu)
rip = rreg(cpu->accel->fd, HV_X86_RIP);
env->eflags = rreg(cpu->accel->fd, HV_X86_RFLAGS);
qemu_mutex_lock_iothread();
bql_lock();
update_apic_tpr(cpu);
current_cpu = cpu;

4
target/i386/kvm/hyperv.c
View File

@ -45,9 +45,9 @@ void hyperv_x86_synic_update(X86CPU *cpu)
static void async_synic_update(CPUState *cs, run_on_cpu_data data)
{
qemu_mutex_lock_iothread();
bql_lock();
hyperv_x86_synic_update(X86_CPU(cs));
qemu_mutex_unlock_iothread();
bql_unlock();
}
int kvm_hv_handle_exit(X86CPU *cpu, struct kvm_hyperv_exit *exit)

28
target/i386/kvm/kvm.c
View File

@ -4713,9 +4713,9 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
/* Inject NMI */
if (cpu->interrupt_request & (CPU_INTERRUPT_NMI | CPU_INTERRUPT_SMI)) {
if (cpu->interrupt_request & CPU_INTERRUPT_NMI) {
qemu_mutex_lock_iothread();
bql_lock();
cpu->interrupt_request &= ~CPU_INTERRUPT_NMI;
qemu_mutex_unlock_iothread();
bql_unlock();
DPRINTF("injected NMI\n");
ret = kvm_vcpu_ioctl(cpu, KVM_NMI);
if (ret < 0) {
@ -4724,9 +4724,9 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
}
}
if (cpu->interrupt_request & CPU_INTERRUPT_SMI) {
qemu_mutex_lock_iothread();
bql_lock();
cpu->interrupt_request &= ~CPU_INTERRUPT_SMI;
qemu_mutex_unlock_iothread();
bql_unlock();
DPRINTF("injected SMI\n");
ret = kvm_vcpu_ioctl(cpu, KVM_SMI);
if (ret < 0) {
@ -4737,7 +4737,7 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
}
if (!kvm_pic_in_kernel()) {
qemu_mutex_lock_iothread();
bql_lock();
}
/* Force the VCPU out of its inner loop to process any INIT requests
@ -4790,7 +4790,7 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
DPRINTF("setting tpr\n");
run->cr8 = cpu_get_apic_tpr(x86_cpu->apic_state);
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
@ -4838,12 +4838,12 @@ MemTxAttrs kvm_arch_post_run(CPUState *cpu, struct kvm_run *run)
/* We need to protect the apic state against concurrent accesses from
* different threads in case the userspace irqchip is used. */
if (!kvm_irqchip_in_kernel()) {
qemu_mutex_lock_iothread();
bql_lock();
}
cpu_set_apic_tpr(x86_cpu->apic_state, run->cr8);
cpu_set_apic_base(x86_cpu->apic_state, run->apic_base);
if (!kvm_irqchip_in_kernel()) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
return cpu_get_mem_attrs(env);
}
@ -5277,17 +5277,17 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
switch (run->exit_reason) {
case KVM_EXIT_HLT:
DPRINTF("handle_hlt\n");
qemu_mutex_lock_iothread();
bql_lock();
ret = kvm_handle_halt(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
break;
case KVM_EXIT_SET_TPR:
ret = 0;
break;
case KVM_EXIT_TPR_ACCESS:
qemu_mutex_lock_iothread();
bql_lock();
ret = kvm_handle_tpr_access(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
break;
case KVM_EXIT_FAIL_ENTRY:
code = run->fail_entry.hardware_entry_failure_reason;
@ -5313,9 +5313,9 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
break;
case KVM_EXIT_DEBUG:
DPRINTF("kvm_exit_debug\n");
qemu_mutex_lock_iothread();
bql_lock();
ret = kvm_handle_debug(cpu, &run->debug.arch);
qemu_mutex_unlock_iothread();
bql_unlock();
break;
case KVM_EXIT_HYPERV:
ret = kvm_hv_handle_exit(cpu, &run->hyperv);

14
target/i386/kvm/xen-emu.c
View File

@ -403,7 +403,7 @@ void kvm_xen_maybe_deassert_callback(CPUState *cs)
/* If the evtchn_upcall_pending flag is cleared, turn the GSI off. */
if (!vi->evtchn_upcall_pending) {
qemu_mutex_lock_iothread();
bql_lock();
/*
* Check again now we have the lock, because it may have been
* asserted in the interim. And we don't want to take the lock
@ -413,7 +413,7 @@ void kvm_xen_maybe_deassert_callback(CPUState *cs)
X86_CPU(cs)->env.xen_callback_asserted = false;
xen_evtchn_set_callback_level(0);
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
@ -773,9 +773,9 @@ static bool handle_set_param(struct kvm_xen_exit *exit, X86CPU *cpu,
switch (hp.index) {
case HVM_PARAM_CALLBACK_IRQ:
qemu_mutex_lock_iothread();
bql_lock();
err = xen_evtchn_set_callback_param(hp.value);
qemu_mutex_unlock_iothread();
bql_unlock();
xen_set_long_mode(exit->u.hcall.longmode);
break;
default:
@ -1408,7 +1408,7 @@ int kvm_xen_soft_reset(void)
CPUState *cpu;
int err;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
trace_kvm_xen_soft_reset();
@ -1481,9 +1481,9 @@ static int schedop_shutdown(CPUState *cs, uint64_t arg)
break;
case SHUTDOWN_soft_reset:
qemu_mutex_lock_iothread();
bql_lock();
ret = kvm_xen_soft_reset();
qemu_mutex_unlock_iothread();
bql_unlock();
break;
default:

