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    SubjectRe: [discuss] Re: [Bug 350] New: i386 context switch very slow compared to 2.4 due to wrmsr (performance)
    > I have a need to run v86 code from ring 0, so I'm not keen to slip other

    [for the unsuspecting readers - Peter is talking about non Linux here]

    > people's code in there. This would mean I'd need to write a v86 emulator from
    > scratch which I think is more time than writing the warping code that I've
    > suggested.

    Have you taken a look at valgrind? (

    It is a free software x86 JIT. I don't think it supports 16bit code currently,
    but it probably wouldn't be too difficult to add. It wasn't primarily designed
    for speed - its main application is to instrument programs - but its slowdown
    compared to running on the real CPU is moderate and its certainly fast enough
    for anything designed to run on DoS.

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