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Date: Fri, 6 Jun 2014 10:02:42 +0100 (BST)
From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: "H. Peter Anvin" <hpa@zytor.com>
cc: Josh Triplett <josh@joshtriplett.org>, Jann Horn <jann@thejh.net>,
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Subject: Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit
 and 32-bit ports
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On Wed, 4 Jun 2014, H. Peter Anvin wrote:

> > Also IIRC PCI-PCI bridges only forward port I/O space accesses 
> > within the low 64kB.
> 
> Not true.

 It must have been an implementation-specific constraint then (e.g. 
DECchip 21050), it's been a while since I looked into it.  Thanks for 
straightening me out.

  Maciej