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authorFenghua Yu <fenghua.yu@intel.com>2011-05-17 18:44:27 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2011-05-17 21:06:42 -0700
commitdc23c0bccf5eea171c87b3db285d032b9a5f06c4 (patch)
tree755ec174162c6582cbe4aca7ee7f48ca7be855f2 /arch/x86
parentd0281a257f370b09c410e466571858b4e12869c9 (diff)
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 <fenghua.yu@intel.com> LKML-Reference: <1305683069-25394-3-git-send-email-fenghua.yu@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/processor-flags.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h
index a898a2b6e10..59ab4dffa37 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