Am Freitag, 23. Oktober 2015, 12:54:56 schrieb Michael Ellerman: > On Thu, 2015-10-22 at 12:15 -0700, Geoff Levand wrote: > > Hi, > > > > On Fri, 2015-10-09 at 23:13 +0200, Marc Dietrich wrote: > > > Am Freitag, 9. Oktober 2015, 10:45:42 schrieb Geoff Levand: > > > > With the 4.2-rc4 kernel, kexec seems to work when CONFIG_SPU_FS=n. > > > > > > > > I > > > > > > > > have not tried with petitboot release white-09.09.01-15.56 yet though. > > > > > > I guess you mean 4.3-rc4. Still no luck with CONFIG_SPU_FS=n. No output > > > even with direct calling kexec. Can you put a working kernel/initrd to > > > some place so I can try this? > > > > I did some more work on this, but still did not find out what the problem > > is. Kexec from 4.3 -> 4.3 works, but with the white-09.09.01-15.56 > > > > petitboot (2.6.30.9) -> 4.3 gets a kernel panic: > > -> early_setup(), dt_ptr: 0x7fff000 > > > > Kernel panic - not syncing: BUG: Failed verifying flat device tree, bad > > version? > > > > I'll look at it some more as I find time. > > That says that the device tree firmware gave you (ie. from kexec), is using > an old version of the device tree format. > > I can't remember off the top of my head which version you need, but > basically newer kernels require a newer device tree format. So your kexec > might be too old?
that reminds me about a different question. I said before that I use plain vmlinux for the kernel image. This works at least with 2.6.35 (the newest kernel I got booting so far). But I also saw that a device tree is being compiled and linked with the kernel to produce a dt image in arch/powerpc/boot. Is it possible that newer kernels require a device tree? Marc
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