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  • Linux 5.10-rc1

    Posted on Alex5723 Comment on the AskWoody Lounge
    • This topic has 0 replies, 1 voice, and was last updated 1 month ago.
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      • #2307293 Reply
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        The most interesting – to me – change here is Christoph’s setf_fs()
        removal (it got merged through Al Viro, as you can see in my mergelog
        below). It’s not a _huge_ change, but it’s interesting because the
        whole model of set_fs() to specify whether a userspace copy actually
        goes to user space or kernel space goes back to pretty much the
        original release of Linux, and while the name is entirely historic (it
        hasn’t used the %fs segment register in a long time), the concept has
        remained. Until now.

        We still do have “set_fs()” around, and not every architecture has
        been converted to the new world order, but x86, powerpc, s390 and
        RISC-V have had the address space overrides removed, and all the core
        work is done. Other architectures will hopefully get converted away
        from that very historic model too, but it might take a while to get
        rid of it all….

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