Kernel: Linux 5.9 Features and Linux Plumbers Releasing More Passes
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Intel Adds Capability To Linux 5.9 For NVDIMM Firmware Updates Without Reboots
For Intel NVDIMMs like DC Persistent Memory there is support on the way with Linux 5.9 to support firmware updates to the non-volatile memory device without the need for a system reboot.
The LIBNVDIMM changes for Linux 5.9 include "Runtime Firmware Activation" as the Intel-devised feature for accommodating device firmware updates to supported NVDIMM modules without needing a reboot. The intent is on being less disruptive than a reboot and allow loading the firmware still via the ndctl user-space utility and then the new ability to "activate" the new firmware.
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F2FS With Linux 5.9 Adds Secure TRIM, New Garbage Collection Option
The Flash-Friendly File-System (F2FS) changes have been sent in for the in-development Linux 5.9 kernel.
The prominent changes this cycle include a new garbage collection mode (GC_URGENT_LOW) and a "secure" TRIM option (F2FS_IOC_SEC_TRIM_FILE) in the name of security.
The F2FS_IOC_SEC_TRIM_FILE functionality is intended as secure erase functionality. For drives not supporting TRIM/DISCARD, zeroing out the given data range for the regular file is performed to ensure the data is wiped on disk.
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Linux 5.9 Bringing Mellanox VDPA Driver For Newer ConnectX Devices
There are a few changes worth mentioning out of the VirtIO updates submitted today for the Linux 5.9 kernel.
The latest Mellanox driver going mainline in the Linux kernel is a VDPA (Virtual Data Path Acceleration) for their ConnectX6 DX and newer devices.
The VDPA standard is an abstraction layer on top of SR-IOV and allows for a single VirtIO driver in the guest that isn't hardware specific while still allowing wire-speed performance on the data plane. VDPA is more versatile than the likes of VirtIO full hardware offloading. More details for those interested via this Red Hat post.
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Linux Plumbers Releasing More Passes
After a careful review we have decided to release more passes. We are thrilled with the interest for this first ever online Linux Plumbers. The highlight of Linux Plumbers is the microconferences which are heavily focused on discussion and problem solving. To give the best experience for discussion, we have chosen to use an open source virtual platform that offers video for all participants. The platform recommends not having more than a certain number of people in each room at a time, hence putting a cap on registration to avoid hitting that limit. We do have solutions that will hopefully allow as many people as possible to experience Plumbers. We appreciate your patience and enthusiasm.
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