Commit Graph

76 Commits

Author SHA1 Message Date
Philippe Mathieu-Daudé
746f244d97 python/qemu/machine: Allow to use other serial consoles than default
Currently the QEMU Python module limits the QEMUMachine class to
use the first serial console.

Some machines/guest might use another console than the first one as
the 'boot console'. For example the Raspberry Pi uses the second
(AUX) console.

To be able to use the Nth console as default, we simply need to
connect all the N - 1 consoles to the null chardev.

Add an index argument, so we can use a specific serial console as
default.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Tested-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20200120235159.18510-5-f4bug@amsat.org>
[PMD: zero-initialize _console_index in __init__()]
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Lukáš Doktor
52c68b8abb python: Treat None-return of greeting cmd
In case qemu process dies the "monitor.cmd" returns None which gets
passed to the "__negotiate_capabilities" and leads to unhandled
exception. Let's only check the resp in case it has a value.

Signed-off-by: Lukáš Doktor <ldoktor@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20200120071202.30646-1-ldoktor@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
51aa9d127d python/qemu: accel: Fix kvm_available() on ppc64le
On ppc64le, the accel.kvm_available() check may wrongly
return False because the host arch (as returned by os.uname[4])
and the target arch (ppc64) mismatch. In order to solve this
it is added an ppc64le -> ppc64 mapping which is used as an
fallback verification.

Fixes: 53a049d7d7
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200205203250.30526-5-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
50d189c97a python/qemu: qmp: Remove unnused attributes
The `error` and `timeout` attributes in QEMUMonitorProtocol are
not used, so this delete them.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191227134101.244496-6-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
07608e807d python/qemu: qmp: Make QEMUMonitorProtocol a context manager
This implement the __enter__ and __exit__ functions on
QEMUMonitorProtocol class so that it can be used on 'with'
statement and the resources will be free up on block end:

with QEMUMonitorProtocol(socket_path) as qmp:
    qmp.connect()
    qmp.command('query-status')

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20200204141111.3207-5-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
54aafc2fc6 python/qemu: qmp: Make accept()'s timeout configurable
Currently the timeout of QEMUMonitorProtocol.accept() is
hard-coded to 15.0 seconds. This added the parameter `timeout`
so the value can be configured by the user.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20200204141111.3207-4-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
a0a261e472 python/qemu: Delint the qmp module
This clean up the pylint-3 report on qmp:

************* Module qemu.qmp
python/qemu/qmp.py:1:0: C0111: Missing module docstring (missing-docstring)
python/qemu/qmp.py:17:0: C0111: Missing class docstring (missing-docstring)
python/qemu/qmp.py:21:0: C0111: Missing class docstring (missing-docstring)
python/qemu/qmp.py:25:0: C0111: Missing class docstring (missing-docstring)
python/qemu/qmp.py:29:0: C0111: Missing class docstring (missing-docstring)
python/qemu/qmp.py:33:0: C0111: Missing class docstring (missing-docstring)
python/qemu/qmp.py:33:0: R0205: Class 'QEMUMonitorProtocol' inherits from object, can be safely removed from bases in python3 (useless-object-inheritance)
python/qemu/qmp.py:80:4: R1710: Either all return statements in a function should return an expression, or none of them should. (inconsistent-return-statements)
python/qemu/qmp.py:131:4: R1710: Either all return statements in a function should return an expression, or none of them should. (inconsistent-return-statements)
python/qemu/qmp.py:159:4: R1710: Either all return statements in a function should return an expression, or none of them should. (inconsistent-return-statements)
python/qemu/qmp.py:245:4: C0111: Missing method docstring (missing-docstring)
python/qemu/qmp.py:249:4: C0111: Missing method docstring (missing-docstring)
python/qemu/qmp.py:252:4: C0111: Missing method docstring (missing-docstring)
python/qemu/qmp.py:255:4: C0111: Missing method docstring (missing-docstring)

