[Xen-devel] [PATCH v4 00/27] Libxl migration v2

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

This series adds support for the libxl migration v2 stream, and untangles the
existing layering violations of the toolstack and qemu records.

It can be found on the branch "libxl-migv2-v4"
  git://xenbits.xen.org/people/andrewcoop/xen.git
  http://xenbits.xen.org/git-http/people/andrewcoop/xen.git

No major changes over v3, but a lot of minor changes following review.

At the end of the series, legacy migration is no longer used.

The Remus code is untested by me.  All other combinations of
suspend/migrate/resume have been tested with PV and HVM guests (qemu-trad and
qemu-upstream), including automatic legacy -> v2 inline conversion.

Anyway, thoughts/comments welcome.  Please test!

~Andrew

Summary of Acks/Modified/New from v2

A   bsd-sys-queue-h-seddery: Massage `offsetof'
A   tools/libxc: Always compile the compat qemu variables into xc_sr_context
A   tools/libxl: Introduce ROUNDUP()
A   tools/libxl: Introduce libxl__kill()
A   tools/libxl: Stash all restore parameters in domain_create_state
A   tools/libxl: Split libxl__domain_create_state.restore_fd in two
AM  tools/libxl: Extra management APIs for the save helper
A   tools/libxl: Add save_helper_state pointers to 
libxl__xc_domain_{save,restore}()
  N tools/libxl: Fix libxl__carefd_opened() to be more useful with an invalid fd
A   tools/xl: Mandatory flag indicating the format of the migration stream
A   docs: Libxl migration v2 stream specification
A   tools/python: Libxc migration v2 infrastructure
A   tools/python: Libxl migration v2 infrastructure
A   tools/python: Other migration infrastructure
A   tools/python: Verification utility for v2 stream spec compliance
A   tools/python: Conversion utility for legacy migration streams
A   tools/libxl: Migration v2 stream format
 M  tools/libxl: Infrastructure for reading a libxl migration v2 stream
 M  tools/libxl: Infrastructure to convert a legacy stream
 M  tools/libxl: Convert a legacy stream if needed
AM  tools/libxc+libxl+xl: Restore v2 streams
 M  tools/libxl: Infrastructure for writing a v2 stream
AM  tools/libxc+libxl+xl: Save v2 streams
A   docs/libxl: Introduce CHECKPOINT_END to support migration v2 remus streams
AM  tools/libxl: Write checkpoint records into the stream
A   tools/libx{c,l}: Introduce restore_callbacks.checkpoint()
AM  tools/libxl: Handle checkpoint records in a libxl migration v2 stream
A   tools/libxc: Drop all XG_LIBXL_HVM_COMPAT code from libxc
A   tools/libxl: Drop all knowledge of toolstack callbacks

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