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    SubjectRe: [patch 1/2] x86_64 page fault NMI-safe
    On Thu, Jul 15, 2010 at 4:41 PM, H. Peter Anvin <> wrote:
    > No, the problem is that without IST it'll try to drop the NMI stack
    > frame itself *on the user stack*.

    Oh, because SS has already been cleared, but rsp still points to the
    user stack? Ok, that does seem insurmountable.


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