Messages in this thread Patch in this message | | | Date | Mon, 20 Jul 2015 08:49:01 +0100 | From | "Jan Beulich" <> | Subject | [PATCH] x86: "noxsave" should imply further disabled features |
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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> --- arch/x86/kernel/fpu/init.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- 4.2-rc3/arch/x86/kernel/fpu/init.c +++ 4.2-rc3-x86-noxsave-means-nompx/arch/x86/kernel/fpu/init.c @@ -351,9 +351,15 @@ static int __init x86_noxsave_setup(char 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; }
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