On Fri, 7 Nov 2025, at 7:04 AM, Nick Bowler wrote:

Hi,

Hi Nick,

Many thanks for the issue report! It's pretty rare to get reports from hardware that old.

Unfortunately my Indy won't go over ARCS prom so I'm not in a position to debug this on my side. I have inspected the code again and I can't see anything preventing it to work on R4000 family.

Maybe we can revert this for non-MIPS64R1 system only so we can get something working for both old and new systems.

#regzbot introduced: 35ad7e181541aa5757f9f316768d3e64403ec843

Thanks

After a recent 6.1.y stable kernel update, my Indy (mips64 R4400SC) now just stops booting early, just before when I would normally see the kernel messages about mounting the root filesystem.

There are no further messages of any kind, and the boot process does not appear to ever complete. However, the kernel is not fully crashed, as it does respond to sysrq commands from the keyboard (and I do get output on the console from these).

I bisected to the following: 794b679a28bb59a4533ae39a7cf945b9d5bbe336 is the first bad commit commit 794b679a28bb59a4533ae39a7cf945b9d5bbe336 Author: Jiaxun Yang jiaxun.yang@flygoat.com Date: Sat Jun 7 13:43:56 2025 +0100 MIPS: mm: tlb-r4k: Uniquify TLB entries on init commit 35ad7e181541aa5757f9f316768d3e64403ec843 upstream.

This reverts cleanly on top of 6.1.158 and the resulting kernel boots normally. I then reproduced this failure on 6.18-rc4. Reverting 35ad7e181541 on top of 6.18-rc4 also results in a normal boot.

Let me know if you need any more info!

Thanks, Nick