Alexander Graf [Mon, 3 Apr 2023 22:14:21 +0000 (22:14 +0000)]
hostmem-file: add offset option
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
inside the same target file, such as a device node.
In particular, it's useful to map guest memory directly into /dev/mem
for experimentation.
To make this work consistently, also fix up all places in QEMU that
expect fd offsets to be 0.
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20230403221421.60877-1-graf@amazon.com> Acked-by: Markus Armbruster <armbru@redhat.com> Acked-by: Peter Xu <peterx@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
Merge tag 'pull-qapi-2023-05-17-v2' of https://repo.or.cz/qemu/armbru into staging
QAPI patches patches for 2023-05-17
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# gpg: Signature made Mon 22 May 2023 04:11:04 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-qapi-2023-05-17-v2' of https://repo.or.cz/qemu/armbru:
docs/interop: Delete qmp-intro.txt
docs/interop/qmp-spec: Update error description for parsing errors
docs/interop: Convert qmp-spec.txt to rST
qapi: Improve error message for description following section
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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: Signature made Mon 22 May 2023 04:46:34 AM PDT
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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]
# gpg: WARNING: This key is not certified with a trusted signature!
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# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* 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>
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
# gpg: issuer "kwolf@redhat.com"
# 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>
memory: stricter checks prior to unsetting engaged_in_io
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>
Ani Sinha [Wed, 17 May 2023 06:53:57 +0000 (12:23 +0530)]
acpi/tests/avocado/bits: enable bios bits avocado tests on gitlab CI pipeline
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:
da9000784c90d ("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>
Peter Maydell [Mon, 15 May 2023 16:22:45 +0000 (17:22 +0100)]
docs/interop: Delete qmp-intro.txt
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>
Peter Maydell [Mon, 15 May 2023 16:22:44 +0000 (17:22 +0100)]
docs/interop/qmp-spec: Update error description for parsing errors
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>
Peter Maydell [Mon, 15 May 2023 16:22:43 +0000 (17:22 +0100)]
docs/interop: Convert qmp-spec.txt to rST
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]
qapi: Improve error message for description following section
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 3e32dca3f0d resolved]
Thomas Huth [Fri, 12 May 2023 07:49:37 +0000 (09:49 +0200)]
tests/qemu-iotests/172: Run QEMU with -vga none and -nic none
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>
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>
Thomas Huth [Thu, 11 May 2023 11:59:00 +0000 (13:59 +0200)]
tests/qtest/usb-hcd-uhci-test: Skip test if UHCI controller is not available
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>
Thomas Huth [Thu, 11 May 2023 11:33:08 +0000 (13:33 +0200)]
tests/qtest/readconfig-test: Check for the availability of USB controllers
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>
Thomas Huth [Thu, 11 May 2023 16:14:37 +0000 (18:14 +0200)]
hw/sparc64/sun4u: Use MachineClass->default_nic and MachineClass->no_parallel
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>
Thomas Huth [Thu, 11 May 2023 16:30:21 +0000 (18:30 +0200)]
hw/sh4: Use MachineClass->default_nic in the sh4 r2d machine
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>
Thomas Huth [Thu, 11 May 2023 12:50:36 +0000 (14:50 +0200)]
hw/s390x: Use MachineClass->default_nic in the s390x machine
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>
Thomas Huth [Fri, 12 May 2023 12:40:20 +0000 (14:40 +0200)]
hw/ppc: Use MachineClass->default_nic in the ppc machines
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>
Thomas Huth [Wed, 10 May 2023 16:54:33 +0000 (18:54 +0200)]
softmmu/vl.c: Check for the availability of the VGA device before using it
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>
Merge tag 'for-upstream-urgent' of https://gitlab.com/bonzini/qemu into staging
Fixes for Python venv changes
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# gpg: Signature made Fri 19 May 2023 02:38:06 PM PDT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [undefined]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [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: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream-urgent' of https://gitlab.com/bonzini/qemu:
scripts: make sure scripts are invoked via $(PYTHON)
gitlab: custom-runners: preserve more artifacts for debugging
mkvenv: pass first missing package to diagnose()
configure: fix backwards-compatibility for meson sphinx_build option
build: rebuild build.ninja using "meson setup --reconfigure"
