Commit Graph

1292 Commits

Author SHA1 Message Date
Vladimir Sementsov-Ogievskiy
6eaa20c836 qemugdb/coroutine: fix arch_prctl has unknown return type
qemu coroutine command results in following error output:

Python Exception <class 'gdb.error'> 'arch_prctl' has unknown return
type; cast the call to its declared return type: Error occurred in
Python command: 'arch_prctl' has unknown return type; cast the call to
its declared return type

Fix it by giving it what it wants: arch_prctl return type.

Information on the topic:
   https://sourceware.org/gdb/onlinedocs/gdb/Calling.html

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20190206151425.105871-1-vsementsov@virtuozzo.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-02-12 11:49:17 +08:00
Alex Bennée
2d4e4c01b1 scripts/qemu.py: allow arches use KVM for their 32bit cousins
A lot of architectures can run their 32 bit cousins on KVM so the
kvm_available function needs to be a little less restricting when
deciding if KVM is available.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-02-08 17:32:35 +00:00
Philippe Mathieu-Daudé
d3b442654c archive-source.sh: Clone the submodules locally
We cloned the QEMU repository from the local storage. Since the
submodules are also available there, clone them too. This is
quicker and reduce network use.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[AJB: incorporated review suggestions from danpb]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-02-08 17:32:35 +00:00
Peter Maydell
632351e0e1 Pull request
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Merge remote-tracking branch 'remotes/elmarco/tags/dump-pull-request' into staging

Pull request

# gpg: Signature made Wed 06 Feb 2019 14:57:54 GMT
# gpg:                using RSA key DAE8E10975969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg:                 aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276  F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/dump-pull-request:
  dump: Set correct vaddr for ELF dump

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-07 14:20:46 +00:00
Jon Doron
e17bebd049 dump: Set correct vaddr for ELF dump
vaddr needs to be equal to the paddr since the dump file represents the
physical memory image.

Without setting vaddr correctly, GDB would load all the different memory
regions on top of each other to vaddr 0, thus making GDB showing the wrong
memory data for a given address.

Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20190109082203.27142-1-arilou@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2019-02-06 15:51:12 +01:00
Peter Maydell
3e29da9fd8 * cpu-exec fixes (Emilio, Laurent)
* TCG bugfix in queue.h (Paolo)
 * high address load for linuxboot (Zhijian)
 * PVH support (Liam, Stefano)
 * misc i386 changes (Paolo, Robert, Doug)
 * configure tweak for openpty (Thomas)
 * elf2dmp port to Windows (Viktor)
 * initial improvements to Makefile infrastructure (Yang + GSoC 2013)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* cpu-exec fixes (Emilio, Laurent)
* TCG bugfix in queue.h (Paolo)
* high address load for linuxboot (Zhijian)
* PVH support (Liam, Stefano)
* misc i386 changes (Paolo, Robert, Doug)
* configure tweak for openpty (Thomas)
* elf2dmp port to Windows (Viktor)
* initial improvements to Makefile infrastructure (Yang + GSoC 2013)

# gpg: Signature made Tue 05 Feb 2019 17:34:42 GMT
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (76 commits)
  queue: fix QTAILQ_FOREACH_REVERSE_SAFE
  scsi-generic: Convert from DPRINTF() macro to trace events
  scsi-disk: Convert from DPRINTF() macro to trace events
  pc: Use hotplug_handler_(plug|unplug|unplug_request)
  i386: hvf: Fix smp boot hangs
  hw/vfio/Makefile.objs: Create new CONFIG_* variables for VFIO core and PCI
  hw/i2c/Makefile.objs: Create new CONFIG_* variables for EEPROM and ACPI controller
  hw/tricore/Makefile.objs: Create CONFIG_* for tricore
  hw/openrisc/Makefile.objs: Create CONFIG_* for openrisc
  hw/moxie/Makefile.objs: Conditionally build moxie
  hw/hppa/Makefile.objs: Create CONFIG_* for hppa
  hw/cris/Makefile.objs: Create CONFIG_* for cris
  hw/alpha/Makefile.objs: Create CONFIG_* for alpha
  hw/sparc64/Makefile.objs: Create CONFIG_* for sparc64
  hw/riscv/Makefile.objs: Create CONFIG_* for riscv boards
  hw/nios2/Makefile.objs: Conditionally build nios2
  hw/xtensa/Makefile.objs: Build xtensa_sim and xtensa_fpga conditionally
  hw/lm32/Makefile.objs: Conditionally build lm32 and milkmyst
  hw/sparc/Makefile.objs: CONFIG_* for sun4m and leon3 created
  hw/s390/Makefile.objs: Create new CONFIG_* variables for s390x boards and devices
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	qemu-deprecated.texi
2019-02-05 19:39:22 +00:00
Li Zhijian
06e0259a7c i386: import & use bootparam.h
it's from v4.20-rc5.

