On 10.04.19 21:27, John David Anglin wrote: > On 2019-04-10 3:10 p.m., John David Anglin wrote: >> Was merced bus used on PA 1.x? If not, then the locks could be >> removed. > Openpa states that merced bus was used in L1500, L3000 and N4000. All are Pa 2.0, > so locks are not needed. And according to https://www.openpa.net/pa-risc_chipsets_stretch.html it seems that a IKE I/O controller is used on Stretch only. So, detecting an IKE should be sufficient to check if we need to avoid multiple TLB flushed on the bus... Helge ftp://parisc.parisc-linux.org/dmesg/rp5470_3.10.dmesg
