FreeBSD 8.2-release: SMP?

[Andreas Tobler]

On 21.03.11 21:51, Torfinn Ingolfsen wrote:
> Hello,
>
> I have FreeBSD 8.2-release installed on my G5 Quad:
> root at kg-g5# uname -a
> FreeBSD kg-g5.kg4.no 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Sat Feb 19 01:18:47 UTC 2011     root at xserve.lan.xcllnt.net:/usr/obj/usr/src/sys/GENERIC  powerpc
>
> And I wanted to build a SMP kernel, so I used this kernel config file:
> root at kg-g5# more /sys/powerpc/conf/G5
> #
> # G5    - GENERIC kernel, plus SMP
> #       based on
> # GENERIC -- Generic kernel configuration file for FreeBSD/powerpc
> #
> include GENERIC
>
> ident   G5-GENERIC
>
> options SMP
>
> The kernel builds and installs ok, I used
> cd /usr/src
> make buildkernel KERNCONF=G5
> make installkernel KERNCONF=G5
>
> However, when I boot the new kernel, I get this:
> avail memory = 1996509184 (1904 MB)
> SMP: cpu2: skipped -- ID out of range
> SMP: cpu3: skipped -- ID out of range
> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
> cpu0: dev=ff89d680 (BSP)
> cpu1: dev=ff89eb70
> panic: Built bad topology at 0x866aec. CPU mask 0xF != 0x3
> cpuid = 0
> KDB stack backtrace:
> #0 0x309040 at panic+0x1a4
> #1 0x3503ac at smp_topo+0x12c
> #2 0x3335e8 at sched_setup+0x48
> #3 0x2af9cc at mi_startup+0x134
> #4 0x100198 at btext+0x98
>
> Am I missing something in my kernel config file?

No, this is not on 8.2 yet. See here:

http://svn.freebsd.org/viewvc/base?view=revision&revision=212170

You might try to apply the above to 8.2 and rebuild your kernel.

Otherwise -CURRENT is calling :)

Gruss,
Andreas