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    SubjectRe: [PATCH v2 3/4] x86, head_32/64.S: Enable SMEP
    On 05/17/2011 04:08 PM, Yu, Fenghua wrote:
    >>
    >> Are EFI runtime service pages currently set up appropriately?
    >
    > They are not set up yet. efi init is called after this.
    >
    > But at this time there is no user space code yet. So there is no SMEP violation chance until later when any user space page table is setup.
    >

    Are EFI runtime pages set up with U=0? I would argue it is a bug if
    they aren't, but we want to make sure that there isn't such a bug.

    -hpa


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