Re: [PATCH v2] mips: mm: Call rcutree_report_cpu_starting() even earlier

From: Maciej W. Rozycki

Date: Sat May 23 2026 - 09:49:46 EST


Hi Stefan,

> > I was able to reproduce this splat on latest mainline with the attached
> > defconfig on QEMU, which I invoked as follows:
> >
> > $ qemu-system-mips64 -cpu I6400 -smp 2 -kernel vmlinux -nographic
[...]
>
> Any chance we could conclude on this topic?

I'm afraid I have no QEMU installation ready to use, so I can't reproduce
your steps without getting sidetracked. Would you be able to explain why
it triggers with QEMU and possibly the I6400 CPU in particular, but not on
real SMP hardware I have? From your commit description I infer this isn't
supposed to be a heisenbug.

Maciej