CC: Stefano Garzarella <sgarzare@redhat.com>
CC: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-05 16:50:18 +01:00
Paolo Bonzini
2a11ee1019 tap: flush STDOUT on newline
This makes it easier to follow what is going on.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-02-05 16:50:16 +01:00
Paolo Bonzini
a0a6ef91a4 scripts/update-linux-headers.sh: adjust for Linux 4.21-rc1 (or 5.0-rc1)
There are three new indirect inclusions: vhost_types.h, which we'll
shortly put to use as a portable header and thus is copied to
standard-headers; and new per-subtarget versions of MIPS unistd.h
and PowerPC unistd.h.

Because vhost.h includes vhost_types.h, we also need a proxy include
from linux/vhost.h to standard-headers.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-02-04 00:08:58 -05:00
Alberto Garcia
a5df73baaf qtest.py: Wait for the result of qtest commands
The cmd() method of the QEMUQtestProtocol class sends a qtest command
to QEMU but doesn't wait for the return message ("OK", "FAIL", "ERR").
Because of this, it can return control to the caller before the
command has actually finished.

In cases like clock_step or clock_set this means that cmd() can return
before all the timers triggered by the clock change have been fired.
This can be fixed by making cmd() wait for the output of the qtest
command.

This fixes iotests 093 and 136, which are flaky since commit
8258292e18 when the machine is under heavy workload.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-02-01 13:46:45 +01:00
Peter Maydell
cfe6c54769 Block patches:
- New debugging QMP command to explore block graphs
 - Converted DPRINTF()s to trace events
 - Fixed qemu-io's use of getopt() for systems with optreset
 - Minor NVMe emulation fixes
 - An iotest fix
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Merge remote-tracking branch 'remotes/xanclic/tags/pull-block-2019-01-31' into staging

Block patches:
- New debugging QMP command to explore block graphs
- Converted DPRINTF()s to trace events
- Fixed qemu-io's use of getopt() for systems with optreset
- Minor NVMe emulation fixes
- An iotest fix

# gpg: Signature made Thu 31 Jan 2019 00:51:46 GMT
# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>" [full]
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* remotes/xanclic/tags/pull-block-2019-01-31:
  iotests: Allow 147 to be run concurrently
  iotests: Bind qemu-nbd to localhost in 147
  iotests.py: Add qemu_nbd_pipe()
  nvme: use pci_dev directly in nvme_realize
  nvme: ensure the num_queues is not zero
  nvme: use TYPE_NVME instead of constant string
  qemu-io: Add generic function for reinitializing optind.
  block/sheepdog: Convert from DPRINTF() macro to trace events
  block/file-posix: Convert from DPRINTF() macro to trace events
  block/curl: Convert from DPRINTF() macro to trace events
  block/ssh: Convert from DPRINTF() macro to trace events
  scripts: add render_block_graph function for QEMUMachine
  qapi: add x-debug-query-block-graph

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-31 19:26:09 +00:00
Peter Maydell
460da1005d Pull request
User-visible changes:
  * The new qemu-trace-stap script makes it convenient to collect traces without
    writing SystemTap scripts.  See "man qemu-trace-stap" for details.
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Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

Pull request

User-visible changes:
 * The new qemu-trace-stap script makes it convenient to collect traces without
   writing SystemTap scripts.  See "man qemu-trace-stap" for details.

# gpg: Signature made Wed 30 Jan 2019 03:17:57 GMT
# gpg:                using RSA key 9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
  trace: rerun tracetool after ./configure changes
  trace: improve runstate tracing
  trace: add ability to do simple printf logging via systemtap
  trace: forbid use of %m in trace event format strings
  trace: enforce that every trace-events file has a final newline
  display: ensure qxl log_buf is a nul terminated string

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-31 12:03:40 +00:00
Vladimir Sementsov-Ogievskiy
dc2b651a0b scripts: add render_block_graph function for QEMUMachine
Render block nodes graph with help of graphviz. This new function is
for debugging, so there is no sense to put it into qemu.py as a method
of QEMUMachine. Let's instead put it separately.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20181221170909.25584-3-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2019-01-31 00:38:19 +01:00
Peter Maydell
b94e809d3e checkpatch: Don't emit spurious warnings about block comments
In checkpatch we attempt to check for and warn about
block comments which start with /* or /** followed by a
non-blank. Unfortunately a bug in the regex meant that
we would incorrectly warn about comments starting with
"/**" with no following text:

  git show 9813dc6ac3954d58ba16b3920556f106f97e1c67|./scripts/checkpatch.pl -
  WARNING: Block comments use a leading /* on a separate line
  #34: FILE: tests/libqtest.h:233:
  +/**

The sequence "/\*\*?" was intended to match either "/*" or "/**",
but Perl's semantics for '?' allow it to backtrack and try the
"matches 0 chars" option if the "matches 1 char" choice leads to
a failure of the rest of the regex to match.  Switch to "/\*\*?+"
which uses what perlre(1) calls the "possessive" quantifier form:
this means that if it matches the "/**" string it will not later
backtrack to matching just the "/*" prefix.

