** Description changed: + Note: Updates are being staged at ppa:dannf/arm64-kdump. + [Impact] It is not possible to collect a kernel crash dump from a crashed arm64 server for later debugging. [Test Case] sudo apt install kdump-tools (reboot, so crashkernel= is added to the kernel commandline) echo c | sudo tee /proc/sysrq-trigger Crash dump should occur, with artifacts collected in /var/crash. [Regression Risk] - TBD + 3 patches here touch code outside of arch/arm64/: + + memblock: add memblock_clear_nomap() + This adds a new function with no callers, so regression risk is negligible. + (A later patch adds a call to it under arch/arm64/). + + memblock: add memblock_cap_memory_range() + This refactors some of the code in memblock_mem_limit_remove_map() into a new function. The only existing caller of memblock_mem_limit_remove_map() is under arch/arm64/, so the regression risk outside of arm64 is negligible. + + efi/libstub/arm*: Set default address and size cells values for an empty dtb + Because this code is for EFI platforms that support device-tree, it is de-facto ARM-specific (as noted in the patch title). + + For arm64, we have mitigated the risk by explicit regression testing on several platforms: + - Qualcomm QDF2400 + - Cavium ThunderX CRB1S + - HP m400 (X-Gene) + - HiSilicon D05 (Hi07)
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1694859 Title: arm64 kernel crashdump support To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1694859/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
