Re: [Xen-devel] Re: [PATCH] Xen Guest Kexec

[Gerd Hoffmann <kraxel@xxxxxxx>]

> When I was looking at this approach I was intending to retreive the pageframe 
> info from Xen and just run unpin on anything pinned, according to its type.

Is that possible?  As far I know the frametable where that info is
stored isn't readable by domains ...

> A really big chunk of the generic kexec code is there to make sure the new 
> kernel is not loaded in an area that conflicts with its destination, much of 
> the trampoline is there to enable the new kernel to be copied on top of the 
> old one.  Address conflicts should only be an issue if you want the second 
> kernel to be a dump kernel, in which case it needs to run in-place after 
> loading.

Yep, sure, all the trampoline stuff is effectively for that.
Retested, works.  Not sure what I did wrong last time ...

cheers,

  Gerd

-- 
Gerd 'just married' Hoffmann <kraxel@xxxxxxx>
I'm the hacker formerly known as Gerd Knorr.
http://www.suse.de/~kraxel/just-married.jpeg

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