mkvenv: replace distlib.database with importlib.metadata/pkg_resources
remove remaining traces of meson submodule
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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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# 4oyMsVMaAcQ+dnEQigRJodf/MpFfs9DfNZAH55VwwQWsNT0t0ueD0xigR203jjaE
# mJJJipAqetFax2JjC7QMXWf+LR36BnL/0/xH+x/BWb0FI42wr0I=
# =ajmR
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 19 May 2023 07:36:26 AM PDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [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: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* 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>
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>
Paolo Bonzini [Thu, 18 May 2023 09:27:39 +0000 (11:27 +0200)]
scripts: make sure scripts are invoked via $(PYTHON)
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>
Paolo Bonzini [Thu, 18 May 2023 06:51:52 +0000 (08:51 +0200)]
gitlab: custom-runners: preserve more artifacts for debugging
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>
Paolo Bonzini [Fri, 19 May 2023 08:18:07 +0000 (10:18 +0200)]
mkvenv: pass first missing package to diagnose()
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>
Paolo Bonzini [Fri, 19 May 2023 18:04:07 +0000 (20:04 +0200)]
configure: fix backwards-compatibility for meson sphinx_build option
Reintroduce the cmd_line.txt mangling to remove the sphinx_build option
when rerunning meson. The mechanism was removed in commit 75cc28648574
("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>
Paolo Bonzini [Fri, 19 May 2023 17:32:56 +0000 (19:32 +0200)]
build: rebuild build.ninja using "meson setup --reconfigure"
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>
Paolo Bonzini [Fri, 19 May 2023 08:06:19 +0000 (10:06 +0200)]
mkvenv: replace distlib.database with importlib.metadata/pkg_resources
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>
Kevin Wolf [Wed, 17 May 2023 15:28:34 +0000 (17:28 +0200)]
iotests: Test commit with iothreads and ongoing I/O
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>
Kevin Wolf [Wed, 17 May 2023 15:28:33 +0000 (17:28 +0200)]
nbd/server: Fix drained_poll to wake coroutine in right AioContext
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>
Kevin Wolf [Wed, 17 May 2023 15:28:32 +0000 (17:28 +0200)]
graph-lock: Disable locking for now
In QEMU 8.0, we've been seeing deadlocks in bdrv_graph_wrlock(). They
come from callers that hold an AioContext lock, which is not allowed
during polling. In theory, we could temporarily release the lock, but
callers are inconsistent about whether they hold a lock, and if they do,
some are also confused about which one they hold. While all of this is
fixable, it's not trivial, and the best course of action for 8.0.1 is
probably just disabling the graph locking code temporarily.
We don't currently rely on graph locking yet. It is supposed to replace
the AioContext lock eventually to enable multiqueue support, but as long
as we still have the AioContext lock, it is sufficient without the graph
lock. Once the AioContext lock goes away, the deadlock doesn't exist any
more either and this commit can be reverted. (Of course, it can also be
reverted while the AioContext lock still exists if the callers have been
fixed.)
Cc: qemu-stable@nongnu.org Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230517152834.277483-2-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Stefan Hajnoczi [Tue, 2 May 2023 18:41:34 +0000 (14:41 -0400)]
tested: add test for nested aio_poll() in poll handlers
Cc: qemu-stable@nongnu.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230502184134.534703-3-stefanha@redhat.com>
[kwolf: Restrict to CONFIG_POSIX, Windows doesn't support polling] Tested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Stefan Hajnoczi [Tue, 2 May 2023 18:41:33 +0000 (14:41 -0400)]
aio-posix: do not nest poll handlers
QEMU's event loop supports nesting, which means that event handler
functions may themselves call aio_poll(). The condition that triggered a
handler must be reset before the nested aio_poll() call, otherwise the
same handler will be called and immediately re-enter aio_poll. This
leads to an infinite loop and stack exhaustion.
Poll handlers are especially prone to this issue, because they typically
reset their condition by finishing the processing of pending work.
Unfortunately it is during the processing of pending work that nested
aio_poll() calls typically occur and the condition has not yet been
reset.
Disable a poll handler during ->io_poll_ready() so that a nested
aio_poll() call cannot invoke ->io_poll_ready() again. As a result, the
disabled poll handler and its associated fd handler do not run during
the nested aio_poll(). Calling aio_set_fd_handler() from inside nested
aio_poll() could cause it to run again. If the fd handler is pending
inside nested aio_poll(), then it will also run again.
In theory fd handlers can be affected by the same issue, but they are
more likely to reset the condition before calling nested aio_poll().
