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Groups > linux.kernel > #1441676
| From | Paolo Bonzini <pbonzini@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RFC PATCH 1/4] x86: add UMIP feature and CR4 bit |
| Date | 2016-07-12 21:30 +0200 |
| Message-ID | <rUbxw-Oh-31@gated-at.bofh.it> (permalink) |
| References | <rUbxw-Oh-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/uapi/asm/processor-flags.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 4a413485f9eb..33703c83b647 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -279,6 +279,7 @@ #define X86_FEATURE_AVIC (15*32+13) /* Virtual Interrupt Controller */ /* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */ +#define X86_FEATURE_UMIP (16*32+ 2) /* User-Mode Instruction Prevention */ #define X86_FEATURE_PKU (16*32+ 3) /* Protection Keys for Userspace */ #define X86_FEATURE_OSPKE (16*32+ 4) /* OS Protection Keys Enable */ diff --git a/arch/x86/include/uapi/asm/processor-flags.h b/arch/x86/include/uapi/asm/processor-flags.h index 567de50a4c2a..5ef9d6f459c9 100644 --- a/arch/x86/include/uapi/asm/processor-flags.h +++ b/arch/x86/include/uapi/asm/processor-flags.h @@ -104,6 +104,8 @@ #define X86_CR4_OSFXSR _BITUL(X86_CR4_OSFXSR_BIT) #define X86_CR4_OSXMMEXCPT_BIT 10 /* enable unmasked SSE exceptions */ #define X86_CR4_OSXMMEXCPT _BITUL(X86_CR4_OSXMMEXCPT_BIT) +#define X86_CR4_UMIP_BIT 11 /* enable user-mode instruction prevention */ +#define X86_CR4_UMIP _BITUL(X86_CR4_UMIP_BIT) #define X86_CR4_VMXE_BIT 13 /* enable VMX virtualization */ #define X86_CR4_VMXE _BITUL(X86_CR4_VMXE_BIT) #define X86_CR4_SMXE_BIT 14 /* enable safer mode (TXT) */ -- 1.8.3.1
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[RFC PATCH 1/4] x86: add UMIP feature and CR4 bit Paolo Bonzini <pbonzini@redhat.com> - 2016-07-12 21:30 +0200
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