diff options
| author | Jan Beulich <JBeulich@suse.com> | 2015-07-20 08:49:01 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-07-21 08:20:42 +0200 |
| commit | 5bc016f1abaa1c5ac0e3af23aa79faec4634a074 (patch) | |
| tree | 7380b96c310c3b75f6ac395cd288d83987d5d267 /arch/x86 | |
| parent | a89652769470d12cd484ee3d3f7bde0742be8d96 (diff) | |
| download | linux-5bc016f1abaa1c5ac0e3af23aa79faec4634a074.tar.gz linux-5bc016f1abaa1c5ac0e3af23aa79faec4634a074.tar.bz2 linux-5bc016f1abaa1c5ac0e3af23aa79faec4634a074.zip | |
x86/fpu: Disable dependent CPU features on "noxsave"
Complete the set of dependent features that need disabling at
once: XSAVEC, AVX-512 and all currently known to the kernel
extensions to it, as well as MPX need to be disabled too.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/55ACC40D0200007800092E6C@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/fpu/init.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c index 0b39173dd971..1e173f6285c7 100644 --- a/arch/x86/kernel/fpu/init.c +++ b/arch/x86/kernel/fpu/init.c @@ -351,9 +351,15 @@ static int __init x86_noxsave_setup(char *s) setup_clear_cpu_cap(X86_FEATURE_XSAVE); setup_clear_cpu_cap(X86_FEATURE_XSAVEOPT); + setup_clear_cpu_cap(X86_FEATURE_XSAVEC); setup_clear_cpu_cap(X86_FEATURE_XSAVES); setup_clear_cpu_cap(X86_FEATURE_AVX); setup_clear_cpu_cap(X86_FEATURE_AVX2); + setup_clear_cpu_cap(X86_FEATURE_AVX512F); + setup_clear_cpu_cap(X86_FEATURE_AVX512PF); + setup_clear_cpu_cap(X86_FEATURE_AVX512ER); + setup_clear_cpu_cap(X86_FEATURE_AVX512CD); + setup_clear_cpu_cap(X86_FEATURE_MPX); return 1; } |