linux-kernel - Re: [PATCH] pcmcia: ppc64 needs 32-bit ioaddr

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Message-Id: <200706250335.56739.arnd@arndb.de>
Date:	Mon, 25 Jun 2007 03:35:56 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linuxppc-dev@...abs.org
Cc:	Olof Johansson <olof@...om.net>, linux-kernel@...r.kernel.org,
	linux-pcmcia@...ts.infradead.org, akpm@...l.org, paulus@...ba.org
Subject: Re: [PATCH] pcmcia: ppc64 needs 32-bit ioaddr_t

On Monday 25 June 2007, Olof Johansson wrote:
> ppc64 really needs ioaddr_t to be 32-bit, since I/O addresses really are
> MMIO addresses, and remapped at an offset that's well above 16 bits in
> some cases.
> 
> While the type is exported to userspace, there hasn't been any platforms
> with PCMCIA on 64-bit powerpc until now, so changing it won't regress
> any existing users.

I just realized that this argument is bogus, because the user space tools
are probably, or at least potentially, built as 32 bit binaries, which
means that any interface using these _will_ break.

However, I could not find any actual user space interfaces in 2.6.22-rc
that are built around ioaddr_t. What are they, or have the been removed
by now?

	Arnd <><
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