In article <87lm1v5sfz.fsf@power.cnet.aladdin.de>
cpg@aladdin.de wrote:

> panic: tlb_handler: invalid user-space access from kernel mode va=0x00000000, ssr=0x400000f0, spc=0x8c0c7ab4  proc=0x8c46d63c onfault=0x8c0ae606
> Stopped in pid 2094 (conftest) at       cpu_Debugger+0x6:       mov     r14, r15
> 
> db> t
> cpu_Debugger() at panic+0x90
> panic() at tlb_exception+0x238
> tlb_exception() at 0x8c000484
> sh3/cache_sh4.h() at          0
> db> 
>
> Doesn't it happen for you?

Hmm, I also had spontaneous reboots, and I wondered whether
all TLB operations should be protected by splvm() or not.

I'm using a patch which sprinkles splvm() in sh3/pmap.c:
http://www.ceres.dti.ne.jp/~tsutsui/netbsd/sh3-pmap-20030109.diff
but I'm not sure it's really worth.
---
Izumi Tsutsui
tsutsui@ceres.dti.ne.jp