linux-kernel - Re: [PATCH 2/4] x86: ioremap: fix physical address check

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Message-ID: <4C1646C4.1010002@zytor.com>
Date:	Mon, 14 Jun 2010 08:12:04 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, jbarnes@...tuousgeek.org
Subject: Re: [PATCH 2/4] x86: ioremap: fix physical address check

On 06/14/2010 01:27 AM, Kenji Kaneshige wrote:
> 
> Please ignore above. I misunderstood the architectural limit of physical
> address in x86 32-bit mode. It is not 40-bits, but 52-bits.
> 

Well, it can be anywhere from 32 to 52 bits, depending on the hardware.

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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