linux-kernel - Re: [Part1 PATCH v5 00/22] x86, ACPI, numa: Parse numa info earlier

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Date:	Thu, 20 Jun 2013 11:42:08 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Vasilis Liaskovitis <vasilis.liaskovitis@...fitbricks.com>
Cc:	Tang Chen <tangchen@...fujitsu.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Thomas Renninger <trenn@...e.de>,
	Jiang Liu <jiang.liu@...wei.com>,
	Wen Congyang <wency@...fujitsu.com>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>,
	Mel Gorman <mgorman@...e.de>, Minchan Kim <minchan@...nel.org>,
	mina86@...a86.com, gong.chen@...ux.intel.com, lwoodman@...hat.com,
	Rik van Riel <riel@...hat.com>, jweiner@...hat.com,
	Prarit Bhargava <prarit@...hat.com>,
	"the arch/x86 maintainers" <x86@...nel.org>,
	linux-doc@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux MM <linux-mm@...ck.org>
Subject: Re: [Part1 PATCH v5 00/22] x86, ACPI, numa: Parse numa info earlier

On Wed, Jun 19, 2013 at 3:05 AM, Vasilis Liaskovitis
<vasilis.liaskovitis@...fitbricks.com> wrote:
> On Tue, Jun 18, 2013 at 01:19:12PM -0700, Yinghai Lu wrote:
>> On Tue, Jun 18, 2013 at 10:10 AM, Vasilis Liaskovitis
>> <vasilis.liaskovitis@...fitbricks.com> wrote:
>> >> could be found at:
>> >>         git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-mm
>> >>
>> >> and it is based on today's Linus tree.
>> >>
>> >
>> > Has this patchset been tested on various numa configs?
>> > I am using linux-next next-20130607 + part1 with qemu/kvm/seabios VMs. The kernel
>> > boots successfully in many numa configs but while trying different memory sizes
>> > for a 2 numa node VM, I noticed that booting does not complete in all cases
>> > (bootup screen appears to hang but there is no output indicating an early panic)
>> >
>> > node0   node1    boots
>> > 1G      1G       yes
>> > 1G      2G       yes
>> > 1G      0.5G     yes
>> > 3G      2.5G     yes
>> > 3G      3G       yes
>> > 4G      0G       yes
>> > 4G      4G       yes
>> > 1.5G    1G       no
>> > 2G      1G       no
>> > 2G      2G       no
>> > 2.5G    2G       no
>> > 2.5G    2.5G     no
>> >
>> > linux-next next-20130607 boots al of these configs fine.
>> >
>> > Looks odd, perhaps I have something wrong in my setup or maybe there is a
>> > seabios/qemu interaction with this patchset. I will update if I find something.
>>
>> just tried 2g/2g, and it works on qemu-kvm:
>
> thanks for testing. If you can also share qemu/seabios versions you use (release
> or git commits), that would be helpful.

QEMU emulator version 1.5.50, Copyright (c) 2003-2008 Fabrice Bellard

it is at:
commit 7387de16d0e4d2988df350926537cd12a8e34206
Merge: b8a75b6 e73fe2b
Author: Anthony Liguori <aliguori@...ibm.com>
Date:   Fri Jun 7 08:40:52 2013 -0500

    Merge remote-tracking branch 'stefanha/block' into staging

start command:

#for 64bit numa
/usr/local/kvm/bin/qemu-system-x86_64 -L /usr/local/kvm/share/qemu
-enable-kvm -numa node,nodeid=0,cpus=0-1,mem=2048 -numa
node,nodeid=1,cpus=2-3,mem=2048 -smp sockets=2,cores=2,threads=1 -m
4096 -net nic,model=e1000,macaddr=00:1c:25:1c:13:e9 -net user -hda
/home/yhlu/data.dsk -cdrom
/home/yhlu/xx/xx/kernel/tip/linux-2.6/arch/x86/boot/image.iso -boot d
-serial telnet:127.0.0.1:4444,server -monitor stdio


>
> this is most likely some error on my setup, I 'll let you know if I conclude
> otherwise.
>
> thanks,
>
> - Vasilis
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