From 653b87eb36045b506b79f0bb433016ef1c54bc9a Mon Sep 17 00:00:00 2001 From: Roman Bolshakov Date: Wed, 13 Jan 2021 06:28:07 +0300 Subject: tcg: Toggle page execution for Apple Silicon Pages can't be both write and executable at the same time on Apple Silicon. macOS provides public API to switch write protection [1] for JIT applications, like TCG. 1. https://developer.apple.com/documentation/apple_silicon/porting_just-in-time_compilers_to_apple_silicon Tested-by: Alexander Graf Signed-off-by: Roman Bolshakov Message-Id: <20210113032806.18220-1-r.bolshakov@yadro.com> [rth: Inline the qemu_thread_jit_* functions; drop the MAP_JIT change for a follow-on patch.] Signed-off-by: Richard Henderson --- accel/tcg/cpu-exec.c | 2 ++ accel/tcg/translate-all.c | 3 +++ 2 files changed, 5 insertions(+) (limited to 'accel/tcg') diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 37d17c8e88..6d017e46dd 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -186,6 +186,7 @@ cpu_tb_exec(CPUState *cpu, TranslationBlock *itb, int *tb_exit) } #endif /* DEBUG_DISAS */ + qemu_thread_jit_execute(); ret = tcg_qemu_tb_exec(env, tb_ptr); cpu->can_do_io = 1; /* @@ -410,6 +411,7 @@ static inline void tb_add_jump(TranslationBlock *tb, int n, { uintptr_t old; + qemu_thread_jit_write(); assert(n < ARRAY_SIZE(tb->jmp_list_next)); qemu_spin_lock(&tb_next->jmp_lock); diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 73fef47148..d09c187e0f 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1670,7 +1670,9 @@ static void do_tb_phys_invalidate(TranslationBlock *tb, bool rm_from_page_list) static void tb_phys_invalidate__locked(TranslationBlock *tb) { + qemu_thread_jit_write(); do_tb_phys_invalidate(tb, true); + qemu_thread_jit_execute(); } /* invalidate one TB @@ -1872,6 +1874,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, #endif assert_memory_lock(); + qemu_thread_jit_write(); phys_pc = get_page_addr_code(env, pc); -- cgit v1.2.3-55-g7522