This is a special case and it's somewhat complex, but I don't see a way
around it as long as nested aio_poll() is supported.
Cc: qemu-stable@nongnu.org Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2186181 Fixes: c38270692593 ("block: Mark bdrv_co_io_(un)plug() and callers GRAPH_RDLOCK") Cc: Kevin Wolf <kwolf@redhat.com> Cc: Emanuele Giuseppe Esposito <eesposit@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230502184134.534703-2-stefanha@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Thu, 11 May 2023 14:38:01 +0000 (16:38 +0200)]
iotests/245: Check if 'compress' driver is available
Skip TestBlockdevReopen.test_insert_compress_filter() if the 'compress'
driver isn't available.
In order to make the test succeed when the case is skipped, we also need
to remove any output from it (which would be missing in the case where
we skip it). This is done by replacing qemu_io_log() with qemu_io(). In
case of failure, qemu_io() raises an exception with the output of the
qemu-io binary in its message, so we don't actually lose anything.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230511143801.255021-1-kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:36:01 +0000 (22:36 +0200)]
graph-lock: Honour read locks even in the main thread
There are some conditions under which we don't actually need to do
anything for taking a reader lock: Writing the graph is only possible
from the main context while holding the BQL. So if a reader is running
in the main context under the BQL and knows that it won't be interrupted
until the next writer runs, we don't actually need to do anything.
This is the case if the reader code neither has a nested event loop
(this is forbidden anyway while you hold the lock) nor is a coroutine
(because a writer could run when the coroutine has yielded).
These conditions are exactly what bdrv_graph_rdlock_main_loop() asserts.
They are not fulfilled in bdrv_graph_co_rdlock(), which always runs in a
coroutine.
This deletes the shortcuts in bdrv_graph_co_rdlock() that skip taking
the reader lock in the main thread.
Reported-by: Fiona Ebner <f.ebner@proxmox.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-9-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:36:00 +0000 (22:36 +0200)]
blockjob: Adhere to rate limit even when reentered early
When jobs are sleeping, for example to enforce a given rate limit, they
can be reentered early, in particular in order to get paused, to update
the rate limit or to get cancelled.
Before this patch, they behave in this case as if they had fully
completed their rate limiting delay. This means that requests are sped
up beyond their limit, violating the constraints that the user gave us.
Change the block jobs to sleep in a loop until the necessary delay is
completed, while still allowing cancelling them immediately as well
pausing (handled by the pause point in job_sleep_ns()) and updating the
rate limit.
This change is also motivated by iotests cases being prone to fail
because drain operations pause and unpause them so often that block jobs
complete earlier than they are supposed to. In particular, the next
commit would fail iotests 030 without this change.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-8-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:59 +0000 (22:35 +0200)]
test-bdrv-drain: Call bdrv_co_unref() in coroutine context
bdrv_unref() is a no_coroutine_fn, so calling it from coroutine context
is invalid. Use bdrv_co_unref() instead.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-7-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:58 +0000 (22:35 +0200)]
test-bdrv-drain: Take graph lock more selectively
If we take a reader lock, we can't call any functions that take a writer
lock internally without causing deadlocks once the reader lock is
actually enforced in the main thread, too. Take the reader lock only
where it is actually needed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-6-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:57 +0000 (22:35 +0200)]
qemu-img: Take graph lock more selectively
If we take a reader lock, we can't call any functions that take a writer
lock internally without causing deadlocks once the reader lock is
actually enforced in the main thread, too. Take the reader lock only
where it is actually needed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-5-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:56 +0000 (22:35 +0200)]
qcow2: Unlock the graph in qcow2_do_open() where necessary
qcow2_do_open() calls a few no_co_wrappers that wrap functions taking
the graph lock internally as a writer. Therefore, it can't hold the
reader lock across these calls, it causes deadlocks. Drop the lock
temporarily around the calls.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-4-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:55 +0000 (22:35 +0200)]
block/export: Fix null pointer dereference in error path
There are some error paths in blk_exp_add() that jump to 'fail:' before
'exp' is even created. So we can't just unconditionally access exp->blk.
Add a NULL check, and switch from exp->blk to blk, which is available
earlier, just to be extra sure that we really cover all cases where
BlockDevOps could have been set for it (in practice, this only happens
in drv->create() today, so this part of the change isn't strictly
necessary).
