Currently when portio_list MemoryRegions are freed using portio_list_destroy() the RCU
thread segfaults generating a backtrace similar to that below:
#0 0x5555599a34b6 in phys_section_destroy ../softmmu/physmem.c:996
#1 0x5555599a37a3 in phys_sections_free ../softmmu/physmem.c:1011
#2 0x5555599b24aa in address_space_dispatch_free ../softmmu/physmem.c:2430
#3 0x55555996a283 in flatview_destroy ../softmmu/memory.c:292
#4 0x55555a2cb9fb in call_rcu_thread ../util/rcu.c:284
#5 0x55555a29b71d in qemu_thread_start ../util/qemu-thread-posix.c:541
#6 0x7ffff4a0cea6 in start_thread nptl/pthread_create.c:477
#7 0x7ffff492ca2e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xfca2e)
The problem here is that portio_list_destroy() unparents the portio_list
MemoryRegions causing them to be freed immediately, however the flatview
still has a reference to the MemoryRegion and so causes a use-after-free
segfault when the RCU thread next updates the flatview.
Solve the lifetime issue by making MemoryRegionPortioList the owner of the
portio_list MemoryRegions, and then reparenting them to the portio_list
owner. This ensures that they can be accessed as QOM children via the
portio_list owner, yet the MemoryRegionPortioList owns the refcount.
Update portio_list_destroy() to unparent the MemoryRegion from the
portio_list owner (while keeping mrpio->mr live until finalization of the
MemoryRegionPortioList), so that the portio_list MemoryRegions remain
allocated until flatview_destroy() removes the final refcount upon the
next flatview update.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The aim of QOMification is so that the lifetime of the MemoryRegionPortioList
structure can be managed using QOM's in-built refcounting instead of having to
handle this manually.
Due to the use of an opaque pointer it isn't possible to model the new
TYPE_MEMORY_REGION_PORTIO_LIST directly using QOM properties, however since
use of the new object is restricted to the portio API we can simply set the
opaque pointer (and the heap-allocated port list) internally.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In order to facilitate a conversion of MemoryRegionPortioList to a QOM object
move the allocation of MemoryRegionPortioList ports to the heap instead of
using a variable-length member at the end of the MemoryRegionPortioList
structure.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230419151652.362717-2-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When the OHCI controller's framenumber is incremented, HccaPad1 register
should be set to zero (Ref OHCI Spec 4.4)
ReactOS uses hccaPad1 to determine if the OHCI hardware is running,
consequently it fails this check in current qemu master.
Signed-off-by: Ryan Wendland <wendland@live.com.au>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1048
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The large comment in the patch says it all; the -no-pie flag is broken and
this is why it was not included in QEMU_LDFLAGS before commit a988b4c561
("build: move remaining compiler flag tests to meson", 2023-05-18). And
some distros made things even worse, so we have to add it to the compiler
command line.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1664
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The bindir variable is not available in the "glib" variable, which is an internal
dependency (created with "declare_dependency"). Use glib_pc instead, which contains
the variable as it is instantiated from glib-2.0.pc.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We want to only enable '-Wno-unused-function' if glib's version is
smaller than '2.57.2' and has a G_DEFINE_AUTOPTR_CLEANUP_FUNC()
implementation that doesn't take into account unused functions. But the
compilation test isn't working as intended as '-Wunused-function' isn't
enabled while running it.
Let's enable it.
