Merge tag 'chr-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

chardev patch queue

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Merge tag 'chr-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging

chardev patch queue

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# =+W1p
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 15 Oct 2024 09:49:53 BST
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# 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

* tag 'chr-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
tests/unit/test-char: implement a few mux remove test cases
chardev/mux: implement detach of frontends from mux
chardev/mux: switch mux frontends management to bitset
chardev/mux: introduce `mux_chr_attach_frontend() call
chardev/mux: convert size members to unsigned int
chardev/mux: use bool type for `linestart` and `term_got_escape`
chardev/chardev-internal: remove unused `max_size` struct member
chardev/char: fix qemu_chr_is_busy() check

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

show more ...

chardev/mux: implement detach of frontends from mux

With bitset management now it becomes feasible to implement
the logic of detaching frontends from multiplexer.

Signed-off-by: Roman Penyaev <r.pe

chardev/mux: implement detach of frontends from mux

With bitset management now it becomes feasible to implement
the logic of detaching frontends from multiplexer.

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: qemu-devel@nongnu.org
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20241014152408.427700-8-r.peniaev@gmail.com>

show more ...

chardev/mux: introduce `mux_chr_attach_frontend() call

Move away logic which attaches frontend device to a mux
from `char-fe.c` to actual `char-mux.c` implementation
and make it a separate function.

chardev/mux: introduce `mux_chr_attach_frontend() call

Move away logic which attaches frontend device to a mux
from `char-fe.c` to actual `char-mux.c` implementation
and make it a separate function.

No logic changes are made.

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: qemu-devel@nongnu.org
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20241014152408.427700-6-r.peniaev@gmail.com>

show more ...

chardev/mux: convert size members to unsigned int

There is no sense to keep `focus`, `mux_cnt`, `prod`, `cons`
and `tag` variables as signed, those represent either size,
either position in array, w

chardev/mux: convert size members to unsigned int

There is no sense to keep `focus`, `mux_cnt`, `prod`, `cons`
and `tag` variables as signed, those represent either size,
either position in array, which both are unsigned.

`focus` member of `MuxChardev` is kept signed, because initially
set to -1.

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: qemu-devel@nongnu.org
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20241014152408.427700-5-r.peniaev@gmail.com>

show more ...

Merge tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru into staging

Error reporting patches for 2024-04-24

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru into staging

Error reporting patches for 2024-04-24

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# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 24 Apr 2024 12:52:58 AM PDT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [undefined]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-error-2024-04-24' of https://repo.or.cz/qemu/armbru:
qapi: Inline and remove QERR_PROPERTY_VALUE_BAD definition
qapi: Inline and remove QERR_MIGRATION_ACTIVE definition
qapi: Correct error message for 'vcpu_dirty_limit' parameter
qapi: Inline and remove QERR_INVALID_PARAMETER_TYPE definition
qapi: Inline QERR_INVALID_PARAMETER_TYPE definition (constant value)
qapi: Inline and remove QERR_INVALID_PARAMETER definition
qapi: Inline and remove QERR_DEVICE_NO_HOTPLUG definition
qapi: Inline and remove QERR_DEVICE_HAS_NO_MEDIUM definition
qapi: Inline and remove QERR_BUS_NO_HOTPLUG definition
error: Drop superfluous #include "qapi/qmp/qerror.h"

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

error: Drop superfluous #include "qapi/qmp/qerror.h"

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240312141343.3168265-2-armbru@redhat.com>

Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2024-03-09

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2024-03-09

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# =dIAF
# -----END PGP SIGNATURE-----
# gpg: Signature made Sat 09 Mar 2024 15:57:06 GMT
# gpg: using RSA key 7B73BAD68BE7A2C289314B22701B4F6B1A693E59
# gpg: issuer "mjt@tls.msk.ru"
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@corpit.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@debian.org>" [full]
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5
# Subkey fingerprint: 7B73 BAD6 8BE7 A2C2 8931 4B22 701B 4F6B 1A69 3E59

* tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu:
docs/acpi/bits: add some clarity and details while also improving formating
hw/mem/cxl_type3: Fix problem with g_steal_pointer()
hw/pci-bridge/cxl_upstream: Fix problem with g_steal_pointer()
hw/cxl/cxl-cdat: Fix type of buf in ct3_load_cdat()
qerror: QERR_DEVICE_IN_USE is no longer used, drop
blockdev: Fix block_resize error reporting for op blockers
char: Slightly better error reporting when chardev is in use
make-release: switch to .xz format by default
hw/scsi/lsi53c895a: Fix typo in comment
hw/vfio/pci.c: Make some structure static
replay: Improve error messages about configuration conflicts

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

show more ...

char: Slightly better error reporting when chardev is in use

Both

$ qemu-system-x86_64 -chardev null,id=chr0,mux=on -mon chardev=chr0 -mon chardev=chr0 -mon chardev=chr0 -mon chardev=chr0 -mon

char: Slightly better error reporting when chardev is in use

Both

$ qemu-system-x86_64 -chardev null,id=chr0,mux=on -mon chardev=chr0 -mon chardev=chr0 -mon chardev=chr0 -mon chardev=chr0 -mon chardev=chr0

and

$ qemu-system-x86_64 -chardev null,id=chr0 -mon chardev=chr0 -mon chardev=chr0
fail with

qemu-system-x86_64: -mon chardev=chr0: Device 'chr0' is in use

Improve to

qemu-system-x86_64: -mon chardev=chr0: too many uses of multiplexed chardev 'chr0' (maximum is 4)

and

qemu-system-x86_64: -mon chardev=chr0: chardev 'chr0' is already in use

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

show more ...

Merge tag 'pull-testing-updates-120124-2' of https://gitlab.com/stsquad/qemu into staging

testing and misc updates

- add LE microblaze test to avocado
- use modern snapshot=on to avoid trashing

Merge tag 'pull-testing-updates-120124-2' of https://gitlab.com/stsquad/qemu into staging

testing and misc updates

- add LE microblaze test to avocado
- use modern snapshot=on to avoid trashing disk image
- use plain bool for fe_is_open
- various updates to qtest timeouts
- enable meson test timeouts
- tweak the readthedocs environment
- partially revert un-flaking x86_64

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# =ZuDd
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 12 Jan 2024 13:25:27 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44

* tag 'pull-testing-updates-120124-2' of https://gitlab.com/stsquad/qemu: (22 commits)
tests/avocado: partially revert unmasking of replay_linux tests
readthodocs: fully specify a build environment
mtest2make: stop disabling meson test timeouts
tests/fp: Bump fp-test-mulAdd test timeout to 3 minutes
tests/unit: Bump test-crypto-block test timeout to 5 minutes
tests/unit: Bump test-aio-multithread test timeout to 2 minutes
tests/qtest: Bump the device-introspect-test timeout to 12 minutes
qtest: bump bios-table-test timeout to 9 minutes
qtest: bump aspeed_smc-test timeout to 6 minutes
qtest: bump qos-test timeout to 2 minutes
qtest: bump boot-serial-test timeout to 3 minutes
qtest: bump prom-env-test timeout to 6 minutes
qtest: bump pxe-test timeout to 10 minutes
qtest: bump test-hmp timeout to 4 minutes
qtest: bump npcm7xx_pwm-test timeout to 5 minutes
qtest: bump qom-test timeout to 15 minutes
qtest: bump migration-test timeout to 8 minutes
qtest: bump min meson timeout to 60 seconds
chardev: use bool for fe_is_open
gitlab: include microblazeel in testing
...

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

show more ...

chardev: use bool for fe_is_open

The function qemu_chr_fe_init already treats be->fe_open as a bool and
if it acts like a bool it should be one. While we are at it make the
variable name more descri

chardev: use bool for fe_is_open

The function qemu_chr_fe_init already treats be->fe_open as a bool and
if it acts like a bool it should be one. While we are at it make the
variable name more descriptive and add kdoc decorations.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231211145959.93759-1-alex.bennee@linaro.org>

show more ...

