Hi, On Sat, 2012-11-24 at 10:00 +0100, Sven Neumann wrote: > I am trying to use kexec-2.0.4-rc1 on an ARM device running Linux 3.0.4. > This old kernel does obviously not have device-tree support. Here's the > error message I get: > > # uname -a > Linux speaker 3.0.4 #1 PREEMPT Fri Nov 23 09:15:39 CET 2012 armv5tel GNU/Linux > > # kexec --append="console=ttyS0,115200 root=ubi0:RootFS rootfstype=ubifs rw ubi.mtd=3" /boot/uImage --force > unrecoverable error: could not scan "/proc/device-tree/": No such file or directory > > > Looks like the release candidate depends on the very latest kernel > features and won't work on older kernels? Is that intentional? OK, in the meantime I figured out that I can use kexec-2.0.4-rc1 if I use the --atags command-line parameter. But unless I missed something, this change in behavior is nowhere documented and thus should be considered a severe regression. I am somewhat puzzled that no one here even cared about my email. IMO the behavior should be changed so that kexec, if called on ARM without the --dtb or --atags parameters, checks if the running kernel provides /proc/device-tree. If it doesn't, then this should not be a fatal error, but it should assume --atags. That would restore the old behavior for kernels that don't use device-tree. Regards, Sven -- Sven Neumann Head of RAUMFELD Software Development Lautsprecher Teufel GmbH Gewerbehof B?lowbogen - Aufgang D1 B?lowstr. 66 - 10783 Berlin - Germany Registernummer HRB 20271 beim Amtsgericht Berlin-Charlottenburg Gesch?ftsf?hrer: Thomas Stiegler, Edgar van Velzen Tel. +49 (0)30 - 300 930 - 0, Direkt -153 neumann at teufel.de www.teufel.de www.teufelaudio.com http://blog.teufel.de
