On Wed, May 14, 2008 at 12:03:29PM -0400, Vivek Goyal wrote: > 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. > Never mind. I found it. Following worked for me for returning back to original kernel. kexec --load-jump-back-helper --entry=<entry point> Just wondering if "--load-jump-back-helper" should be an explicit option or kexec should silently assume it if no "-l" or "-p" is given. Thanks Vivek
