From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Cc: Olof Johansson <olof@lixom.net>,
akpm@osdl.org, linux-pcmcia@lists.infradead.org,
paulus@samba.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pcmcia: ppc64 needs 32-bit ioaddr_t
Date: Mon, 25 Jun 2007 03:35:56 +0200 [thread overview]
Message-ID: <200706250335.56739.arnd@arndb.de> (raw)
In-Reply-To: <20070625005439.GA31289@lixom.net>
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 <><
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Cc: Olof Johansson <olof@lixom.net>,
linux-kernel@vger.kernel.org, linux-pcmcia@lists.infradead.org,
akpm@osdl.org, paulus@samba.org
Subject: Re: [PATCH] pcmcia: ppc64 needs 32-bit ioaddr_t
Date: Mon, 25 Jun 2007 03:35:56 +0200 [thread overview]
Message-ID: <200706250335.56739.arnd@arndb.de> (raw)
In-Reply-To: <20070625005439.GA31289@lixom.net>
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 <><
next prev parent reply other threads:[~2007-06-25 1:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-25 0:54 [PATCH] pcmcia: ppc64 needs 32-bit ioaddr_t Olof Johansson
2007-06-25 0:54 ` Olof Johansson
2007-06-25 1:35 ` Arnd Bergmann [this message]
2007-06-25 1:35 ` Arnd Bergmann
2007-06-25 2:42 ` Olof Johansson
2007-06-25 2:42 ` Olof Johansson
2007-06-25 5:53 ` Christoph Hellwig
2007-06-25 5:53 ` Christoph Hellwig
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