On Fri, Mar 20, 2020 at 08:28:30PM +0100, Sebastian Andrzej Siewior wrote: > Dear RT folks! > > I'm pleased to announce the v5.4.26-rt17 patch set. > > Changes since v5.4.26-rt16: > > - Revert the "cross CPU pagevec" access with a static key switch. The > old behaviour has been almost fully restored: There is no cross CPU > access of the local_lock. Instead the workqueue is scheduled on > remote CPU like in the !RT case. [try #2] This reversion fixes the oops I was getting when CONFIG_PREEMPT_RT=n, CONFIG_PREEMPT=y, with nohz_full operational, when the system is under heavy memory pressure (mem=4G on the kernel command line, 8 cpu setup, make -j11 kernel build).
