| 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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