On Feb 11, 2019, Aaro Koskinen <aaro.koski...@iki.fi> wrote: > ATA (libata) CS5536 driver is having issues with spurious IRQs and often > disables IRQs completely during the boot. You should see a warning > in dmesg. This was the reason for slowness on my FuLoong mini-PC. A > workaround is to switch to old IDE driver.
Thanks. I see a NIEN quirk in ide-iops.c that's enabled for the hard drive model I've got on my yeeloong, but that's not even compiled in my freeloong builds. I don't see any changes in libata between 4.19 and 4.20 that could explain the regression either. I'm afraid there's no observable change in behavior after installing the proposed patch at https://lore.kernel.org/linux-mips/20190106124607.gk27...@darkstar.musicnaut.iki.fi/ The kernel still disables irq14 early on, and then runs slow. Tom, why do you say bisecting this is impossible? I realize you wrote you did so for 24 hours non-stop, but... I'm curious as to what obstacles you ran into. It's such a reproducible problem for me that I can't see how bisecting it might be difficult. Or were by any chance you talking about the reboot/shutdown problem then? -- Alexandre Oliva, freedom fighter https://FSFLA.org/blogs/lxo Be the change, be Free! FSF Latin America board member GNU Toolchain Engineer Free Software Evangelist Hay que enGNUrecerse, pero sin perder la terGNUra jamás-GNUChe