The other end of the regex is also wrong: it is attempting
to check for "/* or /** followed by something that isn't
just whitespace", but [ \t]*.+[ \t]* will match on pure
whitespace. This is less significant but means that a line
with just a comment-starter followed by trailing whitespace
will generate an incorrect warning about block comment style
as well as the correct error about trailing whitespace which
a different checkpatch test emits.

Fixes: 8c06fbdf36 ("scripts/checkpatch.pl: Enforce multiline comment syntax")
Reported-by: Thomas Huth <thuth@redhat.com>
Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20190118165050.22270-1-peter.maydell@linaro.org
2019-01-29 11:46:05 +00:00
Paolo Bonzini
651514df88 decodetree: re.fullmatch was added in 3.4
Python 3 versions earlier than 3.4 do not have it, use the
same workaround that is in place for 3.0.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1548410602-16008-1-git-send-email-pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-25 11:41:42 -02:00
Nisarg Shah
55e0a34635 device-crash-test: Python 3 compatibility fix
Restrict whitelist entry stats in debug mode to be sorted only by
"count", since Python 3 does not implicitly support comparing
dictionaries.

Signed-off-by: Nisarg Shah <nshah@disroot.org>
Message-Id: <20190116183358.30287-1-nshah@disroot.org>
[ehabkost: removed 2 unnecessary hunks from patch]
[ehabkost: edited commit message]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-25 11:41:33 -02:00
Peter Maydell
9dd0d8111f QAPI patches for 2019-01-24
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Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2019-01-24' into staging

QAPI patches for 2019-01-24

# gpg: Signature made Thu 24 Jan 2019 14:25:19 GMT
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qapi-2019-01-24:
  json: Fix % handling when not interpolating
  qmp: Add examples to qom list, get, and set commands
  qapi: Eliminate indirection through qmp_event_get_func_emit()
  qapi: Belatedly update docs for commit 9c2f56e9f9

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-25 11:52:12 +00:00
Daniel P. Berrangé
62dd1048c0 trace: add ability to do simple printf logging via systemtap
The dtrace systemtap trace backend for QEMU is very powerful but it is
also somewhat unfriendly to users who aren't familiar with systemtap,
or who don't need its power right now.

  stap -e "....some strange script...."

The 'log' backend for QEMU by comparison is very crude but incredibly
easy to use:

 $ qemu -d trace:qio* ...some args...
 23266@1547735759.137292:qio_channel_socket_new Socket new ioc=0x563a8a39d400
 23266@1547735759.137305:qio_task_new Task new task=0x563a891d0570 source=0x563a8a39d400 func=0x563a86f1e6c0 opaque=0x563a89078000
 23266@1547735759.137326:qio_task_thread_start Task thread start task=0x563a891d0570 worker=0x563a86f1ce50 opaque=0x563a891d9d90
 23273@1547735759.137491:qio_task_thread_run Task thread run task=0x563a891d0570
 23273@1547735759.137503:qio_channel_socket_connect_sync Socket connect sync ioc=0x563a8a39d400 addr=0x563a891d9d90
 23273@1547735759.138108:qio_channel_socket_connect_fail Socket connect fail ioc=0x563a8a39d400

This commit introduces a way to do simple printf style logging of probe
points using systemtap. In particular it creates another set of tapsets,
one per emulator:

  /usr/share/systemtap/tapset/qemu-*-log.stp

These pre-define probe functions which simply call printf() on their
arguments. The printf() format string is taken from the normal
trace-events files, with a little munging to the format specifiers
to cope with systemtap's more restrictive syntax.

