It's an alias for "ringbuf" we kept for backward compatibility; see
commit 3a1da42eb3 (qapi: Rename ChardevBackend member "memory" to
"ringbuf"). Deprecation is long overdue.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240203080228.2766159-5-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Character backends are actually QOM types. When a backend's
compile-time conditional QOM type is not compiled in, creation fails
with "'FOO' is not a valid char driver name". Okay, except
introspecting chardev-add with query-qmp-schema doesn't work then: the
backend type is there even though the QOM type isn't.
A management application can work around this issue by using
qom-list-types instead.
Fix the issue anyway: add the conditionals to the QAPI schema.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240203080228.2766159-4-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
- Update x86 CPU model docs and script
- Add missing close of chardev QIOChannel
- More trace events o nTKS handshake
- Drop unsafe VNC constants
- Increase NOFILE limit during startup
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Merge tag 'misc-fixes-pull-request' of https://gitlab.com/berrange/qemu into staging
- LUKS support for detached headers
- Update x86 CPU model docs and script
- Add missing close of chardev QIOChannel
- More trace events o nTKS handshake
- Drop unsafe VNC constants
- Increase NOFILE limit during startup
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# gpg: Signature made Fri 09 Feb 2024 14:04:05 GMT
# gpg: using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>" [full]
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* tag 'misc-fixes-pull-request' of https://gitlab.com/berrange/qemu:
tests: Add case for LUKS volume with detached header
crypto: Introduce 'detached-header' field in QCryptoBlockInfoLUKS
block: Support detached LUKS header creation using qemu-img
block: Support detached LUKS header creation using blockdev-create
crypto: Modify the qcrypto_block_create to support creation flags
qapi: Make parameter 'file' optional for BlockdevCreateOptionsLUKS
crypto: Support LUKS volume with detached header
io: add trace event when cancelling TLS handshake
chardev: close QIOChannel before unref'ing
docs: re-generate x86_64 ABI compatibility CSV
docs: fix highlighting of CPU ABI header rows
scripts: drop comment about autogenerated CPU API file
softmmu: remove obsolete comment about libvirt timeouts
ui: drop VNC feature _MASK constants
qemu_init: increase NOFILE soft limit on POSIX
crypto: Introduce SM4 symmetric cipher algorithm
meson: sort C warning flags alphabetically
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
As reported in Markus's recent enforcement series on qapi doc [1], we
accidentally miss one entry for tls-authz. Add it.
[1] https://lore.kernel.org/r/20240205074709.3613229-1-armbru@redhat.com
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Fabiano Rosas <farosas@suse.de>
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-ID: <20240207032836.268183-1-peterx@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Update of qapi/pragma.json squashed in, commit message adjusted]
Low-hanging fruit, and except for StatsFilter, the only members of
these unions lacking documentation.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-16-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Use of String is problematic, because it results in awkward interface
documentation. The previous commit cleaned up one instance.
Move String out of common.json next to its remaining users in net.json
to discourage reuse elsewhere.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-15-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
SocketAddress branch @fd is documented in enum SocketAddressType,
unlike the other branches. That's because the branch's type is String
from common.json.
Use a local copy of String, so we can put the documentation in the
usual place.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-14-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The conversion of simple to flat unions left the @data members
undocumented. Add documentation where it's trivial. Copy verbatim
from the wrapped type's description where possible.
Leftovers: String (to be taken care of in the next commit), and
TransActionAction (left for another day).
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-13-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The type's doc comment describes its member, but it's not marked up as
such. Easy enough to fix.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-12-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The command's doc comment describes the argument, but it's not marked
up as such. Easy enough to fix.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-11-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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>
docs/devel/qapi-code-gen demands that the "second and subsequent lines
of sections other than "Example"/"Examples" should be indented".
Commit a937b6aa739q (qapi: Reformat doc comments to conform to current
conventions) missed a few instances, and messed up a few others.
Clean that up.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-5-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The description of @bins ends with a literal block:
# @bins: list of io request counts corresponding to histogram
# intervals, one more element than @boundaries has. For the
# example above, @bins may be something like [3, 1, 5, 2], and
# corresponding histogram looks like:
#
# ::
#
# 5| *
Except it actually ends *before* the block: the unindented '::' line
starts a new section. Makes no sense.
We could fix this by indenting the '::' line. Instead, double the
colon at the end of the preceding paragraph, and drop the '::' line.
This shifts the box for the literal block right in generated
documentation, so it lines up with the description.
Fixes: commit a0fcff383b (qapi: Use rST markup for literal blocks)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-4-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When querying the LUKS disk with the qemu-img tool or other APIs,
add information about whether the LUKS header is detached.
Additionally, update the test case with the appropriate
modification.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Even though a LUKS header might be created with cryptsetup,
qemu-img should be enhanced to accommodate it as well.
