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Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework

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From: Minchan Kim
Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework
Date: Thursday, August 26, 2010 - 3:21 am

On Thu, Aug 26, 2010 at 7:06 PM, Peter Zijlstra <peterz@infradead.org> wrote:

It's another topic.
I agree highmem isn't a gorgeous. But my desktop isn't real machine?
Important thing is that we already have a highmem and many guys
include you(kmap stacking patch :))try to improve highmem problems. :)


No. Until now, many embedded devices have used to small memory. In
that case, only there is a DMA zone in system. But as I know, mobile
phone starts to use big(?) memory like 1G or above sooner or later. So
they starts to use HIGHMEM. Otherwise, 2G/2G space configuration.
Some embedded device uses many thread model to port easily from RTOS.
In that case, they don't have enough address space for application if
it uses 2G/2G model.

So we should care of HIGHMEM in embedded system from now on.



-- 
Kind regards,
Minchan Kim
--
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Messages in current thread:
[PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 1/6] lib: rbtree: rb_root_init() function added, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator added, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 3/6] mm: cma: Added SysFS support, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 4/6] mm: cma: Added command line parameters s ..., Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 5/6] mm: cma: Test device and application added, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
[PATCH/RFCv4 6/6] arm: Added CMA to Aquila and Goni, Michal Nazarewicz, (Fri Aug 20, 2:50 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Fri Aug 20, 6:15 am)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Konrad Rzeszutek Wilk, (Wed Aug 25, 1:32 pm)
Re: [PATCH/RFCv4 3/6] mm: cma: Added SysFS support, Konrad Rzeszutek Wilk, (Wed Aug 25, 1:37 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Andrew Morton, (Wed Aug 25, 3:58 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Daniel Walker, (Wed Aug 25, 4:26 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Jonathan Corbet, (Wed Aug 25, 4:31 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Wed Aug 25, 5:58 pm)
Re: [PATCH/RFCv4 3/6] mm: cma: Added SysFS support, Michał Nazarewicz, (Wed Aug 25, 6:20 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Pawel Osciak, (Wed Aug 25, 6:22 pm)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Michał Nazarewicz, (Wed Aug 25, 6:22 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 6:28 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 6:38 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Pawel Osciak, (Wed Aug 25, 6:38 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 6:49 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 7:12 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 7:40 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Wed Aug 25, 7:49 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Wed Aug 25, 7:50 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Wed Aug 25, 8:04 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Wed Aug 25, 8:44 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Wed Aug 25, 9:01 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Wed Aug 25, 9:06 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Wed Aug 25, 9:14 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Wed Aug 25, 9:30 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Wed Aug 25, 9:39 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Américo Wang, (Wed Aug 25, 10:54 pm)
[PATCH/RFCv4.1 2/6] mm: cma: Contiguous Memory Allocator added, Michal Nazarewicz, (Wed Aug 25, 11:25 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Thu Aug 26, 1:17 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Thu Aug 26, 1:18 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Thu Aug 26, 1:20 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Thu Aug 26, 2:29 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Thu Aug 26, 2:36 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Thu Aug 26, 3:06 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Mel Gorman, (Thu Aug 26, 3:12 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Mel Gorman, (Thu Aug 26, 3:18 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Thu Aug 26, 3:21 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Thu Aug 26, 4:05 am)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Mel Gorman, (Thu Aug 26, 6:47 am)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Michał Nazarewicz, (Thu Aug 26, 7:09 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Michał Nazarewicz, (Thu Aug 26, 7:41 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Fri Aug 27, 1:16 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Fri Aug 27, 1:37 am)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Hans Verkuil, (Sat Aug 28, 5:37 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Hans Verkuil, (Sat Aug 28, 6:08 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Sat Aug 28, 6:34 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Hans Verkuil, (Sat Aug 28, 6:58 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Peter Zijlstra, (Sat Aug 28, 7:16 am)
Re: [PATCH/RFCv4 2/6] mm: cma: Contiguous Memory Allocator ..., Michał Nazarewicz, (Sat Aug 28, 6:48 pm)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Clemens Ladisch, (Mon Aug 30, 1:27 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Thu Sep 2, 1:54 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Fri Sep 3, 3:29 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., Minchan Kim, (Sun Sep 5, 8:57 am)
Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator fram ..., KAMEZAWA Hiroyuki, (Sun Sep 5, 5:08 pm)