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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.


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