linux-kernel - Re: MMIO and gcc re-ordering issue

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Message-ID: <Pine.LNX.4.64.0805301120510.26332@anakin>
Date:	Fri, 30 May 2008 11:22:19 +0200 (CEST)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
cc:	benh@...nel.crashing.org, Matthew Wilcox <matthew@....cx>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, linux-arch@...r.kernel.org,
	scottwood@...escale.com, linuxppc-dev@...abs.org,
	alan@...rguk.ukuu.org.uk, linux-kernel@...r.kernel.org,
	tpiepho@...escale.com
Subject: Re: MMIO and gcc re-ordering issue

On Fri, 30 May 2008, Haavard Skinnemoen wrote:
> Maybe we need another interface that does not do byteswapping but
> provides stronger ordering guarantees?

The byte swapping depends on the device/bus.

So what happened to the old idea of putting the accessor function pointers
in the device/bus structure?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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