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Commit bc38feddeb ("io: fsync before closing a file channel") added a
fsync/fdatasync at the closing point of the QIOChannelFile to ensure
integrity of the migration stream in case of QEMU crash.
The decision to do the sync at qio_channel_close() was not the best
since that function runs in the main thread and the fsync can cause
QEMU to hang for several minutes, depending on the migration size and
disk speed.
To fix the hang, remove the fsync from qio_channel_file_close().
At this moment, the migration code is the only user of the fsync and
we're taking the tradeoff of not having a sync at all, leaving the
responsibility to the upper layers.
Fixes: bc38feddeb ("io: fsync before closing a file channel")
Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240305195629.9922-1-farosas@suse.de
Link: https://lore.kernel.org/r/20240305174332.2553-1-farosas@suse.de
[peterx: add more comment to the qio_channel_close()]
Signed-off-by: Peter Xu <peterx@redhat.com>
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Update bios-bits docs to add more details on why a pre-OS environment for
testing bioses is useful. Add author's FOSDEM talk link. Also improve the
formating of the document while at it.
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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QAPI patches patches for 2024-03-04
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# gpg: Signature made Mon 04 Mar 2024 06:24:34 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-2024-03-04' of https://repo.or.cz/qemu/armbru:
migration: simplify exec migration functions
qapi: New strv_from_str_list()
qapi: New QAPI_LIST_LENGTH()
docs/devel/writing-monitor-commands: Minor improvements
docs/devel/writing-monitor-commands: Repair a decade of rot
qapi: Reject "Returns" section when command doesn't return anything
qga/qapi-schema: Fix guest-set-memory-blocks documentation
qga/qapi-schema: Tweak documentation of fsfreeze commands
qga/qapi-schema: Clean up "Returns" sections
qga/qapi-schema: Delete useless "Returns" sections
qga/qapi-schema: Move error documentation to new "Errors" sections
qapi/yank: Tweak @yank's error description for consistency
qapi: Clean up "Returns" sections
qapi: Delete useless "Returns" sections
qapi: Move error documentation to new "Errors" sections
qapi: New documentation section tag "Errors"
qapi: Slightly clearer error message for invalid "Returns" section
qapi: Memorize since & returns sections
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Avoid "JSON" when talking about the QAPI schema syntax. Capitalize
QEMU. Don't claim all HMP commands live in monitor/hmp-cmds.c (this
was never true). Fix punctuation and drop inappropriate "the" here
and there.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227115617.237875-3-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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The tutorial doesn't match reality since at least 2013. Repairing it
involves fixing the following issues:
* Update for commit 6d327171551 (aio / timers: Remove alarm timers):
replace the broken examples. Instead of having one for returning a
struct and another for returning a list of structs, do just one for
the latter. This resolves the FIXME added in commit
e218052f928 (aio / timers: De-document -clock) back in 2014.
* Update for commit 895a2a80e0e (qapi: Use 'struct' instead of 'type'
in schema).
* Update for commit 3313b6124b5 (qapi: add qapi2texi script): add
required documentation to the schema snippets, and drop section
"Command Documentation".
* Update for commit a3c45b3e629 (qapi: New special feature flag
"unstable"): supply the required feature, deemphasize the x- prefix.
* Update for commit dd98234c059 (qapi: introduce x-query-roms QMP
command): rephrase from "add new command" to "examine existing
command".
* Update for commit 9492718b7c0 (qapi misc: Elide redundant has_FOO in
generated C): hello-world's message argument no longer comes with a
has_message, add a second argument that does.
* Update for moved and renamed files.
While there, update QMP version output to current output.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227115617.237875-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[Whitespace tidied up, typo fixed]
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We use section "Returns" for documenting both success and error
response of commands.
I intend to generate better command success response documentation.
Easier when "Returns" documents just he success response.
Create new section tag "Errors". The next two commits will move error
response documentation from "Returns" sections to "Errors" sections.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240227113921.236097-4-armbru@redhat.com>
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Add a new migration capability 'mapped-ram'.
The core of the feature is to ensure that RAM pages are mapped
directly to offsets in the resulting migration file instead of being
streamed at arbitrary points.
