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    SubjectRe: VM86 interrupt emulation breakage and FIXes for 2.6.x kernel series


    On Fri, 10 Dec 2004, Alan Cox wrote:
    >
    > On Gwe, 2004-12-10 at 22:55, Linus Torvalds wrote:
    > > On Fri, 10 Dec 2004, Alan Cox wrote:
    > > The vm86 interrupt does not allow sharing. And it really _has_ to be
    > > disabled until user mode has cleared the irq source, or you'll have a very
    > > dead machine.
    >
    > Until the 10,000th event it actually seems to work rather happily
    > without that change.

    I suspect you never tried the level-triggered case.

    In the level-triggered case, the 10,000 interrupts happen faster than
    user-mode can even say "Whaaa?".

    Linus
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