Merge tag 'pull-qapi-2024-08-05' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-08-05

# -----BEGIN PGP SIGNATURE-----
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# iQJGBAABCAAwFiEENUvIs9frKmtoZ05fOHC0AOuRhlMFA

Merge tag 'pull-qapi-2024-08-05' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-08-05

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# gpg: Signature made Mon 05 Aug 2024 05:55:49 PM AEST
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]

* tag 'pull-qapi-2024-08-05' of https://repo.or.cz/qemu/armbru:
qmp: Fix higher half vaddrs for [p]memsave
qapi: Refill doc comments to conform to conventions

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

show more ...

qapi: Refill doc comments to conform to conventions

Sweep the entire documentation again. Last done in commit
209e64d9edf (qapi: Refill doc comments to conform to current
conventions).

To check th

qapi: Refill doc comments to conform to conventions

Sweep the entire documentation again. Last done in commit
209e64d9edf (qapi: Refill doc comments to conform to current
conventions).

To check the generated documentation does not change, I compared the
generated HTML before and after this commit with "wdiff -3". Finds no
differences. Comparing with diff is not useful, as the reflown
paragraphs are visible there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240729065220.860163-1-armbru@redhat.com>
[Straightforward conflict with commit 442110bc6f3 resolved]

show more ...

Merge tag 'pull-qapi-2024-07-06' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-07-06

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-qapi-2024-07-06' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-07-06

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# gpg: Signature made Fri 05 Jul 2024 11:58:31 PM PDT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]

* tag 'pull-qapi-2024-07-06' of https://repo.or.cz/qemu/armbru:
sphinx/qapidoc: Fix to generate doc for explicit, unboxed arguments
qapi/parser: don't parse rST markup as section headers
qapi: add markup to note blocks
qapi: update prose in note blocks
qapi: convert "Note" sections to plain rST
qapi: nail down convention that Errors sections are lists
qapi: fix non-compliant JSON examples
docs/qapidoc: fix nested parsing under untagged sections
qapi/parser: fix comment parsing immediately following a doc block
qapi/parser: preserve indentation in QAPIDoc sections
docs/qapidoc: delint a tiny portion of the module
docs/qapidoc: remove unused intersperse function
qapi: linter fixups

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

show more ...

qapi: convert "Note" sections to plain rST

We do not need a dedicated section for notes. By eliminating a specially
parsed section, these notes can be treated as normal rST paragraphs in
the new QMP

qapi: convert "Note" sections to plain rST

We do not need a dedicated section for notes. By eliminating a specially
parsed section, these notes can be treated as normal rST paragraphs in
the new QMP reference manual, and can be placed and styled much more
flexibly.

Convert all existing "Note" and "Notes" sections to pure rST. As part of
the conversion, capitalize the first letter of each sentence and add
trailing punctuation where appropriate to ensure notes look sensible and
consistent in rendered HTML documentation. Markup is also re-aligned to
the de-facto standard of 3 spaces for directives.

Update docs/devel/qapi-code-gen.rst to reflect the new paradigm, and
update the QAPI parser to prohibit "Note" sections while suggesting a
new syntax. The exact formatting to use is a matter of taste, but a good
candidate is simply:

.. note:: lorem ipsum ...
... dolor sit amet ...
... consectetur adipiscing elit ...

... but there are other choices, too. The Sphinx readthedocs theme
offers theming for the following forms (capitalization unimportant); all
are adorned with a (!) symbol () in the title bar for rendered HTML
docs.

See
https://sphinx-rtd-theme.readthedocs.io/en/stable/demo/demo.html#admonitions
for examples of each directive/admonition in use.

These are rendered in orange:

.. Attention:: ...
.. Caution:: ...
.. WARNING:: ...

These are rendered in red:

.. DANGER:: ...
.. Error:: ...

These are rendered in green:

.. Hint:: ...
.. Important:: ...
.. Tip:: ...

These are rendered in blue:

.. Note:: ...
.. admonition:: custom title

admonition body text

This patch uses ".. note::" almost everywhere, with just two "caution"
directives. Several instances of "Notes:" have been converted to
merely ".. note::", or multiple ".. note::" where appropriate.
".. admonition:: notes" is used in a few places where we had an
ordered list of multiple notes that would not make sense as
standalone/separate admonitions. Two "Note:" following "Example:"
have been turned into ordinary paragraphs within the example.