Merge remote-tracking branch 'remotes/marcandre/tags/chr-fix-pull-request' into staging

Chardev-related fixes

Hi

Here are some bug fixes worthy for 6.1.

thanks

# gpg: Signature made Thu 05 Aug 2

Merge remote-tracking branch 'remotes/marcandre/tags/chr-fix-pull-request' into staging

Chardev-related fixes

Hi

Here are some bug fixes worthy for 6.1.

thanks

# gpg: Signature made Thu 05 Aug 2021 13:52:03 BST
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# 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/marcandre/tags/chr-fix-pull-request:
chardev: report a simpler error about duplicated id
chardev: give some context on chardev-add error
chardev: fix qemu_chr_open_fd() with fd_in==fd_out
chardev: fix qemu_chr_open_fd() being called with fd=-1
chardev: fix fd_chr_add_watch() when in != out
chardev: mark explicitly first argument as poisoned
chardev/socket: print a more correct command-line address
util: fix abstract socket path copy

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

show more ...

chardev: mark explicitly first argument as poisoned

Since commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 "char: convert
from GIOChannel to QIOChannel", the first argument to the watch callback
can

chardev: mark explicitly first argument as poisoned

Since commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 "char: convert
from GIOChannel to QIOChannel", the first argument to the watch callback
can actually be a QIOChannel, which is not a GIOChannel (but a QEMU
Object).

Even though we never used that pointer, change the callback type to warn
the users. Possibly a better fix later, we may want to store the
callback and call it from intermediary functions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

# gpg: Signature made Mon 13 Jul 2020 09:23:19 BST
# gpg: using RSA key 87A9BD933F87C606D276F62DD

Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

# gpg: Signature made Mon 13 Jul 2020 09:23:19 BST
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# 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/chardev-pull-request:
chardev: Extract system emulation specific code
chardev: Reduce "char-mux.h" scope, rename it "chardev-internal.h"
chardev: Restrict msmouse / wctablet / testdev to system emulation
tests/test-char: Remove unused "chardev/char-mux.h" include
monitor/misc: Remove unused "chardev/char-mux.h" include
char: fix use-after-free with dup chardev & reconnect
chardev: don't abort on attempt to add duplicated chardev
char-socket: initialize reconnect timer only when the timer doesn't start

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

show more ...

chardev: Reduce "char-mux.h" scope, rename it "chardev-internal.h"

No file out of chardev/ requires access to this header,
restrict its scope.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.c

chardev: Reduce "char-mux.h" scope, rename it "chardev-internal.h"

No file out of chardev/ requires access to this header,
restrict its scope.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200423202112.644-5-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

Chardev fixes

# gpg: Signature made Wed 13 Feb 2019 16:18:36 GMT
# gpg: using RSA key DAE8E10975

Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

Chardev fixes

# gpg: Signature made Wed 13 Feb 2019 16:18:36 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/chardev-pull-request: (25 commits)
char-pty: remove write_lock usage
char-pty: remove the check for connection on write
chardev: add a note about frontend sources and context switch
terminal3270: do not use backend timer sources
char: update the mux handlers in class callback
chardev/wctablet: Fix a typo
char: allow specifying a GMainContext at opening time
chardev: ensure termios is fully initialized
tests: expand coverage of socket chardev test
chardev: fix race with client connections in tcp_chr_wait_connected
chardev: disallow TLS/telnet/websocket with tcp_chr_wait_connected
chardev: honour the reconnect setting in tcp_chr_wait_connected
chardev: use a state machine for socket connection state
chardev: split up qmp_chardev_open_socket connection code
chardev: split tcp_chr_wait_connected into two methods
chardev: remove unused 'sioc' variable & cleanup paths
chardev: ensure qemu_chr_parse_compat reports missing driver error
chardev: remove many local variables in qemu_chr_parse_socket
chardev: forbid 'wait' option with client sockets
chardev: forbid 'reconnect' option with server sockets
...

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

show more ...

char: update the mux handlers in class callback

Instead of handling mux chardev in a special way in
qemu_chr_fe_set_handlers(), we may use the chr_update_read_handler
class callback instead.

