From 8fd6e3353b094aa94e37e257ee20cd5e0e5dddcb Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Tue, 30 Jan 2018 22:19:00 +0100
Subject: erts: Remove hipe amd64 code super carrier (exec_mmap)

---
 erts/emulator/sys/common/erl_mmap.c |  4 ----
 erts/emulator/sys/common/erl_mmap.h | 14 --------------
 erts/emulator/sys/common/erl_mseg.c |  6 ------
 erts/emulator/sys/common/erl_mseg.h |  2 --
 4 files changed, 26 deletions(-)

(limited to 'erts/emulator/sys/common')

diff --git a/erts/emulator/sys/common/erl_mmap.c b/erts/emulator/sys/common/erl_mmap.c
index 95e6c6fbd0..90ade5265f 100644
--- a/erts/emulator/sys/common/erl_mmap.c
+++ b/erts/emulator/sys/common/erl_mmap.c
@@ -358,10 +358,6 @@ char* erts_literals_start;
 UWord erts_literals_size;
 #endif
 
-#ifdef ERTS_HAVE_EXEC_MMAPPER
-ErtsMemMapper erts_exec_mmapper;
-#endif
-
 
 #define ERTS_MMAP_SIZE_SC_SA_INC(SZ) 						\
     do {									\
diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h
index 2a07d93c8c..efb12e7737 100644
--- a/erts/emulator/sys/common/erl_mmap.h
+++ b/erts/emulator/sys/common/erl_mmap.h
@@ -93,11 +93,6 @@ typedef struct {
 #define ERTS_MMAP_INIT_LITERAL_INITER \
     {{NULL, NULL}, {NULL, NULL}, ERTS_LITERAL_VIRTUAL_AREA_SIZE, 1, (1 << 10), 0}
 
-#define ERTS_HIPE_EXEC_VIRTUAL_AREA_SIZE (UWORD_CONSTANT(512)*1024*1024)
-
-#define ERTS_MMAP_INIT_HIPE_EXEC_INITER \
-    {{NULL, NULL}, {NULL, NULL}, ERTS_HIPE_EXEC_VIRTUAL_AREA_SIZE, 1, (1 << 10), 0}
-
 
 #define ERTS_SUPERALIGNED_SIZE \
     (1 << ERTS_MMAP_SUPERALIGNED_BITS)
@@ -165,15 +160,6 @@ extern ErtsMemMapper erts_dflt_mmapper;
 extern ErtsMemMapper erts_literal_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 /* ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION */
 #endif /* ERTS_WANT_MEM_MAPPERS */
 
diff --git a/erts/emulator/sys/common/erl_mseg.c b/erts/emulator/sys/common/erl_mseg.c
index bf6de9b13a..a782161a7c 100644
--- a/erts/emulator/sys/common/erl_mseg.c
+++ b/erts/emulator/sys/common/erl_mseg.c
@@ -1406,12 +1406,6 @@ erts_mseg_init(ErtsMsegInit_t *init)
     erts_mtx_init(&init_atoms_mutex, "mseg_init_atoms", NIL,
         ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC);
 
-#ifdef ERTS_HAVE_EXEC_MMAPPER
-    /* Initialize erts_exec_mapper *FIRST*, to increase probability
-     * of getting low memory for HiPE AMD64's small code model.
-     */
-    erts_mmap_init(&erts_exec_mmapper, &init->exec_mmap, 1);
-#endif
     erts_mmap_init(&erts_dflt_mmapper, &init->dflt_mmap, 0);
 #if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
     erts_mmap_init(&erts_literal_mmapper, &init->literal_mmap, 0);
diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h
index bba0dec499..af275c18be 100644
--- a/erts/emulator/sys/common/erl_mseg.h
+++ b/erts/emulator/sys/common/erl_mseg.h
@@ -61,7 +61,6 @@ typedef struct {
     Uint nos;
     ErtsMMapInit dflt_mmap;
     ErtsMMapInit literal_mmap;
-    ErtsMMapInit exec_mmap;
 } ErtsMsegInit_t;
 
 #define ERTS_MSEG_INIT_DEFAULT_INITIALIZER				\
@@ -72,7 +71,6 @@ typedef struct {
     1000,		/* cci:   Cache check interval		*/	\
     ERTS_MMAP_INIT_DEFAULT_INITER,					\
     ERTS_MMAP_INIT_LITERAL_INITER,                                      \
-    ERTS_MMAP_INIT_HIPE_EXEC_INITER                                     \
 }
 
 typedef struct {
-- 
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