With this you can now do

 $ stap -e 'probe qemu.system.x86_64.log.qio*{}'
 22806@1547735341399856820 qio_channel_socket_new Socket new ioc=0x56135d1d7c00
 22806@1547735341399862570 qio_task_new Task new task=0x56135cd66eb0 source=0x56135d1d7c00 func=0x56135af746c0 opaque=0x56135bf06400
 22806@1547735341399865943 qio_task_thread_start Task thread start task=0x56135cd66eb0 worker=0x56135af72e50 opaque=0x56135c071d70
 22806@1547735341399976816 qio_task_thread_run Task thread run task=0x56135cd66eb0

We go one step further though and introduce a 'qemu-trace-stap' tool to
make this even easier

 $ qemu-trace-stap run qemu-system-x86_64 'qio*'
 22806@1547735341399856820 qio_channel_socket_new Socket new ioc=0x56135d1d7c00
 22806@1547735341399862570 qio_task_new Task new task=0x56135cd66eb0 source=0x56135d1d7c00 func=0x56135af746c0 opaque=0x56135bf06400
 22806@1547735341399865943 qio_task_thread_start Task thread start task=0x56135cd66eb0 worker=0x56135af72e50 opaque=0x56135c071d70
 22806@1547735341399976816 qio_task_thread_run Task thread run task=0x56135cd66eb0

This tool is clever in that it will automatically change the
SYSTEMTAP_TAPSET env variable to point to the directory containing the
right set of probes for the QEMU binary path you give it. This is useful
if you have QEMU installed in /usr but are trying to test and trace a
binary in /home/berrange/usr/qemu-git. In that case you'd do

 $ qemu-trace-stap run /home/berrange/usr/qemu-git/bin/qemu-system-x86_64 'qio*'

And it'll make sure /home/berrange/usr/qemu-git/share/systemtap/tapset
is used for the trace session

The 'qemu-trace-stap' script takes a verbose arg so you can understand
what it is running

 $ qemu-trace-stap run /home/berrange/usr/qemu-git/bin/qemu-system-x86_64 'qio*'
 Using tapset dir '/home/berrange/usr/qemu-git/share/systemtap/tapset' for binary '/home/berrange/usr/qemu-git/bin/qemu-system-x86_64'
 Compiling script 'probe qemu.system.x86_64.log.qio* {}'
 Running script, <Ctrl>-c to quit
 ...trace output...

It can enable multiple probes at once

 $ qemu-trace-stap run qemu-system-x86_64 'qio*' 'qcrypto*' 'buffer*'

By default it monitors all existing running processes and all future
launched proceses. This can be restricted to a specific PID using the
--pid arg

 $ qemu-trace-stap run --pid 2532 qemu-system-x86_64 'qio*'

Finally if you can't remember what probes are valid it can tell you

 $ qemu-trace-stap list qemu-system-x86_64
 ahci_check_irq
 ahci_cmd_done
 ahci_dma_prepare_buf
 ahci_dma_prepare_buf_fail
 ahci_dma_rw_buf
 ahci_irq_lower
 ...snip...

Or list just those matching a prefix pattern

 $ qemu-trace-stap list -v qemu-system-x86_64 'qio*'
 Using tapset dir '/home/berrange/usr/qemu-git/share/systemtap/tapset' for binary '/home/berrange/usr/qemu-git/bin/qemu-system-x86_64'
 Listing probes with name 'qemu.system.x86_64.log.qio*'
 qio_channel_command_abort
 qio_channel_command_new_pid
 qio_channel_command_new_spawn
 qio_channel_command_wait
 qio_channel_file_new_fd
 ...snip...

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190123120016.4538-5-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-01-24 14:16:56 +00:00
Daniel P. Berrangé
772f1b3721 trace: forbid use of %m in trace event format strings
The '%m' format instructs glibc's printf()/syslog() implementation to
insert the contents of strerror(errno). Since this is a glibc extension
it should generally be avoided in QEMU due to need for portability to a
variety of platforms.

Even though vfio is Linux-only code that could otherwise use "%m", it
must still be avoided in trace-events files because several of the
backends do not use the format string and so this error information is
invisible to them.

The errno string value should be given as an explicit trace argument
instead, making it accessible to all backends. This also allows it to
work correctly with future patches that use the format string with
systemtap's simple printf code.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190123120016.4538-4-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-01-24 14:16:56 +00:00
Daniel P. Berrangé
7760636309 trace: enforce that every trace-events file has a final newline
When generating the trace-events-all file, the build system simply
concatenates all the individual trace-events files. If any one of those
files does not have a final newline, the printf format string will have
the contents of the first line of the next file appended to it, which is
usually a '#' comment.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190123120016.4538-3-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-01-24 14:16:56 +00:00
Markus Armbruster
a95291007b qapi: Eliminate indirection through qmp_event_get_func_emit()
The qapi_event_send_FOO() functions emit events like this:

    QMPEventFuncEmit emit;

    emit = qmp_event_get_func_emit();
    if (!emit) {
        return;
    }

    qmp = qmp_event_build_dict("FOO");
    [put event arguments into @qmp...]

    emit(QAPI_EVENT_FOO, qmp);

The value of qmp_event_get_func_emit() depends only on the program:

* In qemu-system-FOO, it's always monitor_qapi_event_queue.

* In tests/test-qmp-event, it's always event_test_emit.