Fixes: Coverity CID 1509238 Fixes: de79b52604e43fdeba6cee4f5af600b62169f2d2 Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-3-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Kevin Wolf [Wed, 10 May 2023 20:35:54 +0000 (22:35 +0200)]
block: Call .bdrv_co_create(_opts) unlocked
These are functions that modify the graph, so they must be able to take
a writer lock. This is impossible if they already hold the reader lock.
If they need a reader lock for some of their operations, they should
take it internally.
Many of them go through blk_*(), which will always take the lock itself.
Direct calls of bdrv_*() need to take the reader lock. Note that while
locking for bdrv_co_*() calls is checked by TSA, this is not the case
for the mixed_coroutine_fns bdrv_*(). Holding the lock is still required
when they are called from coroutine context like here!
This effectively reverts 4ec8df0183, but adds some internal locking
instead.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510203601.418015-2-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Akihiro Suda [Tue, 16 May 2023 14:32:27 +0000 (23:32 +0900)]
docs/interop/qcow2.txt: fix description about "zlib" clusters
"zlib" clusters are actually raw deflate (RFC1951) clusters without
zlib headers.
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
Message-Id: <168424874322.11954.1340942046351859521-0@git.sr.ht> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: qmp_transaction: drop extra generic layer
Let's simplify things:
First, actions generally don't need access to common BlkActionState
structure. The only exclusion are backup actions that need
block_job_txn.
Next, for transaction actions of Transaction API is more native to
allocated state structure in the action itself.
So, do the following transformation:
1. Let all actions be represented by a function with corresponding
structure as arguments.
2. Instead of array-map marshaller, let's make a function, that calls
corresponding action directly.
3. BlkActionOps and BlkActionState structures become unused
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230510150624.310640-7-vsementsov@yandex-team.ru> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: use state.bitmap in block-dirty-bitmap-add action
Other bitmap related actions use the .bitmap pointer in .abort action,
let's do same here:
1. It helps further refactoring, as bitmap-add is the only bitmap
action that uses state.action in .abort
2. It must be safe: transaction actions rely on the fact that on
.abort() the state is the same as at the end of .prepare(), so that
in .abort() we could precisely rollback the changes done by
.prepare().
The only way to remove the bitmap during transaction should be
block-dirty-bitmap-remove action, but it postpones actual removal to
.commit(), so we are OK on any rollback path. (Note also that
bitmap-remove is the only bitmap action that has .commit() phase,
except for simple g_free the state on .clean())
3. Again, other bitmap actions behave this way: keep the bitmap pointer
during the transaction.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230510150624.310640-6-vsementsov@yandex-team.ru>
[kwolf: Also remove the now unused BlockDirtyBitmapState.prepared] Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Only backup supports GROUPED mode. Make this logic more clear. And
avoid passing extra thing to each action.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230510150624.310640-5-vsementsov@yandex-team.ru> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: qmp_transaction: refactor loop to classic for
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510150624.310640-4-vsementsov@yandex-team.ru> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Look at qmp_transaction(): dev_list is not obvious name for list of
actions. Let's look at qapi spec, this argument is "actions". Let's
follow the common practice of using same argument names in qapi scheme
and code.
To be honest, rename props to properties for same reason.
Next, we have to rename global map of actions, to not conflict with new
name for function argument.
Rename also dev_entry loop variable accordingly to new name of the
list.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510150624.310640-3-vsementsov@yandex-team.ru> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
blockdev: refactor transaction to use Transaction API
We are going to add more block-graph modifying transaction actions,
and block-graph modifying functions are already based on Transaction
API.
Next, we'll need to separately update permissions after several
graph-modifying actions, and this would be simple with help of
Transaction API.
So, now let's just transform what we have into new-style transaction
actions.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230510150624.310640-2-vsementsov@yandex-team.ru> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Peter Maydell [Fri, 19 May 2023 14:58:08 +0000 (15:58 +0100)]
Revert "arm/kvm: add support for MTE"
This reverts commit b320e21c48ce64853904bea6631c0158cc2ef227,
which accidentally broke TCG, because it made the TCG -cpu max
report the presence of MTE to the guest even if the board hadn't
enabled MTE by wiring up the tag RAM. This meant that if the guest
then tried to use MTE QEMU would segfault accessing the
non-existent tag RAM:
==346473==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address (pc 0x55f328952a4a bp 0x00000213a400 sp 0x7f7871859b80 T346476)
==346473==The signal is caused by a READ memory access.
