[Xen-devel] [PATCH v2 0/9] xen: arm: Refactor/improve early DT parsing and multiboot module support

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

The following refactors the Xen early device tree stuff (i.e. which
walks the flattened tree directly) away from the regular device tree
stuff (i.e. the stuff which for the most part deals with the unflattened
tree). It also makes some changes to the Xen side multiboot support
which I think will make it easier to work with, both internally and for
e.g. bootloader integration.

Impact on UEFI/ACPI: Mostly I think the refactoring may be useful when
integrating the UEFI memory map and ACPI stuff (which wants early FDT,
but not unflatening etc) in to Xen.

Impact on multiboot: This could potentially simplify things on the grub
side by removing the need to guess default types for the modules in the
common case.

In the future I think it would be good to implement more probing on the
Xen side, e.g. to discover the XSM policy (similar to how it works on
x86 -- which walks all the modules looking for the policy magic nr).

The first two patches here have been posted before.

For changes since v2 see the individual patches changelog. I've dropped
"xen: arm: Drop device_tree_node_compatible" this time around (to much
yakk shaving involved).

Ian.


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