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Re: thread-ready ABIs

To: "H . J . Lu" <hjl@lucon.org>
Subject: Re: thread-ready ABIs
From: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Date: Mon, 21 Jan 2002 14:27:21 +0100 (MET)
Cc: Dominic Sweetman <dom@algor.co.uk>, "Kevin D. Kissell" <kevink@mips.com>, Ulrich Drepper <drepper@redhat.com>, GNU libc alpha <libc-alpha@sources.redhat.com>, linux-mips@oss.sgi.com
In-reply-to: <20020119114204.A13939@lucon.org>
Organization: Technical University of Gdansk
Sender: owner-linux-mips@oss.sgi.com
On Sat, 19 Jan 2002, H . J . Lu wrote:

> But it has to be a per thread value.

 But threads run under different contexts in Linux, AFAIK.

> This is a patch against 2.4.16. Will this restore k1 to a known per
> thread value?

 It wouldn't -- k1 isn't saved.  And there are TLB exception handlers (the
most important performance issue here) that don't use framing at all --
see arch/mips/mm/tlbex-r?k.S.

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +


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