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    SubjectRe: new IRQ scalability changes in 2.3.48


    On Sun, 12 Mar 2000 yodaiken@fsmlabs.com wrote:
    >
    > Previously, _any_ interrupt was let to progress. That is, hardware
    > priorities were ignored by Linux.

    No. This actually reverts to someof the original behaviour, because REALLY
    previously we had exactly the old behaviour for the so-called fast
    interrupts.

    In between we had the "no priorities" version,

    > It's amazing how stubbornly hardware folks refuse to consider OS in their
    > designs.

    Actually, I think it's more that they _think_ they consider the OS in
    their designs.

    A lot of operating systems are designed around priority levels because
    that is how a lot of early hardware worked.. And because a lot of OS's
    have that notion, the hardware tends to be designed for it. A bad circle.

    Linus


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