|Subject:||Re: [PATCH] Fix non-linear memory mapping on MIPS|
|From:||Sergei Shtylyov <firstname.lastname@example.org>|
|Date:||Sat, 27 May 2006 21:05:19 +0400|
|Cc:||Manish Lachwani <email@example.com>, Jordan Crouse <firstname.lastname@example.org>, Ralf Baechle <email@example.com>|
|Organization:||MontaVista Software Inc.|
|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...
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