On Sat, May 25, 2013 at 02:52:17PM +0200, Michael Holzheu wrote: [..] > Therefore, if necessary, IMHO we can switch to the ELF header memory > swap mechanism for s390 in the kernel. Of course we would then also > have to adjust the (disabled) kexec code. I think it is a good idea to fix it in s390 kernel so that copy_oldmem_page() does not do any swapping and fix the ELF header generation logic and any swapping is done in ELF headers. Agreed that we need to fixed s390 kexec-tools too. I guess our best bet would be to parse the kernel version and fix headers only for newer kernel versions. This assumes that first kernel and second kernel are same but that's the case for majority of the people anyway. So for majority of people, change will be backward compatible. Thanks Vivek