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Re: [Qemu-devel] [RFC PATCH] numa: enable sparse node numbering
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From: |
Alexey Kardashevskiy |
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Subject: |
Re: [Qemu-devel] [RFC PATCH] numa: enable sparse node numbering |
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Date: |
Tue, 24 Jun 2014 18:58:09 +1000 |
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User-agent: |
Mozilla/5.0 (X11; Linux i686 on x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
On 06/24/2014 05:33 PM, Igor Mammedov wrote:
> On Mon, 23 Jun 2014 12:33:10 -0700
> Nishanth Aravamudan <address@hidden> wrote:
>
>> Add a present field to NodeInfo which indicates if a given nodeid was
>> present on the command-line or not. Current code relies on a memory
>> value being passed for a node to indicate presence, which is
>> insufficient in the presence of memoryless nodes or sparse numbering.
>> Adjust the iteration of various NUMA loops to use the maximum known NUMA
>> ID rather than the number of NUMA nodes.
> Why would you need sparse numbering?
> What task exactly are you trying to solve?
This is to reproduce+debug the real POWERPC hardware behavior. No practical
use as far as I can tell.
--
Alexey