4
target/i386/nvmm/nvmm-accel-ops.c
View File

@ -25,7 +25,7 @@ static void *qemu_nvmm_cpu_thread_fn(void *arg)
rcu_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
current_cpu = cpu;
@ -55,7 +55,7 @@ static void *qemu_nvmm_cpu_thread_fn(void *arg)
nvmm_destroy_vcpu(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_unregister_thread();
return NULL;
}

20
target/i386/nvmm/nvmm-all.c
View File

@ -399,7 +399,7 @@ nvmm_vcpu_pre_run(CPUState *cpu)
uint8_t tpr;
int ret;
qemu_mutex_lock_iothread();
bql_lock();
tpr = cpu_get_apic_tpr(x86_cpu->apic_state);
if (tpr != qcpu->tpr) {
@ -462,7 +462,7 @@ nvmm_vcpu_pre_run(CPUState *cpu)
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
/*
@ -485,9 +485,9 @@ nvmm_vcpu_post_run(CPUState *cpu, struct nvmm_vcpu_exit *exit)
tpr = exit->exitstate.cr8;
if (qcpu->tpr != tpr) {
qcpu->tpr = tpr;
qemu_mutex_lock_iothread();
bql_lock();
cpu_set_apic_tpr(x86_cpu->apic_state, qcpu->tpr);
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
@ -648,7 +648,7 @@ nvmm_handle_halted(struct nvmm_machine *mach, CPUState *cpu,
CPUX86State *env = cpu_env(cpu);
int ret = 0;
qemu_mutex_lock_iothread();
bql_lock();
if (!((cpu->interrupt_request & CPU_INTERRUPT_HARD) &&
(env->eflags & IF_MASK)) &&
@ -658,7 +658,7 @@ nvmm_handle_halted(struct nvmm_machine *mach, CPUState *cpu,
ret = 1;
}
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}
@ -721,7 +721,7 @@ nvmm_vcpu_loop(CPUState *cpu)
return 0;
}
qemu_mutex_unlock_iothread();
bql_unlock();
cpu_exec_start(cpu);
/*
@ -806,16 +806,16 @@ nvmm_vcpu_loop(CPUState *cpu)
error_report("NVMM: Unexpected VM exit code 0x%lx [hw=0x%lx]",
exit->reason, exit->u.inv.hwcode);
nvmm_get_registers(cpu);
qemu_mutex_lock_iothread();
bql_lock();
qemu_system_guest_panicked(cpu_get_crash_info(cpu));
qemu_mutex_unlock_iothread();
bql_unlock();
ret = -1;
break;
}
} while (ret == 0);
cpu_exec_end(cpu);
qemu_mutex_lock_iothread();
bql_lock();
qatomic_set(&cpu->exit_request, false);

6
target/i386/tcg/sysemu/fpu_helper.c
View File

@ -32,9 +32,9 @@ void x86_register_ferr_irq(qemu_irq irq)
void fpu_check_raise_ferr_irq(CPUX86State *env)
{
if (ferr_irq && !(env->hflags2 & HF2_IGNNE_MASK)) {
qemu_mutex_lock_iothread();
bql_lock();
qemu_irq_raise(ferr_irq);
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
}
@ -49,7 +49,7 @@ void cpu_set_ignne(void)
{
CPUX86State *env = &X86_CPU(first_cpu)->env;
assert(qemu_mutex_iothread_locked());
assert(bql_locked());
env->hflags2 |= HF2_IGNNE_MASK;
/*

4
target/i386/tcg/sysemu/misc_helper.c
View File

@ -118,9 +118,9 @@ void helper_write_crN(CPUX86State *env, int reg, target_ulong t0)
break;
case 8:
if (!(env->hflags2 & HF2_VINTR_MASK)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_set_apic_tpr(env_archcpu(env)->apic_state, t0);
qemu_mutex_unlock_iothread();
bql_unlock();
}
env->int_ctl = (env->int_ctl & ~V_TPR_MASK) | (t0 & V_TPR_MASK);

4
target/i386/whpx/whpx-accel-ops.c
View File

@ -25,7 +25,7 @@ static void *whpx_cpu_thread_fn(void *arg)
rcu_register_thread();
qemu_mutex_lock_iothread();
bql_lock();
qemu_thread_get_self(cpu->thread);
cpu->thread_id = qemu_get_thread_id();
current_cpu = cpu;
@ -55,7 +55,7 @@ static void *whpx_cpu_thread_fn(void *arg)
whpx_destroy_vcpu(cpu);
cpu_thread_signal_destroyed(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
rcu_unregister_thread();
return NULL;
}

