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>
These are unused since commit 075e52b816 ("s390x/cpumodel:
we are always in zarchitecture mode") and it's unlikely that we
will ever need them again. So let's simply remove them now.
Message-Id: <20211015124219.1330830-1-thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Generally, the traceback for a connection failure is uninteresting and
all we need to know is that the connection attempt failed.
Reduce the verbosity in these cases, except when debugging.
Signed-off-by: John Snow <jsnow@redhat.com>
Reported-by: Thomas Huth <thuth@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20211111143719.2162525-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
These errors are expected, so they shouldn't clog up terminal output. In
the event that they're *not* expected, we'll be seeing an awful lot more
output concerning the nature of the failure.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20211111143719.2162525-5-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
We don't need to handle KeyboardInterruptError specifically; we can
instead tighten the scope of the broad Exception handlers to only catch
"Exception", which has the effect of allowing all BaseException classes
that do not inherit from Exception to be raised through.
KeyboardInterruptError and a few other important ones are
BaseExceptions, so this does the same thing with less code.
Signed-off-by: John Snow <jsnow@redhat.com>
Reported-by: Thomas Huth <thuth@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20211111143719.2162525-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
When ConnectError is used to wrap an Exception that was initialized
without an error message, we are treated to a traceback with a rubbish
line like this:
... ConnectError: Failed to establish session:
Correct this to use the name of an exception as a fallback message:
... ConnectError: Failed to establish session: EOFError
Better!
Signed-off-by: John Snow <jsnow@redhat.com>
Reported-by: Thomas Huth <thuth@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20211111143719.2162525-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
If we receive ConnectionResetError (ECONNRESET) while attempting to
perform capabilities negotiation -- prior to the establishment of the
async reader/writer tasks -- the disconnect function is not aware that
we are in an error pathway.
As a result, when attempting to close the StreamWriter, we'll see the
same ConnectionResetError that caused us to initiate a disconnect in the
first place, which will cause the disconnect task itself to fail, which
emits a CRITICAL logging event.
I still don't know if there's a smarter way to check to see if an
exception received at this point is "the same" exception as the one that
caused the initial disconnect, but for now the problem can be avoided by
improving the error pathway detection in the exit path.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-id: 20211111143719.2162525-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
- force NOUSER for base docker images
- don't run TCG VM tests by default
- remove useless meson test
- add Centos 8 custom runner
- split up custom-runners to individual files
- skip cirrus checks on master/stable branches
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Merge tag 'pull-for-6.2-161121-1' of https://github.com/stsquad/qemu into staging
Misc build and test fixes:
- force NOUSER for base docker images
- don't run TCG VM tests by default
- remove useless meson test
- add Centos 8 custom runner
- split up custom-runners to individual files
- skip cirrus checks on master/stable branches
# gpg: Signature made Tue 16 Nov 2021 05:22:09 PM CET
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
* tag 'pull-for-6.2-161121-1' of https://github.com/stsquad/qemu:
gitlab: skip cirrus jobs on master and stable branches
gitlab-ci: Split custom-runners.yml in one file per runner
Jobs based on custom runners: add CentOS Stream 8
meson: remove useless libdl test
tests/vm: don't build using TCG by default
tests/vm: sort the special variable list
tests/docker: force NOUSER=1 for base images
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
On the primary QEMU repository we want the CI jobs to run on the staging
branch as a gating CI test.
Cirrus CI has very limited job concurrency, so if there are too many
jobs triggered they'll queue up and hit the GitLab CI job timeout before
they complete on Cirrus.
If we let Cirrus jobs run again on the master branch immediately after
merging from staging, that just increases the chances jobs will get
queued and subsequently timeout.
The same applies for merges to the stable branches.
User forks meanwhile should be allowed to run Cirrus CI jobs freely.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20211116112757.1909176-1-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
To ease maintenance, add the custom-runners/ directory and
split custom-runners.yml in 3 files, all included by the
current custom-runners.yml:
- ubuntu-18.04-s390x.yml
- ubuntu-20.04-aarch64.yml
- centos-stream-8-x86_64.yml
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20211115095608.2436223-1-philmd@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20211115142915.3797652-7-alex.bennee@linaro.org>
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>
dlopen is never used after it is sought via cc.find_library, because
plugins use gmodule instead; remove the test.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211110092454.30916-1-pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211115142915.3797652-5-alex.bennee@linaro.org>
While it is useful to run these images using TCG their performance
will not be anything like the native guests. Don't do it by default.
