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Date: Fri, 20 Jun 2003 15:40:48 +0400 (MSD)
From: Igor Sysoev <is@rambler-co.ru>
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Subject: Implementing TLS: step 1
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If we could sacrifice our current thread compatibility in 5.0-5.1
then we could change kse_mailbox from

        struct kse_mailbox {
           int                     km_version;     /* Mailbox version */
           struct kse_thr_mailbox  *km_curthread;  /* Current thread */
           ...

to
     
        struct kse_mailbox { 
           struct kse_thr_mailbox  *km_curthread;  /* Current thread */
           int                     km_version;     /* Mailbox version */
           ...

then x86's gs would still point to kse_mailbox, and gs:[0] would be
and TP pointer.  Also we need to modify

     struct kse_thr_mailbox {
+          void              *tls;
           ucontext_t        tm_context;     /* User thread context */
           ...

And the static TLS must be allocated before kse_thr_mailbox.


Igor Sysoev
http://sysoev.ru/en/