Public bug reported: Please update the ena driver in the default AWS images to 2.10.x or later. This is to enable use of the PTP hardware clock (PHC) for high resolution timekeeping. https://github.com/amzn/amzn- drivers/tree/master/kernel/linux/ena#ptp-hardware-clock-phc
Ideally it would be accompanied with a configuration which sets `option phc_enable 1` in `/etc/modprobe.d/`, reads the error bound from `/sys/devices/pci0000:00/0000:00:05.0/phc_error_bound` and adds an appropriate chrony config snippet to `/etc/chrony/conf.d/` to use this as a source per https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set- time.html#ptp-hardware-clock-requirements, but just making the driver available for users to configure would be a good step. This is only relevant on r7g instances in ap-northeast-1 (Tokyo) at the moment, but is apparently rolling out to other instances and regions. https://aws.amazon.com/about-aws/whats-new/2023/11/amazon-time-sync- service-microsecond-accurate-time/ ** Affects: linux-aws (Ubuntu) Importance: Undecided Status: New ** Description changed: Please update the ena driver in the default AWS images to 2.10.x or later. This is to enable use of the PTP hardware clock (PHC) for high resolution timekeeping. https://github.com/amzn/amzn- drivers/tree/master/kernel/linux/ena#ptp-hardware-clock-phc Ideally it would be accompanied with a configuration which sets `option - phc_enable 1`, reads the error bound from + phc_enable 1` in `/etc/modprobe.d/`, reads the error bound from `/sys/devices/pci0000:00/0000:00:05.0/phc_error_bound` and adds an appropriate chrony config snippet to `/etc/chrony/conf.d/` to use this as a source per https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set- time.html#ptp-hardware-clock-requirements, but just making the driver available for users to configure would be a good step. This is only relevant on r7g instances in ap-northeast-1 (Tokyo) at the moment, but is apparently rolling out to other instances and regions. https://aws.amazon.com/about-aws/whats-new/2023/11/amazon-time-sync- service-microsecond-accurate-time/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-aws in Ubuntu. https://bugs.launchpad.net/bugs/2054688 Title: Update ena to 2.10.x or later Status in linux-aws package in Ubuntu: New Bug description: Please update the ena driver in the default AWS images to 2.10.x or later. This is to enable use of the PTP hardware clock (PHC) for high resolution timekeeping. https://github.com/amzn/amzn- drivers/tree/master/kernel/linux/ena#ptp-hardware-clock-phc Ideally it would be accompanied with a configuration which sets `option phc_enable 1` in `/etc/modprobe.d/`, reads the error bound from `/sys/devices/pci0000:00/0000:00:05.0/phc_error_bound` and adds an appropriate chrony config snippet to `/etc/chrony/conf.d/` to use this as a source per https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/set-time.html#ptp- hardware-clock-requirements, but just making the driver available for users to configure would be a good step. This is only relevant on r7g instances in ap-northeast-1 (Tokyo) at the moment, but is apparently rolling out to other instances and regions. https://aws.amazon.com/about-aws/whats-new/2023/11/amazon- time-sync-service-microsecond-accurate-time/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/2054688/+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
