Public bug reported:

[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

** Affects: linux-oracle (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-oracle (Ubuntu Mantic)
     Importance: Undecided
         Status: New

** Affects: linux-oracle (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Also affects: linux-oracle (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: linux-oracle (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Description changed:

  [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
+ * 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 its compressed.
  * SF #00366439

** Description changed:

  [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 its compressed.
- * SF #00366439
+ * SF #00375112

** Description changed:

  [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 its compressed.
+ * 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

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oracle in Ubuntu.
https://bugs.launchpad.net/bugs/2046184

Title:
  [arm64] Increase max CPU count to 512

Status in linux-oracle package in Ubuntu:
  New
Status in linux-oracle source package in Mantic:
  New
Status in linux-oracle source package in Noble:
  New

Bug description:
  [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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-oracle/+bug/2046184/+subscriptions


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