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/393
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211115142915.3797652-4-alex.bennee@linaro.org>
Making the list alphabetical makes it easier to find the config option
you are looking for.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211115142915.3797652-3-alex.bennee@linaro.org>
As base images are often used to build further images like toolchains
ensure we don't add the local user by accident. The local user should
only exist on local images and not anything that gets pushed up to the
public registry.
Reported-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20211115142915.3797652-2-alex.bennee@linaro.org>
Under SELinux, Unix domain sockets have two labels. One is on the
disk and can be set with commands such as chcon(1). There is a
different label stored in memory (called the process label). This can
only be set by the process creating the socket. When using SELinux +
SVirt and wanting qemu to be able to connect to a qemu-nbd instance,
you must set both labels correctly first.
For qemu-nbd the options to set the second label are awkward. You can
create the socket in a wrapper program and then exec into qemu-nbd.
Or you could try something with LD_PRELOAD.
This commit adds the ability to set the label straightforwardly on the
command line, via the new --selinux-label flag. (The name of the flag
is the same as the equivalent nbdkit option.)
A worked example showing how to use the new option can be found in
this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1984938
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1984938
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[eblake: rebase to configure changes, reject --selinux-label if it is
not compiled in or not used on a Unix socket]
Note that we may relax some of these restrictions at a later date,
such as making it possible to label a TCP socket, although it may be
smarter to do so as a generic QMP action rather than more one-off
command lines in qemu-nbd.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20211115202944.615966-1-eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[eblake: adjust meson output as suggested by thuth]
Signed-off-by: Eric Blake <eblake@redhat.com>
clang's sanitizer is picky: memset(NULL, x, 0) is technically
undefined behavior, even though no sane implementation of memset()
deferences the NULL. Caught by the nbd-qemu-allocation iotest.
The alternative to checking before each memset is to instead force an
allocation of 1 element instead of g_new0(type, 0)'s behavior of
returning NULL for a 0-length array.
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Fixes: 3b1f244c59 (nbd: Allow export of multiple bitmaps for one device)
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20211115223943.626416-1-eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
- Fixes to image streaming job and block layer reconfiguration to make
iotest 030 pass again
- docs: Deprecate incorrectly typed device_add arguments
- file-posix: Fix alignment after reopen changing O_DIRECT
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Merge tag 'pull-block-2021-11-16' of https://gitlab.com/hreitz/qemu into staging
Block patches for 6.2.0-rc1:
- Fixes to image streaming job and block layer reconfiguration to make
iotest 030 pass again
- docs: Deprecate incorrectly typed device_add arguments
- file-posix: Fix alignment after reopen changing O_DIRECT
# gpg: Signature made Tue 16 Nov 2021 01:57:03 PM CET
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@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: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF
* tag 'pull-block-2021-11-16' of https://gitlab.com/hreitz/qemu:
file-posix: Fix alignment after reopen changing O_DIRECT
softmmu/qdev-monitor: fix use-after-free in qdev_set_id()
docs: Deprecate incorrectly typed device_add arguments
iotests/030: Unthrottle parallel jobs in reverse
block: Let replace_child_noperm free children
block: Let replace_child_tran keep indirect pointer
transactions: Invoke clean() after everything else
block: Restructure remove_file_or_backing_child()
block: Pass BdrvChild ** to replace_child_noperm
block: Drop detached child from ignore list
block: Unite remove_empty_child and child_free
block: Manipulate children list in .attach/.detach
stream: Traverse graph after modification
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
- Rework SMP parsing unit test to work on WinGW:
https://github.com/qemu/qemu/runs/4078386652
This fixes:
Test smp_parse failed!
Expected error report: Invalid SMP CPUs 1. The min CPUs supported by machine '(null)' is 2
Output error report: Invalid SMP CPUs 1. The min CPUs supported by machine '(NULL)' is 2
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Merge tag 'machine-core-20211115' of https://github.com/philmd/qemu into staging
Machine core patches
- Rework SMP parsing unit test to work on WinGW:
https://github.com/qemu/qemu/runs/4078386652
This fixes:
Test smp_parse failed!