Signed

char: update the mux handlers in class callback

Instead of handling mux chardev in a special way in
qemu_chr_fe_set_handlers(), we may use the chr_update_read_handler
class callback instead.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190206174328.9736-2-marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

chardev: fix mess in OPENED/CLOSED events when muxed

When chardev is multiplexed (mux=on) there are a lot of cases where
CHR_EVENT_OPENED/CHR_EVENT_CLOSED events pairing (expected from
frontend side

chardev: fix mess in OPENED/CLOSED events when muxed

When chardev is multiplexed (mux=on) there are a lot of cases where
CHR_EVENT_OPENED/CHR_EVENT_CLOSED events pairing (expected from
frontend side) is broken. There are either generation of multiple
repeated or extra CHR_EVENT_OPENED events, or CHR_EVENT_CLOSED just
isn't generated at all.
This is mostly because 'qemu_chr_fe_set_handlers()' function makes its
own (and often wrong) implicit decision on updated frontend state and
invokes 'fd_event' callback with 'CHR_EVENT_OPENED'. And even worse,
it doesn't do symmetric action in opposite direction, as someone may
expect (i.e. it doesn't invoke previously set 'fd_event' with
'CHR_EVENT_CLOSED'). Muxed chardev uses trick by calling this function
again to replace callback handlers with its own ones, but it doesn't
account for such side effect.
Fix that using extended version of this function with added argument
for disabling side effect and keep original function for compatibility
with lots of frontends already using this interface and being
"tolerant" to its side effects.
One more source of event duplication is just line of code in
char-mux.c, which does far more than comment above says (obvious fix).

Signed-off-by: Artem Pisarenko <artem.k.pisarenko@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <7dde6abbd21682857f8294644013173c0b9949b3.1541507990.git.artem.k.pisarenko@gmail.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

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Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

chardev patches

# gpg: Signature made Wed 03 Oct 2018 11:57:34 BST
# gpg: using RSA key DAE8E109

Merge remote-tracking branch 'remotes/elmarco/tags/chardev-pull-request' into staging

chardev patches

# gpg: Signature made Wed 03 Oct 2018 11:57:34 BST
# gpg: using RSA key DAE8E10975969CE5
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>"
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>"
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5

* remotes/elmarco/tags/chardev-pull-request:
chardev: use a child source for qio input source
chardev: mark the calls that allow an implicit mux monitor
char.h: fix gtk-doc comment style
chardev: unref if underlying chardev has no parent
chardev: remove qemu_chr_fe_read_all() counter
chardev: avoid crash if no associated address

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

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chardev: unref if underlying chardev has no parent

It's possible to write code creating a chardev backend that is not
registered. When it is not user-created, it makes sense to keep it
hidden. Let t

chardev: unref if underlying chardev has no parent

It's possible to write code creating a chardev backend that is not
registered. When it is not user-created, it makes sense to keep it
hidden. Let the associated frontend destroy it also in this case.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

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chardev: remove qemu_chr_fe_read_all() counter

There is no obvious reason to have a loop counter. This limits from
reading several megabytes large buffers in one go, since socket
read/write usually

chardev: remove qemu_chr_fe_read_all() counter

There is no obvious reason to have a loop counter. This limits from
reading several megabytes large buffers in one go, since socket
read/write usually have a limit.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

Miscellaenous bugfixes, including crash fixes from Alexey, Peter M. and
Thomas.

# gpg: Signature made Mon 26 Mar 2018 1

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

Miscellaenous bugfixes, including crash fixes from Alexey, Peter M. and
Thomas.

