From: Ralf Baechle <ralf@linux-mips.org>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: tsbogend@alpha.franken.de, linux-mips@linux-mips.org
Subject: Re: [PATCH] IP28: added cache barrier to assembly routines
Date: Wed, 28 Nov 2007 14:48:14 +0000 [thread overview]
Message-ID: <20071128144814.GA29715@linux-mips.org> (raw)
In-Reply-To: <20071128.234142.106261815.anemo@mba.ocn.ne.jp>
On Wed, Nov 28, 2007 at 11:41:42PM +0900, Atsushi Nemoto wrote:
> On Sun, 25 Nov 2007 11:47:56 +0100, Thomas Bogendoerfer <tsbogend@alpha.franken.de> wrote:
> > IP28 needs special treatment to avoid speculative accesses. gcc
> > takes care for .c code, but for assembly code we need to do it
> > manually.
> >
> > This is taken from Peter Fuersts IP28 patches.
> >
> > Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
> > ---
> > arch/mips/lib/memcpy.S | 10 ++++++++++
> > arch/mips/lib/memset.S | 5 +++++
> > arch/mips/lib/strncpy_user.S | 1 +
> > include/asm-mips/asm.h | 8 ++++++++
> > 4 files changed, 24 insertions(+), 0 deletions(-)
>
> I do not know details of this patch at all, but in general,
> memcpy-inatomic.S and csum_pertial.S are candidates if you changed
> memcpy.S.
tlbex.c may also need modifications.
Ralf
prev parent reply other threads:[~2007-11-28 14:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-25 10:47 [PATCH] IP28: added cache barrier to assembly routines Thomas Bogendoerfer
2007-11-28 9:53 ` Ralf Baechle
2007-11-28 14:41 ` Atsushi Nemoto
2007-11-28 14:48 ` Ralf Baechle [this message]
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