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Re: [PATCH] fix pfn_pte for 64BIT_PHYS_ADDR

To: Andrew Isaacson <adi@broadcom.com>
Subject: Re: [PATCH] fix pfn_pte for 64BIT_PHYS_ADDR
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 17 Aug 2005 11:16:53 +0100
Cc: linux-mips@linux-mips.org
In-reply-to: <20050817061232.GN24444@broadcom.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20050817061232.GN24444@broadcom.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.4.2.1i
On Tue, Aug 16, 2005 at 11:12:32PM -0700, Andrew Isaacson wrote:

> On CONFIG_64BIT_PHYS_ADDR, pfn always fits in 'unsigned long', but
> pfn<<PAGE_SHIFT sometimes extends beyond.  The pte is big enough to hold
> 'long long', but the shift in pfn_pte() needs to do its calculation with
> enough bits to hold the result.

Thanks, applied also.

  Ralf

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