There are no longer any VMStateDescription structs in the tree which
use the load_state_old support for custom handling of incoming
migration from very old QEMU. Remove the mechanism entirely.
This includes removing one stray useless setting of
minimum_version_id_old in a VMStateDescription with no load_state_old
function, which crept in after the global weeding-out of them in
commit 17e3134061.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220215175705.3846411-1-peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Although running on aarch64 hardware we can still target 32bit builds
with a cross compiler and run the resulting binaries.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220225172021.3493923-10-alex.bennee@linaro.org>
Currently there is no way for a board model's Kconfig stanza to
say "I have an i2c bus which the user can plug an i2c device into,
build all the free-standing i2c devices". The Kconfig mechanism
for this is the "device group". Add an I2C_DEVICES group along
the same lines as the existing PCI_DEVICES. Simple free-standing
i2c devices which a user might plausibly want to be able to
plug in on the QEMU commandline should have
default y if I2C_DEVICES
and board models which have an i2c bus that is user-accessible
should use
imply I2C_DEVICES
to cause those pluggable devices to be built.
In this commit we mark only a fairly conservative set of i2c devices
as belonging to the I2C_DEVICES group: the simple sensors and RTCs
(not including PMBus devices or devices which need GPIO lines to be
connected).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Message-id: 20220208155911.3408455-2-peter.maydell@linaro.org
Users wanting this sort of functionality should turn to TCG plugins
instead.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Luis Vilanova <vilanova@imperial.ac.uk>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220204204335.1689602-18-alex.bennee@linaro.org>
Ideally we should keep all our automatic formatting gubins in here.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220204204335.1689602-13-alex.bennee@linaro.org>
* "meson test" switch for iotests
* deprecation of old SGX QAPI
* unexport InterruptStatsProviderClass-related functions
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Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
* configure and meson fixes
* "meson test" switch for iotests
* deprecation of old SGX QAPI
* unexport InterruptStatsProviderClass-related functions
# gpg: Signature made Fri 28 Jan 2022 10:13:36 GMT
# 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
* remotes/bonzini-gitlab/tags/for-upstream:
configure: fix parameter expansion of --cross-cc-cflags options
qapi: Cleanup SGX related comments and restore @section-size
check-block: replace -makecheck with TAP output
qemu-iotests: require at least an argument to check-block.sh
build: make check-block a meson test
scripts/mtest2make: add support for SPEED=thorough
check-block.sh: passthrough -jN flag of make to -j N flag of check
meson: Use find_program() to resolve the entitlement.sh script
exec/cpu: Make host pages variables / macros 'target agnostic'
meson.build: Use a function from libfdt 1.5.1 for the library check
intc: Unexport InterruptStatsProviderClass-related functions
docker: add msitools to Fedora/mingw cross
build-sys: fix undefined ARCH error
build-sys: fix a meson deprecation warning
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Without this fix, any use of --cross-cc-cflags-* causes a message like:
$ ../configure --cross-cc-ppc64le=clang --cross-cc-cflags-ppc64le="-target powerpc64le-unknown-linux-gnu -sysroot ..."
../configure: 1: eval: cross_cc_cflags_--cross-cc-cflags-ppc64le=-target: not found
../configure: 3816: export: cross_cc_cflags_--cross-cc-cflags-ppc64le: bad variable name
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20220120173142.2755077-1-matheus.ferst@eldorado.org.br>
[Fix other occurrences too, noted by Philippe Mathieu-Daudé. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Previous commits enabled trace events generation for most of QAPI
generated code (except for tests/ and qga/). Let's update documentation
to illustrate it.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20220126161130.3240892-6-vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Move error_propagate() to if (err) and make "if (err)" block mandatory.
