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. -- Matthew Garrett | mjg59 at srcf.ucam.org
