** Description changed: - TODO current status in lunar and mainline. + SRU Justification - The following commits had to be backported to Jammy: + [Impact] + Usually backporting new features to existing kernels it's not a common practice. + But these commits were easy to pick. Some of the commits were already applied. + More information about backporting these commits is addressed inline. - 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. + [Commits] 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. - TODO check the actual commit + done in 528c9f1daf20d "perf/x86/cstate: Add SAPPHIRERAPIDS_X CPU support" + 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 + TODO not sure if this one is correct. 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 linux-next Had to apply the following: - 727209376f499 x86/split_lock: Add sysctl to control the misery mode - b041b525dab95 x86/split_lock: Make life miserable for split lockers - 054ed6349c1bd Documentation/x86: Update split lock documentation And manually solved a conflict due to missing: - d3287fb0d3c8a x86/microcode/intel: Expose collect_cpu_info_early() for IFS - 3f2adf00f52b5 x86/cpu: Use MSR_IA32_MISC_ENABLE constants - ef79970d7ccdc x86/split-lock: Remove unused TIF_SLD bit which are just small improvements and not critical. + TODO more explanation here 13. Add Emerald Rapids CPU model number ID for EDAC driver support: e4b2bc6616e21 clean cherry-pick Testing: Kernel was built on cbd. roxanan-jammy-cd5956c49599-A3Ur Regression potential Very very low, these are new features, nothing to regress here.
-- 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: SRU Justification [Impact] Usually backporting new features to existing kernels it's not a common practice. But these commits were easy to pick. Some of the commits were already applied. More information about backporting these commits is addressed inline. [Commits] 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. done in 528c9f1daf20d "perf/x86/cstate: Add SAPPHIRERAPIDS_X CPU support" 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 TODO not sure if this one is correct. 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 linux-next Had to apply the following: - 727209376f499 x86/split_lock: Add sysctl to control the misery mode - b041b525dab95 x86/split_lock: Make life miserable for split lockers - 054ed6349c1bd Documentation/x86: Update split lock documentation And manually solved a conflict due to missing: - d3287fb0d3c8a x86/microcode/intel: Expose collect_cpu_info_early() for IFS - 3f2adf00f52b5 x86/cpu: Use MSR_IA32_MISC_ENABLE constants - ef79970d7ccdc x86/split-lock: Remove unused TIF_SLD bit which are just small improvements and not critical. TODO more explanation here 13. Add Emerald Rapids CPU model number ID for EDAC driver support: e4b2bc6616e21 clean cherry-pick Testing: Kernel was built on cbd. roxanan-jammy-cd5956c49599-A3Ur 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