Fixes: fc9a809e0d ("build: move glib detection and workarounds to meson")
Signed-off-by: Nicolas Saenz Julienne <nsaenz@amazon.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230524173123.66483-1-nsaenz@amazon.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Based on the kernel commit "b0563468ee x86/CPU/AMD: Disable XSAVES on
AMD family 0x17", host system with EPYC-Rome can clear XSAVES capability
bit. In another words, EPYC-Rome host without XSAVES can occur. Thus, we
need an EPYC-Rome cpu model (without this feature) that matches the
solution of fixing this erratum
Signed-off-by: Maksim Davydov <davydov-max@yandex-team.ru>
Message-Id: <20230524213748.8918-1-davydov-max@yandex-team.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Enable the "bios bits" avocado test in the gitlab-CI
* Another minor fix for the redundancy DMA blocker code
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Merge tag 'pull-request-2023-05-22' of https://gitlab.com/thuth/qemu into staging
* First batch of fixes to allow "make check" with "--without-default-devices"
* Enable the "bios bits" avocado test in the gitlab-CI
* Another minor fix for the redundancy DMA blocker code
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# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
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# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [undefined]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [undefined]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [undefined]
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* tag 'pull-request-2023-05-22' of https://gitlab.com/thuth/qemu:
memory: stricter checks prior to unsetting engaged_in_io
acpi/tests/avocado/bits: enable bios bits avocado tests on gitlab CI pipeline
.gitlab-ci.d/buildtest.yml: Run full "make check" with --without-default-devices
tests/qemu-iotests/172: Run QEMU with -vga none and -nic none
tests/qtest/meson.build: Run the net filter tests only with default devices
tests/qtest: Check for the availability of virtio-ccw devices before using them
tests/qtest/virtio-ccw-test: Remove superfluous tests
tests/qtest/cdrom-test: Fix the test to also work without optional devices
tests/qtest/usb-hcd-uhci-test: Skip test if UHCI controller is not available
tests/qtest/readconfig-test: Check for the availability of USB controllers
hw/sparc64/sun4u: Use MachineClass->default_nic and MachineClass->no_parallel
hw/i386: Ignore the default parallel port if it has not been compiled into QEMU
hw/char/parallel: Move TYPE_ISA_PARALLEL to the header file
hw/sh4: Use MachineClass->default_nic in the sh4 r2d machine
hw/s390x: Use MachineClass->default_nic in the s390x machine
hw/ppc: Use MachineClass->default_nic in the ppc machines
softmmu/vl.c: Disable default NIC if it has not been compiled into the binary
hw: Move the default NIC machine class setting from the x86 to the generic one
softmmu/vl.c: Check for the availability of the VGA device before using it
hw/i386/Kconfig: ISAPC works fine without VGA_ISA
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
- qcow2 spec: Rename "zlib" compression to "deflate"
- Honour graph read lock even in the main thread + prerequisite fixes
- aio-posix: do not nest poll handlers (fixes infinite recursion)
- Refactor QMP blockdev transactions
- graph-lock: Disable locking for now
- iotests/245: Check if 'compress' driver is available
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging
Block layer patches
- qcow2 spec: Rename "zlib" compression to "deflate"
- Honour graph read lock even in the main thread + prerequisite fixes
- aio-posix: do not nest poll handlers (fixes infinite recursion)
- Refactor QMP blockdev transactions
- graph-lock: Disable locking for now
- iotests/245: Check if 'compress' driver is available
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# gpg: Signature made Fri 19 May 2023 10:17:09 AM PDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
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# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (21 commits)
iotests: Test commit with iothreads and ongoing I/O
nbd/server: Fix drained_poll to wake coroutine in right AioContext
graph-lock: Disable locking for now
tested: add test for nested aio_poll() in poll handlers
aio-posix: do not nest poll handlers
iotests/245: Check if 'compress' driver is available
graph-lock: Honour read locks even in the main thread
blockjob: Adhere to rate limit even when reentered early
test-bdrv-drain: Call bdrv_co_unref() in coroutine context
test-bdrv-drain: Take graph lock more selectively
qemu-img: Take graph lock more selectively
qcow2: Unlock the graph in qcow2_do_open() where necessary
block/export: Fix null pointer dereference in error path
block: Call .bdrv_co_create(_opts) unlocked
docs/interop/qcow2.txt: fix description about "zlib" clusters
blockdev: qmp_transaction: drop extra generic layer
blockdev: use state.bitmap in block-dirty-bitmap-add action
blockdev: transaction: refactor handling transaction properties
blockdev: qmp_transaction: refactor loop to classic for
blockdev: transactions: rename some things
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
engaged_in_io could be unset by an MR with re-entrancy checks disabled.
Ensure that only MRs that can set the engaged_in_io flag can unset it.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20230516084002.3813836-1-alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Biosbits avocado tests on gitlab has thus far been disabled because some
packages needed by this test was missing in the container images used by gitlab
CI. These packages have now been added with the commit:
da9000784c ("tests/lcitool: Add mtools and xorriso and remove genisoimage as dependencies")
Therefore, this change enables bits avocado test on gitlab.
At the same time, the bits cleanup code has also been made more robust with
this change.
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-Id: <20230517065357.5614-1-anisinha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
qmp-intro.txt is quite small and provides very little information
that isn't already in the documentation elsewhere. Fold the example
command lines into qemu-options.hx, and delete the now-unneeded plain
text document.
While we're touching the qemu-options.hx documentation text,
wordsmith it a little bit and improve the rST formatting.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230515162245.3964307-4-peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The description text for a parsing error has changed since the
spec doc was first written; update the example in the docs.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230515162245.3964307-3-peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Convert the qmp-spec.txt document to restructuredText.
Notable points about the conversion:
* numbers at the start of section headings are removed, to match
the style of the rest of the manual
* cross-references to other sections or documents are hyperlinked
* various formatting tweaks (notably the examples, which need the
-> and <- prefixed so the QMP code-block lexer will accept them)
* English prose fixed in a few places
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230515162245.3964307-2-peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[.. code-block:: dumbed down to :: to work around CI failure]
The error message is bad when the section is untagged. For instance,
test case doc-interleaved-section produces "'@foobar:' can't follow
'Note' section", which is okay, but if we drop the "Note:" tag, we get
"'@foobar:' can't follow 'None' section, which is bad.
