diff options
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 2 | ||||
| -rw-r--r-- | sysdeps/x86/cpu-tunables.c | 15 |
2 files changed, 15 insertions, 2 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index 097868c1d9..80a07ac589 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -110,7 +110,7 @@ update_active (struct cpu_features *cpu_features) if (!CPU_FEATURES_CPU_P (cpu_features, RTM_ALWAYS_ABORT)) CPU_FEATURE_SET_ACTIVE (cpu_features, RTM); -#if CET_ENABLED +#if CET_ENABLED && 0 CPU_FEATURE_SET_ACTIVE (cpu_features, IBT); CPU_FEATURE_SET_ACTIVE (cpu_features, SHSTK); #endif diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c index 142c6b9240..1742400525 100644 --- a/sysdeps/x86/cpu-tunables.c +++ b/sysdeps/x86/cpu-tunables.c @@ -35,6 +35,17 @@ break; \ } +#define CHECK_GLIBC_IFUNC_CPU_BOTH(f, cpu_features, name, len) \ + _Static_assert (sizeof (#name) - 1 == len, #name " != " #len); \ + if (tunable_str_comma_strcmp_cte (&f, #name)) \ + { \ + if (f.disable) \ + CPU_FEATURE_UNSET (cpu_features, name) \ + else \ + CPU_FEATURE_SET_ACTIVE (cpu_features, name) \ + break; \ + } + /* Disable a preferred feature NAME. We don't enable a preferred feature which isn't available. */ #define CHECK_GLIBC_IFUNC_PREFERRED_OFF(f, cpu_features, name, len) \ @@ -131,11 +142,13 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp) } break; case 5: + { + CHECK_GLIBC_IFUNC_CPU_BOTH (n, cpu_features, SHSTK, 5); + } if (n.disable) { CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, LZCNT, 5); CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, MOVBE, 5); - CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, SHSTK, 5); CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, SSSE3, 5); CHECK_GLIBC_IFUNC_CPU_OFF (n, cpu_features, XSAVE, 5); } |