NOTE: Because qapidoc.py does not attempt to preserve source ordering of
sections, the conversion of Notes from a "tagged section" to an
"untagged section" means that rendering order for some notes *may
change* as a result of this patch. The forthcoming qapidoc.py rewrite
strictly preserves source ordering in the rendered documentation, so
this issue will be rectified in the new generator.

Signed-off-by: John Snow <jsnow@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com> [for block*.json]
Message-ID: <20240626222128.406106-11-jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message clarified slightly, period added to one more note]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

show more ...

Merge tag 'pull-qapi-2024-03-26' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-03-26

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-qapi-2024-03-26' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-03-26

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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 26 Mar 2024 05:36:13 GMT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2024-03-26' of https://repo.or.cz/qemu/armbru:
qapi: document parameters of query-cpu-model-* QAPI commands
qapi/block-core: improve Qcow2OverlapCheckFlags documentation
qapi: document leftover members in qapi/stats.json
qapi: document leftover members in qapi/run-state.json
qapi: document InputMultiTouchType
qga/qapi-schema: Refill doc comments to conform to current conventions
qapi: Correct documentation indentation and whitespace
qapi: Refill doc comments to conform to current conventions
qapi: Don't repeat member type in its documentation text
qapi: Start sentences with a capital letter, end them with a period
qapi: Fix abbreviation punctuation in doc comments
qapi: Fix typo in request-ebpf documentation
qapi: Fix argument markup in drive-mirror documentation
qapi: Tidy up indentation of add_client's example
qapi: Tidy up block-latency-histogram-set documentation some more
qapi: Expand a few awkward abbreviations in documentation
qapi: Drop stray Arguments: line from qmp_capabilities docs
qapi: Fix bogus documentation of query-migrationthreads
qapi: Resync MigrationParameter and MigrateSetParameters
qapi: Improve migration TLS documentation

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

show more ...

qapi: document leftover members in qapi/stats.json

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240325104504.1358734-1-pbonzi

qapi: document leftover members in qapi/stats.json

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240325104504.1358734-1-pbonzini@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Update qapi/pragma.json]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

show more ...

Merge tag 'pull-qapi-2024-02-12' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-02-12

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-qapi-2024-02-12' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-02-12

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# gpg: Signature made Mon 12 Feb 2024 09:12:27 GMT
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2024-02-12' of https://repo.or.cz/qemu/armbru:
MAINTAINERS: Cover qapi/stats.json
MAINTAINERS: Cover qapi/cxl.json
qapi/migration: Add missing tls-authz documentation
qapi: Add missing union tag documentation
qapi: Move @String out of common.json to discourage reuse
qapi: Improve documentation of file descriptor socket addresses
qapi: Plug trivial documentation holes around former simple unions
qapi/dump: Clean up documentation of DumpGuestMemoryCapability
qapi/yank: Clean up documentaion of yank
qga/qapi-schema: Plug trivial documentation holes
qga/qapi-schema: Clean up documentation of guest-set-vcpus
qga/qapi-schema: Clean up documentation of guest-set-memory-blocks
qapi: Require member documentation (with loophole)
sphinx/qapidoc: Drop code to generate doc for simple union tag
qapi: Indent tagged doc comment sections properly
qapi/block-core: Fix BlockLatencyHistogramInfo doc markup
docs/devel/qapi-code-gen: Tweak doc comment whitespace
docs/devel/qapi-code-gen: Normalize version refs x.y.0 to just x.y

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

show more ...

qapi: Add missing union tag documentation

Low-hanging fruit, and except for StatsFilter, the only members of
these unions lacking documentation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>

qapi: Add missing union tag documentation

Low-hanging fruit, and except for StatsFilter, the only members of
these unions lacking documentation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-16-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

show more ...