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191227134101.244496-3-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
10e163c039 python/qemu: qmp: Replace socket.error with OSError
The socket.error is deprecated from Python 3.3, instead it is
made a link to OSError. This change replaces the occurences
of socket.error with OSError.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20191227134101.244496-2-wainersm@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2020-02-07 15:12:48 +01:00
Wainer dos Santos Moschetta
e42cb9678c python/qemu: Remove unneeded imports in __init__
__init_.py import some sub-modules unnecessarily. So let's
clean it up.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Suggested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20191216191438.93418-6-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 18:39:51 -05:00
Wainer dos Santos Moschetta
d3ca7bb599 python/qemu: accel: Add tcg_available() method
This adds a method to check if the tcg accelerator is enabled
in the QEMU binary.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20191216191438.93418-5-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 18:39:04 -05:00
Wainer dos Santos Moschetta
53a049d7d7 python/qemu: accel: Strengthen kvm_available() checks
Currently kvm_available() checks for the presence of kvm module
and, if target and host arches don't mismatch. This patch adds
an 3rd checking: if QEMU binary was compiled with kvm
support.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20191216191438.93418-4-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 18:35:09 -05:00
Wainer dos Santos Moschetta
1650c3e304 python/qemu: accel: Add list_accel() method
Since commit cbe6d6365a the command `qemu -accel help` returns
the list of accelerators enabled in the QEMU binary. This adds
the list_accel() method which return that same list.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20191216191438.93418-3-wainersm@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 18:31:32 -05:00
Wainer dos Santos Moschetta
8b272e0018 python/qemu: Move kvm_available() to its own module
This creates the 'accel' Python module to be the home for
utilities that deal with accelerators. Also moved kvm_available()
from __init__.py to this new module.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191216191438.93418-2-wainersm@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 18:24:02 -05:00
Wainer dos Santos Moschetta
74b56bb553 python/qemu: Add set_qmp_monitor() to QEMUMachine
The QEMUMachine VM has a monitor setup on which an QMP
connection is always attempted on _post_launch() (executed
by launch()). In case the QEMU process immediatly exits
then the qmp.accept() (used to establish the connection) stalls
until it reaches timeout and consequently an exception raises.

That behavior is undesirable when, for instance, it needs to
gather information from the QEMU binary ($ qemu -cpu list) or a
test which launches the VM expecting its failure.

This patch adds the set_qmp_monitor() method to QEMUMachine that
allows turn off the creation of the monitor machinery on VM launch.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20191211185536.16962-2-wainersm@redhat.com>
[Cleber: trivial indentation fix]
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-12-16 10:59:50 -05:00
Cleber Rosa
0858096702 Python libs: close console sockets before shutting down the VMs
Currently, the console socket on QEMUMachine is closed after the QMP
command to gracefully exit QEMU is executed.  Because of a possible
deadlock (QEMU waiting for the socket to become writable) let's close
the console socket earlier.

Reference: <20190607034214.GB22416@habkost.net>
Reference: https://bugs.launchpad.net/qemu/+bug/1829779
From: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20190911023558.4880-2-crosa@redhat.com>
2019-10-28 19:04:04 -04:00
Max Reitz
32558ce7a4 iotests.py: Store socket files in $SOCK_DIR
iotests.py itself does not store socket files, but machine.py and
qtest.py do.  iotests.py needs to pass the respective path to them, and
they need to adhere to it.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20191017133155.5327-3-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-10-28 11:22:30 +01:00
Thomas Huth
976e8c5414 Replace '-machine accel=xyz' with '-accel xyz'
We've got a separate option to configure the accelerator nowadays, which
is shorter to type and the preferred way of specifying an accelerator.
Use it in the source and examples to show that it is the favored option.
(However, do not touch the places yet which also specify other machine
options or multiple accelerators - these are currently still better
handled with one single "-machine" statement instead)

Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190904052739.22123-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-19 12:01:48 +02:00
Max Reitz
4687133b81 iotests: Add @has_quit to vm.shutdown()
If a test has issued a quit command already (which may be useful to do
explicitly because the test wants to show its effects),
QEMUMachine.shutdown() should not do so again.  Otherwise, the VM may
well return an ECONNRESET which will lead QEMUMachine.shutdown() to
killing it, which then turns into a "qemu received signal 9" line.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-07-19 13:19:17 +02:00
John Snow
306dfcd686 machine.py: minor delinting
Since we're out in a new module, do a quick cursory pass of some of the
more obvious style issues.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20190627212816.27298-3-jsnow@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-07-01 19:02:10 -03:00
John Snow
abf0bf998d python/qemu: split QEMUMachine out from underneath __init__.py
It's not obvious that something named __init__.py actually houses
important code that isn't relevant to python packaging glue. Move the
QEMUMachine and related error classes out into their own module.

Adjust users to the new import location.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-Id: <20190627212816.27298-2-jsnow@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-07-01 19:02:10 -03:00
John Snow
9e8dfad045 event_match: always match on None value
Before, event_match didn't always recurse if the event value was not a
dictionary, and would instead check for equality immediately.

By delaying equality checking to post-recursion, we can allow leaf
values like "5" to match "None" and take advantage of the generic
None-returns-True clause.

This makes the matching a little more obviously consistent at the
expense of being able to check for explicit None values, which is
probably not that important given what this function is used for.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 20190528183857.26167-1-jsnow@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-06-14 14:16:57 +02:00
John Snow
f6f4b3f045 QEMUMachine: add events_wait method
Instead of event_wait which looks for a single event, add an events_wait
which can look for any number of events simultaneously. However, it
will still only return one at a time, whichever happens first.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 20190523170643.20794-4-jsnow@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-06-14 14:16:57 +02:00
Cleber Rosa
123990adbf scripts/qemu.py: support adding a console with the default serial device
The set_console() utility function either adds a device based on the
explicitly given device type, or adds a known good type of device
based on the machine type.

