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Date: Thu, 30 Aug 2012 20:59:22 +0200
From: Stefan Priebe <s.priebe@profihost.ag>
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Subject: Re: [Qemu-devel] CPU hotplug
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To: Igor Mammedov <imammedo@redhat.com>
Cc: Bo Yang <BoYang@suse.com>, qemu-devel <qemu-devel@nongnu.org>, =?ISO-8859-1?Q?Andreas_F=E4rber?= <afaerber@suse.de>, Bruce Rogers <brogers@suse.com>

Am 30.08.2012 20:56, schrieb Igor Mammedov:
> On Thu, 30 Aug 2012 20:45:10 +0200
> Stefan Priebe <s.priebe@profihost.ag> wrote:
>
>> Am 30.08.2012 20:40, schrieb Igor Mammedov:
>>>>>> Am 30.08.2012 um 17:41 schrieb Andreas Färber <afaerber@suse.de>:
>>>>>>
>>>>>>> Am 30.08.2012 11:06, schrieb Stefan Priebe:
>>>>>>>> I tried latest 1.2rc1 kvm-qemu with vanilla kernel v3.5.2 but the VM
>>>>>>>> just crashes when sending cpu_set X online through qm monitor.
>>>>>>>
>>>>>>> For SLES we're carrying a patch by Kamalesh Babulal that prevents this
>>>>>>> (BNC#747339).
>>>>>>
>>>>>> But this just disables CPU [hotplug] and does Not fix it?
>>>>>
>>>>> It fixes the crash. Hotplug needs to be implemented first, and this has
>>>>> been taking several months already (for x86, to be specific).
>>>>
>>>> Mhm RHEL 6.3 claims to support this?
>>> it's not officially supported, it's just tech-preview. That allows to play with
>>> hotplug and uncover possible guest issues early.
>>
>> Yes, but does this mean that is doesn't work at RHEL too? i wasn't able
>> to get it working any guest or host at all.
> It works with RHEL 6.3 host/guest combo. Extra testing is greatly appreciated.

mhm OK. I'm using Debian Squeeze with qemu-kvm 1.2rc1 and vanilla kernel 
3.5.2 as guest AND host.

This just results in the known crash.

Stefan