motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg: Toggle page execution for Apple Silicon

Browse source 
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 <agraf@csgraf.de>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
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 <richard.henderson@linaro.org>
This commit is contained in:
Roman Bolshakov 2021-01-13 06:28:07 +03:00 • committed by Richard Henderson
parent 6526919224
commit 653b87eb36
4 changed files with 34 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
accel/tcg/translate-all.c
View file

@ -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);