This is to simplify further commit, which will bring trace events
generation for QMP commands.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220126161130.3240892-3-vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
- fix compiler warnings with ui and sdl
- update QXL/spice dependancy
- skip I/O tests on Alpine
- update fedora image to latest version
- integrate lcitool and regenerate docker images
- favour CONFIG_LINUX_USER over CONFIG_LINUX
- add libfuse3 dependencies to docker images
- add dtb-kaslr-seed control knob to virt machine
- fix build breakage from HMP update
- update docs for C standard and suffix usage
- add more logging for debugging user hole finding
- expand reserve for brk() for static 64 bit programs
- fix bug with linux-user hole calculation
- avoid affecting flags when printing results in float tests
- add float reference files for ppc64
- update FreeBSD to 12.3
- add bison dependancy to tricore images
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-for-7.0-180122-2' into staging
Various testing and other misc updates:
- fix compiler warnings with ui and sdl
- update QXL/spice dependancy
- skip I/O tests on Alpine
- update fedora image to latest version
- integrate lcitool and regenerate docker images
- favour CONFIG_LINUX_USER over CONFIG_LINUX
- add libfuse3 dependencies to docker images
- add dtb-kaslr-seed control knob to virt machine
- fix build breakage from HMP update
- update docs for C standard and suffix usage
- add more logging for debugging user hole finding
- expand reserve for brk() for static 64 bit programs
- fix bug with linux-user hole calculation
- avoid affecting flags when printing results in float tests
- add float reference files for ppc64
- update FreeBSD to 12.3
- add bison dependancy to tricore images
# gpg: Signature made Tue 18 Jan 2022 16:47:42 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-for-7.0-180122-2: (31 commits)
docker: include bison in debian-tricore-cross
FreeBSD: Upgrade to 12.3 release
test/tcg/ppc64le: Add float reference files
tests/tcg/multiarch: Read fp flags before printf
linux-user: don't adjust base of found hole
linux-user/elfload: add extra logging for hole finding
linux-user: expand reserved brk space for 64bit guests
docs/devel: more documentation on the use of suffixes
docs/devel: update C standard to C11
monitor: move x-query-profile into accel/tcg to fix build
hw/arm: add control knob to disable kaslr_seed via DTB
tests/docker: add libfuse3 development headers
tests/tcg: use CONFIG_LINUX_USER, not CONFIG_LINUX
tests/docker: auto-generate alpine.docker with lcitool
tests/docker: fully expand the alpine package list
tests/docker: fix sorting of alpine image package lists
tests/docker: updates to alpine package list
.gitlab-ci.d/cirrus: auto-generate variables with lcitool
tests/docker: remove ubuntu.docker container
tests/docker: auto-generate opensuse-leap.docker with lcitool
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Using _qemu is a little confusing. Let's use _compat for these sorts
of things. We should also mention _impl which is another common suffix
in the code base.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20220105135009.1584676-25-alex.bennee@linaro.org>
Since 8a9d3d5640 (configure: Use -std=gnu11) we have allowed C11 code
so lets reflect that in the style guide.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20220105135009.1584676-24-alex.bennee@linaro.org>
This introduces
https://gitlab.com/libvirt/libvirt-ci
as a git submodule at tests/lcitool/libvirt-ci
The 'lcitool' program within this submodule will be used to
automatically generate build environment manifests from a definition
of requirements in tests/lcitool/projects/qemu.yml
It will ultimately be capable of generating
- Dockerfiles
- Package lists for installation in VMs
- Variables for configuring Cirrus CI environments
When a new build pre-requisite is needed for QEMU, if this package
is not currently known to libvirt-ci, it must first be added to the
'mappings.yml' file in the above git repo.
Then the submodule can be updated and the build pre-requisite added
to the tests/lcitool/projects/qemu.yml file. Now all the build env
manifests can be re-generated using 'make lcitool-refresh'
This ensures that when a new build pre-requisite is introduced, it
is added to all the different OS containers, VMs and Cirrus CI
environments consistently.
It also facilitates the addition of containers targetting new distros
or updating existing containers to new versions of the same distro,
where packages might have been renamed.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211215141949.3512719-8-berrange@redhat.com>
Message-Id: <20220105135009.1584676-8-alex.bennee@linaro.org>
We do mention the limitation of single parenthood for
memory_region_add_subregion but lets also make it clear how aliases
help solve that conundrum.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220110175104.2908956-7-alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211118192744.64325-1-philmd@redhat.com>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20211117210702.1393570-1-sw@weilnetz.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[thuth: "what's" --> "what is" as suggested by philmd]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Add some more examples of commonly used commit-message tags.