24
target/i386/whpx/whpx-all.c
View File

@ -1324,7 +1324,7 @@ static int whpx_first_vcpu_starting(CPUState *cpu)
struct whpx_state *whpx = &whpx_global;
HRESULT hr;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (!QTAILQ_EMPTY(&cpu->breakpoints) ||
(whpx->breakpoints.breakpoints &&
@ -1442,7 +1442,7 @@ static int whpx_handle_halt(CPUState *cpu)
CPUX86State *env = cpu_env(cpu);
int ret = 0;
qemu_mutex_lock_iothread();
bql_lock();
if (!((cpu->interrupt_request & CPU_INTERRUPT_HARD) &&
(env->eflags & IF_MASK)) &&
!(cpu->interrupt_request & CPU_INTERRUPT_NMI)) {
@ -1450,7 +1450,7 @@ static int whpx_handle_halt(CPUState *cpu)
cpu->halted = true;
ret = 1;
}
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}
@ -1472,7 +1472,7 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
memset(&new_int, 0, sizeof(new_int));
memset(reg_values, 0, sizeof(reg_values));
qemu_mutex_lock_iothread();
bql_lock();
/* Inject NMI */
if (!vcpu->interruption_pending &&
@ -1563,7 +1563,7 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
reg_count += 1;
}
qemu_mutex_unlock_iothread();
bql_unlock();
vcpu->ready_for_pic_interrupt = false;
if (reg_count) {
@ -1590,9 +1590,9 @@ static void whpx_vcpu_post_run(CPUState *cpu)
uint64_t tpr = vcpu->exit_ctx.VpContext.Cr8;
if (vcpu->tpr != tpr) {
vcpu->tpr = tpr;
qemu_mutex_lock_iothread();
bql_lock();
cpu_set_apic_tpr(x86_cpu->apic_state, whpx_cr8_to_apic_tpr(vcpu->tpr));
qemu_mutex_unlock_iothread();
bql_unlock();
}
vcpu->interruption_pending =
@ -1652,7 +1652,7 @@ static int whpx_vcpu_run(CPUState *cpu)
WhpxStepMode exclusive_step_mode = WHPX_STEP_NONE;
int ret;
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (whpx->running_cpus++ == 0) {
/* Insert breakpoints into memory, update exception exit bitmap. */
@ -1690,7 +1690,7 @@ static int whpx_vcpu_run(CPUState *cpu)
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
if (exclusive_step_mode != WHPX_STEP_NONE) {
start_exclusive();
@ -2028,9 +2028,9 @@ static int whpx_vcpu_run(CPUState *cpu)
error_report("WHPX: Unexpected VP exit code %d",
vcpu->exit_ctx.ExitReason);
whpx_get_registers(cpu);
qemu_mutex_lock_iothread();
bql_lock();
qemu_system_guest_panicked(cpu_get_crash_info(cpu));
qemu_mutex_unlock_iothread();
bql_unlock();
break;
}
@ -2055,7 +2055,7 @@ static int whpx_vcpu_run(CPUState *cpu)
cpu_exec_end(cpu);
}
qemu_mutex_lock_iothread();
bql_lock();
current_cpu = cpu;
if (--whpx->running_cpus == 0) {

4
target/loongarch/tcg/csr_helper.c
View File

@ -89,9 +89,9 @@ target_ulong helper_csrwr_ticlr(CPULoongArchState *env, target_ulong val)
int64_t old_v = 0;
if (val & 0x1) {
qemu_mutex_lock_iothread();
bql_lock();
loongarch_cpu_set_irq(cpu, IRQ_TIMER, 0);
qemu_mutex_unlock_iothread();
bql_unlock();
}
return old_v;
}

4
target/mips/kvm.c
View File

@ -138,7 +138,7 @@ void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
int r;
struct kvm_mips_interrupt intr;
qemu_mutex_lock_iothread();
bql_lock();
if ((cs->interrupt_request & CPU_INTERRUPT_HARD) &&
cpu_mips_io_interrupts_pending(cpu)) {
@ -151,7 +151,7 @@ void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)

4
target/mips/tcg/sysemu/cp0_helper.c
View File

@ -59,9 +59,9 @@ static inline void mips_vpe_wake(MIPSCPU *c)
* because there might be other conditions that state that c should
* be sleeping.
*/
qemu_mutex_lock_iothread();
bql_lock();
cpu_interrupt(CPU(c), CPU_INTERRUPT_WAKE);
qemu_mutex_unlock_iothread();
bql_unlock();
}
static inline void mips_vpe_sleep(MIPSCPU *cpu)

16
target/openrisc/sys_helper.c
View File

@ -160,20 +160,20 @@ void HELPER(mtspr)(CPUOpenRISCState *env, target_ulong spr, target_ulong rb)
break;
case TO_SPR(9, 0): /* PICMR */
env->picmr = rb;
qemu_mutex_lock_iothread();
bql_lock();
if (env->picsr & env->picmr) {
cpu_interrupt(cs, CPU_INTERRUPT_HARD);
} else {
cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
}
qemu_mutex_unlock_iothread();
bql_unlock();
break;
case TO_SPR(9, 2): /* PICSR */
env->picsr &= ~rb;
break;
case TO_SPR(10, 0): /* TTMR */
{
qemu_mutex_lock_iothread();
bql_lock();
if ((env->ttmr & TTMR_M) ^ (rb & TTMR_M)) {
switch (rb & TTMR_M) {
case TIMER_NONE:
@ -198,15 +198,15 @@ void HELPER(mtspr)(CPUOpenRISCState *env, target_ulong spr, target_ulong rb)
cs->interrupt_request &= ~CPU_INTERRUPT_TIMER;
}
cpu_openrisc_timer_update(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
}
break;
case TO_SPR(10, 1): /* TTCR */
qemu_mutex_lock_iothread();
bql_lock();
cpu_openrisc_count_set(cpu, rb);
cpu_openrisc_timer_update(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
break;
}
#endif
@ -347,9 +347,9 @@ target_ulong HELPER(mfspr)(CPUOpenRISCState *env, target_ulong rd,
return env->ttmr;
case TO_SPR(10, 1): /* TTCR */
qemu_mutex_lock_iothread();
bql_lock();
cpu_openrisc_count_update(cpu);
qemu_mutex_unlock_iothread();
bql_unlock();
return cpu_openrisc_count_get(cpu);
}
#endif

