From: "Dave Airlie" <airlied@gmail.com>
To: Linux Memory Management <linux-mm@kvack.org>
Subject: removing pages from the kernel mappings completely....
Date: Mon, 30 Jun 2008 11:37:34 +1000 [thread overview]
Message-ID: <21d7e9970806291837y39221513i8537fe361f23eeeb@mail.gmail.com> (raw)
Another thing we are contemplating to avoid having to do a lot of
changes to kernel mappings to move pages from cached to uncached
mappings, is to use highmem pages where we can, but also remove a set
of pages from the kernel page mappings if we didn't have any highmem.
This would allow us to remove those pages when we bring pages into a
pool, and then we can control the userspace and kernel maps of these
pages for cached/uncached uses from that point on, without having to
go through a page remapping for the kernel pages every time.
Dave.
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reply other threads:[~2008-06-30 1:37 UTC|newest]
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