diff options
Diffstat (limited to 'sysdeps/x86')
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 15 | ||||
| -rw-r--r-- | sysdeps/x86/include/cpu-features-preferred_feature_index_1.def | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index a2197ed211..822688e21f 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -27,6 +27,16 @@ extern void TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *) attribute_hidden; +# ifdef __LP64__ +static void +TUNABLE_CALLBACK (set_prefer_map_32bit_exec) (tunable_val_t *valp) +{ + if (valp->numval) + GLRO(dl_x86_cpu_features).preferred[index_arch_Prefer_MAP_32BIT_EXEC] + |= bit_arch_Prefer_MAP_32BIT_EXEC; +} +# endif + # if CET_ENABLED extern void TUNABLE_CALLBACK (set_x86_ibt) (tunable_val_t *) attribute_hidden; @@ -705,6 +715,11 @@ no_cpuid: #if HAVE_TUNABLES TUNABLE_GET (hwcaps, tunable_val_t *, TUNABLE_CALLBACK (set_hwcaps)); +# ifdef __LP64__ + TUNABLE_GET (prefer_map_32bit_exec, tunable_val_t *, + TUNABLE_CALLBACK (set_prefer_map_32bit_exec)); +# endif + bool disable_xsave_features = false; if (!CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE)) diff --git a/sysdeps/x86/include/cpu-features-preferred_feature_index_1.def b/sysdeps/x86/include/cpu-features-preferred_feature_index_1.def index e45f9cb159..d20c5b3196 100644 --- a/sysdeps/x86/include/cpu-features-preferred_feature_index_1.def +++ b/sysdeps/x86/include/cpu-features-preferred_feature_index_1.def @@ -26,6 +26,7 @@ BIT (I586) BIT (I686) BIT (Slow_SSE4_2) BIT (AVX_Fast_Unaligned_Load) +BIT (Prefer_MAP_32BIT_EXEC) BIT (Prefer_No_VZEROUPPER) BIT (Prefer_ERMS) BIT (Prefer_No_AVX512) |