The reasons why we'd want such behavior are:
- The resulting file will have a bounded size, since pages which are
dirtied multiple times will always go to a fixed location in the
file, rather than constantly being added to a sequential
stream. This eliminates cases where a VM with, say, 1G of RAM can
result in a migration file that's 10s of GBs, provided that the
workload constantly redirties memory.
- It paves the way to implement O_DIRECT-enabled save/restore of the
migration stream as the pages are ensured to be written at aligned
offsets.
- It allows the usage of multifd so we can write RAM pages to the
migration file in parallel.
For now, enabling the capability has no effect. The next couple of
patches implement the core functionality.
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Link: https://lore.kernel.org/r/20240229153017.2221-8-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
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into staging
Migration pull request
- Fabiano's fixed-ram patches (1-5 only)
- Peter's cleanups on multifd tls IOC referencing
- Steve's cpr patches for vfio (migration patches only)
- Fabiano's fix on mbps stats racing with COMPLETE state
- Fabiano's fix on return path thread hang
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# gpg: Signature made Wed 28 Feb 2024 05:11:10 GMT
# gpg: using EDDSA key B9184DC20CC457DACF7DD1A93B5FCCCDF3ABD706
# gpg: issuer "peterx@redhat.com"
# gpg: Good signature from "Peter Xu <xzpeter@gmail.com>" [marginal]
# gpg: aka "Peter Xu <peterx@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: B918 4DC2 0CC4 57DA CF7D D1A9 3B5F CCCD F3AB D706
* tag 'migration-next-pull-request' of https://gitlab.com/peterx/qemu: (25 commits)
migration: Use migrate_has_error() in close_return_path_on_source()
migration: Join the return path thread before releasing to_dst_file
migration: Fix qmp_query_migrate mbps value
migration: options incompatible with cpr
migration: update cpr-reboot description
migration: stop vm for cpr
migration: notifier error checking
migration: refactor migrate_fd_connect failures
migration: per-mode notifiers
migration: MigrationNotifyFunc
migration: remove postcopy_after_devices
migration: MigrationEvent for notifiers
migration: convert to NotifierWithReturn
migration: remove error from notifier data
notify: pass error to notifier with return
migration/multifd: Drop unnecessary helper to destroy IOC
migration/multifd: Cleanup outgoing_args in state destroy
migration/multifd: Make multifd_channel_connect() return void
migration/multifd: Drop registered_yank
migration/multifd: Cleanup TLS iochannel referencing
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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When scoreboards need to be reallocated.
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240213094009.150349-8-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-30-alex.bennee@linaro.org>
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While we attempt to hide implementation details from the plugin we
shouldn't be totally obtuse. Let the user know what they can and can't
expect with the various instrumentation options.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-29-alex.bennee@linaro.org>
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This makes them a bit more visible in the TCG emulation menu rather
than hiding them away bellow the ToC limit.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-28-alex.bennee@linaro.org>
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With the new plugin register API we can now track changes to register
values. Currently the implementation is fairly dumb which will slow
down if a large number of register values are being tracked. This
could be improved by only instrumenting instructions which mention
registers we are interested in tracking.
Example usage:
./qemu-aarch64 -D plugin.log -d plugin \
-cpu max,sve256=on \
-plugin contrib/plugins/libexeclog.so,reg=sp,reg=z\* \
./tests/tcg/aarch64-linux-user/sha512-sve
will display in the execlog any changes to the stack pointer (sp) and
the SVE Z registers.
As testing registers every instruction will be quite a heavy operation
there is an additional flag which attempts to optimise the register
tracking by only instrumenting instructions which are likely to change
its value. This relies on the QEMU disassembler showing up the register
names in disassembly so is an explicit opt-in.
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Cc: Akihiko Odaki <akihiko.odaki@daynix.com>
Based-On: <20231025093128.33116-19-akihiko.odaki@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-27-alex.bennee@linaro.org>
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When adding the support for file migration with the file: transport,
we missed adding documentation for it.