Merge tag 'pull-qapi-2023-05-09-v2' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2023-05-09

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-qapi-2023-05-09-v2' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2023-05-09

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# gpg: Signature made Wed 10 May 2023 09:05:26 AM BST
# 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-2023-05-09-v2' of https://repo.or.cz/qemu/armbru:
qapi: Reformat doc comments to conform to current conventions
qga/qapi-schema: Reformat doc comments to conform to current conventions
docs/devel/qapi-code-gen: Update doc comment conventions
qapi: Section parameter @indent is no longer used, drop
qapi: Relax doc string @name: description indentation rules
qapi: Rewrite parsing of doc comment section symbols and tags
qapi: Fix argument description indentation stripping
tests/qapi-schema/doc-good: Improve argument description tests
tests/qapi-schema/doc-good: Improve a comment
qapi/dump: Indent bulleted lists consistently
qapi: Tidy up a slightly awkward TODO comment
sphinx/qapidoc: Do not emit TODO sections into user manuals
Revert "qapi: BlockExportRemoveMode: move comments to TODO"
meson: Fix to make QAPI generator output depend on main.py
qapi: Fix crash on stray double quote character
docs/devel/qapi-code-gen: Turn FIXME admonitions into comments
docs/devel/qapi-code-gen: Clean up use of quotes a bit

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

show more ...

qapi: Reformat doc comments to conform to current conventions

Change

# @name: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed
# do eiusmod tempor incididunt ut labore et

qapi: Reformat doc comments to conform to current conventions

Change

# @name: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed
# do eiusmod tempor incididunt ut labore et dolore magna aliqua.

to

# @name: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed
# do eiusmod tempor incididunt ut labore et dolore magna aliqua.

See recent commit "qapi: Relax doc string @name: description
indentation rules" for rationale.

Reflow paragraphs to 70 columns width, and consistently use two spaces
to separate sentences.

To check the generated documentation does not change, I compared the
generated HTML before and after this commit with "wdiff -3". Finds no
differences. Comparing with diff is not useful, as the reflown
paragraphs are visible there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230428105429.1687850-18-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Lukas Straub <lukasstraub2@web.de>
[Straightforward conflicts in qapi/audio.json qapi/misc-target.json
qapi/run-state.json resolved]

show more ...

Merge tag 'pull-qapi-2023-04-28' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2023-04-28

# -----BEGIN PGP SIGNATURE-----
#
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Merge tag 'pull-qapi-2023-04-28' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2023-04-28

# -----BEGIN PGP SIGNATURE-----
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# gpg: Signature made Fri 28 Apr 2023 10:49:15 AM BST
# 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-2023-04-28' of https://repo.or.cz/qemu/armbru:
docs/devel/qapi-code-gen: Describe some doc markup pitfalls
qapi storage-daemon/qapi: Fix documentation section structure
qapi: Format since information the conventional way: (since X.Y)
qapi: Fix misspelled section tags in doc comments
qapi: Replace ad hoc "since" documentation by member documentation
qapi: Fix argument documentation markup
qga/qapi-schema: Fix member documentation markup
qapi: Fix unintended definition lists in documentation
qapi: Fix bullet list markup in documentation
qapi: Delete largely misleading "Stability Considerations"
qapi: Tidy up examples
qapi: @foo should be used to reference, not ``foo``
qapi/block-core: Clean up after removal of dirty bitmap @status
qapi: Fix up references to long gone error classes
qapi: Fix misspelled references
qga/qapi-schema: Fix a misspelled reference
qga/qapi-schema: Tidy up documentation of guest-fsfreeze-status

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

show more ...

qapi: Format since information the conventional way: (since X.Y)

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-b

qapi: Format since information the conventional way: (since X.Y)

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-16-armbru@redhat.com>

show more ...

qapi: Fix bullet list markup in documentation

Peter Maydell's commit 100cc4fe0f08 explains:

rST insists on a blank line before and after a bulleted list [...]
Add some extra blank lines in

qapi: Fix bullet list markup in documentation

Peter Maydell's commit 100cc4fe0f08 explains:

rST insists on a blank line before and after a bulleted list [...]
Add some extra blank lines in the doc comments so they're
acceptable rST input.

It missed one in qapi/trace.json.

Paolo Bonzini later added another instance in qapi/stats.json,
providing further, if unintended, evidence for his quip that rST is
the Perl of ASCII-based markups.

Both are parsed as ordinary paragraph, resulting in garbled output.

John Snow missed the need for a blank line when converting
docs/devel/qapi-code-gen.txt to rST.

Add the blank lines we need to get the bullet lists recognized as
such.

Kevin Wolf and Lukas Straub added two more, but indented. Sphinx
recognizes them as (indented) bullet lists. The indentation looks
slightly off.

Insert a blank line and delete the extra indentation.

