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    SubjectRe: [RFC] de-asmify the x86-64 system call slowpath
    On 01/27/2014 02:46 PM, Andy Lutomirski wrote:
    >
    > I think that sysret for sigreturn is probably not very interesting.
    > On the other hand, sysret for #PF might be a huge win, despite being
    > even scarier.
    >

    SYSRET for #PF or other exceptions is a nonstarter; register state is
    live at that point.

    -hpa




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