New Release: Linux Kernel 5.16

Linux kernel 5.16 (available here) has been released. Highlights from a Linux on Z perspective are as follows:

• SMC-Rv2
  Similar to SMC-Dv2, SMC-Rv2 lifts the restriction that limited SMC-Rv1 peers to be in the same IP subnet. Currently requires a pair of RoCE Express and a pair of OSA adapters if combined with link group aka link failover support.
  
  
• Support for EID & SEID Management: Related to SMC-Rv2, we now support definition and removal of user EIDs (enterprise identifier). Furthermore, we can now also display and activate/deactivate the system EIDs.
     root@enterprise:~# smcd ueid add SITE-A
     root@enterprise:~# smcd ueid  
     SITE-A                           
     root@enterprise:~# smcd seid   
     IBM-SYSZ-ISMSEID000000002E488561 [enabled]
  Requires smc-tools v1.7.
  
  

• Transparent PCI Device Recovery: PCI devices experiencing an issue rooted in a hardware or firmware repair action will now automatically restore their previous state, trigger a recovery in Linux, and become usable again (instead of remaining in an offline state requiring intervention by an administrator). In particular, storage devices remain mounted, and network devices resume their connections.