Fixes: 100cc4fe0f0827f8da1a5c05f9c65e2aaa40e03d (qapi: Add blank lines before bulleted lists)
Fixes: 467ef823d83e (qmp: add filtering of statistics by target vCPU)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-10-armbru@redhat.com>
[Fix of docs/devel/qapi-code-gen.rst squashed, commit message adjusted]

show more ...

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, fixes

Several features that landed at the last possible moment:

Passthrough HDM d

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, fixes

Several features that landed at the last possible moment:

Passthrough HDM decoder emulation
Refactor cryptodev
RAS error emulation and injection
acpi-index support on non-hotpluggable slots
Dynamically switch to vhost shadow virtqueues at vdpa net migration

Plus a couple of bugfixes that look important to have in the release.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg: Signature made Thu 09 Mar 2023 14:46:14 GMT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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: (72 commits)
virtio: fix reachable assertion due to stale value of cached region size
hw/virtio/vhost-user: avoid using unitialized errp
hw/pxb-cxl: Support passthrough HDM Decoders unless overridden
hw/pci: Add pcie_count_ds_port() and pcie_find_port_first() helpers
hw/mem/cxl_type3: Add CXL RAS Error Injection Support.
hw/pci/aer: Make PCIE AER error injection facility available for other emulation to use.
hw/cxl: Fix endian issues in CXL RAS capability defaults / masks
hw/mem/cxl-type3: Add AER extended capability
hw/pci-bridge/cxl_root_port: Wire up MSI
hw/pci-bridge/cxl_root_port: Wire up AER
hw/pci/aer: Add missing routing for AER errors
hw/pci/aer: Implement PCI_ERR_UNCOR_MASK register
pcihp: add ACPI PCI hotplug specific is_hotpluggable_bus() callback
pcihp: move fields enabling hotplug into AcpiPciHpState
acpi: pci: move out ACPI PCI hotplug generator from generic slot generator build_append_pci_bus_devices()
acpi: pci: move BSEL into build_append_pcihp_slots()
acpi: pci: drop BSEL usage when deciding that device isn't hotpluggable
pci: move acpi-index uniqueness check to generic PCI device code
tests: acpi: update expected blobs
tests: acpi: add non zero function device with acpi-index on non-hotpluggble bus
...

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

show more ...

cryptodev: Support query-stats QMP command

Now we can use "query-stats" QMP command to query statistics of
crypto devices. (Originally this was designed to show statistics
by '{"execute": "query-cry

cryptodev: Support query-stats QMP command

Now we can use "query-stats" QMP command to query statistics of
crypto devices. (Originally this was designed to show statistics
by '{"execute": "query-cryptodev"}'. Daniel Berrangé suggested that
querying configuration info by "query-cryptodev", and querying
runtime performance info by "query-stats". This makes sense!)

Example:
~# virsh qemu-monitor-command vm '{"execute": "query-stats", \
"arguments": {"target": "cryptodev"} }' | jq
{
"return": [
{
"provider": "cryptodev",
"stats": [
{
"name": "asym-verify-bytes",
"value": 7680
},
...
{
"name": "asym-decrypt-ops",
"value": 32
},
{
"name": "asym-encrypt-ops",
"value": 48
}
],
"qom-path": "/objects/cryptodev0" # support asym only
},
{
"provider": "cryptodev",
"stats": [
{
"name": "asym-verify-bytes",
"value": 0
},
...
{
"name": "sym-decrypt-bytes",
"value": 5376
},
...
],
"qom-path": "/objects/cryptodev1" # support asym/sym
}
],
"id": "libvirt-422"
}

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-12-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* Boolean statistics for KVM
* Fix build on Haiku

# gpg: Signature made Tue 19 Jul 2022 10:32:34 BST
# gpg: u

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* Boolean statistics for KVM
* Fix build on Haiku

# gpg: Signature made Tue 19 Jul 2022 10:32:34 BST
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
util: Fix broken build on Haiku
kvm: add support for boolean statistics
monitor: add support for boolean statistics

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

show more ...

monitor: add support for boolean statistics

The next version of Linux will introduce boolean statistics, which
can only have 0 or 1 values. Support them in the schema and in
the HMP command.

Sugge

monitor: add support for boolean statistics

The next version of Linux will introduce boolean statistics, which
can only have 0 or 1 values. Support them in the schema and in
the HMP command.