# gpg: Signature made Mon 26 Mar 2018 13:37:38 BST
# gpg: using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# 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:
qemu-pr-helper: Actually allow users to specify pidfile
chardev/char-fe: Allow NULL chardev in qemu_chr_fe_init()
iothread: fix breakage on windows
scsi: turn "is this a SCSI device?" into a conditional hint
chardev-socket: remove useless if
tcg: Really fix cpu_io_recompile
vhost-user-test: add back memfd check
vhost-user-test: do not hang if chardev creation failed
scripts/device-crash-test: Remove fixed isapc-with-iommu entry
hw/audio: Fix crashes when devices are used on ISA bus without DMA
fdc: Exit if ISA controller does not support DMA
hw/net/can: Fix segfaults when using the devices without bus
WHPX improve vcpu_post_run perf
WHPX fix WHvSetPartitionProperty in PropertyCode
WHPX fix WHvGetCapability out WrittenSizeInBytes
scripts/get_maintainer.pl: Print proper error message for missing $file

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

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chardev/char-fe: Allow NULL chardev in qemu_chr_fe_init()

All the functions in char-fe.c handle the CharBackend
having a NULL Chardev pointer, which means that the
backend exists but is not connecte

chardev/char-fe: Allow NULL chardev in qemu_chr_fe_init()

All the functions in char-fe.c handle the CharBackend
having a NULL Chardev pointer, which means that the
backend exists but is not connected to anything. The
exception is qemu_chr_fe_init(), which will crash if
passed a NULL Chardev pointer argument. This can happen
for various boards if they're started with 'nodefaults':
arm-softmmu/qemu-system-arm -S -nodefaults -M cubieboard
riscv32-softmmu/qemu-system-riscv32 -nodefaults -M sifive_e

Make qemu_chr_fe_init() accept a NULL chardev. This allows
UART models to handle NULL chardev properties without
generally needing to special case them or to manually
create a NullChardev.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180323152948.27048-1-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Merge remote-tracking branch 'remotes/ericb/tags/pull-qapi-2018-03-01-v4' into staging

qapi patches for 2018-03-01

- Markus Armbruster: Modularize generated QAPI code

# gpg: Signature made Fri 02

Merge remote-tracking branch 'remotes/ericb/tags/pull-qapi-2018-03-01-v4' into staging

qapi patches for 2018-03-01

- Markus Armbruster: Modularize generated QAPI code

# gpg: Signature made Fri 02 Mar 2018 19:50:16 GMT
# gpg: using RSA key A7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>"
# gpg: aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>"
# gpg: aka "[jpeg image of size 6874]"
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2 F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-qapi-2018-03-01-v4: (30 commits)
qapi: Don't create useless directory qapi-generated
Fix up dangling references to qmp-commands.* in comment and doc
qapi: Move qapi-schema.json to qapi/, rename generated files
docs: Correct outdated information on QAPI
docs/devel/writing-qmp-commands: Update for modular QAPI
qapi: Empty out qapi-schema.json
Include less of the generated modular QAPI headers
qapi: Generate separate .h, .c for each module
watchdog: Consolidate QAPI into single file
qapi/common: Fix guardname() for funny filenames
qapi/types qapi/visit: Generate built-in stuff into separate files
qapi: Make code-generating visitors use QAPIGen more
qapi: Rename generated qmp-marshal.c to qmp-commands.c
qapi: Record 'include' directives in intermediate representation
qapi: Generate in source order
qapi: Record 'include' directives in parse tree
qapi: Concentrate QAPISchemaParser.exprs updates in .__init__()
qapi: Lift error reporting from QAPISchema.__init__() to callers
qapi/common: Eliminate QAPISchema.exprs
qapi: Improve include file name reporting in error messages
...

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

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Include less of the generated modular QAPI headers

In my "build everything" tree, a change to the types in
qapi-schema.json triggers a recompile of about 4800 out of 5100
objects.

The previous comm

Include less of the generated modular QAPI headers

In my "build everything" tree, a change to the types in
qapi-schema.json triggers a recompile of about 4800 out of 5100
objects.

The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h,
qapi-types.h. Each of these headers still includes all its shards.
Reduce compile time by including just the shards we actually need.

To illustrate the benefits: adding a type to qapi/migration.json now
recompiles some 2300 instead of 4800 objects. The next commit will
improve it further.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180211093607.27351-24-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[eblake: rebase to master]
Signed-off-by: Eric Blake <eblake@redhat.com>

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Include qapi/qmp/qerror.h exactly where needed

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180211093607.27351-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

Include qapi/qmp/qerror.h exactly where needed

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180211093607.27351-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

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