From 195801d700c008b6a8d8acfa299aa5f177446647 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 2 Jan 2024 10:35:25 -0500 Subject: system/cpus: rename qemu_mutex_lock_iothread() to bql_lock() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Paul Durrant Acked-by: Fabiano Rosas Acked-by: David Woodhouse Reviewed-by: Cédric Le Goater Acked-by: Peter Xu Acked-by: Eric Farman Reviewed-by: Harsh Prateek Bora Acked-by: Hyman Huang Reviewed-by: Akihiko Odaki Message-id: 20240102153529.486531-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi --- accel/accel-blocker.c | 10 +++++----- accel/dummy-cpus.c | 8 ++++---- accel/hvf/hvf-accel-ops.c | 4 ++-- accel/kvm/kvm-accel-ops.c | 4 ++-- accel/kvm/kvm-all.c | 22 +++++++++++----------- accel/tcg/cpu-exec.c | 26 +++++++++++++------------- accel/tcg/cputlb.c | 16 ++++++++-------- accel/tcg/tcg-accel-ops-icount.c | 4 ++-- accel/tcg/tcg-accel-ops-mttcg.c | 12 ++++++------ accel/tcg/tcg-accel-ops-rr.c | 14 +++++++------- accel/tcg/tcg-accel-ops.c | 2 +- accel/tcg/translate-all.c | 2 +- 12 files changed, 62 insertions(+), 62 deletions(-) (limited to 'accel') diff --git a/accel/accel-blocker.c b/accel/accel-blocker.c index 1e7f423..e083f24 100644 --- a/accel/accel-blocker.c +++ b/accel/accel-blocker.c @@ -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) { diff --git a/accel/dummy-cpus.c b/accel/dummy-cpus.c index b75c919..f4b0ec5 100644 --- a/accel/dummy-cpus.c +++ b/accel/dummy-cpus.c @@ -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; } diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index abe7adf..8eabb69 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -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; } diff --git a/accel/kvm/kvm-accel-ops.c b/accel/kvm/kvm-accel-ops.c index 6195150..45ff06e 100644 --- a/accel/kvm/kvm-accel-ops.c +++ b/accel/kvm/kvm-accel-ops.c @@ -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; } diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index eb17773..bbc6014 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -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); diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index c938eb9..67eda98 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -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. */ diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index db3f93f..5698a9f 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -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; } diff --git a/accel/tcg/tcg-accel-ops-icount.c b/accel/tcg/tcg-accel-ops-icount.c index b25685f..5824d92 100644 --- a/accel/tcg/tcg-accel-ops-icount.c +++ b/accel/tcg/tcg-accel-ops-icount.c @@ -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(); } } diff --git a/accel/tcg/tcg-accel-ops-mttcg.c b/accel/tcg/tcg-accel-ops-mttcg.c index fac8009..af73070 100644 --- a/accel/tcg/tcg-accel-ops-mttcg.c +++ b/accel/tcg/tcg-accel-ops-mttcg.c @@ -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; diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c index 611932f..c4ea372 100644 --- a/accel/tcg/tcg-accel-ops-rr.c +++ b/accel/tcg/tcg-accel-ops-rr.c @@ -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) { diff --git a/accel/tcg/tcg-accel-ops.c b/accel/tcg/tcg-accel-ops.c index 1b57290..813065c 100644 --- a/accel/tcg/tcg-accel-ops.c +++ b/accel/tcg/tcg-accel-ops.c @@ -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; diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 79a88f5..1737bb3 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -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); } -- cgit v1.1 From 7c754c787e69de79ca9b28749a10fc148d4f4c7d Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 2 Jan 2024 10:35:27 -0500 Subject: qemu/main-loop: rename qemu_cond_wait_iothread() to qemu_cond_wait_bql() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The name "iothread" is overloaded. Use the term Big QEMU Lock (BQL) instead, it is already widely used and unambiguous. Signed-off-by: Stefan Hajnoczi Reviewed-by: Cédric Le Goater Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Paul Durrant Reviewed-by: Harsh Prateek Bora Reviewed-by: Akihiko Odaki Message-id: 20240102153529.486531-4-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi --- accel/tcg/tcg-accel-ops-rr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'accel') diff --git a/accel/tcg/tcg-accel-ops-rr.c b/accel/tcg/tcg-accel-ops-rr.c index c4ea372..5794e5a 100644 --- a/accel/tcg/tcg-accel-ops-rr.c +++ b/accel/tcg/tcg-accel-ops-rr.c @@ -111,7 +111,7 @@ static void rr_wait_io_event(void) while (all_cpu_threads_idle()) { rr_stop_kick_timer(); - qemu_cond_wait_iothread(first_cpu->halt_cond); + qemu_cond_wait_bql(first_cpu->halt_cond); } rr_start_kick_timer(); @@ -198,7 +198,7 @@ static void *rr_cpu_thread_fn(void *arg) /* wait for initial kick-off after machine start */ while (first_cpu->stopped) { - qemu_cond_wait_iothread(first_cpu->halt_cond); + qemu_cond_wait_bql(first_cpu->halt_cond); /* process any pending work */ CPU_FOREACH(cpu) { -- cgit v1.1 From a4a411fbaf95b5712b30de6e65f37ff0aa6cb142 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 2 Jan 2024 10:35:28 -0500 Subject: Replace "iothread lock" with "BQL" in comments MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL) in their names. Update the code comments to use "BQL" instead of "iothread lock". Signed-off-by: Stefan Hajnoczi Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Paul Durrant Reviewed-by: Akihiko Odaki Reviewed-by: Cédric Le Goater Reviewed-by: Harsh Prateek Bora Message-id: 20240102153529.486531-5-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi --- accel/tcg/cputlb.c | 4 ++-- accel/tcg/tcg-accel-ops-icount.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'accel') diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index 5698a9f..3facfcb 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -1975,7 +1975,7 @@ static void *atomic_mmu_lookup(CPUState *cpu, vaddr addr, MemOpIdx oi, * @size: number of bytes * @mmu_idx: virtual address context * @ra: return address into tcg generated code, or 0 - * Context: iothread lock held + * Context: BQL held * * Load @size bytes from @addr, which is memory-mapped i/o. * The bytes are concatenated in big-endian order with @ret_be. @@ -2521,7 +2521,7 @@ static Int128 do_ld16_mmu(CPUState *cpu, vaddr addr, * @size: number of bytes * @mmu_idx: virtual address context * @ra: return address into tcg generated code, or 0 - * Context: iothread lock held + * Context: BQL held * * Store @size bytes at @addr, which is memory-mapped i/o. * The bytes to store are extracted in little-endian order from @val_le; diff --git a/accel/tcg/tcg-accel-ops-icount.c b/accel/tcg/tcg-accel-ops-icount.c index 5824d92..9e1ae66 100644 --- a/accel/tcg/tcg-accel-ops-icount.c +++ b/accel/tcg/tcg-accel-ops-icount.c @@ -123,7 +123,7 @@ void icount_prepare_for_run(CPUState *cpu, int64_t cpu_budget) if (cpu->icount_budget == 0) { /* - * We're called without the iothread lock, so must take it while + * We're called without the BQL, so must take it while * we're calling timer handlers. */ bql_lock(); -- cgit v1.1