==346473==Hint: this fault was caused by a dereference of a high value address (see register values below). Disassemble the provided pc to learn which register was used.
#0 0x55f328952a4a in address_space_to_flatview /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/memory.h:1108:12
#1 0x55f328952a4a in address_space_translate /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/memory.h:2797:31
#2 0x55f328952a4a in allocation_tag_mem /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/../../target/arm/tcg/mte_helper.c:176:10
#3 0x55f32895366c in helper_stgm /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/../../target/arm/tcg/mte_helper.c:461:15
#4 0x7f782431a293 (<unknown module>)
It's also not clear that the KVM logic is correct either:
MTE defaults to on there, rather than being only on if the
board wants it on.
Revert the whole commit for now so we can sort out the issues.
(We didn't catch this in CI because we have no test cases in
avocado that use guests with MTE support.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230519145808.348701-1-peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Bernhard Beschow [Fri, 19 May 2023 08:47:34 +0000 (10:47 +0200)]
hw/i386/pc: No need for rtc_state to be an out-parameter
Now that the RTC is created as part of the southbridges it doesn't need
to be an out-parameter any longer.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230519084734.220480-3-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Fri, 19 May 2023 08:47:33 +0000 (10:47 +0200)]
hw/i386/pc: Create RTC controllers in south bridges
Just like in the real hardware (and in PIIX4), create the RTC
controllers in the south bridges.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230519084734.220480-2-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Ira Weiny [Sun, 23 Apr 2023 16:20:09 +0000 (17:20 +0100)]
hw/cxl: Introduce cxl_device_get_timestamp() utility function
There are new users of this functionality coming shortly so factor
it out from the GET_TIMESTAMP mailbox command handling.
Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230423162013.4535-3-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Sun, 23 Apr 2023 16:20:08 +0000 (17:20 +0100)]
hw/cxl: rename mailbox return code type from ret_code to CXLRetCode
Given the increasing usage of this mailbox return code type, now
is a good time to switch to QEMU style naming.
Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230423162013.4535-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Sebastian Ott [Mon, 15 May 2023 14:28:46 +0000 (16:28 +0200)]
hw/pci-bridge: make building pcie-to-pci bridge configurable
Introduce a CONFIG option to build the pcie-to-pci bridge. No
functional change since it's enabled per default for PCIE_PORT=y.
Signed-off-by: Sebastian Ott <sebott@redhat.com>
Message-Id: <72b6599d-6b27-00b5-aac5-2ebc16a2e023@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Viktor Prutyanov [Fri, 12 May 2023 13:51:20 +0000 (16:51 +0300)]
virtio-pci: add handling of PCI ATS and Device-TLB enable/disable
According to PCIe Address Translation Services specification 5.1.3.,
ATS Control Register has Enable bit to enable/disable ATS. Guest may
enable/disable PCI ATS and, accordingly, Device-TLB for the VirtIO PCI
device. So, raise/lower a flag and call a trigger function to pass this
event to a device implementation.
Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
Message-Id: <20230512135122.70403-2-viktor@daynix.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Mon, 13 Feb 2023 16:20:02 +0000 (17:20 +0100)]
hw/pci-host/pam: Make init_pam() usage more readable
Unlike pam_update() which takes the subject -- PAMMemoryRegion -- as
first argument, init_pam() takes it as fifth (!) argument. This makes it
quite hard to figure out what an init_pam() invocation actually
initializes. By moving the subject to the front this should become
clearer.
While at it, lower the DeviceState parameter to Object, also
communicating more clearly that this parameter is just the owner rather
than some (heavy?) dependency.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230213162004.2797-8-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Going through pc_memory_init() seems quite complicated for a simple
assignment.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230213162004.2797-7-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Mon, 13 Feb 2023 16:20:00 +0000 (17:20 +0100)]
hw/i386/pc_{q35,piix}: Minimize usage of get_system_memory()
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-6-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Mon, 13 Feb 2023 16:19:59 +0000 (17:19 +0100)]
hw/i386/pc_{q35,piix}: Reuse MachineClass::desc as SMB product name
No need to repeat the descriptions.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-5-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Mon, 13 Feb 2023 16:19:58 +0000 (17:19 +0100)]
hw/i386/pc_q35: Reuse machine parameter
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-4-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Bernhard Beschow [Mon, 13 Feb 2023 16:19:57 +0000 (17:19 +0100)]
hw/pci-host/q35: Inline sysbus_add_io()
sysbus_add_io() just wraps memory_region_add_subregion() while also
obscuring where the memory is attached. So use
memory_region_add_subregion() directly and attach it to the existing
memory region s->mch.address_space_io which is set as an alias to
get_system_io() by the q35 machine.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-3-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Bernhard Beschow [Mon, 13 Feb 2023 16:19:56 +0000 (17:19 +0100)]
hw/pci-host/i440fx: Inline sysbus_add_io()
sysbus_add_io() just wraps memory_region_add_subregion() while also
obscuring where the memory is attached. So use
memory_region_add_subregion() directly and attach it to the existing
memory region s->bus->address_space_io which is set as an alias to
get_system_io() by the pc machine.
Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-2-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Cindy Lu [Wed, 10 May 2023 05:46:31 +0000 (13:46 +0800)]
vhost-vdpa: Add support for vIOMMU.
1. The vIOMMU support will make vDPA can work in IOMMU mode. This
will fix security issues while using the no-IOMMU mode.
To support this feature we need to add new functions for IOMMU MR adds and
deletes.
Also since the SVQ does not support vIOMMU yet, add the check for IOMMU
in vhost_vdpa_dev_start, if the SVQ and IOMMU enable at the same time
the function will return fail.
2. Skip the iova_max check vhost_vdpa_listener_skipped_section(). While
MR is IOMMU, move this check to vhost_vdpa_iommu_map_notify()
Verified in vp_vdpa and vdpa_sim_net driver
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-5-lulu@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cindy Lu [Wed, 10 May 2023 05:46:30 +0000 (13:46 +0800)]
vhost-vdpa: Add check for full 64-bit in region delete
The unmap ioctl doesn't accept a full 64-bit span. So need to
add check for the section's size in vhost_vdpa_listener_region_del().
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-4-lulu@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cindy Lu [Wed, 10 May 2023 05:46:29 +0000 (13:46 +0800)]
vhost_vdpa: fix the input in trace_vhost_vdpa_listener_region_del()
In trace_vhost_vdpa_listener_region_del, the value for llend
should change to int128_get64(int128_sub(llend, int128_one()))
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-3-lulu@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cindy Lu [Wed, 10 May 2023 05:46:28 +0000 (13:46 +0800)]
vhost: expose function vhost_dev_has_iommu()
To support vIOMMU in vdpa, need to exposed the function
vhost_dev_has_iommu, vdpa will use this function to check
if vIOMMU enable.
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-2-lulu@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Eugenio Pérez [Thu, 4 May 2023 10:14:47 +0000 (12:14 +0200)]
virtio-net: not enable vq reset feature unconditionally
The commit 93a97dc5200a ("virtio-net: enable vq reset feature") enables
unconditionally vq reset feature as long as the device is emulated.
This makes impossible to actually disable the feature, and it causes
migration problems from qemu version previous than 7.2.
The entire final commit is unneeded as device system already enable or
disable the feature properly.
This reverts commit 93a97dc5200a95e63b99cb625f20b7ae802ba413. Fixes: 93a97dc5200a ("virtio-net: enable vq reset feature") Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230504101447.389398-1-eperezma@redhat.com> Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Let's just support 512 memslots on x86-64 and aarch64 as well. The maximum
number of ACPI slots (256) is no longer completely expressive ever since
we supported virtio-based memory devices. Further, we're completely
ignoring other memslots used outside of memory device context, such as
memslots used for boot memory.
Note that the vhost memslot limit in the kernel is usually configured to
be 509. With this change, we prepare vhost-user on the QEMU side to be
closer to that limit, to eventually support ~512 memslots in most vhost
implementations and have less "surprises" when cold/hotplugging vhost
devices while also consuming more memslots than we're currently used to
by memory devices (e.g., once virtio-mem starts using multiple memslots).
Note that most vhost-user implementations only support a small number of
memslots so far, which we can hopefully improve in the near future.
We'll leave the PPC special-case as is for now.
Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230503184144.808478-1-david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
virtio-mem: Default to "unplugged-inaccessible=on" with 8.1 on x86-64
Allowing guests to read unplugged memory simplified the bring-up of
virtio-mem in Linux guests -- which was limited to x86-64 only. On arm64
(which was added later), we never had legacy guests and don't even allow
to configure it, essentially always having "unplugged-inaccessible=on".
At this point, all guests we care about
should be supporting VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE, so let's
change the default for the 8.1 machine.
