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From: "David S. Miller" <davem@redhat.com>
To: Paul Jackson <pj@sgi.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Does io_remap_page_range() take 5 or 6 args?
Date: Wed, 18 Aug 2004 13:54:01 -0700	[thread overview]
Message-ID: <20040818135401.670f11bd.davem@redhat.com> (raw)
In-Reply-To: <20040818133348.7e319e0e.pj@sgi.com>

On Wed, 18 Aug 2004 13:33:48 -0700
Paul Jackson <pj@sgi.com> wrote:

> Does anyone know the story behind this odd inconsistency?

Each platform needs different args, unfortunately.

Sparc needs the extra arg because the device space is described
with a base 32-bit address, then an upper 32-bit base to form
the full 64-bit address.  This upper 32-bit part is called the
"io_space" and thus is what gets passed into that 6-th argument.

  parent reply	other threads:[~2004-08-18 20:57 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-18 20:33 Paul Jackson
2004-08-18 20:53 ` William Lee Irwin III
2004-08-18 20:55   ` David S. Miller
2004-08-18 20:56   ` David S. Miller
2004-08-18 21:05     ` William Lee Irwin III
2004-08-18 21:30       ` David S. Miller
2004-08-18 21:40         ` William Lee Irwin III
2004-08-18 22:00           ` William Lee Irwin III
2004-08-18 22:59             ` William Lee Irwin III
2004-08-18 23:16               ` David S. Miller
2004-08-18 23:33                 ` William Lee Irwin III
2004-08-19  2:38                   ` William Lee Irwin III
2004-08-19  2:43                     ` David S. Miller
2004-08-19  2:51                       ` William Lee Irwin III
2004-08-18 21:36       ` Richard B. Johnson
2004-08-18 20:54 ` David S. Miller [this message]
2004-08-18 21:15   ` Paul Jackson
2004-08-18 21:35     ` William Lee Irwin III

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