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240220224138.24759-2-farosas@suse.de
Signed-off-by: Peter Xu <peterx@redhat.com>
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Now that system reset uses a three-phase-reset, update the reset
documentation to include a section describing how this works.
Include documentation of the current major beartrap in reset, which
is that only devices on the qbus tree will get automatically reset.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20240220160622.114437-11-peter.maydell@linaro.org
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
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We have an OBJECT_DEFINE_TYPE_EXTENDED macro, plus several variations
on it, which emits the boilerplate for the TypeInfo and ensures it is
registered with the type system. However, all the existing macros
insist that the type being defined has its own FooClass struct, so
they aren't useful for the common case of a simple leaf class which
doesn't have any new methods or any other need for its own class
struct (that is, for the kind of type that OBJECT_DECLARE_SIMPLE_TYPE
declares).
Pull the actual implementation of OBJECT_DEFINE_TYPE_EXTENDED out
into a new DO_OBJECT_DEFINE_TYPE_EXTENDED which parameterizes the
value we use for the class_size field. This lets us add a new
OBJECT_DEFINE_SIMPLE_TYPE which does the same job as the various
existing OBJECT_DEFINE_*_TYPE_* family macros for this kind of simple
type, and the variant OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES for
when the type will implement some interfaces.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240220160622.114437-5-peter.maydell@linaro.org
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
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Putting a blank line before section tags and 'Features:' is good,
existing practice. Enforce it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240216145841.2099240-12-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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By convention, we indent the second and subsequent lines of
descriptions and tagged sections, except for examples.
Turn this into a hard rule, and apply it to examples, too.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240216145841.2099240-11-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[Straightforward conflicts in qapi/migration.json resolved]
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The ppc64 and s390x tests were first marked skipIf GITLAB_CI by commit
c0c8687ef0f ("tests/avocado: disable BootLinuxPPC64 test in CI"), and
commit 0f26d94ec9e ("tests/acceptance: skip s390x_ccw_vrtio_tcg on
GitLab") due to being very heavy-weight for gitlab CI.
Commit 9b45cc99318 ("docs/devel: rationalise unstable gitlab tests under
FLAKY_TESTS") changed this to being flaky but it isn't really, it just
had a long runtime.
So take the SPEED=slow variable from qtests and introduce it to avocado,
and make these tests require it.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
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Correct typos automatically found with the `typos` tool
<https://crates.io/crates/typos>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
(mjt: trivial fixup)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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into staging
virtio,pc,pci: features, cleanups, fixes
vhost-user-snd support
x2APIC mode with TCG support
CXL update to r3.1
fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (60 commits)
MAINTAINERS: Switch to my Enfabrica email
virtio-gpu-rutabaga.c: override resource_destroy method
virtio-gpu.c: add resource_destroy class method
hw/display/virtio-gpu.c: use reset_bh class method
hw/smbios: Fix port connector option validation
hw/smbios: Fix OEM strings table option validation
virtio-gpu: Correct virgl_renderer_resource_get_info() error check
hw/cxl: Standardize all references on CXL r3.1 and minor updates
hw/cxl: Update mailbox status registers.
hw/cxl: Update RAS Capability Definitions for version 3.
hw/cxl: Update link register definitions.
hw/cxl: Update HDM Decoder capability to version 3
tests/acpi: Update DSDT.cxl to reflect change _STA return value.
hw/i386: Fix _STA return value for ACPI0017
tests/acpi: Allow update of DSDT.cxl
hw/mem/cxl_type3: Fix potential divide by zero reported by coverity
hw/cxl: Pass NULL for a NULL MemoryRegionOps
hw/cxl: Pass CXLComponentState to cache_mem_ops
hw/cxl/device: read from register values in mdev_reg_read()
hw/cxl/mbox: Remove dead code
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Some SuperI/O devices such as the VIA south bridges or the PC87312 controller
allow to enable or disable their SuperI/O functions. Add a convenience function
for implementing this in the VIA south bridges.
The naming of the functions is inspired by its memory_region_set_enabled()
pendant.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-7-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Some SuperI/O devices such as the VIA south bridges or the PC87312 controller
are able to relocate their SuperI/O functions. Add a convenience function for
implementing this in the VIA south bridges.
