Re: [PATCH] x86, acpi memory hotplug, add parameter to disable memory hotplug

Prarit Bhargava
2014-01-14T10:58:19Z

On 01/13/2014 09:43 PM, Yasuaki Ishimatsu wrote:
> (2014/01/14 10:41), Toshi Kani wrote:
>> On Tue, 2014-01-14 at 10:11 +0900, Yasuaki Ishimatsu wrote:
>> :
>>>>> I think we need a knob manually enable mem-hotplug when specify memmap. But
>>>>> it is another story.
>>>>>
>>>>> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
>>>>
>>>> As mentioned, self-NAK. I have seen a system that I needed to specify
>>>> memmap=exactmap & had hotplug memory. I will only keep the acpi_no_memhotplug
>>>> option in the next version of the patch.
>>>
>>>
>>> Your following first patch is simply and makes sense.
>>>
>>> http://marc.info/?l=linux-acpi&m=138922019607796&w=2
>>>
>>
>> In this option, it also requires changing kexec-tools to specify the new
>> option for kdump. It won't be simpler.
>
> Hmm.
> I use memm= boot option and hotplug memory for memory hot-remove.
> At least, the patch cannot be accepted.

Thanks for the information Yasuaki. I will resubmit my first patch that only
adds the kernel parameter.

P.

>
> Thanks,
> Yasuaki Ishimatsu
>
>>
>> Thanks,
>> -Toshi
>>
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