vmcore file 0 size in x86_64

[bernhard.walle@xxxxxx (Bernhard Walle)]

Ken'ichi Ohmichi schrieb:
> 
> If compiling your user space program with tree options
> (-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE),
> it can access the high memory.

And it's important that you load the crashkernel with

 % kexec ... --elf64-core-headers

or at least *without* --elf32-core-headers since there is an
auto-detection in 'new' versions of kexec.


Regards,
Bernhard