But, for a number of machine types, it may be impossible or
inconvenient to add the devices by means of "-device" command line
options, and then it may better to just use the "-serial" option and
let QEMU itself, based on the machine type, set the device
accordingly.

To achieve that, the behavior of set_console() now flags the intention
to add a console device on launch(), and if no explicit device type is
given the "-serial" option is going to be added to the QEMU command
line, instead of raising exceptions.

Based on testing with different machine types, the CONSOLE_DEV_TYPES
is not necessary anymore, so it's being removed, as is the logic to
use it.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20190312171824.5134-13-crosa@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-05-02 21:33:26 -03:00
Peter Maydell
6cb4f6db4f Python queue, 2019-02-22
Python:
 * introduce "python" directory with module namespace
 * log QEMU launch command line on qemu.QEMUMachine
 
 Acceptance Tests:
 * initrd 4GiB+ test
 * migration test
 * multi vm support in test class
 * bump Avocado version and drop "🥑 enable"
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJccE9jAAoJEGV+jTOl8gnzb1cP/j99kGbgfQJA4CftO9eRXdIm
 FKms4Z42n7KPus+/DphgfOXGYaHzPcqJQNguQYHuPlWaM3DWNU0rcFfAi/QdcZC1
 3iYMyQwiRubjnCMN0Ab4k+GhpCPW6fea6GTzyvqha4jNRhCIhx7v54GTDfxWESQp
 nqW40gAONGSG98DdFgubxg1YYqt7zlI9EVogGixe1gO9SVDkMEe7uH8tPCl9mt2m
 VjN7AeP/NTDmidiwu+2LwSpDC0UmpDAsFnxGI6rDcNx8NOnjSHkSHmtxNJ8j2uZz
 9P0ncGui+LfivdQh/yiBgrjTWXEXAx/oHKQCz7r8uJ8f60eYLFtjTHm//2G7lG48
 luLSnNKq/niM4k/vNhBQr0ByqoHHlpmqAjbmYqw7wdvImBbkXN2Gh9kjNs55S8VZ
 Z7wTceC0G7pyM3LCdFnikyCXKoRxLZ3AXQ3YXFN0PgX/IsyHVuBWBGPFkPkLwcRa
 JW3DEmwx/oeTg2MKp7iA3dGTUIarbsjp+R04erMznlLvE+NgmB8ENY8T+qZ6c+NM
 ZNyp1MH2nuTJsYxY3CkVKwPUqNSoaTLkMxvoZW5rKQdtvNinCYZpaeHuBchaHJed
 E63r0+1n9vAMH3PHDrypW5qjcjSDBOHS+8ajhr0jr2r+6grLQKYEP8q+PwubUaMq
 BsS5jOb8gLGC8ESfZxx/
 =dwff
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/cleber/tags/python-next-pull-request' into staging

Python queue, 2019-02-22

Python:
* introduce "python" directory with module namespace
* log QEMU launch command line on qemu.QEMUMachine

Acceptance Tests:
* initrd 4GiB+ test
* migration test
* multi vm support in test class
* bump Avocado version and drop "🥑 enable"

# gpg: Signature made Fri 22 Feb 2019 19:37:07 GMT
# gpg:                using RSA key 657E8D33A5F209F3
# gpg: Good signature from "Cleber Rosa <crosa@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 7ABB 96EB 8B46 B94D 5E0F  E9BB 657E 8D33 A5F2 09F3

* remotes/cleber/tags/python-next-pull-request:
  Acceptance tests: expect boot to extract 2GiB+ initrd with linux-v4.16
  Acceptance tests: use linux-3.6 and set vm memory to 4GiB
  tests.acceptance: adds simple migration test
  tests.acceptance: adds multi vm capability for acceptance tests
  scripts/qemu.py: log QEMU launch command line
  Introduce a Python module structure
  Acceptance tests: drop usage of "🥑 enable"

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-07 16:16:02 +00:00
Cleber Rosa
10314fb060 scripts/qemu.py: log QEMU launch command line
Even when the launch of QEMU succeeds, it's useful to have the command
line recorded.

Reviewed-by: Caio Carrara <ccarrara@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20190202005610.24048-2-crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-02-22 14:07:01 -05:00
Cleber Rosa
8f8fd9edba Introduce a Python module structure
This is a simple move of Python code that wraps common QEMU
functionality, and are used by a number of different tests
and scripts.

By treating that code as a real Python module, we can more easily:
 * reuse code
 * have a proper place for the module's own unittests
 * apply a more consistent style
 * generate documentation

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Caio Carrara <ccarrara@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20190206162901.19082-2-crosa@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>
2019-02-22 14:07:01 -05:00