From dc23c0bccf5eea171c87b3db285d032b9a5f06c4 Mon Sep 17 00:00:00 2001 From: Fenghua Yu Date: Tue, 17 May 2011 18:44:27 -0700 Subject: [PATCH] x86, cpu: Add SMEP CPU feature in CR4 Add support for newly documented SMEP (Supervisor Mode Execution Protection) CPU feature in CR4. Signed-off-by: Fenghua Yu LKML-Reference: <1305683069-25394-3-git-send-email-fenghua.yu@intel.com> Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/processor-flags.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h index a898a2b6e10c..59ab4dffa377 100644 --- a/arch/x86/include/asm/processor-flags.h +++ b/arch/x86/include/asm/processor-flags.h @@ -60,6 +60,7 @@ #define X86_CR4_OSXMMEXCPT 0x00000400 /* enable unmasked SSE exceptions */ #define X86_CR4_VMXE 0x00002000 /* enable VMX virtualization */ #define X86_CR4_OSXSAVE 0x00040000 /* enable xsave and xrestore */ +#define X86_CR4_SMEP 0x00100000 /* enable SMEP support */ /* * x86-64 Task Priority Register, CR8