Change the error message to "description of '@foobar:' follows a
section".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230510141637.3685080-1-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
[Conflict with commit 3e32dca3f0 resolved]
Thanks to the fixes from the previous patches, we can now run
the full set of "make check" with all targets here.
Message-Id: <20230512124033.502654-19-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This way QEMU won't complain in case the VGA card or the NIC device
are not available in the binary, thus it won't spoil the output
and the test then passes with such QEMU binaries that have a limited
configuration, too.
Message-Id: <20230512124033.502654-18-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
These tests rely on a default NIC to be available. Skip them if we
used the "--without-default-devices" configure option.
Message-Id: <20230512124033.502654-17-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The devices might not have been compiled into the QEMU binary, so we
have to check before we can use them.
Message-Id: <20230512124033.502654-16-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
virtio-balloon-ccw is already tested in the device-plug-test,
virtio-blk-ccw is already tested in cdrom-test, and virtio-net-ccw
is already tested in the pxe-test, so there is not much point
in doing "nop" tests here again.
Message-Id: <20230512124033.502654-15-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
It's possible to disable virtio-scsi and virtio-blk in the binaries,
so we must not run the corresponding tests if these devices are missing.
Message-Id: <20230512124033.502654-14-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The test is already fenced with CONFIG_USB_UHCI in meson.build, but in
case we build the ppc or mips targets in parallel, this config switch
is still set in "config_all_devices" and thus the test is still run.
Thus we need an explicit additional check here before adding the tests
to the test plan.
Message-Id: <20230512124033.502654-13-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The USB controllers might not be available in the QEMU binary
(e.g. when using the "--without-default-devices" configure switch),
so we have to check whether the devices can be used before running
the related test.
Message-Id: <20230512124033.502654-12-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Announce the default NIC via MachineClass->default_nic and set up
MachineClass->no_parallel according to the availability of the
"isa-parallel" device, so that the Sun machines also work when
QEMU has been configured with "--without-default-devices".
Message-Id: <20230512124033.502654-11-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Don't try to instantiate the parallel port if it has not been
enabled in the build configuration.
Message-Id: <20230512124033.502654-10-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We are going to require the macro from other files, too, so move
this #define to the header file.
Message-Id: <20230512124033.502654-9-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Mark the default NIC via the new MachineClass->default_nic setting
so that the machine-defaults code in vl.c can decide whether the
default NIC is usable or not (for example when compiling with the
"--without-default-devices" configure switch).
Message-Id: <20230512124033.502654-8-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Mark the default NIC via the new MachineClass->default_nic setting
so that the machine-defaults code in vl.c can decide whether the
default NIC is usable or not (for example when compiling with the
"--without-default-devices" configure switch).
Message-Id: <20230512124033.502654-7-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Mark the default NIC via the new MachineClass->default_nic setting
so that the machine-defaults code in vl.c can decide whether the
default NIC is usable or not (for example when compiling with the
"--without-default-devices" configure switch).
Message-Id: <20230512124033.502654-6-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Don't try to instantiate a default NIC if it is not available (since
this will cause QEMU to abort). Emit a warning instead.
Message-Id: <20230512124033.502654-5-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We are going to re-use this setting for other targets, so let's
move this to the main MachineClass.
Message-Id: <20230512124033.502654-4-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
In case the user disabled the default VGA device in the binary (e.g.
with the "--without-default-devices" configure switch), we should
not try to use it by default if QEMU is running with the default
devices, otherwise it aborts when trying to use it. Simply emit a
warning instead.
Message-Id: <20230512124033.502654-3-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The "isapc" machine can also be run without VGA card, so there
is no need for a hard requirement with a "select" here - "imply"
is enough.
Message-Id: <20230512124033.502654-2-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
CXL volatile memory support
More memslots for vhost-user on x86 and ARM.
vIOMMU support for vhost-vdpa
pcie-to-pci bridge can now be compiled out
MADT revision bumped to 3
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
virtio,pc,pci: fixes, features, cleanups
CXL volatile memory support
More memslots for vhost-user on x86 and ARM.
