Valid GFNs (having a representation in the dirty bitmap) need to be
strictly below p2m_size.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Introduce a helper which decides if a given pfn type has data
in the migration stream.
No change in behaviour intended, except for invalid page types which now
have a safer default.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Users of xc_get_pfn_type_batch may want to sanity check the data
returned by Xen. Add helpers for this purpose:
is_known_page_type verifies the type returned by Xen on the saving
side, or the incoming type for a page on the restoring side, is known
by the save/restore code.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
The code has gone through many refactors, but the first refactor was the one
which broke it by inverting the check with respect to checkpointed streams.
Fixes: 7449fb36c6 ("migration/save: pass checkpointed_stream from libxl to libxc")
Reported-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Use existing helper to allocate a bitmap.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
[ wei: rebase to staging ]
Signed-off-by: Wei Liu <wl@xen.org>
tools/libxc now contains libxenguest only. Move it to tools/libs/guest.
When generating the pkg-config file for libxenguest a filter is now
required for replacing "xenctrl" by "xencontrol" in the
"Requires.private:" entry. Add this filter to tools/libs/libs.mk.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org> (stubdom parts)
Jan Beulich
Olaf Hering
Andrew Cooper
Juergen Gross