This change implies that also memory that supports the shared zeropage
(private anonymous memory) will now require
VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE in the driver in order to be usable by
the guest -- as default, one can still manually set the
unplugged-inaccessible property.
Disallowing the guest to read unplugged memory will be important for
some future features, such as memslot optimizations or protection of
unplugged memory, whereby we'll actually no longer allow the guest to
even read from unplugged memory.
At some point, we might want to deprecate and remove that property.
Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Eduardo Habkost <eduardo@habkost.net> Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230503182352.792458-1-david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Leonardo Bras [Wed, 3 May 2023 00:27:02 +0000 (21:27 -0300)]
hw/pci: Disable PCI_ERR_UNCOR_MASK register for machine type < 8.0
Since it's implementation on v8.0.0-rc0, having the PCI_ERR_UNCOR_MASK
set for machine types < 8.0 will cause migration to fail if the target
QEMU version is < 8.0.0 :
qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10a read: 40 device: 0 cmask: ff wmask: 0 w1cmask:0
qemu-system-x86_64: Failed to load PCIDevice:config
qemu-system-x86_64: Failed to load e1000e:parent_obj
qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:02.0/e1000e'
qemu-system-x86_64: load of migration failed: Invalid argument
The above test migrated a 7.2 machine type from QEMU master to QEMU 7.2.0,
with this cmdline:
In order to fix this, property x-pcie-err-unc-mask was introduced to
control when PCI_ERR_UNCOR_MASK is enabled. This property is enabled by
default, but is disabled if machine type <= 7.2.
Fixes: 010746ae1d ("hw/pci/aer: Implement PCI_ERR_UNCOR_MASK register") Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Leonardo Bras <leobras@redhat.com>
Message-Id: <20230503002701.854329-1-leobras@redhat.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1576 Tested-by: Fiona Ebner <f.ebner@proxmox.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Stefan Hajnoczi [Mon, 1 May 2023 23:04:09 +0000 (19:04 -0400)]
vhost-user: send SET_STATUS 0 after GET_VRING_BASE
Setting the VIRTIO Device Status Field to 0 resets the device. The
device's state is lost, including the vring configuration.
vhost-user.c currently sends SET_STATUS 0 before GET_VRING_BASE. This
risks confusion about the lifetime of the vhost-user state (e.g. vring
last_avail_idx) across VIRTIO device reset.
Eugenio Pérez <eperezma@redhat.com> adjusted the order for vhost-vdpa.c
in commit c3716f260bff ("vdpa: move vhost reset after get vring base")
and in that commit description suggested doing the same for vhost-user
in the future.
Go ahead and adjust vhost-user.c now. I ran various online code searches
to identify vhost-user backends implementing SET_STATUS. It seems only
DPDK implements SET_STATUS and Yajun Wu <yajunw@nvidia.com> has
confirmed that it is safe to make this change.
Fixes: commit 923b8921d210763359e96246a58658ac0db6c645 ("vhost-user: Support vhost_dev_start") Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Cindy Lu <lulu@redhat.com> Cc: Yajun Wu <yajunw@nvidia.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230501230409.274178-1-stefanha@redhat.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Yajun Wu <yajunw@nvidia.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci: pci_add_option_rom(): refactor: use g_autofree for path variable
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230515125229.44836-3-vsementsov@yandex-team.ru> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com>
Fix over-80 lines and missing curly brackets for if-operators, which
are required by QEMU coding style.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230515125229.44836-2-vsementsov@yandex-team.ru> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com>
Following the guidelines in tests/qtest/bios-tables-test.c, this
is step 5 and 6.
An examination of all the files impacted (as listed in
bios-tables-test-allowe-diff.h) shows only the MADT/APIC tables
bumping revision from 1 to 3, and a corresponding change to
the checksum. The below diff is typical:
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Message-Id: <20230517162545.2191-4-eric.devolder@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Ani Sinha <anisinha@redhat.com>
Eric DeVolder [Wed, 17 May 2023 16:25:44 +0000 (12:25 -0400)]
ACPI: i386: bump to MADT to revision 3
Currently i386 QEMU generates MADT revision 3, and reports
MADT revision 1. Set .revision to 3 to match reality.