This convenience function relies on previous simplifications in exec/ioport
which avoids some duplicate synchronization of I/O port base addresses. The
naming of the function is inspired by its memory_region_set_address() pendant.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-6-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The QAPI generator forces you to document your stuff. Except for
command arguments, event data, and members of enum and object types:
these the generator silently "documents" as "Not documented".
We can't require proper documentation there without first fixing all
the offenders. We've always had too many offenders to pull that off.
Right now, we have more than 500. Worse, we seem to fix old ones no
faster than we add new ones: in the past year, we fixed 22 ones, but
added 26 new ones.
To help arrest the backsliding, make missing documentation an error
unless the command, type, or event is in listed in new pragma
documentation-exceptions.
List all the current offenders: 117 commands and types in qapi/, and 9
in qga/.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-7-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Missed in commit a937b6aa739 (qapi: Reformat doc comments to conform
to current conventions).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-3-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Missed in commit 9bc6e893b72 (qapi: Normalize version references x.y.0
to just x.y).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-2-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Add the enumerators, adjust the helpers to match, and dump.
Not supported anywhere else just yet.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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We can't just embed labels directly into files like qemu-options.hx which
are included from multiple top-level rST files, because Sphinx sees the
labels as duplicate: https://github.com/sphinx-doc/sphinx/issues/9707
So add an optional argument to the SRST directive which causes a label
of the form '.. _DOCNAME-HXFILE-LABEL:' to be emitted, where 'DOCNAME'
is the name of the top level rST file, 'HXFILE' is the filename of the
.hx file, and 'LABEL' is the text provided within the 'SRST()' directive.
Using the DOCNAME of the top-level rST document means that it is unique
even when the .hx file is included from two different documents, as is
the case for qemu-options.hx
Now where the Xen PV documentation refers to the documentation for the
-initrd command line option, it can emit a link directly to it as
'<system/invocation-qemu-options-initrd>'.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240130190348.682912-1-dwmw2@infradead.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Conversion of docs/devel/qapi-code-gen.txt to ReST left several
dangling references behind. Fix them to point to
docs/devel/qapi-code-gen.rst.
Fixes: f7aa076dbdfc (docs: convert qapi-code-gen.txt to ReST)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-4-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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Deletion of docs/interop/qmp-intro.txt left two dangling references
behind. Replace them by references to docs/interop/qmp-spec.rst.
Fixes: 0ec4468f233c (docs/interop: Delete qmp-intro.txt)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-3-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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We reserved type names ending with 'Kind' because a simple union
'SomeSimpleUnion' generated both a struct type SomeSimpleUnion and an
enum type SomeSimpleUnionKind. Gone since commit 4e99f4b12c0 (qapi:
Drop simple unions). The commit neglected to update the documentation
not to reserve type names ending with 'Kind'. Do that now.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20231221145727.835905-1-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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https://git.linaro.org/people/pmaydell/qemu-arm into staging
target-arm queue:
* docs/devel/docs: Document .hx file syntax
* arm_pamax() no longer needs to do feature propagation
* docs/system/arm/virt.rst: Improve 'highmem' option docs
* STM32L4x5 Implement SYSCFG and EXTI devices
* hw/timer: fix systick trace message
* hw/arm/virt: Consolidate valid CPU types
* load_elf: fix iterator's type for elf file processing
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# gpg: Signature made Thu 18 Jan 2024 12:42:54 GMT
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# gpg: aka "Peter Maydell <peter@archaic.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* tag 'pull-target-arm-20240118' of https://git.linaro.org/people/pmaydell/qemu-arm:
load_elf: fix iterator's type for elf file processing
hw/arm/virt: Consolidate valid CPU types
hw/timer: fix systick trace message
tests/qtest: Add STM32L4x5 SYSCFG QTest testcase
hw/arm: Connect STM32L4x5 SYSCFG to STM32L4x5 SoC
hw/misc: Implement STM32L4x5 SYSCFG
tests/qtest: Add STM32L4x5 EXTI QTest testcase
hw/arm: Connect STM32L4x5 EXTI to STM32L4x5 SoC
hw/misc: Implement STM32L4x5 EXTI
docs/system/arm/virt.rst: Improve 'highmem' option docs
target/arm: arm_pamax() no longer needs to do feature propagation
docs/devel/docs: Document .hx file syntax
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Move it one layer down, so taking Virtio-migration as a feature for
migration.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-11-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Move it one layer down, so taking VFIO-migration as a feature for
migration.
