Commit Graph

33 Commits

Author SHA1 Message Date
Eric Auger 9a85e4b8f6 migration: Support gtree migration
Introduce support for GTree migration. A custom save/restore
is implemented. Each item is made of a key and a data.

If the key is a pointer to an object, 2 VMSDs are passed into
the GTree VMStateField.

When putting the items, the tree is traversed in sorted order by
g_tree_foreach.

On the get() path, gtrees must be allocated using the proper
key compare, key destroy and value destroy. This must be handled
beforehand, for example in a pre_load method.

Tests are added to test save/dump of structs containing gtrees
including the virtio-iommu domain/mappings scenario.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

Message-Id: <20191011121724.433-1-eric.auger@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  uintptr_t fixup for test on 32bit
2019-10-11 17:52:31 +01:00
Markus Armbruster 0b8fa32f55 Include qemu/module.h where needed, drop it from qemu-common.h
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c
hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c;
ui/cocoa.m fixed up]
2019-06-12 13:18:33 +02:00
Marc-André Lureau b95d6588f2 tests: add /vmstate/simple/array
A very simple test to show VMSTATE_*_ARRAY usage and result. It could
be systematically extended to other primitives, but I leave that as an
exercise for others :).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181114132130.27141-1-marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-01-23 15:51:47 +00:00
Paolo Bonzini eae3eb3e18 qemu/queue.h: simplify reverse access to QTAILQ
The new definition of QTAILQ does not require passing the headname,
remove it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Daniel P. Berrangé 977a7204ab tests: don't silence error reporting for all tests
The test-vmstate test is a bit chatty because it triggers various
expected failure scenarios and the code in question uses error_report
instead of accepting 'Error **errp' parameters. To silence this test the
stubs for error_vprintf() were changed to send errors via
g_test_message() instead of stderr:

  commit 28017e010d
  Author: Paolo Bonzini <pbonzini@redhat.com>
  Date:   Mon Oct 24 18:31:03 2016 +0200

    tests: send error_report to test log

    Implement error_vprintf to send the output of error_report to
    the test log.  This silences test-vmstate.

    Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
    Message-Id: <1477326663-67817-3-git-send-email-pbonzini@redhat.com>

Unfortunately this change has global impact across the entire test suite
and means that when tests fail for unexpected reasons, the message is
not displayed on stderr. eg when using &error_abort in a call the test
merely prints

  Unexpected error in qcrypto_tls_session_check_certificate() at crypto/tlssession.c:280:

and the actual error message is hidden, making it impossible to diagnose
the failure. This is especially problematic in CI or build systems where
it isn't possible to easily pass the --debug-log flag to tests and
re-run with the test log visible.

This change makes the previous big hammer much more nuanced, providing a
flag in the stub error_vprintf() that can used on a per-test basis to
silence the errors. Only the test-vmstate silences errors initially.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2018-07-24 17:35:23 +01:00
Dr. David Alan Gilbert 2f168d0708 migration: Route more error paths
vmstate_save_state is called in lots of places.
Route error returns from the easier cases back up;  there are lots
of more complex cases where their own error paths need fixing.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-7-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Commit message fix up as Peter's review
2017-09-27 11:44:18 +01:00
Dr. David Alan Gilbert 44b1ff319c migration: pre_save return int
Modify the pre_save method on VMStateDescription to return an int
rather than void so that it potentially can fail.

Changed zillions of devices to make them return 0; the only
case I've made it return non-0 is hw/intc/s390_flic_kvm.c that already
had an error_report/return case.

Note: If you add an error exit in your pre_save you must emit
an error_report to say why.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-2-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-09-27 11:35:59 +01:00
Juan Quintela 6666c96aac migration: Move migration.h to migration/
Nothing uses it outside of migration.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
2017-06-13 11:00:45 +02:00
Juan Quintela c3d2e2e76c migration: Move constants to savevm.h
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
2017-06-13 11:00:45 +02:00
Juan Quintela 08a0aee15c migration: Split qemu-file.h
Split the file into public and internal interfaces.  I have to rename
the external one because we can't have two include files with the same
name in the same directory.  Build system gets confused.  The only
exported functions are the ones that handle basic types.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-06-01 18:49:22 +02:00
Juan Quintela 82b9d0f06a migration: Remove qemu-file.h from vmstate.h
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

--

minor rearangements due to the rebase
2017-05-18 19:20:59 +02:00
Juan Quintela 40014d81f2 migration: Export qemu-file-channel.c functions in its own file
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-05-18 19:20:50 +02:00
Halil Pasic 4333309961 tests/test-vmstate.c: test array of ptr to primitive
Let's have a test for ptr arrays to some primitive type with some
not-null and null ptrs intermixed.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

Message-Id: <20170222160119.52771-6-pasic@linux.vnet.ibm.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-02-28 11:30:22 +00:00
Halil Pasic cc95883185 tests/test-vmstate.c: test array of ptr with null
Add test for VMSTATE_ARRAY_OF_POINTER_TO_STRUCT with an array
containing some null pointer.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170222160119.52771-5-pasic@linux.vnet.ibm.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
   Fixed type case in assert to uintptr_t rather than uint64_t
2017-02-28 11:30:06 +00:00
Paolo Bonzini a3fd46152e test-vmstate: remove yield_until_fd_readable
The function is not needed anymore now that migration is built on
top of QIOChannel.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-02-16 14:06:55 +01:00
Dr. David Alan Gilbert 5c379d9031 tests/migration: Add test for VMSTATE_WITH_TMP
Add a test for VMSTATE_WITH_TMP to tests/test-vmstate.c

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20170203160651.19917-4-dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-02-13 17:27:14 +00:00
Jianjun Duan 7e99f22cbe tests/migration: Add test for QTAILQ migration
Add a test for QTAILQ migration to tests/test-vmstate.c.

