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[RFC PATCH glibc 13/34] x86-64: Disable prefer_map_32bit_exec tunable on
From: |
Sergey Bugaev |
Subject: |
[RFC PATCH glibc 13/34] x86-64: Disable prefer_map_32bit_exec tunable on non-Linux |
Date: |
Sun, 19 Mar 2023 18:09:56 +0300 |
While we could/should implement MAP_32BIT for the Hurd port by setting
all the high bits of mask in a vm_map () call, neither MAP_32BIT nor
glibc.cpu.prefer_map_32bit_exec exist on the Hurd as of now. Compile
this code out to fix build failures.
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
---
sysdeps/x86/cpu-features.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 822688e2..78631d7a 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -27,7 +27,7 @@
extern void TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *)
attribute_hidden;
-# ifdef __LP64__
+# if defined (__LP64__) && defined (__linux__)
static void
TUNABLE_CALLBACK (set_prefer_map_32bit_exec) (tunable_val_t *valp)
{
@@ -715,7 +715,7 @@ no_cpuid:
#if HAVE_TUNABLES
TUNABLE_GET (hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps));
-# ifdef __LP64__
+# if defined (__LP64__) && defined (__linux__)
TUNABLE_GET (prefer_map_32bit_exec, tunable_val_t *,
TUNABLE_CALLBACK (set_prefer_map_32bit_exec));
# endif
--
2.39.2
- [RFC PATCH 00/34] The rest of the x86_64-gnu port, Sergey Bugaev, 2023/03/19
- [RFC PATCH gnumach 01/34] Add i386_fsgs_base_state, Sergey Bugaev, 2023/03/19
- [RFC PATCH gnumach 02/34] Remove bootstrap.defs, Sergey Bugaev, 2023/03/19
- [RFC PATCH gnumach 03/34] Make exception subcode a long, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 04/34] hurd: Make exception subcode a long, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 05/34] hurd: Remove __hurd_threadvar_stack_{offset, mask}, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 09/34] hurd: Fix _hurd_setup_sighandler () signature, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 06/34] hurd: Swap around two function calls, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 07/34] hurd: Fix file name in #error, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 12/34] hurd: More 64-bit integer casting fixes, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 13/34] x86-64: Disable prefer_map_32bit_exec tunable on non-Linux,
Sergey Bugaev <=
- [RFC PATCH glibc 14/34] hurd: Move rtld-strncpy-c.c out of mach/hurd/, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 15/34] hurd: Use uintptr_t for register values in trampoline.c, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 10/34] stdio-common: Fix building when !IS_IN (libc), Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 11/34] mach, hurd: Drop __libc_lock_self0, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 08/34] hurd: Disable O_TRUNC and FS_RETRY_MAGICAL in rtld, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 17/34] hurd: Implement x86_64/intr-msg.h, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 16/34] hurd: Add sys/ucontext.h and sigcontext.h for x86_64, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 18/34] hurd: Port trampoline.c to x86_64, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 19/34] hurd: Move a couple of singal-related files to x86, Sergey Bugaev, 2023/03/19
- [RFC PATCH glibc 24/34] hurd: Only check for TLS initialization inside rtld or in static builds, Sergey Bugaev, 2023/03/19