12
target/ppc/excp_helper.c
View File

@ -3056,7 +3056,7 @@ void helper_msgsnd(target_ulong rb)
return;
}
qemu_mutex_lock_iothread();
bql_lock();
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *cenv = &cpu->env;
@ -3065,7 +3065,7 @@ void helper_msgsnd(target_ulong rb)
ppc_set_irq(cpu, irq, 1);
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
/* Server Processor Control */
@ -3093,7 +3093,7 @@ static void book3s_msgsnd_common(int pir, int irq)
{
CPUState *cs;
qemu_mutex_lock_iothread();
bql_lock();
CPU_FOREACH(cs) {
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *cenv = &cpu->env;
@ -3103,7 +3103,7 @@ static void book3s_msgsnd_common(int pir, int irq)
ppc_set_irq(cpu, irq, 1);
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
void helper_book3s_msgsnd(target_ulong rb)
@ -3157,14 +3157,14 @@ void helper_book3s_msgsndp(CPUPPCState *env, target_ulong rb)
}
/* Does iothread need to be locked for walking CPU list? */
qemu_mutex_lock_iothread();
bql_lock();
THREAD_SIBLING_FOREACH(cs, ccs) {
PowerPCCPU *ccpu = POWERPC_CPU(ccs);
uint32_t thread_id = ppc_cpu_tir(ccpu);
if (ttir == thread_id) {
ppc_set_irq(ccpu, PPC_INTERRUPT_DOORBELL, 1);
qemu_mutex_unlock_iothread();
bql_unlock();
return;
}
}

4
target/ppc/kvm.c
View File

@ -1656,7 +1656,7 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
CPUPPCState *env = &cpu->env;
int ret;
qemu_mutex_lock_iothread();
bql_lock();
switch (run->exit_reason) {
case KVM_EXIT_DCR:
@ -1715,7 +1715,7 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
break;
}
qemu_mutex_unlock_iothread();
bql_unlock();
return ret;
}

8
target/ppc/misc_helper.c
View File

@ -238,7 +238,7 @@ target_ulong helper_load_dpdes(CPUPPCState *env)
return dpdes;
}
qemu_mutex_lock_iothread();
bql_lock();
THREAD_SIBLING_FOREACH(cs, ccs) {
PowerPCCPU *ccpu = POWERPC_CPU(ccs);
CPUPPCState *cenv = &ccpu->env;
@ -248,7 +248,7 @@ target_ulong helper_load_dpdes(CPUPPCState *env)
dpdes |= (0x1 << thread_id);
}
}
qemu_mutex_unlock_iothread();
bql_unlock();
return dpdes;
}
@ -278,14 +278,14 @@ void helper_store_dpdes(CPUPPCState *env, target_ulong val)
}
/* Does iothread need to be locked for walking CPU list? */
qemu_mutex_lock_iothread();
bql_lock();
THREAD_SIBLING_FOREACH(cs, ccs) {
PowerPCCPU *ccpu = POWERPC_CPU(ccs);
uint32_t thread_id = ppc_cpu_tir(ccpu);
ppc_set_irq(cpu, PPC_INTERRUPT_DOORBELL, val & (0x1 << thread_id));
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif /* defined(TARGET_PPC64) */

8
target/ppc/timebase_helper.c
View File

@ -173,9 +173,9 @@ target_ulong helper_load_dcr(CPUPPCState *env, target_ulong dcrn)
} else {
int ret;
qemu_mutex_lock_iothread();
bql_lock();
ret = ppc_dcr_read(env->dcr_env, (uint32_t)dcrn, &val);
qemu_mutex_unlock_iothread();
bql_unlock();
if (unlikely(ret != 0)) {
qemu_log_mask(LOG_GUEST_ERROR, "DCR read error %d %03x\n",
(uint32_t)dcrn, (uint32_t)dcrn);
@ -196,9 +196,9 @@ void helper_store_dcr(CPUPPCState *env, target_ulong dcrn, target_ulong val)
POWERPC_EXCP_INVAL_INVAL, GETPC());
} else {
int ret;
qemu_mutex_lock_iothread();
bql_lock();
ret = ppc_dcr_write(env->dcr_env, (uint32_t)dcrn, (uint32_t)val);
qemu_mutex_unlock_iothread();
bql_unlock();
if (unlikely(ret != 0)) {
qemu_log_mask(LOG_GUEST_ERROR, "DCR write error %d %03x\n",
(uint32_t)dcrn, (uint32_t)dcrn);

