diff options
Diffstat (limited to 'sysdeps/x86/cpu-features.c')
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index f180f0d..097868c 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -1106,57 +1106,6 @@ no_cpuid: TUNABLE_CALLBACK (set_x86_ibt)); TUNABLE_GET (x86_shstk, tunable_val_t *, TUNABLE_CALLBACK (set_x86_shstk)); - - /* Check CET status. */ - unsigned int cet_status = get_cet_status (); - - if ((cet_status & GNU_PROPERTY_X86_FEATURE_1_IBT) == 0) - CPU_FEATURE_UNSET (cpu_features, IBT) - if ((cet_status & GNU_PROPERTY_X86_FEATURE_1_SHSTK) == 0) - CPU_FEATURE_UNSET (cpu_features, SHSTK) - - if (cet_status) - { - GL(dl_x86_feature_1) = cet_status; - -# ifndef SHARED - /* Check if IBT and SHSTK are enabled by kernel. */ - if ((cet_status - & (GNU_PROPERTY_X86_FEATURE_1_IBT - | GNU_PROPERTY_X86_FEATURE_1_SHSTK))) - { - /* Disable IBT and/or SHSTK if they are enabled by kernel, but - disabled by environment variable: - - GLIBC_TUNABLES=glibc.cpu.hwcaps=-IBT,-SHSTK - */ - unsigned int cet_feature = 0; - if (!CPU_FEATURE_USABLE (IBT)) - cet_feature |= (cet_status - & GNU_PROPERTY_X86_FEATURE_1_IBT); - if (!CPU_FEATURE_USABLE (SHSTK)) - cet_feature |= (cet_status - & GNU_PROPERTY_X86_FEATURE_1_SHSTK); - - if (cet_feature) - { - int res = dl_cet_disable_cet (cet_feature); - - /* Clear the disabled bits in dl_x86_feature_1. */ - if (res == 0) - GL(dl_x86_feature_1) &= ~cet_feature; - } - - /* Lock CET if IBT or SHSTK is enabled in executable. Don't - lock CET if IBT or SHSTK is enabled permissively. */ - if (GL(dl_x86_feature_control).ibt != cet_permissive - && GL(dl_x86_feature_control).shstk != cet_permissive) - dl_cet_lock_cet (GL(dl_x86_feature_1) - & (GNU_PROPERTY_X86_FEATURE_1_IBT - | GNU_PROPERTY_X86_FEATURE_1_SHSTK)); - } -# endif - } #endif #ifndef SHARED |