Signed-off-by: Jianjun Duan <duanj@linux.vnet.ibm.com>
Message-Id: <1484852453-12728-4-git-send-email-duanj@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-01-24 17:54:47 +00:00
Halil Pasic 8cc49f0302 tests/test-vmstate.c: add array of pointer to struct
Increase test coverage by adding tests for the macro
VMSTATE_ARRAY_OF_POINTER_TO_STRUCT.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2016-11-14 14:50:56 +01:00
Halil Pasic 6d57b4c000 tests/test-vmstate.c: add save_buffer util func
Let us de-duplicate some code by introducing an utility function for
saving a chunk of bytes (used when testing load based on wire).

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2016-11-14 14:50:56 +01:00
Marc-André Lureau 4ae3c0e27f tests: fix test-vmstate leaks
Spotted thanks to ASAN.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-09-08 17:57:32 +04:00
Peter Maydell 79ffb277ec tests: Remove unnecessary glib.h includes
Remove glib.h includes, as it is provided by osdep.h.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2016-06-07 18:19:24 +03:00
Daniel P. Berrange 8925839f00 migration: convert savevm to use QIOChannel for writing to files
Convert the exec savevm code to use QIOChannel and QEMUFileChannel,
instead of the stdio APIs.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1461751518-12128-19-git-send-email-berrange@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-05-26 11:31:53 +05:30
Daniel P. Berrange a8ec4437cd migration: remove use of qemu_bufopen from vmstate tests
Some of the test-vmstate.c test cases use a temporary file
while others use a memory buffer. To facilitate the future
removal of the qemu_bufopen() function, convert all the tests
to use a temporary file.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <1461751518-12128-4-git-send-email-berrange@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
2016-05-26 11:31:11 +05:30
Peter Maydell 681c28a33e tests: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
2016-02-16 14:29:27 +00:00
Daniel P. Berrange 10817bf09d coroutine: move into libqemuutil.a library
The coroutine files are currently referenced by the block-obj-y
variable. The coroutine functionality though is already used by
more than just the block code. eg migration code uses coroutine
yield. In the future the I/O channel code will also use the
coroutine yield functionality. Since the coroutine code is nicely
self-contained it can be easily built as part of the libqemuutil.a
library, making it widely available.

The headers are also moved into include/qemu, instead of the
include/block directory, since they are now part of the util
codebase, and the impl was never in the block/ directory
either.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2015-10-20 14:59:04 +01:00
Alexander Graf 8118f0950f migration: Append JSON description of migration stream
One of the annoyances of the current migration format is the fact that
it's not self-describing. In fact, it's not properly describing at all.
Some code randomly scattered throughout QEMU elaborates roughly how to
read and write a stream of bytes.

We discussed an idea during KVM Forum 2013 to add a JSON description of
the migration protocol itself to the migration stream. This patch
adds a section after the VM_END migration end marker that contains
description data on what the device sections of the stream are composed of.

This approach is backwards compatible with any QEMU version reading the
stream, because QEMU just stops reading after the VM_END marker and ignores
any data following it.

With an additional external program this allows us to decipher the
contents of any migration stream and hopefully make migration bugs easier
to track down.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2015-02-05 17:16:14 +01:00
Yang Hongyang 8580b06498 Tests: QEMUSizedBuffer/QEMUBuffer
Modify some of tests/test-vmstate.c due to qemu_bufopen() change.
If you create a QEMUSizedBuffer yourself, you have to explicitly
free it.

Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Amit Shah <amit.shah@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
2015-01-16 13:06:17 +05:30
Dr. David Alan Gilbert 9935baca9b Tests: QEMUSizedBuffer/QEMUBuffer
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.

Only some of the tests are changed so that the fd backed QEMUFile is
still tested.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2014-10-14 09:17:06 +02:00
Stefan Weil 748bfb4eee tests: Add missing 'static' attributes (fix warnings from smatch)
Smatch also complains about 0 used for pointers, so replace those by
NULL in test-visitor-serialization.c, too.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-07-18 17:45:37 +04:00
Juan Quintela 4ea7df4e5c vmstate: Refactor & increase tests for primitive types
This commit refactor the simple tests to test all integer types. We
move to hex because it is easier to read values of different types.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2014-06-23 19:14:52 +02:00
Juan Quintela c6f6646c60 vmstate: Refactor opening of files
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
2014-06-16 04:55:27 +02:00
Juan Quintela 35d08458a9 savevm: Remove all the unneeded version_minimum_id_old (rest)
After previous Peter patch, they are redundant.  This way we don't
assign them except when needed.  Once there, there were lots of case
where the ".fields" indentation was wrong:

     .fields = (VMStateField []) {
and
     .fields =      (VMStateField []) {

Change all the combinations to:

     .fields = (VMStateField[]){

The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-14 15:24:51 +02:00
Eduardo Habkost 2668b4bff4 tests: Some unit tests for vmstate.c
* Basic load/save tests
 * Tests for loading older versions
 * Tests for .field_exists() handling

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2014-01-13 14:04:53 +01:00