When we start the second thread, we discard all translations so that we can re-do them with CF_PARALLEL. Since there is as yet only one cpu, and we are processing a syscall, there are no live translation blocks and we have exclusivity.
Signed-off-by: Richard Henderson <[email protected]> --- linux-user/mmap.c | 4 ++-- linux-user/syscall.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 002e1e668e..bd2bbaf1f4 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -1010,7 +1010,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int target_prot, CPUState *cpu = thread_cpu; if (!tcg_cflags_has(cpu, CF_PARALLEL)) { tcg_cflags_set(cpu, CF_PARALLEL); - tb_flush(cpu); + tb_flush__exclusive(); } } @@ -1450,7 +1450,7 @@ abi_ulong target_shmat(CPUArchState *cpu_env, int shmid, */ if (!tcg_cflags_has(cpu, CF_PARALLEL)) { tcg_cflags_set(cpu, CF_PARALLEL); - tb_flush(cpu); + tb_flush__exclusive(); } if (qemu_loglevel_mask(CPU_LOG_PAGE)) { diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 91360a072c..d9c394856f 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6633,7 +6633,7 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, */ if (!tcg_cflags_has(cpu, CF_PARALLEL)) { tcg_cflags_set(cpu, CF_PARALLEL); - tb_flush(cpu); + tb_flush__exclusive(); } /* we create a new CPU instance. */ -- 2.43.0