* In all other programs, it's always null.

This is exactly the kind of dependence the linker is supposed to
resolve; we don't actually need an indirection.

Note that things would fall apart if we linked more than one QAPI
schema into a single program: each set of qapi_event_send_FOO() uses
its own event enumeration, yet they share a single emit function.
Which takes the event enumeration as an argument.  Which one if
there's more than one?

More seriously: how does this work even now?  qemu-system-FOO wants
QAPIEvent, and passes a function taking that to
qmp_event_set_func_emit().  test-qmp-event wants test_QAPIEvent, and
passes a function taking that to qmp_event_set_func_emit().

It works by type trickery, of course:

    typedef void (*QMPEventFuncEmit)(unsigned event, QDict *dict);

    void qmp_event_set_func_emit(QMPEventFuncEmit emit);

    QMPEventFuncEmit qmp_event_get_func_emit(void);

We use unsigned instead of the enumeration type.  Relies on both
enumerations boiling down to unsigned, which happens to be true for
the compilers we use.

Clean this up as follows:

* Generate qapi_event_send_FOO() that call PREFIX_qapi_event_emit()
  instead of the value of qmp_event_set_func_emit().

* Generate a prototype for PREFIX_qapi_event_emit() into
  qapi-events.h.

* PREFIX_ is empty for qapi/qapi-schema.json, and test_ for
  tests/qapi-schema/qapi-schema-test.json.  It's qga_ for
  qga/qapi-schema.json, and doc-good- for
  tests/qapi-schema/doc-good.json, but those don't define any events.

* Rename monitor_qapi_event_queue() to qapi_event_emit() instead of
  passing it to qmp_event_set_func_emit().  This takes care of
  qemu-system-FOO.

* Rename event_test_emit() to test_qapi_event_emit() instead of
  passing it to qmp_event_set_func_emit().  This takes care of
  tests/test-qmp-event.

* Add a qapi_event_emit() that does nothing to stubs/monitor.c.  This
  takes care of all other programs that link code emitting QMP events.

* Drop qmp_event_set_func_emit(), qmp_event_get_func_emit().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181218182234.28876-3-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[Commit message typos fixed]
2019-01-24 10:01:05 +01:00
Alex Bennée
1627a36ead scripts/archive-source: include softfloat tests
We need these if we want to run unit/softfloat tests in our docker
containers.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-01-23 08:30:01 +00:00
Eric Blake
ae560cc34f maint: Allow for EXAMPLES in texi2pod
The next commit will add an EXAMPLES section to qemu-nbd.8;
for that to work, we need to recognize EXAMPLES in texi2pod.
We also need to add a dependency from all man pages against
the generator script, since a change to the generator may
cause the resulting man page to differ.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
Message-Id: <20190117193658.16413-3-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
2019-01-21 15:49:51 -06:00
Peter Maydell
9bd641b10a Python queue, 2019-01-17
Fixes:
 * Actually test different Python versions on Travis CI
 * Fix qemu.py error message when qemu dies from signal
 
 Cleanups:
 * Track Python version on config-host.mak
 * Remove fixed crashes from scripts/device-crash-test
 * Acceptance tests: Linux initrd checking test
 * Fix utf-8 mangling at scripts/replay-dump.py
 * Remove unused python imports from multiple scripts
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Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

Python queue, 2019-01-17

Fixes:
* Actually test different Python versions on Travis CI
* Fix qemu.py error message when qemu dies from signal

Cleanups:
* Track Python version on config-host.mak
* Remove fixed crashes from scripts/device-crash-test
* Acceptance tests: Linux initrd checking test
* Fix utf-8 mangling at scripts/replay-dump.py
* Remove unused python imports from multiple scripts

# gpg: Signature made Thu 17 Jan 2019 20:16:41 GMT
# gpg:                using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
  scripts/replay-dump.py: fix utf-8 mangling
  qemu.py: Fix error message when qemu dies from signal
  Acceptance tests: add Linux initrd checking test
  check-help: visual and content improvements
  Travis CI: make specified Python versions usable on jobs
  check-venv: use recorded Python version
  configure: keep track of Python version
  scripts: Remove unused python imports
  scripts/device-crash-test: Remove known crashes

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-18 15:56:41 +00:00
Alex Bennée
49ebe9b158 scripts/replay-dump.py: fix utf-8 mangling
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20190117153338.11820-1-alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-17 17:52:40 -02:00
Eric Blake
0cabc8f15e qemu.py: Fix error message when qemu dies from signal
When qemu dies from a signal, the python code gets a negative
value for exitcode; but signal numbers are positive.  Copy the
pattern used in qemu-iotests/iotests.py for reporting a positive
value.

