On Thu, Mar 06, 2008 at 11:13:08AM +0800, Huang, Ying wrote: > This is a minimal patch with only the essential features. All > additional features are split out and can be discussed later. I think > it may be easier to get consensus on this minimal patch. > Hi Huang, Ok, after a long time, I am back to testing and reviewing this patch. [..] > 7. Boot kernel compiled in step 1 (kernel C). Use the rootfs.gz as > root file system. > > 8. In kernel C, load the memory image of kernel A as follow: > > /sbin/kexec -l --args-none --entry=`cat kexec_jump_back_entry` dump.elf > How do I got back to original kernel without loading dump.elf. I mean, original kernel is already in memory and I don't have to first save it to disk and then reload back. Is there a way to do it? If not, then we need to modify kexec-tools to support that. Something like kexec --entry=<entry point>, should tell kexec that kernel is already loaded. Just do the bit to set the entry point properly. Thanks Vivek