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To: root@chaos.analogic.com
Cc: Victor Zandy <zandy@cs.wisc.edu>, linux-kernel@vger.kernel.org,
        pcroth@cs.wisc.edu, epaulson@cs.wisc.edu
Subject: Re: BUG: Global FPU corruption in 2.2
In-Reply-To: <Pine.LNX.3.95.1010420145755.11087A-100000@chaos.analogic.com>
Reply-To: drepper@cygnus.com (Ulrich Drepper)
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From: Ulrich Drepper <drepper@redhat.com>
Date: 20 Apr 2001 12:23:16 -0700
In-Reply-To: "Richard B. Johnson"'s message of "Fri, 20 Apr 2001 15:07:28 -0400 (EDT)"
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"Richard B. Johnson" <root@chaos.analogic.com> writes:

> If it "fixes" it, there is no problem with the FPU, but with the
> 'C' runtime library which doesn't initialize the FPU to a known
> state before it uses it.

It's the kernel which initializes the FPU.  This was always the case
and necessary to implement the fast lazy FPU saving/restoring.
Processes which never use the FPU never initialize it.

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