From: Paul Mackerras <paulus@samba.org>
To: "David S. Miller" <davem@redhat.com>
Cc: hpa@zytor.com (H. Peter Anvin), linux-kernel@vger.kernel.org
Subject: Re: AES assembler optimizations
Date: Wed, 11 Aug 2004 11:02:48 +1000 [thread overview]
Message-ID: <16665.28728.720742.251546@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20040810133609.4f1ca352.davem@redhat.com>
David S. Miller writes:
> On sparc64, we:
>
> 1) Always save the full FPU state at context switch time if it
> is active.
>
> 2) On entry to a FPU-using kernel routine, we save the FPU if
> it is active.
How is that implemented? Do you have some magic to make gcc emit a
call to an fpu-save routine in the prolog if the function uses the
FPU? Or are you only talking about functions written in assembler?
Paul.
next prev parent reply other threads:[~2004-08-11 1:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2riR3-7U5-3@gated-at.bofh.it>
2004-08-09 14:28 ` Andi Kleen
2004-08-09 16:02 ` Bob Deblier
2004-08-09 17:12 ` Matti Aarnio
2004-08-10 19:51 ` H. Peter Anvin
2004-08-10 20:36 ` David S. Miller
2004-08-11 1:02 ` Paul Mackerras [this message]
2004-08-11 1:25 ` David S. Miller
2004-08-12 20:18 ` Bill Davidsen
2004-08-09 18:16 ` Andi Kleen
2004-08-09 20:20 ` dean gaudet
2004-08-09 13:47 Bob Deblier
2004-08-09 14:32 ` Patrick McFarland
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