Expected error report: Invalid SMP CPUs 1. The min CPUs supported by machine '(null)' is 2
Output error report: Invalid SMP CPUs 1. The min CPUs supported by machine '(NULL)' is 2
# gpg: Signature made Mon 15 Nov 2021 11:46:36 PM CET
# gpg: using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
* tag 'machine-core-20211115' of https://github.com/philmd/qemu:
tests/unit/test-smp-parse: Explicit MachineClass name
tests/unit/test-smp-parse: QOM'ify smp_machine_class_init()
tests/unit/test-smp-parse: Restore MachineClass fields after modifying
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
At the end of a reopen, we already call bdrv_refresh_limits(), which
should update bs->request_alignment according to the new file
descriptor. However, raw_probe_alignment() relies on s->needs_alignment
and just uses 1 if it isn't set. We neglected to update this field, so
starting with cache=writeback and then reopening with cache=none means
that we get an incorrect bs->request_alignment == 1 and unaligned
requests fail instead of being automatically aligned.
Fix this by recalculating s->needs_alignment in raw_refresh_limits()
before calling raw_probe_alignment().
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211104113109.56336-1-kwolf@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-13-kwolf@redhat.com>
[hreitz: Fix iotest 142 for block sizes greater than 512 by operating on
a file with a size of 1 MB]
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211116101431.105252-1-hreitz@redhat.com>
Reported by Coverity (CID 1465222).
Fixes: 4a1d937796 ("softmmu/qdev-monitor: add error handling in qdev_set_id")
Cc: Damien Hedde <damien.hedde@greensocs.com>
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20211102163342.31162-1-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-14-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
While introducing a non-QemuOpts code path for device creation for JSON
-device, we noticed that QMP device_add doesn't check its input
correctly (accepting arguments that should have been rejected), and that
users may be relying on this behaviour (libvirt did until it was fixed
recently).
Let's use a deprecation period before we fix this bug in QEMU to avoid
nasty surprises for users.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211111143530.18985-1-kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-12-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
See the comment for why this is necessary.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-11-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-11-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
In most of the block layer, especially when traversing down from other
BlockDriverStates, we assume that BdrvChild.bs can never be NULL. When
it becomes NULL, it is expected that the corresponding BdrvChild pointer
also becomes NULL and the BdrvChild object is freed.
Therefore, once bdrv_replace_child_noperm() sets the BdrvChild.bs
pointer to NULL, it should also immediately set the corresponding
BdrvChild pointer (like bs->file or bs->backing) to NULL.
In that context, it also makes sense for this function to free the
child. Sometimes we cannot do so, though, because it is called in a
transactional context where the caller might still want to reinstate the
child in the abort branch (and free it only on commit), so this behavior
has to remain optional.
In bdrv_replace_child_tran()'s abort handler, we now rely on the fact
that the BdrvChild passed to bdrv_replace_child_tran() must have had a
non-NULL .bs pointer initially. Make a note of that and assert it.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-10-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-10-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
As of a future commit, bdrv_replace_child_noperm() will clear the
indirect BdrvChild pointer passed to it if the new child BDS is NULL.
bdrv_replace_child_tran() will want to let it do that, but revert this
change in its abort handler. For that, we need to have it receive a
BdrvChild ** pointer, too, and keep it stored in the
BdrvReplaceChildState object that we attach to the transaction.
Note that we do not need to store it in the BdrvReplaceChildState when
new_bs is not NULL, because then there is nothing to revert. This is
important so that bdrv_replace_node_noperm() can pass a pointer to a
loop-local variable to bdrv_replace_child_tran() without worrying that
this pointer will outlive one loop iteration.
(Of course, for that to work, bdrv_replace_node_noperm() and in turn
bdrv_replace_node() and its relatives may not be called with a NULL @to
node. Luckily, they already are not, but now we should assert this.)
bdrv_remove_file_or_backing_child() on the other hand needs to ensure
that the indirect pointer it passes will stay valid for the duration of
the transaction. Ensure this by keeping a strong reference to the BDS
whose &bs->backing or &bs->file it passes to bdrv_replace_child_tran(),
and giving up that reference only in the transaction .clean() handler.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-9-hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-9-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Invoke the transaction drivers' .clean() methods only after all
.commit() or .abort() handlers are done.
This makes it easier to have nested transactions where the top-level
transactions pass objects to lower transactions that the latter can
still use throughout their commit/abort phases, while the top-level
transaction keeps a reference that is released in its .clean() method.
(Before this commit, that is also possible, but the top-level
transaction would need to take care to invoke tran_add() before the
lower-level transaction does. This commit makes the ordering
irrelevant, which is just a bit nicer.)