CC: qemu-trivial@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190111201330.14473-1-eblake@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-17 17:52:40 -02:00
Philippe Mathieu-Daudé
9ab5a24b52 scripts: Remove unused python imports
Reported-by: LGTM code review
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181108143422.15955-1-philmd@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-17 17:52:40 -02:00
Thomas Huth
285cecd655 scripts/device-crash-test: Remove known crashes
Looks like we've fixed them all already in the past months, e.g. with:

 f7d6bfcdc0
 spapr_pci: fail gracefully with non-pseries machine types

 2363d5ee23
 hw/ppc/spapr_cpu_core: Add a proper check for spapr machine

 ef0e8fc768
 iommu: Don't crash if machine is not PC_MACHINE

 8929fc3a55
 hw/block/pflash_cfi*.c: fix confusing assert fail message

... so we can remove these entries from the ERROR_WHITELIST now.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1541510826-21031-1-git-send-email-thuth@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-01-17 17:52:39 -02:00
Thomas Huth
5a0e75f0a9 hw/misc/ivshmem: Remove deprecated "ivshmem" legacy device
It's been marked as deprecated in QEMU v2.6.0 already, so really nobody
should use the legacy "ivshmem" device anymore (but use ivshmem-plain or
ivshmem-doorbell instead). Time to remove the deprecated device now.

Belatedly also update a mention of the deprecated "ivshmem" in the file
docs/specs/ivshmem-spec.txt to "ivshmem-doorbell". Missed in commit
5400c02b90 ("ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem").

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2019-01-14 19:31:04 -05:00
Paolo Bonzini
6afeb39713 scripts: add script to convert multiline comments into 4-line format
Since we're adding checkpatch rules to enforce 4-line multiline comment
format, i.e. with lone /* and */, this script can be run on existing
code so that the comment style does not become inconsistent within a
file.

The alternative to awk-in-a-shell-script could be Perl, which also
supports -i directly, but a2p seems to have bitrotten and I didn't quite
feel like writing this twice...

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Paolo Bonzini
50db69a15f checkpatch: warn about qemu/queue.h head structs that are not typedef-ed
These are just like any other struct or union, so they should have
CamelCase typedefs.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Paolo Bonzini
7274f01bb8 qemu/queue.h: reimplement QTAILQ without pointer-to-pointers
QTAILQ is a doubly linked list, with a pointer-to-pointer to the last
element from the head, and the previous element from each node.

But if you squint enough, QTAILQ becomes a combination of a singly-linked
forwards list, and another singly-linked list which goes backwards and
is circular.  This is the idea that lets QTAILQ implement reverse
iteration: only, because the backwards list points inside the node,
accessing the previous element needs to go two steps back and one
forwards.

What this patch does is implement it in these terms, without actually
changing the in-memory layout at all.  The coexistence of the two lists
is realized by making QTAILQ_HEAD and QTAILQ_ENTRY unions of the forwards
pointer and a generic QTailQLink node.  Thq QTailQLink can walk the list in
both directions; the union is needed so that the forwards pointer can
have the correct type, as a sort of poor man's template.  While there
are other ways to get the same layout without a union, this one has
the advantage of simpler operation in the debugger, because the fields
tqh_first and tqe_next still exist as before the patch.  Those fields are
also used by scripts/qemugdb/mtree.py, so it's a good idea to preserve them.

The advantage of the new representation is that the two-back-one-forward
dance done by backwards accesses can be done all while operating on
QTailQLinks.  No casting to the head struct is needed anymore because,
even though the QTailQLink's forward pointer is a void *, we can use
typeof to recover the correct type.  This patch only changes the
implementation, not the interface.  The next patch will remove the head
struct name from the backwards visit macros.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Paolo Bonzini
f95bb39cf1 qemu/queue.h: remove Q_TAILQ_{HEAD,ENTRY}
These are not present for other kinds of queue, and unused.
Zap them before more changes are made to the QTAILQ
implementation.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Paolo Bonzini
9df43317b8 test: replace gtester with a TAP driver
gtester is deprecated by upstream glib (see for example the announcement
at https://blog.gtk.org/2018/07/11/news-from-glib-2-58/) and it does
not support tests that call g_test_skip in some glib stable releases.

glib suggests instead using Automake's TAP support, which gtest itself
supports since version 2.38 (QEMU's minimum requirement is 2.40).
We do not support Automake, but we can use Automake's code to beautify
the TAP output.  I chose to use the Perl copy rather than the shell/awk
one, with some changes so that it can accept TAP through stdin, in order
to reuse Perl's TAP parsing package.  This also avoids duplicating the
parser between tap-driver.pl and tap-merge.pl.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1543513531-1151-3-git-send-email-pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:52 +01:00
Paolo Bonzini
1db4269f34 checkpatch: colorize output to terminal
Add optional colors to make seeing message types a bit easier.
The default is to show them on a tty.

