CMNT: [SRU][n/m/j:oracle][PATCH 0/1] [arm64] Increase max CPU count to 512

[John Cabaj]

On 12/12/23 1:42 AM, Stefan Bader wrote:
> On 11.12.23 20:48, John Cabaj wrote:
>> BugLink: https://bugs.launchpad.net/bugs/2046184
>>
>> [Impact]
>>
>> * Request to accommodate new shape with 320 CPUs, greater than current max value of 256.
>>
>> [Fix]
>>
>> * Update CONFIG_NR_CPUS from 256 to 512 for arm64 arch.
>>
>> [Test Case]
>>
>> * Compile tested
>> * Boot tested
>>
>> [Where things could go wrong]
>>
>> * Low chance of regression. Simple config change.
>>
>> [Other Info]
>>
>> * Change proposed in Debian unstable (https://salsa.debian.org/kernel-team/linux/-/merge_requests/937?commit_id=8dfba66465dbf4c3c8ef8998065805b852b34e22#fc973071e6f4da49be1ec7a17e00635dd41dcaf1), but was denied due to additional kernel size. This shouldn't affect Ubuntu kernel so much as it's compressed.
>> * SF #00375112
>>
>> John Cabaj (1):
>>    UBUNTU: [Config]: oracle: Increase max CPU count to 512
>>
>>   debian.oracle/config/annotations | 3 +++
>>   1 file changed, 3 insertions(+)
>>
> 
> Submission mentions N/M/J but bug report only N/M. Lunar missing in both (Which can be a deliberate decision since Lunar is EOL soon and the rolling cloud kernel in Jammy is Mantic. But there is no reasoning seen in the submission)

Jammy was requested late - updated the LP bug along with rationale for not including Lunar.

> 


Thanks,
John