diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2019-07-09 10:33:36 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-07-14 12:19:01 +0200 |
| commit | 52ba13f042714c4086416973fb88e2465e0888a1 (patch) | |
| tree | d7504bd7a0d6b1ca6f741897e39ee3eed34a68c1 /include/exec | |
| parent | 2fbb2353ce8d098e172cd25024fc221c1c8e3591 (diff) | |
tcg: Release mmap_lock on translation fault
Turn helper_retaddr into a multi-state flag that may now also
indicate when we're performing a read on behalf of the translator.
In this case, release the mmap_lock before the longjmp back to
the main cpu loop, and thereby avoid a failing assert therein.
Fixes: https://bugs.launchpad.net/qemu/+bug/1832353
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include/exec')
| -rw-r--r-- | include/exec/cpu_ldst_useronly_template.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/include/exec/cpu_ldst_useronly_template.h b/include/exec/cpu_ldst_useronly_template.h index d663826ac2..2378f2958c 100644 --- a/include/exec/cpu_ldst_useronly_template.h +++ b/include/exec/cpu_ldst_useronly_template.h @@ -64,12 +64,18 @@ static inline RES_TYPE glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr) { -#if !defined(CODE_ACCESS) +#ifdef CODE_ACCESS + RES_TYPE ret; + set_helper_retaddr(1); + ret = glue(glue(ld, USUFFIX), _p)(g2h(ptr)); + clear_helper_retaddr(); + return ret; +#else trace_guest_mem_before_exec( env_cpu(env), ptr, trace_mem_build_info(SHIFT, false, MO_TE, false)); -#endif return glue(glue(ld, USUFFIX), _p)(g2h(ptr)); +#endif } #ifndef CODE_ACCESS @@ -90,12 +96,18 @@ glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env, static inline int glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr) { -#if !defined(CODE_ACCESS) +#ifdef CODE_ACCESS + int ret; + set_helper_retaddr(1); + ret = glue(glue(lds, SUFFIX), _p)(g2h(ptr)); + clear_helper_retaddr(); + return ret; +#else trace_guest_mem_before_exec( env_cpu(env), ptr, trace_mem_build_info(SHIFT, true, MO_TE, false)); -#endif return glue(glue(lds, SUFFIX), _p)(g2h(ptr)); +#endif } #ifndef CODE_ACCESS |