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-10-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Reorganize the page, moving things around, and add a few
headlines ("Postcopy internals", "Postcopy features") to cover sub-areas.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-9-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Split that into a separate file, put under "features".
Cc: Yong Huang <yong.huang@smartx.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-8-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Split postcopy into a separate file. Introduce a head page "features.rst"
to keep all the features on top of migration framework.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-7-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Move the two sections into a separate file called "best-practices.rst".
Add the entry into index.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-6-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Split the section from main.rst into a separate file. Reference it in the
index.rst.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-5-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Convert the plain old .txt into .rst, add it into migration/index.rst.
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-4-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Create an index page for migration module. Move VFIO migration there too.
A trivial touch-up on the title to use lower case there.
Since then we'll have "migration" as the top title, make the main doc file
renamed to "migration framework".
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-3-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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Migration documentation is growing into a single file too large. Create a
sub-directory for it for a split.
We also already have separate vfio/virtio documentations, move it all over
into the directory.
Note that the virtio one is still not yet converted to rST. That is a job
for later.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/r/20240109064628.595453-2-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
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We don't currently document the syntax of .hx files anywhere
except in a few comments at the top of individual .hx files.
We don't even have somewhere in the developer docs where we
could do this.
Add a new files docs/devel/docs.rst which can be a place to
document how our docs build process works. For the moment,
put in only a brief introductory paragraph and the documentation
of the .hx files. We could later add to this file by for
example describing how the QAPI-schema-to-docs process works,
or anything else that developers might need to know about
how to add documentation.
Make the .hx files refer to this doc file, and clean
up their header comments to be more accurate for the
usage in each file and less cut-n-pasted.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Message-id: 20231212162313.1742462-1-peter.maydell@linaro.org
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The term "QEMU global mutex" is identical to the more widely used Big
QEMU Lock ("BQL"). Update the code comments and documentation to use
"BQL" instead of "QEMU global mutex".
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL)
in their names. Update the code comments to use "BQL" instead of
"iothread lock".
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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* configure: use a native non-cross compiler for linux-user
* meson: cleanups
* target/i386: miscellaneous cleanups and optimizations
* target/i386: implement CMPccXADD
* target/i386: the sgx_epc_get_section stub is reachable
* esp: check for NULL result from scsi_device_find()
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# 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: (46 commits)
meson.build: report graphics backends separately
configure, meson: rename targetos to host_os
meson: rename config_all
meson: remove CONFIG_ALL
meson: remove config_targetos
meson: remove CONFIG_POSIX and CONFIG_WIN32 from config_targetos
meson: remove OS definitions from config_targetos
meson: always probe u2f and canokey if the option is enabled
meson: move subdirs to "Collect sources" section
meson: move config-host.h definitions together
meson: move CFI detection code with other compiler flags
meson: keep subprojects together
meson: move accelerator dependency checks together
meson: move option validation together
meson: move program checks together
meson: add more sections to main meson.build
configure: unify again the case arms in probe_target_compiler
configure: remove unnecessary subshell
Makefile: clean qemu-iotests output
meson: use version_compare() to compare version
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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This variable is about the host OS, not the target. It is used a lot
more since the Meson conversion, but the original sin dates back to 2003.
Time to fix it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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CONFIG_ALL is tricky to use and was ported over to Meson from the
recursive processing of Makefile variables. Meson sourcesets
however have all_sources() and all_dependencies() methods that
remove the need for it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231221031652.119827-72-richard.henderson@linaro.org>
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Encourage the use of locking primitives and stop mentioning the
AioContext lock since it is being removed.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-ID: <20231205182011.1976568-12-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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