[Bug 239245] r350074 will panic on ppc64 PowerMac G5 in vm_phys_enqueue_contig

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239245

--- Comment #31 from Francis Little <oggy at farscape.co.uk> ---

So using the method of extracting the kernel from ci.freebsd.org over my
install (I use a 12-STABLE r349903 ISO to install), I am able to boot an
r350114 kernel by setting

set usefdt=1

at the boot loader, without that, I get a black screen and the machine locks.

root at PowerMacG5:~ # uname -apKU
FreeBSD PowerMacG5 13.0-CURRENT FreeBSD 13.0-CURRENT r350114 GENERIC  powerpc
powerpc64 1300036 1200513

root at PowerMacG5:~ # sysctl -a | grep smp
kern.smp.maxid: 3
kern.smp.maxcpus: 256
kern.smp.active: 1
kern.smp.disabled: 0
kern.smp.cpus: 4
kern.smp.threads_per_core: 1
kern.smp.cores: 4

I get the NIC reorder, but can manage that.

Next, I will get a full kernel, world, lib32 etc of r350114 from
artifact.ci.freebsd.org extracted to the drive, checkout r350114 to src and
re-build everything and see what happens.

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