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Re: Tracing NetBSD sun4v issues



On 10/14/26 15:42, Palle Lyckegaard wrote:
On Sat, 10 Oct 2026, Sad Clouds wrote:

Attached. You need to build it with -O0 to stop compiler from
optimising away some code. Depending on how much stack space is used by
the variables in main() I get sigsegv or sigbus.

Thanks - will try to reproduce in qemu and on real hw as well.



I have a SPARC S7-2 sitting around doing nothing. I guess I can try
a LDOM on there and see what I see. I recall that last time I tried
this it was not a very stable result. Also, OpenBSD would not even
boot. So clearly there is something afoot in the BSD world for this
sort of hardware.

Linux is still a project in the hands of other people and I will not
even waste my time until a boatload of patches go upstream. Not a
surprise that ORACLE Solaris 11.4 runs just fine. No big deal.

--
--
Dennis Clarke
RISC-V/SPARC/PPC/ARM/CISC
UNIX and Linux spoken


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