** Information type changed from Private to Public -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1905021
Title: [21.10 FEAT] zKVM: Spinlock Yield Forwarding Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Committed Bug description: In a spinlock situation DIAG 9C is used by Linux to yield a CPU if it detects that the CPU is not running via SIGP Sense Running. In KVM it can happen that the VCPU is running but its backing thread is scheduled on a host CPU that is not running itself. In this case the host should issue a DIAG 9C for this CPU. Value: Better overall performance due to reduced lock contention. Feature will be provided via kernel >= 5.11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1905021/+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
