Re: BUG: Global FPU corruption in 2.2

From: Ulrich Drepper (drepper@redhat.com)
Date: Fri Apr 20 2001 - 14:23:16 EST


"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.

-- 
---------------.                          ,-.   1325 Chesapeake Terrace
Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Red Hat          `--' drepper at redhat.com   `------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Apr 23 2001 - 21:00:37 EST