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    Subject[PATCH 2/3] x86, cpu: Add SMEP CPU feature in CR4
    Date
    From: Fenghua Yu <fenghua.yu@intel.com>

    Add support for newly documented SMEP (Supervisor Mode Execution Protection)
    CPU feature in CR4.

    Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
    ---
    arch/x86/include/asm/processor-flags.h | 1 +
    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 a898a2b..59ab4df 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
    --
    1.7.2


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