[Xen-devel] [PATCH v8 0/3] libxl: save/restore qemu physmap

[Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>]

Hi all,
this patch series introduces a new xc_save_id called
XC_SAVE_ID_TOOLSTACK to save/restore toolstack specific information.
Libxl is going to use the new save_id to save and restore qemu's
physmap.

The QEMU side of this patch series has been accepted, so it is now safe
to commit it to xen-unstable.


Changes in v8:
- return an error on restore if toolstack data is available but no
toolstack callback has been provided.


Changes in v7:
- log error messages on error paths;

- make the toolstack save/restore functions more readable.


Changes in v6:

- rebased on "kexec: Fix printing of paddr_t in 32bit mode.";

- use the command "xen-save-devices-state" to save the QEMU devices
state.



Changes in v5:

- rebased on "arm: lr register in hyp mode is really LR_usr.".



Changes in v4:

- addressed Shriram's comments about the first patch: saving/restoring
toolstack extra information should work we Remus too now;

- added a new patch to use QMP "save_devices" command rather than
"migrate" to save QEMU's device state.



Changes in v3:

- rebased the series;

- xc_domain_restore: read the toolstack data in pagebuf_get_one, call
the callback at finish_hvm;



Changes in v2:

- xc_domain_save frees the buffer allocated by the callback;

- introduce a version number in the libxl save record;

- define libxl__physmap_info and use it to read/store information to the
buffer.


Stefano Stabellini (3):
      libxc: introduce XC_SAVE_ID_TOOLSTACK
      libxl: save/restore qemu's physmap
      libxl_qmp: remove libxl__qmp_migrate, introduce libxl__qmp_save

 tools/libxc/xc_domain_restore.c |   53 ++++++++++++-
 tools/libxc/xc_domain_save.c    |   17 ++++
 tools/libxc/xenguest.h          |   23 +++++-
 tools/libxc/xg_save_restore.h   |    1 +
 tools/libxl/libxl_dom.c         |  174 ++++++++++++++++++++++++++++++++++++---
 tools/libxl/libxl_internal.h    |    2 +-
 tools/libxl/libxl_qmp.c         |   82 +------------------
 tools/xcutils/xc_restore.c      |    2 +-
 8 files changed, 260 insertions(+), 94 deletions(-)


Cheers,

Stefano

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