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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-03-19 06:15:37 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-03-29 06:04:17 -0700 |
| commit | 27f74636752d0c4438cf8346cf2a76b6fcf3be16 (patch) | |
| tree | d3710a44e90b6e6ab090a7de68b3437e41280b1f /sysdeps/x86/cpu-tunables.c | |
| parent | cb882b21b63606aabd6e55afe23b42434d95f2ef (diff) | |
| download | glibc-27f74636752d0c4438cf8346cf2a76b6fcf3be16.tar.gz glibc-27f74636752d0c4438cf8346cf2a76b6fcf3be16.tar.xz glibc-27f74636752d0c4438cf8346cf2a76b6fcf3be16.zip | |
x86: Properly disable XSAVE related features [BZ #27605]
1. Support GLIBC_TUNABLES=glibc.cpu.hwcaps=-XSAVE. 2. Disable all features which depend on XSAVE: a. If OSXSAVE is disabled by glibc tunables. Or b. If both XSAVE and XSAVEC aren't usable.
Diffstat (limited to 'sysdeps/x86/cpu-tunables.c')
| -rw-r--r-- | sysdeps/x86/cpu-tunables.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-tunables.c b/sysdeps/x86/cpu-tunables.c index 126896f41b..61b05e5b1d 100644 --- a/sysdeps/x86/cpu-tunables.c +++ b/sysdeps/x86/cpu-tunables.c @@ -168,6 +168,7 @@ TUNABLE_CALLBACK (set_hwcaps) (tunable_val_t *valp) 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); } break; case 6: |