Commit Graph
11 Commits
Author SHA1 Message Date
Andrew Cooper 321b658847 tools/migration: Formatting and style cleanup
The code has devating from the prevailing style in many ways.  Adjust spacing,
indentation, position of operators, layout of multiline comments, removal of
superfluous comments, constness, trailing commas, and use of unqualified
'unsigned'.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2020-01-16 15:16:42 +00:00
Andrew Cooper 279521aed9 libxc/migration: Drop unimplemented domain types
x86 PVH is completely obsolete - it was intended for legacy PVH before that
idea was abandoned.  There was an RFC series for ARM in 2015, but there is
plenty of outstanding work which hasn't been done yet.

No functional change.  New types can be (re)introduced with the code which
actually implements them.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Julien Grall <julien@xen.org>
Acked-by: Wei Liu <wl@xen.org>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2019-12-24 14:59:04 +00:00
Andrew Cooper 50ea2445f4 libxc/migration: Rename TSC_INFO to X86_TSC_INFO
This record is specific to x86, and should have had a prefix to being with.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2019-12-24 14:59:04 +00:00
Andrew Cooper 31bf4f26aa tools/libxc: Drop other examples of the 'goto x; } else if' antipattern
None of these are buggy, but the resulting code is more robust.

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2019-12-20 16:08:00 +00:00
Juergen Gross 8dca2fe393 libxc: correct error message in xc_sr_common.c
When the record length for sending the p2m frames in a migration
stream is too large, the issued error message is not very helpful:

xc: Record (0x00000003, x86 PV P2M frames) length 0x8 exceeds max
    (0x800000): Internal error

When printing the error use the size which was tested instead that of
the record header length.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
2017-08-15 15:45:43 +01:00
Wei Liu 3a7f872ae4 tools: lift BUILD_BUG_ON to a tools header file
Only define BUILD_BUG_ON when there isn't one already, because mini-os
currently leaks that.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2016-09-19 17:03:20 +01:00
Wen Congyang d34ef46bc4 libxc/migration: export read_record for common use
read_record() could be used by primary to read dirty bitmap
record sent by secondary under COLO.
When used by xc save side, we need to pass the backchannel fd
instead of ctx->fd to read_record(), so we added a fd param to
it.
No functional changes.

CC: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Yang Hongyang <hongyang.yang@easystack.cn>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2016-04-01 11:07:28 +08:00
Wen Congyang 9f4edff430 libxc/migration: Specification update for DIRTY_PFN_LIST records
Used by secondary to send it's dirty bitmap to primary under COLO.

Signed-off-by: Yang Hongyang <hongyang.yang@easystack.cn>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
2016-04-01 11:07:28 +08:00
Andrew Cooper 0853659695 libxc/migration: Specification update for CHECKPOINT records
Checkpointed streams need to signal the end of a consistent view of VM state,
and the start of the libxl data.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
CC: Ian Campbell <Ian.Campbell@citrix.com>
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
2015-05-14 13:01:11 +01:00
Andrew Cooper 4f85574b94 tools/libxc: generic common code
Add the context structure used to keep state during the save/restore
process.

Define the set of architecture or domain type specific operations with a
set of callbacks (save_ops, and restore_ops).

Add common functions for writing records.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
2015-05-05 14:30:46 +01:00
Andrew Cooper d004e0980d tools/libxc: C implementation of stream format
Provide the C structures matching the binary (wire) format of the new
stream format.  All header/record fields are naturally aligned and
explicit padding fields are used to ensure the correct layout (i.e.,
there is no need for any non-standard structure packing pragma or
attribute).

Provide some helper functions for converting types to string for
diagnostic purposes.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
2015-05-05 14:30:46 +01:00