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| author | Sverker Eriksson <[email protected]> | 2016-10-21 16:42:30 +0200 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-10-21 16:42:30 +0200 |
| commit | 79abd75445dec4f1932868fcc52238a84d94cce0 (patch) | |
| tree | 7cdb0ae5727da8f8f7b6bba32e748560187cfef3 | |
| parent | a7ec329873625dada8defa5d4db06d96cf421a97 (diff) | |
| download | otp-79abd75445dec4f1932868fcc52238a84d94cce0.tar.gz otp-79abd75445dec4f1932868fcc52238a84d94cce0.tar.bz2 otp-79abd75445dec4f1932868fcc52238a84d94cce0.zip | |
erts: Use mprotect for hipe on all arch except x86_64
Only x86_64 needs to reserve low virtual memory for its
amd64 small code model.
| -rw-r--r-- | erts/configure.in | 10 | ||||
| -rw-r--r-- | erts/emulator/sys/common/erl_mmap.h | 18 |
2 files changed, 19 insertions, 9 deletions
diff --git a/erts/configure.in b/erts/configure.in index 5bd8afeea6..4bff2ebf3d 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -2745,22 +2745,22 @@ AC_CHECK_PROG(M4, m4, m4) if test X${enable_hipe} != Xno; then - if test X$ac_cv_sizeof_void_p != X4; then - dnl HiPE cannot run on 64-bit without MAP_FIXED and MAP_NORESERVE + if test X$ac_cv_sizeof_void_p != X4 && test X$ARCH = Xamd64; then + dnl HiPE cannot run on x86_64 without MAP_FIXED and MAP_NORESERVE AC_CHECK_DECLS([MAP_FIXED, MAP_NORESERVE], [], [], [#include <sys/mman.h>]) if test X$ac_cv_have_decl_MAP_FIXED != Xyes || test X$ac_cv_have_decl_MAP_NORESERVE != Xyes; then if test X${enable_hipe} = Xyes; then - AC_MSG_ERROR([HiPE on 64-bit needs MAP_FIXED and MAP_NORESERVE flags for mmap()]) + AC_MSG_ERROR([HiPE on x86_64 needs MAP_FIXED and MAP_NORESERVE flags for mmap()]) else enable_hipe=no AC_MSG_WARN([Disable HiPE due to lack of MAP_FIXED and MAP_NORESERVE flags for mmap()]) fi fi else - dnl HiPE cannot run on 32-bit without mprotect() + dnl HiPE cannot run without mprotect() if test X$ac_cv_func_mprotect != Xyes; then if test X${enable_hipe} = Xyes; then - AC_MSG_ERROR([HiPE on 32-bit needs mprotect()]) + AC_MSG_ERROR([HiPE needs mprotect() on $ARCH]) else enable_hipe=no AC_MSG_WARN([Disable HiPE due to lack of mprotect()]) diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h index 92e9eb9e41..1049f7affc 100644 --- a/erts/emulator/sys/common/erl_mmap.h +++ b/erts/emulator/sys/common/erl_mmap.h @@ -157,13 +157,23 @@ Eterm erts_mmap_info_options(ErtsMemMapper*, # include "erl_alloc_types.h" extern ErtsMemMapper erts_dflt_mmapper; -# if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION) + +# if defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION) + +# if defined(ARCH_64) extern ErtsMemMapper erts_literal_mmapper; -# ifdef ERTS_ALC_A_EXEC -# define ERTS_HAVE_EXEC_MMAPPER +# endif + +# if defined(ERTS_ALC_A_EXEC) && defined(__x86_64__) + /* + * On x86_64, exec_alloc employs its own super carrier 'erts_exec_mmaper' + * to ensure low memory for HiPE AMD64 small code model. + */ +# define ERTS_HAVE_EXEC_MMAPPER extern ErtsMemMapper erts_exec_mmapper; -# endif # endif + +# endif /* ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION */ #endif /* ERTS_WANT_MEM_MAPPERS */ /*#define HARD_DEBUG_MSEG*/ |