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Re: [Xen-devel] kexec: Clearing registers just before jumping into purgatory
- To: Richard Weinberger <richard@xxxxxx>
- From: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
- Date: Fri, 11 Oct 2013 18:01:39 +0100
- Cc: keir@xxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>, Richard Weinberger <richard.weinberger@xxxxxxxxx>, Daniel Kiper <daniel.kiper@xxxxxxxxxx>, kexec@xxxxxxxxxxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxx, hbabu@xxxxxxxxxx, "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>, jbeulich@xxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxxxxxxxx>, Vivek Goyal <vgoyal@xxxxxxxxxx>, david.vrabel@xxxxxxxxxx
- Delivery-date: Fri, 11 Oct 2013 17:02:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Fri, Oct 11, 2013 at 06:59:41PM +0200, Richard Weinberger wrote:
> Am 11.10.2013 18:55, schrieb Matthew Garrett:
> > On Fri, Oct 11, 2013 at 06:47:19PM +0200, Richard Weinberger wrote:
> >
> >> But you still need a magic tool which create you this list.
> >
> > I just read /proc/kallsyms. I'm really not doing anything complicated.
> >
> >> If you have a tool which takes two kernel images and create such
> >> a delta, fine.
> >
> > Isn't that ksplice?
>
> So, you have a variant of ksplice which is able to kexec?
No, I manually look up some addresses from /proc/kallsyms and then
modify them in the second kernel.
--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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