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-8-hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-8-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
As of a future patch, bdrv_replace_child_tran() will take a BdrvChild **
pointer. Prepare for that by getting such a pointer and using it where
applicable, and (dereferenced) as a parameter for
bdrv_replace_child_tran().
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-7-hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-7-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
bdrv_replace_child_noperm() modifies BdrvChild.bs, and can potentially
set it to NULL. That is dangerous, because BDS parents generally assume
that their children's .bs pointer is never NULL. We therefore want to
let bdrv_replace_child_noperm() set the corresponding BdrvChild pointer
to NULL, too.
This patch lays the foundation for it by passing a BdrvChild ** pointer
to bdrv_replace_child_noperm() so that it can later use it to NULL the
BdrvChild pointer immediately after setting BdrvChild.bs to NULL.
(We will still need to undertake some intermediate steps, though.)
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20211111120829.81329-6-hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-6-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
bdrv_attach_child_common_abort() restores the parent's AioContext. To
do so, the child (which was supposed to be attached, but is now detached
again by this abort handler) is added to the ignore list for the
AioContext changing functions.
However, since we modify a BDS's children list in the BdrvChildClass's
.attach and .detach handlers, the child is already effectively detached
from the parent by this point. We do not need to put it into the ignore
list.
Use this opportunity to clean up the empty line structure: Keep setting
the ignore list, invoking the AioContext function, and freeing the
ignore list in blocks separated by empty lines.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211111120829.81329-5-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-5-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Now that bdrv_remove_empty_child() no longer removes the child from the
parent's children list but only checks that it is not in such a list, it
is only a wrapper around bdrv_child_free() that checks that the child is
empty and unused. That should apply to all children that we free, so
put those checks into bdrv_child_free() and drop
bdrv_remove_empty_child().
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211111120829.81329-4-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-4-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
The children list is specific to BDS parents. We should not modify it
in the general children modification code, but let BDS parents deal with
it in their .attach() and .detach() methods.
This also has the advantage that a BdrvChild is removed from the
children list before its .bs pointer can become NULL. BDS parents
generally assume that their children's .bs pointer is never NULL, so
this is actually a bug fix.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211111120829.81329-3-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-3-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
bdrv_cor_filter_drop() modifies the block graph. That means that other
parties can also modify the block graph before it returns. Therefore,
we cannot assume that the result of a graph traversal we did before
remains valid afterwards.
We should thus fetch `base` and `unfiltered_base` afterwards instead of
before.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20211111120829.81329-2-hreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20211115145409.176785-2-kwolf@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
pci power management fixes
acpi hotplug fixes
misc other fixes
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
pci,pc,virtio: bugfixes
pci power management fixes
acpi hotplug fixes
misc other fixes
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon 15 Nov 2021 05:15:09 PM CET
# 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]
* tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu:
pcie: expire pending delete
pcie: fast unplug when slot power is off
pcie: factor out pcie_cap_slot_unplug()
pcie: add power indicator blink check
pcie: implement slot power control for pcie root ports
pci: implement power state
vdpa: Check for existence of opts.vhostdev
vdpa: Replace qemu_open_old by qemu_open at
virtio: use virtio accessor to access packed event
virtio: use virtio accessor to access packed descriptor flags
tests: bios-tables-test update expected blobs
hw/i386/acpi-build: Deny control on PCIe Native Hot-plug in _OSC
bios-tables-test: Allow changes in DSDT ACPI tables
hw/acpi/ich9: Add compat prop to keep HPC bit set for 6.1 machine type
pcie: rename 'native-hotplug' to 'x-native-hotplug'
hw/mem/pc-dimm: Restrict NUMA-specific code to NUMA machines
vhost: Fix last vq queue index of devices with no cvq
vhost: Rename last_index to vq_index_end
softmmu/qdev-monitor: fix use-after-free in qdev_set_id()
net/vhost-vdpa: fix memory leak in vhost_vdpa_get_max_queue_pairs()
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
If the MachineClass::name pointer is not explicitly set, it is NULL.
Per the C standard, passing a NULL pointer to printf "%s" format is
undefined. Some implementations display it as 'NULL', other as 'null'.
Since we are comparing the formatted output, we need a stable value.
The easiest is to explicit a machine name string.
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211115145900.2531865-4-philmd@redhat.com>
smp_machine_class_init() is the actual TypeInfo::class_init().