Link: https://lore.kernel.org/linux-acpi/20230327191026.3454-1-eric.devolder@ora
cle.com/T/#t Signed-off-by: Eric DeVolder <eric.devolder@oracle.com> Reviewed-by: Ani Sinha <anisinha@redhat.com>
Message-Id: <20230517162545.2191-3-eric.devolder@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Following the guidelines in tests/qtest/bios-tables-test.c,
set up bios-tables-test-allowed-diff.h to ignore the
imminent changes to the APIC tables, per step 2.
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Message-Id: <20230517162545.2191-2-eric.devolder@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Ani Sinha <ani@anisinha.ca>
hw/cxl: Multi-Region CXL Type-3 Devices (Volatile and Persistent)
This commit enables each CXL Type-3 device to contain one volatile
memory region and one persistent region.
Two new properties have been added to cxl-type3 device initialization:
[volatile-memdev] and [persistent-memdev]
The existing [memdev] property has been deprecated and will default the
memory region to a persistent memory region (although a user may assign
the region to a ram or file backed region). It cannot be used in
combination with the new [persistent-memdev] property.
Partitioning volatile memory from persistent memory is not yet supported.
Volatile memory is mapped at DPA(0x0), while Persistent memory is mapped
at DPA(vmem->size), per CXL Spec 8.2.9.8.2.0 - Get Partition Info.
Signed-off-by: Gregory Price <gregory.price@memverge.com> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Reviewed-by: Fan Ni <fan.ni@samsung.com> Tested-by: Fan Ni <fan.ni@samsung.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421160827.2227-4-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Fri, 21 Apr 2023 16:08:26 +0000 (17:08 +0100)]
hw/mem: Use memory_region_size() in cxl_type3
Accessors prefered over direct use of int128_get64() as they
clamp out of range values. None are expected here but
cleaner to always use the accessor than mix and match.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421160827.2227-3-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Gregory Price <gregory.price@memverge.com>
tests/qtest/cxl-test: whitespace, line ending cleanup
Defines are starting to exceed line length limits, align them for
cleanliness before making modifications.
Signed-off-by: Gregory Price <gregory.price@memverge.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421160827.2227-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Fri, 21 Apr 2023 13:59:06 +0000 (14:59 +0100)]
hw/cxl: Fix incorrect reset of commit and associated clearing of committed.
The hardware clearing the commit bit is not spec compliant.
Clearing of committed bit when commit is cleared is not specifically
stated in the CXL spec, but is the expected (and simplest) permitted
behaviour so use that for QEMU emulation.
Reviewed-by: Fan Ni <fan.ni@samsung.com> Tested-by: Fan Ni <fan.ni@samsung.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
--
v2: Picked up tags.
Message-Id: <20230421135906.3515-4-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Fri, 21 Apr 2023 13:59:05 +0000 (14:59 +0100)]
hw/cxl: Fix endian handling for decoder commit.
Not a real problem yet as all supported architectures are
little endian, but continue to tidy these up when touching
code for other reasons.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421135906.3515-3-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Fri, 21 Apr 2023 13:59:04 +0000 (14:59 +0100)]
hw/cxl: drop pointless memory_region_transaction_guards
Not clear what intent was here, but probably based on a misunderstanding
of what these guards are for.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421135906.3515-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Raghu H [Fri, 21 Apr 2023 13:45:07 +0000 (14:45 +0100)]
docs/cxl: Replace unsupported AARCH64 with x86_64
Currently Qemu CXL emulation support is not availabe on AARCH64 but its
available with qemu x86_64 architecture, updating the document to reflect
the supported platform.
Signed-off-by: Raghu H <raghuhack78@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421134507.26842-4-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Raghu H [Fri, 21 Apr 2023 13:45:06 +0000 (14:45 +0100)]
docs/cxl: Remove incorrect CXL type 3 size parameter
cxl-type3 memory size is read directly from the provided memory backed end
device. Remove non existent size option
Signed-off-by: Raghu H <raghuhack78@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421134507.26842-3-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421134507.26842-2-Jonathan.Cameron@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Jonathan Cameron [Fri, 21 Apr 2023 13:20:20 +0000 (14:20 +0100)]
hw/cxl: cdat: Fix failure to free buffer in erorr paths
The failure paths in CDAT file loading did not clear up properly.
Change to using g_auto_free and a local pointer for the buffer to
ensure this function has no side effects on error.
Also drop some unnecessary checks that can not fail.
Cleanup properly after a failure to load a CDAT file.
Suggested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421132020.7408-3-Jonathan.Cameron@huawei.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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