4
target/s390x/kvm/kvm.c
View File

@ -1923,7 +1923,7 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
S390CPU *cpu = S390_CPU(cs);
int ret = 0;
qemu_mutex_lock_iothread();
bql_lock();
kvm_cpu_synchronize_state(cs);
@ -1947,7 +1947,7 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
break;
}
qemu_mutex_unlock_iothread();
bql_unlock();
if (ret == 0) {
ret = EXCP_INTERRUPT;

118
target/s390x/tcg/misc_helper.c
View File

@ -101,9 +101,9 @@ uint64_t HELPER(stck)(CPUS390XState *env)
/* SCLP service call */
uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2)
{
qemu_mutex_lock_iothread();
bql_lock();
int r = sclp_service_call(env_archcpu(env), r1, r2);
qemu_mutex_unlock_iothread();
bql_unlock();
if (r < 0) {
tcg_s390_program_interrupt(env, -r, GETPC());
}
@ -117,9 +117,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num)
switch (num) {
case 0x500:
/* KVM hypercall */
qemu_mutex_lock_iothread();
bql_lock();
r = s390_virtio_hypercall(env);
qemu_mutex_unlock_iothread();
bql_unlock();
break;
case 0x44:
/* yield */
@ -127,9 +127,9 @@ void HELPER(diag)(CPUS390XState *env, uint32_t r1, uint32_t r3, uint32_t num)
break;
case 0x308:
/* ipl */
qemu_mutex_lock_iothread();
bql_lock();
handle_diag_308(env, r1, r3, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
r = 0;
break;
case 0x288:
@ -185,7 +185,7 @@ static void update_ckc_timer(CPUS390XState *env)
/* stop the timer and remove pending CKC IRQs */
timer_del(env->tod_timer);
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
env->pending_int &= ~INTERRUPT_EXT_CLOCK_COMPARATOR;
/* the tod has to exceed the ckc, this can never happen if ckc is all 1's */
@ -207,9 +207,9 @@ void HELPER(sckc)(CPUS390XState *env, uint64_t ckc)
{
env->ckc = ckc;
qemu_mutex_lock_iothread();
bql_lock();
update_ckc_timer(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
void tcg_s390_tod_updated(CPUState *cs, run_on_cpu_data opaque)
@ -229,9 +229,9 @@ uint32_t HELPER(sck)(CPUS390XState *env, uint64_t tod_low)
.low = tod_low,
};
qemu_mutex_lock_iothread();
bql_lock();
tdc->set(td, &tod, &error_abort);
qemu_mutex_unlock_iothread();
bql_unlock();
return 0;
}
@ -421,9 +421,9 @@ uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1,
int cc;
/* TODO: needed to inject interrupts - push further down */
qemu_mutex_lock_iothread();
bql_lock();
cc = handle_sigp(env, order_code & SIGP_ORDER_MASK, r1, r3);
qemu_mutex_unlock_iothread();
bql_unlock();
return cc;
}
@ -433,92 +433,92 @@ uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1,
void HELPER(xsch)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_xsch(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(csch)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_csch(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(hsch)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_hsch(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(msch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_msch(cpu, r1, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(rchp)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_rchp(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(rsch)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_rsch(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(sal)(CPUS390XState *env, uint64_t r1)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_sal(cpu, r1, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(schm)(CPUS390XState *env, uint64_t r1, uint64_t r2, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_schm(cpu, r1, r2, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(ssch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_ssch(cpu, r1, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(stcrw)(CPUS390XState *env, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_stcrw(cpu, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(stsch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_stsch(cpu, r1, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
uint32_t HELPER(tpi)(CPUS390XState *env, uint64_t addr)
@ -533,10 +533,10 @@ uint32_t HELPER(tpi)(CPUS390XState *env, uint64_t addr)
tcg_s390_program_interrupt(env, PGM_SPECIFICATION, ra);
}
qemu_mutex_lock_iothread();
bql_lock();
io = qemu_s390_flic_dequeue_io(flic, env->cregs[6]);
if (!io) {
qemu_mutex_unlock_iothread();
bql_unlock();
return 0;
}
@ -554,7 +554,7 @@ uint32_t HELPER(tpi)(CPUS390XState *env, uint64_t addr)
if (s390_cpu_virt_mem_write(cpu, addr, 0, &intc, sizeof(intc))) {
/* writing failed, reinject and properly clean up */
s390_io_interrupt(io->id, io->nr, io->parm, io->word);
qemu_mutex_unlock_iothread();
bql_unlock();
g_free(io);
s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
@ -570,24 +570,24 @@ uint32_t HELPER(tpi)(CPUS390XState *env, uint64_t addr)
}
g_free(io);
qemu_mutex_unlock_iothread();
bql_unlock();
return 1;
}
void HELPER(tsch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_tsch(cpu, r1, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(chsc)(CPUS390XState *env, uint64_t inst)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
ioinst_handle_chsc(cpu, inst >> 16, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
@ -726,27 +726,27 @@ void HELPER(clp)(CPUS390XState *env, uint32_t r2)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
clp_service_call(cpu, r2, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(pcilg)(CPUS390XState *env, uint32_t r1, uint32_t r2)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
pcilg_service_call(cpu, r1, r2, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(pcistg)(CPUS390XState *env, uint32_t r1, uint32_t r2)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
pcistg_service_call(cpu, r1, r2, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(stpcifc)(CPUS390XState *env, uint32_t r1, uint64_t fiba,
@ -754,9 +754,9 @@ void HELPER(stpcifc)(CPUS390XState *env, uint32_t r1, uint64_t fiba,
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
stpcifc_service_call(cpu, r1, fiba, ar, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(sic)(CPUS390XState *env, uint64_t r1, uint64_t r3)
@ -764,9 +764,9 @@ void HELPER(sic)(CPUS390XState *env, uint64_t r1, uint64_t r3)
S390CPU *cpu = env_archcpu(env);
int r;
qemu_mutex_lock_iothread();
bql_lock();
r = css_do_sic(cpu, (r3 >> 27) & 0x7, r1 & 0xffff);
qemu_mutex_unlock_iothread();
bql_unlock();
/* css_do_sic() may actually return a PGM_xxx value to inject */
if (r) {
tcg_s390_program_interrupt(env, -r, GETPC());
@ -777,9 +777,9 @@ void HELPER(rpcit)(CPUS390XState *env, uint32_t r1, uint32_t r2)
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
rpcit_service_call(cpu, r1, r2, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(pcistb)(CPUS390XState *env, uint32_t r1, uint32_t r3,
@ -787,9 +787,9 @@ void HELPER(pcistb)(CPUS390XState *env, uint32_t r1, uint32_t r3,
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
pcistb_service_call(cpu, r1, r3, gaddr, ar, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(mpcifc)(CPUS390XState *env, uint32_t r1, uint64_t fiba,
@ -797,8 +797,8 @@ void HELPER(mpcifc)(CPUS390XState *env, uint32_t r1, uint64_t fiba,
{
S390CPU *cpu = env_archcpu(env);
qemu_mutex_lock_iothread();
bql_lock();
mpcifc_service_call(cpu, r1, fiba, ar, GETPC());
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif

2
target/sparc/int32_helper.c
View File

@ -70,7 +70,7 @@ void cpu_check_irqs(CPUSPARCState *env)
CPUState *cs;
/* We should be holding the BQL before we mess with IRQs */
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
if (env->pil_in && (env->interrupt_index == 0 ||
(env->interrupt_index & ~15) == TT_EXTINT)) {

6
target/sparc/int64_helper.c
View File

@ -69,7 +69,7 @@ void cpu_check_irqs(CPUSPARCState *env)
(env->softint & ~(SOFTINT_TIMER | SOFTINT_STIMER));
/* We should be holding the BQL before we mess with IRQs */
g_assert(qemu_mutex_iothread_locked());
g_assert(bql_locked());
/* TT_IVEC has a higher priority (16) than TT_EXTINT (31..17) */
if (env->ivec_status & 0x20) {
@ -267,9 +267,9 @@ static bool do_modify_softint(CPUSPARCState *env, uint32_t value)
env->softint = value;
#if !defined(CONFIG_USER_ONLY)
if (cpu_interrupts_enabled(env)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_check_irqs(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
return true;

20
target/sparc/win_helper.c
View File

@ -179,9 +179,9 @@ void helper_wrpsr(CPUSPARCState *env, target_ulong new_psr)
cpu_raise_exception_ra(env, TT_ILL_INSN, GETPC());
} else {
/* cpu_put_psr may trigger interrupts, hence BQL */
qemu_mutex_lock_iothread();
bql_lock();
cpu_put_psr(env, new_psr);
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
@ -407,9 +407,9 @@ void helper_wrpstate(CPUSPARCState *env, target_ulong new_state)
#if !defined(CONFIG_USER_ONLY)
if (cpu_interrupts_enabled(env)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_check_irqs(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
}
@ -422,9 +422,9 @@ void helper_wrpil(CPUSPARCState *env, target_ulong new_pil)
env->psrpil = new_pil;
if (cpu_interrupts_enabled(env)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_check_irqs(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
}
@ -451,9 +451,9 @@ void helper_done(CPUSPARCState *env)
#if !defined(CONFIG_USER_ONLY)
if (cpu_interrupts_enabled(env)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_check_irqs(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
}
@ -480,9 +480,9 @@ void helper_retry(CPUSPARCState *env)
#if !defined(CONFIG_USER_ONLY)
if (cpu_interrupts_enabled(env)) {
qemu_mutex_lock_iothread();
bql_lock();
cpu_check_irqs(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
#endif
}

8
target/xtensa/exc_helper.c
View File

@ -105,9 +105,9 @@ void HELPER(waiti)(CPUXtensaState *env, uint32_t pc, uint32_t intlevel)
env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) |
(intlevel << PS_INTLEVEL_SHIFT);
qemu_mutex_lock_iothread();
bql_lock();
check_interrupts(env);
qemu_mutex_unlock_iothread();
bql_unlock();
if (env->pending_irq_level) {
cpu_loop_exit(cpu);
@ -120,9 +120,9 @@ void HELPER(waiti)(CPUXtensaState *env, uint32_t pc, uint32_t intlevel)
void HELPER(check_interrupts)(CPUXtensaState *env)
{
qemu_mutex_lock_iothread();
bql_lock();
check_interrupts(env);
qemu_mutex_unlock_iothread();
bql_unlock();
}
void HELPER(intset)(CPUXtensaState *env, uint32_t v)

