Re: [RFC] On the Current Troubles of Mainlining Loongson Platform Drivers

> > > > That doesn't seem to explain even a quiet boot up taking several times > > longer than 4.19, and package installation over an ethernet connection > > (thus not using the console) also taking several times longer. > > Maybe it's a slow disk? > > ATA (libata) CS5536 driver is having issues

Re: [REGRESSION 4.20-rc1] 45975c7d21a1 ("rcu: Define RCU-sched API in terms of RCU for Tree RCU PREEMPT builds")

> OK, thanks. This looks slightly different from the Loongson problem: > > - In Loongson, we don't get stuck in RCU, but in > cpufreq_dbs_governor_stop -> irq_work_sync(). > > - I run non-preemptible kernel, and my system still gets stuck. > > What is common is that it's UP with i8259 PIC. >