Re: [PATCH 2/2] x86, e820 disable ACPI Memory Hotplug if memory mappingis specified by user [v2]

[H. Peter Anvin]

On 01/13/2014 04:33 PM, Toshi Kani wrote:
> 
> I do not think it makes sense.  You needed memmap=exactmap as a
> workaround because the kernel did not boot with the firmware's memory
> info.  So, it's broken, and you requested the kernel to ignore the
> firmware info.
> 
> Why do you think memory hotplug needs to be supported under such
> condition, which has to use the broken firmware info?
> 

Even more than memory hotplug: what do we do with NUMA?  Since we have
already told the kernel "the firmware is bogus" it would seem that any
NUMA optimizations would be a bit ... cantankerous at best, no?

	-hpa


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