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Date: Sun, 18 Sep 2016 00:23:26 +1000 (EST)
From: Bruce Evans <brde@optusnet.com.au>
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To: Bruce Evans <bde@freebsd.org>
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Subject: Re: svn commit: r305899 - in head/sys/i386: i386 include
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On Sat, 17 Sep 2016, Bruce Evans wrote:

> Author: bde
> Date: Sat Sep 17 14:00:52 2016
> New Revision: 305899
> URL: https://svnweb.freebsd.org/changeset/base/305899
>
> Log:
>  Remove all kernel uses of pcb_psl, but keep in in the struct to
>  preserve the ABI and API for applications.  It was removed in the port
>  to amd64, but was remained as garbage giving a micro-pessimization and
>  spurious single-step traps on i386.
>  ...

Actually, I committed a version that breaks the API by renaming the
variable.  I will leave it like that.  pcb_psl is not used anywhere
in head/ports, so it is used in at most the externally-maintained part
of a port or things like gdb scripts.

Bruce