(Thanks: Alex Bennée)
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20211119193118.949698-3-kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
I completely botched up the merged[0] rST conversion of this document by
accidentally dropping entire hunks (!) of text. :-( I made it very hard
for reviewers to spot it, as the omitted text was buried deep in the
document. To fix my hatchet job, I reconverted the "SubmitAPatch"
wiki[1] page from scratch and replaced the existing rST with it, while
making sure I incorporated previous feedback.
In summary, in this reconverted edition:
- I did a careful (to the extent my eyes allowed) para-by-para
comparison of the wiki and the rST to make sure I didn't omit
anything accidentally.
- I made sure to work in the cosmetic feedback[2] that Thomas Huth
pointed out in the merged (and botched) edition:
- fix the hyperlinks in "Split up long patches"
- replace ".". with "does not end with a dot" (in "Write a meaningful
commit message" section)
- replace "---" with ``---`` so that it doesn't render as an em-dash
(there were two other occurrences; I fixed those too)
- Use "QEMU" spelling consistently in prose usage
- Add a consistent "refer to git-config" link where appropriate
Thanks to Thomas Huth and Alex Bennée for noticing it on IRC. And sorry
for my sloppiness.
Fixes: 9f73de8df0 ("docs: rSTify the "SubmitAPatch" wiki")
[0] https://gitlab.com/qemu-project/qemu/-/commit/9f73de8df033
[1] https://wiki.qemu.org/index.php?title=Contribute/SubmitAPatch&oldid=10387
[2] https://lists.nongnu.org/archive/html/qemu-devel/2021-11/msg03600.html
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20211119193118.949698-2-kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[thuth: Some more cosmetical changes, fixed links from external to internal]
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
Bugfixes for 6.2.
# gpg: Signature made Fri 19 Nov 2021 10:33:29 AM CET
# 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]
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
chardev/wctable: don't free the instance in wctablet_chr_finalize
meson.build: Support ncurses on MacOS and OpenBSD
docs: Spell QEMU all caps
qtest/am53c974-test: add test for reset before transfer
esp: ensure that async_len is reset to 0 during esp_hard_reset()
nvmm: Fix support for stable version
meson: fix botched compile check conversions
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
- The original wiki is here[1]. I copied the wiki source[2] into a .wiki
file, and used `pandoc` to convert it to rST:
$> pandoc -f Mediawiki -t rst submitting-a-patch.wiki -o
submitting-a-patch.rst
- The only minor touch-ups I did was to fix URLs. But 99%, it is a 1-1
conversion.
(An example of a "touch-up": under the section "Patch emails must
include a Signed-off-by: line", I updated the "see SubmittingPatches
1.12" to "1.12) Sign your work")
- I have also converted a couple other related wiki pages (included in
this patch series) that were hyperlinked within the SubmitAPatch page,
or a page that it refers to:
- SubmitAPullRequest: https://wiki.qemu.org/Contribute/SubmitAPullRequest
- TrivialPatches: https://wiki.qemu.org/Contribute/TrivialPatches
- Over time, many people contributed to this wiki page; you can find all
the authors in the wiki history[3].
[1] https://wiki.qemu.org/Contribute/SubmitAPatch
[2] http://wiki.qemu.org/index.php?title=Contribute/SubmitAPatch&action=edit
[3] http://wiki.qemu.org/index.php?title=Contribute/SubmitAPatch&action=history
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20211110144902.388183-4-kchamart@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[thuth: Cosmetic fixes]
Signed-off-by: Thomas Huth <thuth@redhat.com>
The original wiki is here[1]. I converted by copying the wiki source
into a .wiki file and convert to rST using `pandoc`:
$ pandoc -f Mediawiki -t rst submitting-a-pull-request.wiki \
-o submitting-a-pull-request.rst
This is a 1-1 conversion; no content changes.
[1] https://wiki.qemu.org/Contribute/SubmitAPullRequest
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211110144902.388183-3-kchamart@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The original wiki is here[1]. I converted by copying the wiki source
into a .wiki file and convert to rST using `pandoc`:
$ pandoc -f Mediawiki -t rst trivial-patches.wiki -o trivial-patches.rst
Update the active maintainer names (and drop Michael Tokarev's inactive
repo) to reflect current reality.
