Am 11.10.2013 18:44, schrieb Matthew Garrett: > On Fri, Oct 11, 2013 at 06:42:36PM +0200, Richard Weinberger wrote: >> On Fri, Oct 11, 2013 at 6:39 PM, Matthew Garrett <mjg59 at srcf.ucam.org> wrote: >>> On Fri, Oct 11, 2013 at 06:33:23PM +0200, Richard Weinberger wrote: >>>> On Fri, Oct 11, 2013 at 5:48 PM, Matthew Garrett <mjg59 at srcf.ucam.org> wrote: >>>>> On Fri, Oct 11, 2013 at 11:44:50AM -0400, Vivek Goyal wrote: >>>>> >>>>>> Just Curious. How is it useful. IOW, what's your use case of booting a new >>>>>> kernel and then jumping back. >>>>> >>>>> I'm kexecing into a kernel with a modified /dev/mem, modifying the >>>>> original kernel and then jumping back into it. >>>> >>>> How do you update the original kernel? >>> >>> It's still in RAM, so the same way you'd modify any other arbitrary >>> physical address? >> >> So, you have a tool like ksplice which patches the kernel in RAM? > > I have /dev/mem and a list of addresses I want to modify. But you still need a magic tool which create you this list. If you have a tool which takes two kernel images and create such a delta, fine. I'm interested in that tool. :-) Thanks, //richard