Inspired by Linux commits 57230297116fa ("checkpatch: colorize output
to terminal") and 737c0767758b ("checkpatch: change format of --color
argument to --color[=WHEN]").

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2019-01-11 13:57:23 +01:00
Paolo Bonzini
c182b61996 checkpatch: improve handling of multiple patches or files
Similar to how patchew output looks like for multiple patches,
say what file or patch is being tested _before_ emitting errors.
This is clearer to a human that scans the output from top to
bottom.

In addition, provide a truncated commit hash and subject instead of
the full hash, and process the commits first-to-last rather than
last-to-first.

Inspired by Linux commit 0dea9f1eef86bedacad91b6f652ca1ab0d08854c
("checkpatch: reduce number of `git log` calls with --git", 2016-03-20).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 13:57:23 +01:00
Paolo Bonzini
fd9c0cfeb7 checkpatch: check Signed-off-by in --mailback mode
Pull the test before the anticipated exits from the process sub.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 13:57:23 +01:00
Paolo Bonzini
1ff7ebf33b checkpatch: fix premature exit when no input or --mailback
In some cases, checkpatch's process subroutine is exiting the
whole process.  This is wrong, just return from the subroutine
instead.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 13:57:23 +01:00
Marc-André Lureau
ce1a1aec47 qapi: fix flat union on uncovered branches conditionals
Default branches variant should use the member conditional.

This fixes compilation with --disable-replication.

Fixes: 335d10cd8e

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181217204046.14861-1-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Long line wrapped]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-18 07:57:36 +01:00
Peter Maydell
b019f5e537 miscellaneous patches:
* checkpatch.pl: Enforce multiline comment syntax
  * Rename cpu_physical_memory_write_rom() to address_space_write_rom()
  * disas, monitor, elf_ops: Use address_space_read() to read memory
  * Remove load_image() in favour of load_image_size()
  * Fix some minor memory leaks in arm boards/devices
  * virt: fix broken indentation
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-misc-20181214' into staging

miscellaneous patches:
 * checkpatch.pl: Enforce multiline comment syntax
 * Rename cpu_physical_memory_write_rom() to address_space_write_rom()
 * disas, monitor, elf_ops: Use address_space_read() to read memory
 * Remove load_image() in favour of load_image_size()
 * Fix some minor memory leaks in arm boards/devices
 * virt: fix broken indentation

# gpg: Signature made Fri 14 Dec 2018 14:41:20 GMT
# gpg:                using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-misc-20181214: (22 commits)
  virt: Fix broken indentation
  target/arm: Create timers in realize, not init
  tests/test-arm-mptimer: Don't leak string memory
  hw/sd/sdhci: Don't leak memory region in sdhci_sysbus_realize()
  hw/arm/mps2-tz.c: Free mscname string in make_dma()
  target/arm: Free name string in ARMCPRegInfo hashtable entries
  include/hw/loader.h: Document load_image_size()
  hw/core/loader.c: Remove load_image()
  device_tree.c: Don't use load_image()
  hw/block/tc58128.c: Don't use load_image()
  hw/i386/multiboot.c: Don't use load_image()
  hw/i386/pc.c: Don't use load_image()
  hw/pci/pci.c: Don't use load_image()
  hw/smbios/smbios.c: Don't use load_image()
  hw/ppc/ppc405_boards: Don't use load_image()
  hw/ppc/mac_newworld, mac_oldworld: Don't use load_image()
  elf_ops.h: Use address_space_write() to write memory
  monitor: Use address_space_read() to read memory
  disas.c: Use address_space_read() to read memory
  Rename cpu_physical_memory_write_rom() to address_space_write_rom()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-12-16 16:32:43 +00:00
Peter Maydell
81781be3c9 QAPI patches for 2018-12-13
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Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2018-12-13-v2' into staging

QAPI patches for 2018-12-13

# gpg: Signature made Fri 14 Dec 2018 05:53:51 GMT
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qapi-2018-12-13-v2: (32 commits)
  qapi: add conditions to REPLICATION type/commands on the schema
  qapi: add more conditions to SPICE
  qapi: add condition to variants documentation
  qapi: add 'If:' condition to struct members documentation
  qapi: add 'If:' condition to enum values documentation
  qapi: Add #if conditions to generated code members
  qapi: add 'if' to alternate members
  qapi: add 'if' to union members
  qapi: Add 'if' to implicit struct members
  qapi: add a dictionary form for TYPE
  qapi-events: add 'if' condition to implicit event enum
  qapi: add 'if' to enum members
  qapi: add a dictionary form with 'name' key for enum members
  qapi: improve reporting of unknown or missing keys
  qapi: factor out checking for keys
  tests: print enum type members more like object type members
  qapi: change enum visitor and gen_enum* to take QAPISchemaMember
  qapi: Do not define enumeration value explicitly
  qapi: break long lines at 'data' member
  qapi: rename QAPISchemaEnumType.values to .members
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-12-15 21:19:06 +00:00
Peter Maydell
8c06fbdf36 scripts/checkpatch.pl: Enforce multiline comment syntax
We now require Linux-kernel-style multiline comments:
    /*
     * line one
     * line two
     */