[1] https://wiki.qemu.org/Contribute/TrivialPatches
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211110144902.388183-2-kchamart@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This introduces three different parts of a job designed to run
on a custom runner managed by Red Hat. The goals include:
a) propose a model for other organizations that want to onboard
their own runners, with their specific platforms, build
configuration and tests.
b) bring awareness to the differences between upstream QEMU and the
version available under CentOS Stream, which is "A preview of
upcoming Red Hat Enterprise Linux minor and major releases".
c) because of b), it should be easier to identify and reduce the gap
between Red Hat's downstream and upstream QEMU.
The components of this custom job are:
I) OS build environment setup code:
- additions to the existing "build-environment.yml" playbook
that can be used to set up CentOS/EL 8 systems.
- a CentOS Stream 8 specific "build-environment.yml" playbook
that adds to the generic one.
II) QEMU build configuration: a script that will produce binaries with
features as similar as possible to the ones built and packaged on
CentOS stream 8.
III) Scripts that define the minimum amount of testing that the
binaries built with the given configuration (point II) under the
given OS build environment (point I) should be subjected to.
IV) Job definition: GitLab CI jobs that will dispatch the build/test
jobs (see points #II and #III) to the machine specifically
configured according to #I.
Signed-off-by: Cleber Rosa <crosa@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Tested-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20211111160501.862396-2-crosa@redhat.com>
Message-Id: <20211115142915.3797652-6-alex.bennee@linaro.org>
Commit 6a8c0b5102 "qapi: Add feature flags to struct types" neglected
to document how to document feature flags. Make up for that.
Cc: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211026111023.76937-3-armbru@redhat.com>
[Editing accident fixed]
Commit 55ec69f8b1 "docs/devel/qapi-code-gen.txt: Update to new rST
backend conventions" accidentally duplicated a paragraph. Drop it.
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20211026111023.76937-2-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
To run user-mode emulation tests, we introduced the
avocado_qemu.QemuUserTest which inherits from avocado_qemu.QemuBaseTest.
System-mode emulation tests are based on the avocado_qemu.Test class,
which also inherits avocado_qemu.QemuBaseTest. To avoid confusion,
rename it as avocado_qemu.QemuSystemTest.
Suggested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211105143416.148332-7-f4bug@amsat.org>
In the discussion about renaming the `tests/acceptance` [1], the
conclusion was that the folders inside `tests` are related to the
framework running the tests and not directly related to the type of
the tests.
This changes the folder to `tests/avocado` and adjusts the MAKEFILE, the
CI related files and the documentation.
[1] https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg06553.html
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20211105155354.154864-3-willianr@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* extend --extra-*flags behavior to meson-based tests
* allow using snappy in static builds
* i386 TCG fixes
* fix build failure when libgbm is not available
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* Fix off-by-one in MODE SELECT commands
* extend --extra-*flags behavior to meson-based tests
* allow using snappy in static builds
* i386 TCG fixes
* fix build failure when libgbm is not available
# gpg: Signature made Mon 08 Nov 2021 12:20:24 PM CET
# 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]
* remotes/bonzini/tags/for-upstream:
ui/gtk-egl: Fix build failure when libgbm is not available
configure: ignore preexisting QEMU_*FLAGS envvars
configure: propagate --extra-cflags and --extra-ldflags to meson compile tests
configure: preserve CFLAGS, CXXFLAGS and LDFLAGS in config.status
configure: simplify calls to meson_quote
docs: adjust for demise of scripts/create_config
meson: perform snappy test with the C++ compiler if used
hw/scsi/scsi-disk: MODE_PAGE_ALLS not allowed in MODE SELECT commands
target-i386: mmu: fix handling of noncanonical virtual addresses
target-i386: mmu: use pg_mode instead of HF_LMA_MASK
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The config-host.h, $TARGET_NAME-config-target.h,
$TARGET_NAME-config-devices.h files are now generated by
configure_file() rather than scripts/create_config. Adjust
he relevant paragraph in docs/devel/build-system.rst, and take
the occasion to fix a preexisting confusion of *.h vs *.mak.
Reported-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The series rotted already. Here's the new changes.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
[ extra backticks fixes ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20211004215238.1523082-3-jsnow@redhat.com>
The single backtick markup in ReST is the "default role". Currently,
Sphinx's default role is called "content". Sphinx suggests you can use
the "Any" role instead to turn any single-backtick enclosed item into a
cross-reference.