50
ui/cocoa.m
View File

@ -117,29 +117,29 @@ static QemuEvent cbevent;
typedef void (^CodeBlock)(void);
typedef bool (^BoolCodeBlock)(void);
static void with_iothread_lock(CodeBlock block)
static void with_bql(CodeBlock block)
{
bool locked = qemu_mutex_iothread_locked();
bool locked = bql_locked();
if (!locked) {
qemu_mutex_lock_iothread();
bql_lock();
}
block();
if (!locked) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
}
static bool bool_with_iothread_lock(BoolCodeBlock block)
static bool bool_with_bql(BoolCodeBlock block)
{
bool locked = qemu_mutex_iothread_locked();
bool locked = bql_locked();
bool val;
if (!locked) {
qemu_mutex_lock_iothread();
bql_lock();
}
val = block();
if (!locked) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
return val;
}
@ -605,7 +605,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
return;
}
with_iothread_lock(^{
with_bql(^{
[self updateUIInfoLocked];
});
}
@ -790,7 +790,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
- (bool) handleEvent:(NSEvent *)event
{
return bool_with_iothread_lock(^{
return bool_with_bql(^{
return [self handleEventLocked:event];
});
}
@ -1182,7 +1182,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
*/
- (void) raiseAllKeys
{
with_iothread_lock(^{
with_bql(^{
qkbd_state_lift_all_keys(kbd);
});
}
@ -1282,7 +1282,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
{
COCOA_DEBUG("QemuCocoaAppController: applicationWillTerminate\n");
with_iothread_lock(^{
with_bql(^{
shutdown_action = SHUTDOWN_ACTION_POWEROFF;
qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
});
@ -1420,7 +1420,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
/* Pause the guest */
- (void)pauseQEMU:(id)sender
{
with_iothread_lock(^{
with_bql(^{
qmp_stop(NULL);
});
[sender setEnabled: NO];
@ -1431,7 +1431,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
/* Resume running the guest operating system */
- (void)resumeQEMU:(id) sender
{
with_iothread_lock(^{
with_bql(^{
qmp_cont(NULL);
});
[sender setEnabled: NO];
@ -1461,7 +1461,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
/* Restarts QEMU */
- (void)restartQEMU:(id)sender
{
with_iothread_lock(^{
with_bql(^{
qmp_system_reset(NULL);
});
}
@ -1469,7 +1469,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
/* Powers down QEMU */
- (void)powerDownQEMU:(id)sender
{
with_iothread_lock(^{
with_bql(^{
qmp_system_powerdown(NULL);
});
}
@ -1488,7 +1488,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
}
__block Error *err = NULL;
with_iothread_lock(^{
with_bql(^{
qmp_eject([drive cStringUsingEncoding: NSASCIIStringEncoding],
NULL, false, false, &err);
});
@ -1523,7 +1523,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
}
__block Error *err = NULL;
with_iothread_lock(^{
with_bql(^{
qmp_blockdev_change_medium([drive cStringUsingEncoding:
NSASCIIStringEncoding],
NULL,
@ -1605,7 +1605,7 @@ static CGEventRef handleTapEvent(CGEventTapProxy proxy, CGEventType type, CGEven
// get the throttle percentage
throttle_pct = [sender tag];
with_iothread_lock(^{
with_bql(^{
cpu_throttle_set(throttle_pct);
});
COCOA_DEBUG("cpu throttling at %d%c\n", cpu_throttle_get_percentage(), '%');
@ -1819,7 +1819,7 @@ static void addRemovableDevicesMenuItems(void)
return;
}
with_iothread_lock(^{
with_bql(^{
QemuClipboardInfo *info = qemu_clipboard_info_ref(cbinfo);
qemu_event_reset(&cbevent);
qemu_clipboard_request(info, QEMU_CLIPBOARD_TYPE_TEXT);
@ -1827,9 +1827,9 @@ static void addRemovableDevicesMenuItems(void)
while (info == cbinfo &&
info->types[QEMU_CLIPBOARD_TYPE_TEXT].available &&
info->types[QEMU_CLIPBOARD_TYPE_TEXT].data == NULL) {
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_event_wait(&cbevent);
qemu_mutex_lock_iothread();
bql_lock();
}
if (info == cbinfo) {
@ -1927,9 +1927,9 @@ static void *call_qemu_main(void *opaque)
int status;
COCOA_DEBUG("Second thread: calling qemu_default_main()\n");
qemu_mutex_lock_iothread();
bql_lock();
status = qemu_default_main();
qemu_mutex_unlock_iothread();
bql_unlock();
COCOA_DEBUG("Second thread: qemu_default_main() returned, exiting\n");
[cbowner release];
exit(status);
@ -1941,7 +1941,7 @@ static int cocoa_main(void)
COCOA_DEBUG("Entered %s()\n", __func__);
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_thread_create(&thread, "qemu_main", call_qemu_main,
NULL, QEMU_THREAD_DETACHED);

