Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports

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Subject: Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Wed, 04 Jun 2014 15:59:19 -0700
Cc: Jann Horn <jann@xxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, akpm@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-api@xxxxxxxxxxxxxxx
In-reply-to: <alpine.LFD.2.11.1406011101400.30121@eddie.linux-mips.org>
References: <20140509191914.GA7286@jtriplet-mobl1> <20140510070742.GE6099@debjann.fritz.box> <20140510193246.GA12079@thin> <20140511125006.GA16197@debjann.fritz.box> <20140511210514.GB6056@thin> <alpine.LFD.2.11.1406011101400.30121@eddie.linux-mips.org>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

On 06/01/2014 03:35 AM, Maciej W. Rozycki wrote:
> Also IIRC PCI-PCI bridges only forward port I/O space accesses 
> within the low 64kB.

Not true.

	-hpa

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Follow-Ups:
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Maciej W. Rozycki

References:
- [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Josh Triplett
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Jann Horn
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Josh Triplett
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Jann Horn
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Josh Triplett
- Re: [PATCH] drivers/char/mem.c: Add /dev/ioports, supporting 16-bit and 32-bit ports
  - From: Maciej W. Rozycki

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