This is useful for things like autodoc for Python docstrings, where it's
often nicer to reference other types with `foo` instead of the more
laborious :py:meth:`foo`. It's also useful in multi-domain cases to
easily reference definitions from other Sphinx domains, such as
referencing C code definitions from outside of kerneldoc comments.
Before we do that, though, we'll need to turn all existing usages of the
"content" role to inline verbatim markup wherever it does not correctly
resolve into a cross-refernece by using double backticks instead.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20211004215238.1523082-2-jsnow@redhat.com>
cache plugin now allows optional L2 per-core cache emulation that can be
configured through plugin arguments, this commit adds this functionality
to the docs.
While I'm at it, I editted the bullet point for cache plugin to say:
contrib/plugins/cache.c
instead of
contrib/plugins/cache
to match other plugins.
Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210810134844.166490-6-ma.mandourr@gmail.com>
Message-Id: <20211026102234.3961636-18-alex.bennee@linaro.org>
We no longer wish to have commands implemented in HMP only. All commands
should start with a QMP implementation and the HMP merely be a shim
around this. To reduce the burden of implementing QMP commands where
there is low expectation of machine usage, requirements for QAPI
modelling are relaxed provided the command is under the "x-" name
prefix.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This illustrates how to add a QMP command returning unstructured text,
following the guidelines added in the previous patch. The example uses
a simplified version of 'info roms'.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Traditionally we have required that newly added QMP commands will model
any returned data using fine grained QAPI types. This is good for
commands that are intended to be consumed by machines, where clear data
representation is very important. Commands that don't satisfy this have
generally been added to HMP only.
In effect the decision of whether to add a new command to QMP vs HMP has
been used as a proxy for the decision of whether the cost of designing a
fine grained QAPI type is justified by the potential benefits.
As a result the commands present in QMP and HMP are non-overlapping
sets, although HMP comamnds can be accessed indirectly via the QMP
command 'human-monitor-command'.
One of the downsides of 'human-monitor-command' is that the QEMU monitor
APIs remain tied into various internal parts of the QEMU code. For
example any exclusively HMP command will need to use 'monitor_printf'
to get data out. It would be desirable to be able to fully isolate the
monitor implementation from QEMU internals, however, this is only
possible if all commands are exclusively based on QAPI with direct
QMP exposure.
The way to achieve this desired end goal is to finese the requirements
for QMP command design. For cases where the output of a command is only
intended for human consumption, it is reasonable to want to simplify
the implementation by returning a plain string containing formatted
data instead of designing a fine grained QAPI data type. This can be
permitted if-and-only-if the command is exposed under the 'x-' name
prefix. This indicates that the command data format is liable to
future change and that it is not following QAPI design best practice.
The poster child example for this would be the 'info registers' HMP
command which returns printf formatted data representing CPU state.
This information varies enourmously across target architectures and
changes relatively frequently as new CPU features are implemented.
It is there as debugging data for human operators, and any machine
usage would treat it as an opaque blob. It is thus reasonable to
expose this in QMP as 'x-query-registers' returning a 'str' field.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Best practice is to use the 'hmp_handle_error' function, not
'monitor_printf' or 'error_report_err'. This ensures that the
message always gets an 'Error: ' prefix, distinguishing it
from normal command output.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The new headings reflect the intended structure of the document and will
better suit additions that follow.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The file already covers writing HMP commands, in addition to
the QMP commands, so it deserves a more general name.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
By convention, names starting with "x-" are experimental. The parts
of external interfaces so named may be withdrawn or changed
incompatibly in future releases.
The naming convention makes unstable interfaces easy to recognize.
Promoting something from experimental to stable involves a name
change. Client code needs to be updated. Occasionally bothersome.
Worse, the convention is not universally observed:
* QOM type "input-barrier" has properties "x-origin", "y-origin".
Looks accidental, but it's ABI since 4.2.
* QOM types "memory-backend-file", "memory-backend-memfd",
"memory-backend-ram", and "memory-backend-epc" have a property
"x-use-canonical-path-for-ramblock-id" that is documented to be
stable despite its name.
We could document these exceptions, but documentation helps only
humans. We want to recognize "unstable" in code, like "deprecated".
So support recognizing it the same way: introduce new special feature
flag "unstable". It will be treated specially by the QAPI generator,
like the existing feature flag "deprecated", and unlike regular
feature flags.
