From owner-cvs-all  Thu Oct 25  2:20:47 2001
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Date: Thu, 25 Oct 2001 19:19:46 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: John Baldwin <jhb@FreeBSD.org>
Cc: <cvs-all@FreeBSD.org>, <cvs-committers@FreeBSD.org>
Subject: Re: cvs commit: src/sys/i386/i386 genassym.c machdep.c swtch.s s
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On Thu, 25 Oct 2001, John Baldwin wrote:

> On 25-Oct-01 Bruce Evans wrote:
> > On Wed, 24 Oct 2001, John Baldwin wrote:
> >>   ...
> >>   Log:
> >>   Split the per-process Local Descriptor Table out of the PCB and into
> >>   struct mdproc.
> >>   ...
> > Why?  It seems to mainly pessimize things by adding an indirection
> > ...
> Imagine a process with 8 threads that sets up a user ldt.  Now we have to go
> update the ldt in all 8 pcb's.  A ldt is per-process, not per-thread.  The pcb

I see.  The "p" in "pcb" is an abbreviation of "thread" :-).

Bruce


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