Public bug reported: TODO current status in lunar and mainline.
The following commits had to be backported to Jammy: Usually backporting new features to existing kernels it's not a common practice. But these backports were easy to pick. Some of the commits were already applied. More information about backporting these commits is addressed inline. 1. Add New CPU Model Number for EMR in Core Kernel: 7beade0dd41d Already applied to jammy. Picked up in v5.15.80 upstream stable release https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2003122 2. Linux kernel: add EMR support to uncore-frequency driver: 9c252ecf3036 Had to adjust the path to uncore-frequency.c In ce2645c458b5c83b0872ea9e39d2c3293445353a commit, this was moved to uncore-frequency dir 3. PMU Update to Support New EMR CPU model Number: 3.1 5268a2842066c227e6ccd94bac562f1e1000244f already applied from 5.15.91 upstream https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2011467 3.2 5a8a05f165fb18d37526062419774d9088c2a9b9 Small adjustment needed because saphire, raptor changes were not there. 3.3 6795e558e9cc6123c24e2100a2ebe88e58a792bc already applied from 5.15.93 upstream https://bugs.launchpad.net/bugs/2012665 3.4 69ced4160969025821f2999ff92163ed26568f1c already applied in 5.15.91 https://bugs.launchpad.net/bugs/2011467 4. Perf RAPL PMU support on EMR: 57512b57dcfaf63c52d8ad2fb35321328cde31b0 Manually solved small conflict due to missing 80275ca9e525c where a fixed DRAM domain energy unit is introduced 5. linux kernel: add EMR support to the intel_idle driver: 74528edfbc664f9d2c927c4e5a44f1285598ed0f clean cherry-pick 6. intel-speed-select tool support for EMR: 61f9fdcdcd01f9a996b6db4e7092fcdfe8414ad5 clean cherry-pick 7. Turbostat support on EMR: 93cac4150727dae0ee89f501dd75413b88eedec0 clean cherry-pick 8. intel-RAPL drivers to support new EMR CPU model number: 7adc6885259edd4ef5c9a7a62fd4270cf38fdbfb clean cherry-pick 9. Provide accel-config for EMR : TODO userspace - this is user-space code, not kernel code (accel-config seems the package that we already have in lunar, sync'ed from Debian, not sure if we need to provide additional changes applied or if we need to backport the whole user-space package to jammy) 10. Enable in-field Array BIST for EMR code is still in the process of being reviewed, we shouldn't apply/backport this for now 11. CXL 1.1 Compatibility ECN Very big patch -- won't port it to jammy 12. Split Lock detection change for EMR: d7ce15e1d4162ab5e56dead10d4ae69a6b5c8ee8 TODO linux-next only 13. Add Emerald Rapids CPU model number ID for EDAC driver support: e4b2bc6616e21 clean cherry-pick Testing: Kernel was built on cbd. roxanan-jammy-63b23a4757ba-H6S4 TODO qemu Regression potential Very very low, these are new features, nothing to regress here. ** Affects: linux (Ubuntu) Importance: Medium Assignee: Roxana Nicolescu (roxanan) Status: In Progress ** Affects: linux (Ubuntu Jammy) Importance: Medium Status: New ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Jammy) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Roxana Nicolescu (roxanan) ** Changed in: linux (Ubuntu) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2015372 Title: Add support for intel EMR cpu Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: New Bug description: TODO current status in lunar and mainline. The following commits had to be backported to Jammy: Usually backporting new features to existing kernels it's not a common practice. But these backports were easy to pick. Some of the commits were already applied. More information about backporting these commits is addressed inline. 1. Add New CPU Model Number for EMR in Core Kernel: 7beade0dd41d Already applied to jammy. Picked up in v5.15.80 upstream stable release https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2003122 2. Linux kernel: add EMR support to uncore-frequency driver: 9c252ecf3036 Had to adjust the path to uncore-frequency.c In ce2645c458b5c83b0872ea9e39d2c3293445353a commit, this was moved to uncore-frequency dir 3. PMU Update to Support New EMR CPU model Number: 3.1 5268a2842066c227e6ccd94bac562f1e1000244f already applied from 5.15.91 upstream https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2011467 3.2 5a8a05f165fb18d37526062419774d9088c2a9b9 Small adjustment needed because saphire, raptor changes were not there. 3.3 6795e558e9cc6123c24e2100a2ebe88e58a792bc already applied from 5.15.93 upstream https://bugs.launchpad.net/bugs/2012665 3.4 69ced4160969025821f2999ff92163ed26568f1c already applied in 5.15.91 https://bugs.launchpad.net/bugs/2011467 4. Perf RAPL PMU support on EMR: 57512b57dcfaf63c52d8ad2fb35321328cde31b0 Manually solved small conflict due to missing 80275ca9e525c where a fixed DRAM domain energy unit is introduced 5. linux kernel: add EMR support to the intel_idle driver: 74528edfbc664f9d2c927c4e5a44f1285598ed0f clean cherry-pick 6. intel-speed-select tool support for EMR: 61f9fdcdcd01f9a996b6db4e7092fcdfe8414ad5 clean cherry-pick 7. Turbostat support on EMR: 93cac4150727dae0ee89f501dd75413b88eedec0 clean cherry-pick 8. intel-RAPL drivers to support new EMR CPU model number: 7adc6885259edd4ef5c9a7a62fd4270cf38fdbfb clean cherry-pick 9. Provide accel-config for EMR : TODO userspace - this is user-space code, not kernel code (accel-config seems the package that we already have in lunar, sync'ed from Debian, not sure if we need to provide additional changes applied or if we need to backport the whole user-space package to jammy) 10. Enable in-field Array BIST for EMR code is still in the process of being reviewed, we shouldn't apply/backport this for now 11. CXL 1.1 Compatibility ECN Very big patch -- won't port it to jammy 12. Split Lock detection change for EMR: d7ce15e1d4162ab5e56dead10d4ae69a6b5c8ee8 TODO linux-next only 13. Add Emerald Rapids CPU model number ID for EDAC driver support: e4b2bc6616e21 clean cherry-pick Testing: Kernel was built on cbd. roxanan-jammy-63b23a4757ba-H6S4 TODO qemu Regression potential Very very low, these are new features, nothing to regress here. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2015372/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
