motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-10 11:04:58 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

Pull request

Browse source 
-----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmWcJMUACgkQnKSrs4Gr
 c8hh/Qf/Wt177UlhBR49OWmmegs8c8yS1mhyawo7YIJM4pqoXCYLaACpcKECXcGU
 rlgyR4ow68EXnnU8+/s2cp2UqHxrla+E2eNqBoTDmkNt3Cko5sJn5G5PM5EYK+mO
 JjFRzn7awRyxD6mGOuaMVoj6OuHbAA/U4JF7FhW0YuRl8v0/mvAxRSfQ4U6Crq/y
 19Aa1CXHD1GH2CUJsMCY8zT47Dr4DJcvZx5IpcDFaHaYDCkktFwNzdo5IDnCx2M2
 xnP37Qp/Q93cu12lWkVOu8HCT6yhoszahyOqlBxDmo7QeGkskrxGbMyE+vHM3fFI
 aGSxiw193U7/QWu+Cq2/727C3YIq1g==
 =pKUb
 -----END PGP SIGNATURE-----

Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging

Pull request

# -----BEGIN PGP SIGNATURE-----
#
# iQEzBAABCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmWcJMUACgkQnKSrs4Gr
# c8hh/Qf/Wt177UlhBR49OWmmegs8c8yS1mhyawo7YIJM4pqoXCYLaACpcKECXcGU
# rlgyR4ow68EXnnU8+/s2cp2UqHxrla+E2eNqBoTDmkNt3Cko5sJn5G5PM5EYK+mO
# JjFRzn7awRyxD6mGOuaMVoj6OuHbAA/U4JF7FhW0YuRl8v0/mvAxRSfQ4U6Crq/y
# 19Aa1CXHD1GH2CUJsMCY8zT47Dr4DJcvZx5IpcDFaHaYDCkktFwNzdo5IDnCx2M2
# xnP37Qp/Q93cu12lWkVOu8HCT6yhoszahyOqlBxDmo7QeGkskrxGbMyE+vHM3fFI
# aGSxiw193U7/QWu+Cq2/727C3YIq1g==
# =pKUb
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 08 Jan 2024 16:37:25 GMT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  Rename "QEMU global mutex" to "BQL" in comments and docs
  Replace "iothread lock" with "BQL" in comments
  qemu/main-loop: rename qemu_cond_wait_iothread() to qemu_cond_wait_bql()
  qemu/main-loop: rename QEMU_IOTHREAD_LOCK_GUARD to BQL_LOCK_GUARD
  system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()
  iothread: Remove unused Error** argument in aio_context_set_aio_params

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2024-01-09 10:32:23 +00:00
commit 9468484fe9
124 changed files with 646 additions and 655 deletions
Download patch file Download diff file Expand all files Collapse all files

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. */

20
accel/tcg/cputlb.c
View file

@ -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.
@ -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);
}
@ -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;
@ -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;
}

6
accel/tcg/tcg-accel-ops-icount.c
View file

@ -123,12 +123,12 @@ 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.
*/
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;

18
accel/tcg/tcg-accel-ops-rr.c
View file

@ -111,7 +111,7 @@ static void rr_wait_io_event(void)
while (all_cpu_threads_idle() && replay_can_wait()) {
rr_stop_kick_timer();
qemu_cond_wait_iothread(first_cpu->halt_cond);
qemu_cond_wait_bql(first_cpu->halt_cond);
}
rr_start_kick_timer();
@ -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();
@ -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) {
@ -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);
}