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    SubjectRe: [patch 00/11] ANNOUNCE: "Syslets", generic asynchronous system call support

    * Benjamin LaHaise <> wrote:

    > > > Open issues:
    > >
    > > Let me add some more
    > Also: FPU state (especially important with the FPU and SSE memory copy
    > variants), segment register bases on x86-64, interaction with
    > set_fs()...

    agreed - i'll fix this. But i can see no big conceptual issue here -
    these resources are all attached to the user context, and that doesnt
    change upon an 'async context-switch'. So it's "only" a matter of
    properly separating the user execution context from the kernel execution
    context. The hardest bit was getting the ptregs details right - the
    FPU/SSE state is pretty much async already (in the hardware too) and
    isnt even touched by any of these codepaths.

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