Enforce this in checkpatch.pl, by backporting the relevant
parts of the Linux kernel's checkpatch.pl. (The only changes
needed are that Linux's checkpatch.pl WARN() function takes
an extra argument that ours does not, and the kernel has a
special case for networking code we don't want.)"

The kernel's checkpatch does not enforce "leading /* on
a line of its own, so that part is unique to QEMU's checkpatch.

Sample warning output:

WARNING: Block comments use a leading /* on a separate line
#34: FILE: hw/intc/arm_gicv3_common.c:39:
+    /* Older versions of QEMU had a bug in the handling of state save/restore

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
2018-12-14 13:30:48 +00:00
Peter Maydell
0f98c99458 - Explicitly check for minimum compiler versions
- Remove obsolete code for old compilers that is now not required anymore
 - Fix a duplicated typedef for Clang 3.4
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Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2018-12-12' into staging

- Explicitly check for minimum compiler versions
- Remove obsolete code for old compilers that is now not required anymore
- Fix a duplicated typedef for Clang 3.4

# gpg: Signature made Wed 12 Dec 2018 09:05:50 GMT
# gpg:                using RSA key 2ED9D774FE702DB5
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>"
# gpg:                 aka "Thomas Huth <thuth@redhat.com>"
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>"
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>"
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* remotes/huth-gitlab/tags/pull-request-2018-12-12:
  i2c: Move typedef of bitbang_i2c_interface to i2c.h
  Remove QEMU_ARTIFICIAL macro
  includes: Replace QEMU_GNUC_PREREQ with "__has_builtin || !defined(__clang__)"
  audio/alsaaudio: Remove compiler check around pragma
  tcg/tcg.h: Remove GCC check for tcg_debug_assert() macro
  configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012]
  configure: Remove obsolete check for Clang < 3.2
  configure: Add a test for the minimum compiler version

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-12-14 10:19:47 +00:00
Marc-André Lureau
01ae9cc254 qapi: add condition to variants documentation
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181213123724.4866-21-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-14 06:52:48 +01:00
Marc-André Lureau
8867bf0808 qapi: add 'If:' condition to struct members documentation
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181213123724.4866-20-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-14 06:52:48 +01:00
Marc-André Lureau
a35c9bf82a qapi: add 'If:' condition to enum values documentation
Use a common function to generate the "If:..." line.

While at it, get rid of the existing \n\n (no idea why it was
there). Use a line-break in member description, this seems to look
slightly better in the plaintext version.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181213123724.4866-19-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-14 06:52:48 +01:00
Marc-André Lureau
8ee06f61e1 qapi: Add #if conditions to generated code members
Wrap generated enum and struct members and their supporting code with
#if/#endif, using the .ifcond members added in the previous patches.

We do enum and struct in a single patch because union tag enum and the
associated variants tie them together, and dealing with that to split
the patch doesn't seem worthwhile.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181213123724.4866-18-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-14 06:52:48 +01:00
Marc-André Lureau
3e270dcacc qapi: add 'if' to alternate members
Add 'if' key to alternate members:

{ 'alternate': 'TestIfAlternate', 'data':
  { 'alt': { 'type': 'TestStruct', 'if': 'COND' } } }

Generated code is not changed by this patch but with "qapi: add #if
conditions to generated code".

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181213123724.4866-17-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-13 19:20:11 +01:00
Marc-André Lureau
a2724280fb qapi: add 'if' to union members
Add 'if' key to union members:

{ 'union': 'TestIfUnion', 'data':
    'mem': { 'type': 'str', 'if': 'COND'} }

The generated code remains unconditional for now. Later patches
generate the conditionals.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181213123724.4866-16-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-13 19:20:11 +01:00
Marc-André Lureau
ccadd6bcba qapi: Add 'if' to implicit struct members
The generated code is for now *unconditional*.  Later patches generate
the conditionals.

Note that union discriminators may not have 'if' conditionals.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20181213123724.4866-14-marcandre.lureau@redhat.com>
Message-Id: <20181213123724.4866-15-marcandre.lureau@redhat.com>
[Patches squashed, commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-12-13 19:20:11 +01:00