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Date:      Tue, 18 Sep 2001 15:02:13 -0700 (PDT)
From:      John Baldwin <jhb@FreeBSD.org>
To:        hackers@FreeBSD.org
Subject:   JKH Project: x86: pcb_ext
Message-ID:  <XFMail.010918150213.jhb@FreeBSD.org>

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Here's a Junior Kernel Hacker project for someone:

- Move pcb_ext and pcb_ldt out of the pcb of struct thread and into
  struct mdproc;  I.e., you probably want to do something like this:
  - Rename struct pcb_ext to struct proc_tss and struct pcb_ldt to
    struct proc_ldt.  (Fixup pcb_ext member names to use a tss_
    prefix instead of ext_)
  - Have a struct mdproc as so:

        struct mdproc {
                struct  proc_tss *md_tss;
                struct  proc_ldt *md_ldt;
        }

Prior to KSE this was just annoyance but wasn't an actual problem.  With KSE
threads are temporary, whereas the ldt and tss are per-process properties that
need to stick around.

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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