vIOMMU support for vhost-vdpa
pcie-to-pci bridge can now be compiled out
MADT revision bumped to 3
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Signature made Fri 19 May 2023 07:36:26 AM PDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
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# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (40 commits)
hw/i386/pc: No need for rtc_state to be an out-parameter
hw/i386/pc: Create RTC controllers in south bridges
hw/cxl: Introduce cxl_device_get_timestamp() utility function
hw/cxl: rename mailbox return code type from ret_code to CXLRetCode
hw/pci-bridge: make building pcie-to-pci bridge configurable
virtio-pci: add handling of PCI ATS and Device-TLB enable/disable
hw/pci-host/pam: Make init_pam() usage more readable
hw/i386/pc: Initialize ram_memory variable directly
hw/i386/pc_{q35,piix}: Minimize usage of get_system_memory()
hw/i386/pc_{q35,piix}: Reuse MachineClass::desc as SMB product name
hw/i386/pc_q35: Reuse machine parameter
hw/pci-host/q35: Inline sysbus_add_io()
hw/pci-host/i440fx: Inline sysbus_add_io()
vhost-vdpa: Add support for vIOMMU.
vhost-vdpa: Add check for full 64-bit in region delete
vhost_vdpa: fix the input in trace_vhost_vdpa_listener_region_del()
vhost: expose function vhost_dev_has_iommu()
virtio-crypto: fix NULL pointer dereference in virtio_crypto_free_request
virtio-net: not enable vq reset feature unconditionally
vhost-user: Remove acpi-specific memslot limit
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
When running on the Kubernetes runner, this CI job is timing out.
Raise the limit to give the job enough time to run.
Signed-off-by: Camilla Conte <cconte@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230407145252.32955-2-cconte@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Configure Gitlab CI to run on Kubernetes
according to the official documentation.
https://docs.gitlab.com/ee/ci/docker/using_docker_build.html#docker-in-docker-with-tls-enabled-in-kubernetes
These changes are needed because of the CI jobs
using Docker-in-Docker (dind).
As soon as Docker-in-Docker is replaced with Kaniko,
these changes can be reverted.
I documented what I did to set up the Kubernetes runner on the wiki:
https://wiki.qemu.org/Testing/CI/KubernetesRunners
Signed-off-by: Camilla Conte <cconte@redhat.com>
Message-Id: <20230407145252.32955-1-cconte@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Some scripts are invoked via the first "python3" binary in the PATH,
because they are executable and their shebang line is "#! /usr/bin/env
python3". To enforce usage of $(PYTHON), make them nonexecutable.
Scripts invoked via meson need nothing else, and meson-buildoptions.py
is already using $(PYTHON). For probe-gdb-support.py however the
invocation in the configure script has to be adjusted.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Since custom runners are not generally available, make it possible to
debug the differences between a successful and a failing build by
comparing the logs and the build.ninja rules.
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If sphinx is present but the theme is not, mkvenv will print an
inaccurate diagnostic:
ERROR: Could not find a version that satisfies the requirement sphinx-rtd-theme>=0.5.0 (from versions: none)
ERROR: No matching distribution found for sphinx-rtd-theme>=0.5.0
'sphinx>=1.6.0' not found:
• Python package 'sphinx' version '5.3.0' was found, but isn't suitable.
• mkvenv was configured to operate offline and did not check PyPI.
Instead, ignore the packages that were found to be present, and report
an error based on the first absent package.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reintroduce the cmd_line.txt mangling to remove the sphinx_build option
when rerunning meson. The mechanism was removed in commit 75cc286485
("configure: remove backwards-compatibility code", 2023-01-11) because
the fixups were obsolete at the time; however, the Meson deprecation
mechanism doesn't quite work when options are finally removed, so we
need to bring it back.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Do not use the rule in build.ninja, because the path to meson is hardcoded
in build.ninja and this breaks if meson moves (for example if the distro
meson suddenly becomes too old after an update).
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
importlib.metadata is just as good as distlib.database and a bit more
battle-proven for "egg" based distributions, and in fact that is exactly
why mkvenv.py is not using distlib.database to find entry points: it
simply does not work for eggs.
The only disadvantage of importlib.metadata is that it is not available
by default before Python 3.8, so we need a fallback to pkg_resources
(again, just like for the case of finding entry points). Do so to
fix issues where incorrect egg metadata results in a JSONDecodeError.
While at it, reuse the new _get_version function to diagnose an incorrect
version of the package even if importlib.metadata is not available.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This tests exercises graph locking, draining, and graph modifications
with AioContext switches a lot. Amongst others, it serves as a
regression test for bdrv_graph_wrlock() deadlocking because it is called
with a locked AioContext and for AioContext handling in the NBD server.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230517152834.277483-4-kwolf@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
nbd_drained_poll() generally runs in the main thread, not whatever
iothread the NBD server coroutine is meant to run in, so it can't
directly reenter the coroutines to wake them up.
The code seems to have the right intention, it specifies the correct
AioContext when it calls qemu_aio_coroutine_enter(). However, this
functions doesn't schedule the coroutine to run in that AioContext, but
it assumes it is already called in the home thread of the AioContext.
To fix this, add a new thread-safe qio_channel_wake_read() that can be
called in the main thread to wake up the coroutine in its AioContext,
and use this in nbd_drained_poll().
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230517152834.277483-3-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
