[Xen-devel] [PATCH 5/8] kexec: extend hypercall with improved load/unload ops

[Jan Beulich]

>>> On 21.02.13 at 18:48, David Vrabel <david.vrabel at citrix.com> wrote:
> Crash images are copied directly into the crash region on load.
> Default images are copied into Xen heap pages and a list of source and
> destination machine addresses is created.  This is list is used in
> kexec_reloc() to relocate the image to its destination.

Did you carefully consider the implications of using Xen heap pages
here as opposed to domain heap ones? On huge systems, this may
prevent kexec from working, as you're not just trying to allocate a
handful of pages. IOW, is the less complex code really worth the
increased likelihood of a failure here?

Jan