| To: | Linux-MIPS <linux-mips@linux-mips.org> |
|---|---|
| Subject: | Re: [PATCH] Fix non-linear memory mapping on MIPS |
| From: | Sergei Shtylyov <sshtylyov@ru.mvista.com> |
| Date: | Sat, 27 May 2006 21:05:19 +0400 |
| Cc: | Manish Lachwani <mlachwani@mvista.com>, Jordan Crouse <jordan.crouse@amd.com>, Ralf Baechle <ralf@linux-mips.org> |
| In-reply-to: | <44772379.30903@ru.mvista.com> |
| Organization: | MontaVista Software Inc. |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <44772379.30903@ru.mvista.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mozilla/5.0 (X11; U; Linux i686; rv:1.7.2) Gecko/20040803 |
Hello. Sergei Shtylyov wrote: Fix the non-linear memory mapping done via remap_file_pages() -- it didn't work on any MIPS CPU because the page offset was clashing with _PAGE_FILE and some other page protection bits which should have been left zeros for this kind of pages. Actally, _PAGE_ACCESSED which as we initially thought needed preserving, should be usable as well, so I'll repost the patch that implements 28-bit page offsets for R3k and MIPS32 shortly... The patch has been tested on MIPS32, MIPS64, and Alchemy CPUs, only R3000/TX3927 part hasn't been tested for the lack of time... WBR, Sergei |
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