4
ui/spice-core.c
View File

@ -222,7 +222,7 @@ static void channel_event(int event, SpiceChannelEventInfo *info)
*/
bool need_lock = !qemu_thread_is_self(&me);
if (need_lock) {
qemu_mutex_lock_iothread();
bql_lock();
}
if (info->flags & SPICE_CHANNEL_EVENT_FLAG_ADDR_EXT) {
@ -260,7 +260,7 @@ static void channel_event(int event, SpiceChannelEventInfo *info)
}
if (need_lock) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
qapi_free_SpiceServerInfo(server);

2
util/async.c
View File

@ -727,7 +727,7 @@ AioContext *qemu_get_current_aio_context(void)
if (ctx) {
return ctx;
}
if (qemu_mutex_iothread_locked()) {
if (bql_locked()) {
/* Possibly in a vCPU thread. */
return qemu_get_aio_context();
}

8
util/main-loop.c
View File

@ -299,13 +299,13 @@ static int os_host_main_loop_wait(int64_t timeout)
glib_pollfds_fill(&timeout);
qemu_mutex_unlock_iothread();
bql_unlock();
replay_mutex_unlock();
ret = qemu_poll_ns((GPollFD *)gpollfds->data, gpollfds->len, timeout);
replay_mutex_lock();
qemu_mutex_lock_iothread();
bql_lock();
glib_pollfds_poll();
@ -514,7 +514,7 @@ static int os_host_main_loop_wait(int64_t timeout)
poll_timeout_ns = qemu_soonest_timeout(poll_timeout_ns, timeout);
qemu_mutex_unlock_iothread();
bql_unlock();
replay_mutex_unlock();
@ -522,7 +522,7 @@ static int os_host_main_loop_wait(int64_t timeout)
replay_mutex_lock();
qemu_mutex_lock_iothread();
bql_lock();
if (g_poll_ret > 0) {
for (i = 0; i < w->num; i++) {
w->revents[i] = poll_fds[n_poll_fds + i].revents;

6
util/qsp.c
View File

@ -124,7 +124,7 @@ static const char * const qsp_typenames[] = {
[QSP_CONDVAR] = "condvar",
};
QemuMutexLockFunc qemu_bql_mutex_lock_func = qemu_mutex_lock_impl;
QemuMutexLockFunc bql_mutex_lock_func = qemu_mutex_lock_impl;
QemuMutexLockFunc qemu_mutex_lock_func = qemu_mutex_lock_impl;
QemuMutexTrylockFunc qemu_mutex_trylock_func = qemu_mutex_trylock_impl;
QemuRecMutexLockFunc qemu_rec_mutex_lock_func = qemu_rec_mutex_lock_impl;
@ -439,7 +439,7 @@ void qsp_enable(void)
{
qatomic_set(&qemu_mutex_lock_func, qsp_mutex_lock);
qatomic_set(&qemu_mutex_trylock_func, qsp_mutex_trylock);
qatomic_set(&qemu_bql_mutex_lock_func, qsp_bql_mutex_lock);
qatomic_set(&bql_mutex_lock_func, qsp_bql_mutex_lock);
qatomic_set(&qemu_rec_mutex_lock_func, qsp_rec_mutex_lock);
qatomic_set(&qemu_rec_mutex_trylock_func, qsp_rec_mutex_trylock);
qatomic_set(&qemu_cond_wait_func, qsp_cond_wait);
@ -450,7 +450,7 @@ void qsp_disable(void)
{
qatomic_set(&qemu_mutex_lock_func, qemu_mutex_lock_impl);
qatomic_set(&qemu_mutex_trylock_func, qemu_mutex_trylock_impl);
qatomic_set(&qemu_bql_mutex_lock_func, qemu_mutex_lock_impl);
qatomic_set(&bql_mutex_lock_func, qemu_mutex_lock_impl);
qatomic_set(&qemu_rec_mutex_lock_func, qemu_rec_mutex_lock_impl);
qatomic_set(&qemu_rec_mutex_trylock_func, qemu_rec_mutex_trylock_impl);
qatomic_set(&qemu_cond_wait_func, qemu_cond_wait_impl);

14
util/rcu.c
View File

@ -283,24 +283,24 @@ static void *call_rcu_thread(void *opaque)
qatomic_sub(&rcu_call_count, n);
synchronize_rcu();
qemu_mutex_lock_iothread();
bql_lock();
while (n > 0) {
node = try_dequeue();
while (!node) {
qemu_mutex_unlock_iothread();
bql_unlock();
qemu_event_reset(&rcu_call_ready_event);
node = try_dequeue();
if (!node) {
qemu_event_wait(&rcu_call_ready_event);
node = try_dequeue();
}
qemu_mutex_lock_iothread();
bql_lock();
}
n--;
node->func(node);
}
qemu_mutex_unlock_iothread();
bql_unlock();
}
abort();
}
@ -337,13 +337,13 @@ static void drain_rcu_callback(struct rcu_head *node)
void drain_call_rcu(void)
{
struct rcu_drain rcu_drain;
bool locked = qemu_mutex_iothread_locked();
bool locked = bql_locked();
memset(&rcu_drain, 0, sizeof(struct rcu_drain));
qemu_event_init(&rcu_drain.drain_complete_event, false);
if (locked) {
qemu_mutex_unlock_iothread();
bql_unlock();
}
@ -365,7 +365,7 @@ void drain_call_rcu(void)
qatomic_dec(&in_drain_call_rcu);
if (locked) {
qemu_mutex_lock_iothread();
bql_lock();
}
}