Declare it as such in smp_machine_info, and avoid to call it
manually in each test. Move smp_machine_info definition just
before we register the type to avoid a forward declaration.
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211115145900.2531865-3-philmd@redhat.com>
There is a single MachineClass object, registered with
type_register_static(&smp_machine_info). Since the same
object is used multiple times (an MachineState object
is instantiated in both test_generic and test_with_dies),
we should restore its internal state after modifying for
the test purpose.
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Tested-by: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211115145900.2531865-2-philmd@redhat.com>
The PL031 currently is not able to report guest RTC change to the QMP
monitor as opposed to mc146818 or spapr RTCs. This patch adds the call
to qapi_event_send_rtc_change() when the Load Register is written. The
value which is reported corresponds to the difference between the guest
reference time and the reference time kept in softmmu/rtc.c.
For instance adding 20s to the guest RTC value will report 20. Adding
an extra 20s to the guest RTC value will report 20 + 20 = 40.
The inclusion of qapi/qapi-types-misc-target.h in hw/rtl/pl031.c
require to compile the PL031 with specific_ss.add() to avoid
./qapi/qapi-types-misc-target.h:18:13: error: attempt to use poisoned
"TARGET_<ARCH>".
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20210920122535.269988-1-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Our GICv3 QOM interface includes an array property
redist-region-count which allows board models to specify that the
registributor registers are not in a single contiguous range, but
split into multiple pieces. We implemented this for KVM, but
currently the TCG GICv3 model insists that there is only one region.
You can see the limit being hit with a setup like:
qemu-system-aarch64 -machine virt,gic-version=3 -smp 124
Add support for split regions to the TCG GICv3. To do this we switch
from allocating a simple array of MemoryRegions to an array of
GICv3RedistRegion structs so that we can use the GICv3RedistRegion as
the opaque pointer in the MemoryRegion read/write callbacks. Each
GICv3RedistRegion contains the MemoryRegion, a backpointer allowing
the read/write callback to get hold of the GICv3State, and an index
which allows us to calculate which CPU's redistributor is being
accessed.
Note that arm_gicv3_kvm always passes in NULL as the ops argument
to gicv3_init_irqs_and_mmio(), so the only MemoryRegion read/write
callbacks we need to update to handle this new scheme are the
gicv3_redist_read/write functions used by the emulated GICv3.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The 'Last' bit in the GICR_TYPER GICv3 redistributor register is
supposed to be set to 1 if this is the last redistributor in a series
of contiguous redistributor pages. Currently we set Last only for
the redistributor for CPU (num_cpu - 1). This only works if there is
a single redistributor region; if there are multiple redistributor
regions then we need to set the Last bit for the last redistributor
in each region.
This doesn't cause any problems currently because only the KVM GICv3
supports multiple redistributor regions, and it ignores the value in
GICv3State::gicr_typer. But we need to fix this before we can enable
support for multiple regions in the emulated GICv3.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The GICv3 devices have an array property redist-region-count.
Currently we check this for errors (bad values) in
gicv3_init_irqs_and_mmio(), just before we use it. Move this error
checking to the arm_gicv3_common_realize() function, where we
sanity-check all of the other base-class properties. (This will
always be before gicv3_init_irqs_and_mmio() is called, because
that function is called in the subclass realize methods, after
they have called the parent-class realize.)
The motivation for this refactor is:
* we would like to use the redist_region_count[] values in
arm_gicv3_common_realize() in a subsequent patch, so we need
to have already done the sanity-checking first
* this removes the only use of the Error** argument to
gicv3_init_irqs_and_mmio(), so we can remove some error-handling
boilerplate
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Add an expire time for pending delete, once the time is over allow
pressing the attention button again.
This makes pcie hotplug behave more like acpi hotplug, where one can
try sending an 'device_del' monitor command again in case the guest
didn't respond to the first attempt.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-7-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In case the slot is powered off (and the power indicator turned off too)
we can unplug right away, without round-trip to the guest.
Also clear pending attention button press, there is nothing to care
about any more.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-6-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
No functional change.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-5-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Refuse to push the attention button in case the guest is busy with some
hotplug operation (as indicated by the power indicator blinking).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-4-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
With this patch hot-plugged pci devices will only be visible to the
guest if the guests hotplug driver has enabled slot power.
This should fix the hot-plug race which one can hit when hot-plugging
a pci device at boot, while the guest is in the middle of the pci bus
scan.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211111130859.1171890-3-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