This commit updates documentation and prepares tests. The next commit
updates the QAPI schema. The remaining patches update the QAPI
generator and wire up -compat policy checking.
Management applications can then use query-qmp-schema and -compat to
manage or guard against use of unstable interfaces the same way as for
deprecated interfaces.
docs/devel/qapi-code-gen.txt no longer mandates the naming convention.
Using it anyway might help writers of programs that aren't
full-fledged management applications. Not using it can save us
bothersome renames. We'll see how that shakes out.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20211028102520.747396-2-armbru@redhat.com>
This is quite similar to commit 84ab008687 "qapi: Add feature flags to
struct members", only for enums instead of structs.
Special feature flag 'deprecated' is silently ignored there. This is
okay only because it will be implemented shortly.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20211025042405.3762351-3-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
The next commit will add feature flags to enum members. There's a
problem, though: query-qmp-schema shows an enum type's members as an
array of member names (SchemaInfoEnum member @values). If it showed
an array of objects with a name member, we could simply add more
members to these objects. Since it's just strings, we can't.
I can see three ways to correct this design mistake:
1. Do it the way we should have done it, plus compatibility goo.
We want a ['SchemaInfoEnumMember'] member in SchemaInfoEnum. Since
changing @values would be a compatibility break, add a new member
@members instead.
@values is now redundant. In my testing, output of
qemu-system-x86_64's query-qmp-schema grows by 11% (18.5KiB).
We can deprecate @values now and drop it later. This will break
outmoded clients. Well-behaved clients such as libvirt are
expected to break cleanly.
2. Like 1, but omit "boring" elements of @member, and empty @member.
@values does not become redundant. @members augments it. Somewhat
cumbersome, but output of query-qmp-schema grows only as we make
enum members non-boring.
There is nothing to deprecate here.
3. Versioned query-qmp-schema.
query-qmp-schema provides either @values or @members. The QMP
client can select which version it wants. There is no redundant
output.
We can deprecate old versions and eventually drop them. This will
break outmoded clients. Breaking cleanly is easier than for 1.
While 1 and 2 operate within the common rules for compatible
evolution apply (section "Compatibility considerations" in
docs/devel/qapi-code-gen.rst), 3 bypasses them. Attractive when
operating within the rules is just too awkward. Not the case here.
This commit implements 1. Libvirt developers prefer it.
Deprecate @values in favour of @members. Since query-qmp-schema
compatibility is pretty fundamental for management applications, an
extended grace period is advised.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Peter Krempa <pkrempa@redhat.com>
Message-Id: <20211025042405.3762351-2-armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Right now meson_options.txt lists about 90 options. Each option
needs code in configure to parse it and pass the option down to Meson as
a -D command-line argument; in addition the default must be duplicated
between configure and meson_options.txt. This series tries to remove
the code duplication by generating the case statement for those --enable
and --disable options, as well as the corresponding help text.
About 80% of the options can be handled completely by the new mechanism.
Eight meson options are not of the --enable/--disable kind. Six more need
to be parsed in configure for various reasons documented in the patch,
but they still have their help automatically generated.
The advantages are:
- less code in configure
- parsing and help is more consistent (for example --enable-blobs was
not supported)
- options are described entirely in one place, meson_options.txt.
This make it more attractive to use Meson options instead of
hand-crafted configure options and config-host.mak
A few options change name: --enable-tcmalloc and --enable-jemalloc
become --enable-malloc={tcmalloc,jemalloc}; --disable-blobs becomes
--disable-install-blobs; --enable-trace-backend becomes
--enable-trace-backends. However, the old names are allowed
for backwards compatibility.
Message-Id: <20211007130829.632254-19-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These functions are much closer to the softmmu helper
functions, in that they take the complete MemOpIdx,
and from that they may enforce required alignment.
The previous cpu_ldst.h functions did not have alignment info,
and so did not enforce it. Retain this by adding MO_UNALN to
the MemOp that we create in calling the new functions.
Note that we are not yet enforcing alignment for user-only,
but we now have the information with which to do so.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Clean up the heading levels to use === --- ~~~ ^^^ '''. Reorganize the
outline for the Avocado part, and always include headings for the
class names.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
