kexec: Clearing registers just before jumping into purgatory
mjg59 at srcf.ucam.org
Fri Oct 11 12:39:33 EDT 2013
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
Matthew Garrett | mjg59 at srcf.ucam.org
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