lkml.org 
[lkml]   [2020]   [Feb]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] arm64: Kconfig: Enable NODES_SPAN_OTHER_NODES config for NUMA
From
Date
Hi Will,

Do you have any comments?

Thanks
Hoan

On 2/6/20 12:01 PM, Hoan Tran wrote:
> Hi Will,
>
> On 2/6/20 2:23 AM, Will Deacon wrote:
>> On Mon, Feb 03, 2020 at 11:55:14AM -0800, Hoan Tran wrote:
>>> Some NUMA nodes have memory ranges that span other nodes.
>>> Even though a pfn is valid and between a node's start and end pfns,
>>> it may not reside on that node.
>>>
>>> This patch enables NODES_SPAN_OTHER_NODES config for NUMA to support
>>> this type of NUMA layout.
>>>
>>> Signed-off-by: Hoan Tran <Hoan@os.amperecomputing.com>
>>> ---
>>>   arch/arm64/Kconfig | 7 +++++++
>>>   1 file changed, 7 insertions(+)
>>>
>>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>>> index e688dfa..939d28f 100644
>>> --- a/arch/arm64/Kconfig
>>> +++ b/arch/arm64/Kconfig
>>> @@ -959,6 +959,13 @@ config NEED_PER_CPU_EMBED_FIRST_CHUNK
>>>   config HOLES_IN_ZONE
>>>       def_bool y
>>> +# Some NUMA nodes have memory ranges that span other nodes.
>>> +# Even though a pfn is valid and between a node's start and end pfns,
>>> +# it may not reside on that node.
>>> +config NODES_SPAN_OTHER_NODES
>>> +    def_bool y
>>> +    depends on ACPI_NUMA
>>> +
>>
>> I thought we agreed to do this in the core code?
>>
>> https://lore.kernel.org/lkml/1562887528-5896-1-git-send-email-Hoan@os.amperecomputing.com
>>
>
> Yes, but it looks like Thomas didn't agree to apply this patch into x86.
>
> https://lore.kernel.org/lkml/alpine.DEB.2.21.1907152042110.1767@nanos.tec.linutronix.de/
>
>
> Regards
> Hoan
>
>>
>> Will
>>

\
 
 \ /
  Last update: 2020-02-26 00:21    [W:0.067 / U:0.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site