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Re: [PATCH] MIPS: Two-level pagetables for 64-bit kernels with 64KB page

To: David Daney <ddaney@caviumnetworks.com>
Subject: Re: [PATCH] MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.
From: Ralf Baechle <ralf@linux-mips.org>
Date: Sat, 19 Dec 2009 22:02:19 +0000
Cc: linux-mips@linux-mips.org
In-reply-to: <1259963556-6876-1-git-send-email-ddaney@caviumnetworks.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1259963556-6876-1-git-send-email-ddaney@caviumnetworks.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.20 (2009-08-17)
On Fri, Dec 04, 2009 at 01:52:36PM -0800, David Daney wrote:

> For 64-bit kernels with 64KB pages and two level page tables, there
> are 42 bits worth of virtual address space This is larger than the 40
> bits of virtual address space obtained with the default 4KB Page size
> and three levels, so there are no draw backs for using two level
> tables with this configuration.

Queued for 2.6.34,

  Ralf

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