[Xen-devel] [PATCH 0/4] Turn-key PV-GRUB2 installation

[Colin Watson <cjwatson@xxxxxxxxxx>]

This patch set should make it easier to maintain PV-GRUB2 installations.
The general idea is based on discussions I had with Xen developers
(mainly Ian Jackson) at the Ubuntu Developer Summit in May 2011; though
I never did manage to get the core port done and Vladimir beat me to
that, I think the configuration approach we discussed there is still
valid and useful.

The idea here is that people maintaining dom0s, especially in big cloud
installations, will probably not want to update their PV-GRUB2 image
(which will be read from the dom0 filesystem but will run in the domU)
very often; but on the other hand people maintaining distributions will
want to be able to move on and make use of latest-and-greatest features.
To make this work, we build a dom0-filesystem-suitable grub.xen image
which just tries to chainload another grub.xen from a couple of
reasonably standard locations in the domU's filesystem
(/boot/grub/grub.xen and /boot/grub2/grub.xen).

I've arranged that you can either use that very same grub.xen image in
the domU by way of a new mechanism that passes GRUB environment
variables via the Xen guest command line so that we can tell which
context we're in, or you can run "grub-install --target=x86_64-xen" in
the domU which will build and install a suitable one in more or less the
usual way.

Colin Watson (4):
  Add an option to exclude devices from search results.
  Accept environment variables on the command line for Xen.
  Build grub.xen.
  Improve installation on Xen.

 .gitignore                       |  1 +
 ChangeLog                        | 45 ++++++++++++++++++++++++++++++++++++++++
 Makefile.am                      | 14 +++++++++++++
 configure.ac                     |  1 +
 docs/grub.texi                   |  7 ++++++-
 grub-core/Makefile.core.def      |  7 +++++++
 grub-core/boot/xen/xen.cfg.in    | 31 +++++++++++++++++++++++++++
 grub-core/commands/search.c      | 15 ++++++++++++--
 grub-core/commands/search_wrap.c | 27 +++++++++++++++++++-----
 grub-core/kern/xen/init.c        | 44 +++++++++++++++++++++++++++++++++++++++
 include/grub/search.h            |  9 +++++---
 util/grub-install.c              | 11 ++++++++--
 12 files changed, 199 insertions(+), 13 deletions(-)
 create mode 100644 grub-core/boot/xen/xen.cfg.in

-- 
1.8.4.4

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