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    SubjectRe: [PATCH] i386: improve double fault handling

    * H. Peter Anvin <hpa@zytor.com> wrote:

    > Jan Beulich wrote:
    >>
    >>> Firstly, 64-bit does not use a task gate for double faults anymore.
    >>> (but uses a separate IST stack for double faults)
    >>
    >> Sure - because there are no task gates on 64-bit.
    >>
    >
    > What we're doing here is really using task gates to emulate IST
    > anyway.

    yes, because we dont use the main feature that differentiates task gates
    from ISTs: a different cr3 entry. (the rest of the differences is really
    just fluff)

    Ingo


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