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