From: Laura Abbott <lauraa@codeaurora.org>
To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org
Cc: Kyungmin Park <kmpark@infradead.org>,
Russell King <linux@arm.linux.org.uk>
Subject: [RFC PATCHv2 0/4] Intermix Lowmem and Vmalloc
Date: Tue, 12 Nov 2013 14:27:28 -0800 [thread overview]
Message-ID: <1384295252-31778-1-git-send-email-lauraa@codeaurora.org> (raw)
Hi,
This is v2 of a patch series to allow lowmem and vmalloc to be
intermixed (http://lists.infradead.org/pipermail/linux-arm-kernel/2013-November/210578.html
provides the full decriptions which I've omitted here for brevity)
Nots I forgot to mention before:
- as a side effect of how CMA is setup, the remapped lowmem regions are
explicitly printed out in /proc/vmallocinfo which has turned out to be useful
for debugging. I couldn't find a good way to support those and the lowmem
regions in vmalloc short of adding partial region unmapping.
- I still have a nagging concern about regions that straddle the lowmem/highmem
boundary causing problems. I haven't been able to find a concrete issue yet
though..
v2: Fixed several comments by Kyungmin Park which led me to discover
several issues with the is_vmalloc_addr implementation. is_vmalloc_addr
is probably the ugliest part of the entire series and I debated if
adding extra vmalloc flags would make it less ugly.
Again, comments or suggestions on how to better accomplish this are welcome.
Thanks,
Laura
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next reply other threads:[~2013-11-12 22:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 22:27 Laura Abbott [this message]
2013-11-12 22:27 ` [RFC PATCHv2 1/4] arm: mm: Add iotable_init_novmreserve Laura Abbott
2013-11-12 22:27 ` [RFC PATCHv2 2/4] arm: mm: Track lowmem in vmalloc Laura Abbott
2013-11-12 22:27 ` [RFC PATCHv2 3/4] mm/vmalloc.c: Allow lowmem to be tracked " Laura Abbott
2013-11-12 22:27 ` [RFC PATCHv2 4/4] mm/vmalloc.c: Treat the entire kernel virtual space as vmalloc Laura Abbott
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