Suggested-by: Amneesh Singh <natto@weirdnatto.in>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* statistics subsystem
* virtio reset cleanups
* build system cleanups
* fix Cirrus CI

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* statistics subsystem
* virtio reset cleanups
* build system cleanups
* fix Cirrus CI

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# gpg: Signature made Wed 15 Jun 2022 02:12:36 AM 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' of https://gitlab.com/bonzini/qemu: (21 commits)
build: include pc-bios/ part in the ROMS variable
meson: put cross compiler info in a separate section
q35：Enable TSEG only when G_SMRAME and TSEG_EN both enabled
build: fix check for -fsanitize-coverage-allowlist
tests/vm: allow running tests in an unconfigured source tree
configure: cleanup -fno-pie detection
configure: update list of preserved environment variables
virtio-mmio: cleanup reset
virtio: stop ioeventfd on reset
virtio-mmio: stop ioeventfd on legacy reset
s390x: simplify virtio_ccw_reset_virtio
block: add more commands to preconfig mode
hmp: add filtering of statistics by name
qmp: add filtering of statistics by name
hmp: add filtering of statistics by provider
qmp: add filtering of statistics by provider
hmp: add basic "info stats" implementation
cutils: add functions for IEC and SI prefixes
qmp: add filtering of statistics by target vCPU
kvm: Support for querying fd-based stats
...

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

show more ...

qmp: add filtering of statistics by name

Allow retrieving only a subset of statistics. This can be useful
for example in order to plot a subset of the statistics many times
a second: KVM publishes

qmp: add filtering of statistics by name

Allow retrieving only a subset of statistics. This can be useful
for example in order to plot a subset of the statistics many times
a second: KVM publishes ~40 statistics for each vCPU on x86; retrieving
and serializing all of them would be useless.

Another use will be in HMP in the following patch; implementing the
filter in the backend is easy enough that it was deemed okay to make
this a public interface.

Example:

{ "execute": "query-stats",
"arguments": {
"target": "vcpu",
"vcpus": [ "/machine/unattached/device[2]",
"/machine/unattached/device[4]" ],
"providers": [
{ "provider": "kvm",
"names": [ "l1d_flush", "exits" ] } } }

{ "return": {
"vcpus": [
{ "path": "/machine/unattached/device[2]"
"providers": [
{ "provider": "kvm",
"stats": [ { "name": "l1d_flush", "value": 41213 },
{ "name": "exits", "value": 74291 } ] } ] },
{ "path": "/machine/unattached/device[4]"
"providers": [
{ "provider": "kvm",
"stats": [ { "name": "l1d_flush", "value": 16132 },
{ "name": "exits", "value": 57922 } ] } ] } ] } }

Extracted from a patch by Mark Kanda.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

qmp: add filtering of statistics by provider

Allow retrieving the statistics from a specific provider only.
This can be used in the future by HMP commands such as "info
sync-profile" or "info profil

qmp: add filtering of statistics by provider

Allow retrieving the statistics from a specific provider only.
This can be used in the future by HMP commands such as "info
sync-profile" or "info profile". The next patch also adds
filter-by-provider capabilities to the HMP equivalent of
query-stats, "info stats".

Example:

{ "execute": "query-stats",
"arguments": {
"target": "vm",
"providers": [
{ "provider": "kvm" } ] } }

The QAPI is a bit more verbose than just a list of StatsProvider,
so that it can be subsequently extended with filtering of statistics
by name.

If a provider is specified more than once in the filter, each request
will be included separately in the output.

Extracted from a patch by Mark Kanda.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

qmp: add filtering of statistics by target vCPU

Introduce a simple filtering of statistics, that allows to retrieve
statistics for a subset of the guest vCPUs. This will be used for
example by the

qmp: add filtering of statistics by target vCPU

Introduce a simple filtering of statistics, that allows to retrieve
statistics for a subset of the guest vCPUs. This will be used for
example by the HMP monitor, in order to retrieve the statistics
for the currently selected CPU.

