Public bug reported: [Impact] On arm64/ACPI-based servers, such as the QDT2400 and HiSilicon D05, there is a watchdog feature based on the architected timer that is not usable in Ubuntu. This prevents these systems from using this facility to automatically recover from a hard lockup.
[Test Case] sudo modprobe sbsa-gwdt ls -l /dev/watchdog* [Regression Risk] The changes required are to the ARM architected timer driver and some new code to parse the configuration data from the ACPI GTDT table. These changes only apply to ARM-specific code, so the risk is limited to those platforms. This has been tested on the QDT2400 and HiSilicon D05, and regression tested on an non-ACPI (devicetree) HP m400 and Cavium ThunderX systems. ** Affects: linux (Ubuntu) Importance: High Assignee: dann frazier (dannf) Status: In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1688114 Title: arm64/ACPI support for SBSA watchdog To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1688114/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs