Dear Tony,
> -----Original Message-----
> From: Luck, Tony [mailto:tony.l...@intel.com]
> Sent: Friday, October 23, 2015 8:27 AM
> To: Kamezawa, Hiroyuki/亀澤 寛之; Izumi, Taku/泉 拓; linux-kernel@vger.kernel.org;
> linux...@kvack.org
> Cc: qiuxi...@huawei.com; m...@csn.ul.ie; a...@linux-foundation.org; Hansen,
> Dave; m...@codeblueprint.co.uk
> Subject: RE: [PATCH] mm: Introduce kernelcore=reliable option
>
> > I think /proc/zoneinfo can show detailed numbers per zone. Do we need some
> > for meminfo ?
>
> I wrote a little script (attached) to summarize /proc/zoneinfo ... on my
> system it says
>
> $ zoneinfo
> Node Normal Movable DMA DMA32
> 0 0.00 103020.07 8.94 1554.46
> 1 9284.54 89870.43
> 2 9626.33 94050.09
> 3 9602.82 93650.04
>
> Not sure why I have zero Normal memory free on node0. The sum of all those
> free counts is 410667.72 MB ... which is close enough to the boot time message
> showing the amount of mirror/total memory:
>
> [ 0.000000] efi: Memory: 80979/420096M mirrored memory
>
> but a fair amount of the 80G of mirrored memory seems to have been miscounted
> as Movable instead of Normal. Perhaps this is because I have two blocks of
> mirrored
> memory on each node and the movable zone code doesn't expect that?
You were saying that OS view of memory of node is something like the following
?
Node X: |MMMMMM------MMMMMM--------|
(legend) M: mirrored -: not mirrrored
If so, is this a real Box's configuration?
Sorry, I haven't got a real Address Range Mirror capable boxes yet ...
I thought mirroring range is concatenated at the first part of each node.
Sincerely,
Taku Izumi
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