Example:
{ "execute": "query-stats",
"arguments": {
"target": "vcpu",
"vcpus": [ "/machine/unattached/device[2]",
"/machine/unattached/device[4]" ] } }

Extracted from a patch by Mark Kanda.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

kvm: Support for querying fd-based stats

Add support for querying fd-based KVM stats - as introduced by Linux kernel
commit:

cb082bfab59a ("KVM: stats: Add fd-based API to read binary stats data")

kvm: Support for querying fd-based stats

Add support for querying fd-based KVM stats - as introduced by Linux kernel
commit:

cb082bfab59a ("KVM: stats: Add fd-based API to read binary stats data")

This allows the user to analyze the behavior of the VM without access
to debugfs.

Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

qmp: Support for querying stats

Gathering statistics is important for development, for monitoring and
for performance measurement. There are tools such as kvm_stat that do
this and they rely on the

qmp: Support for querying stats

Gathering statistics is important for development, for monitoring and
for performance measurement. There are tools such as kvm_stat that do
this and they rely on the _user_ knowing the interesting data points
rather than the tool (which can treat them as opaque).

The commands introduced in this commit introduce QMP support for
querying stats; the goal is to take the capabilities of these tools
and making them available throughout the whole virtualization stack,
so that one can observe, monitor and measure virtual machines without
having shell access + root on the host that runs them.

query-stats returns a list of all stats per target type (only VM
and vCPU to start); future commits add extra options for specifying
stat names, vCPU qom paths, and providers. All these are used by the
HMP command "info stats". Because of the development usecases around
statistics, a good HMP interface is important.

query-stats-schemas returns a list of stats included in each target
type, with an option for specifying the provider. The concepts in the
schema are based on the KVM binary stats' own introspection data, just
translated to QAPI.

There are two reasons to have a separate schema that is not tied to
the QAPI schema. The first is the contents of the schemas: the new
introspection data provides different information than the QAPI data,
namely unit of measurement, how the numbers are gathered and change
(peak/instant/cumulative/histogram), and histogram bucket sizes.
There's really no reason to have this kind of metadata in the QAPI
introspection schema (except possibly for the unit of measure, but
there's a very weak justification).

Another reason is the dynamicity of the schema. The QAPI introspection
data is very much static; and while QOM is somewhat more dynamic,
generally we consider that to be a bug rather than a feature these days.
On the other hand, the statistics that are exposed by QEMU might be
passed through from another source, such as KVM, and the disadvantages of
manually updating the QAPI schema for outweight the benefits from vetting
the statistics and filtering out anything that seems "too unstable".
Running old QEMU with new kernel is a supported usecase; if old QEMU
cannot expose statistics from a new kernel, or if a kernel developer
needs to change QEMU before gathering new info from the new kernel,
then that is a poor user interface.

The framework provides a method to register callbacks for these QMP
commands. Most of the work in fact is done by the callbacks, and a
large majority of this patch is new QAPI structs and commands.

Examples (with KVM stats):

- Query all VM stats:

{ "execute": "query-stats", "arguments" : { "target": "vm" } }

{ "return": [
{ "provider": "kvm",
"stats": [
{ "name": "max_mmu_page_hash_collisions", "value": 0 },
{ "name": "max_mmu_rmap_size", "value": 0 },
{ "name": "nx_lpage_splits", "value": 148 },
... ] },
{ "provider": "xyz",
"stats": [ ... ] }
] }

- Query all vCPU stats:

{ "execute": "query-stats", "arguments" : { "target": "vcpu" } }

{ "return": [
{ "provider": "kvm",
"qom_path": "/machine/unattached/device[0]"
"stats": [
{ "name": "guest_mode", "value": 0 },
{ "name": "directed_yield_successful", "value": 0 },
{ "name": "directed_yield_attempted", "value": 106 },
... ] },
{ "provider": "kvm",
"qom_path": "/machine/unattached/device[1]"
"stats": [
{ "name": "guest_mode", "value": 0 },
{ "name": "directed_yield_successful", "value": 0 },
{ "name": "directed_yield_attempted", "value": 106 },
... ] },
] }

- Retrieve the schemas:

{ "execute": "query-stats-schemas" }

{ "return": [
{ "provider": "kvm",
"target": "vcpu",
"stats": [
{ "name": "guest_mode",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "instant" },
{ "name": "directed_yield_successful",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "cumulative" },
... ]
},
{ "provider": "kvm",
"target": "vm",
"stats": [
{ "name": "max_mmu_page_hash_collisions",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "peak" },
... ]
},
{ "provider": "xyz",
"target": "vm",
"stats": [ ... ]
}
] }

Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...