[Xen-devel] incorrect layout of globals from head_64.S during kexec boot

[Ian Campbell]

On Tue, 2012-07-10 at 10:14 -0400, Konrad Rzeszutek Wilk wrote:
> Which brings me to another question - say we do use this patch, what
> if the decompressor overwrites the old kernels .data section. Won't
> we run into this problem again?

I've not really been following this thread that closely but wouldn't the
right answer be for the original kernel to unmap the shared info on
kexec? Or maybe remap it up to some high/reserved address? Can it read
the original address used by hvmloader at start of day and reuse that?

Ian.