Add the 'detached-header' option to specify the creation of
a detached LUKS header. This is how it is used:
$ qemu-img create --object secret,id=sec0,data=abc123 -f luks
> -o cipher-alg=aes-256,cipher-mode=xts -o key-secret=sec0
> -o detached-header=true header.luks
Using qemu-img or cryptsetup tools to query information of
an LUKS header image as follows:
Assume a detached LUKS header image has been created by:
$ dd if=/dev/zero of=test-header.img bs=1M count=32
$ dd if=/dev/zero of=test-payload.img bs=1M count=1000
$ cryptsetup luksFormat --header test-header.img test-payload.img
> --force-password --type luks1
Header image information could be queried using cryptsetup:
$ cryptsetup luksDump test-header.img
or qemu-img:
$ qemu-img info 'json:{"driver":"luks","file":{"filename":
> "test-payload.img"},"header":{"filename":"test-header.img"}}'
When using qemu-img, keep in mind that the entire disk
information specified by the JSON-format string above must be
supplied on the commandline; if not, an overlay check will reveal
a problem with the LUKS volume check logic.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
[changed to pass 'cflags' to block_crypto_co_create_generic]
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Firstly, enable the ability to choose the block device containing
a detachable LUKS header by adding the 'header' parameter to
BlockdevCreateOptionsLUKS.
Secondly, when formatting the LUKS volume with a detachable header,
truncate the payload volume to length without a header size.
Using the qmp blockdev command, create the LUKS volume with a
detachable header as follows:
1. add the secret to lock/unlock the cipher stored in the
detached LUKS header
$ virsh qemu-monitor-command vm '{"execute":"object-add",
> "arguments":{"qom-type": "secret", "id": "sec0", "data": "foo"}}'
2. create a header img with 0 size
$ virsh qemu-monitor-command vm '{"execute":"blockdev-create",
> "arguments":{"job-id":"job0", "options":{"driver":"file",
> "filename":"/path/to/detached_luks_header.img", "size":0 }}}'
3. add protocol blockdev node for header
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments": {"driver":"file", "filename":
> "/path/to/detached_luks_header.img", "node-name":
> "detached-luks-header-storage"}}'
4. create a payload img with 0 size
$ virsh qemu-monitor-command vm '{"execute":"blockdev-create",
> "arguments":{"job-id":"job1", "options":{"driver":"file",
> "filename":"/path/to/detached_luks_payload_raw.img", "size":0}}}'
5. add protocol blockdev node for payload
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments": {"driver":"file", "filename":
> "/path/to/detached_luks_payload_raw.img", "node-name":
> "luks-payload-raw-storage"}}'
6. do the formatting with 128M size
$ virsh qemu-monitor-command c81_node1 '{"execute":"blockdev-create",
> "arguments":{"job-id":"job2", "options":{"driver":"luks", "header":
> "detached-luks-header-storage", "file":"luks-payload-raw-storage",
> "size":134217728, "preallocation":"full", "key-secret":"sec0" }}}'
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
To support detached LUKS header creation, make the existing 'file'
field in BlockdevCreateOptionsLUKS optional.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
By enhancing the LUKS driver, it is possible to implement
the LUKS volume with a detached header.
Normally a LUKS volume has a layout:
disk: | header | key material | disk payload data |
With a detached LUKS header, you need 2 disks so getting:
disk1: | header | key material |
disk2: | disk payload data |
There are a variety of benefits to doing this:
* Secrecy - the disk2 cannot be identified as containing LUKS
volume since there's no header
* Control - if access to the disk1 is restricted, then even
if someone has access to disk2 they can't unlock
it. Might be useful if you have disks on NFS but
want to restrict which host can launch a VM
instance from it, by dynamically providing access
to the header to a designated host
* Flexibility - your application data volume may be a given
size and it is inconvenient to resize it to
add encryption.You can store the LUKS header
separately and use the existing storage
volume for payload
* Recovery - corruption of a bit in the header may make the
entire payload inaccessible. It might be
convenient to take backups of the header. If
your primary disk header becomes corrupt, you
can unlock the data still by pointing to the
backup detached header
Take the raw-format image as an example to introduce the usage
of the LUKS volume with a detached header:
1. prepare detached LUKS header images
$ dd if=/dev/zero of=test-header.img bs=1M count=32
$ dd if=/dev/zero of=test-payload.img bs=1M count=1000
$ cryptsetup luksFormat --header test-header.img test-payload.img
> --force-password --type luks1
2. block-add a protocol blockdev node of payload image
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments":{"node-name":"libvirt-1-storage", "driver":"file",
> "filename":"test-payload.img"}}'
3. block-add a protocol blockdev node of LUKS header as above.
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments":{"node-name":"libvirt-2-storage", "driver":"file",
> "filename": "test-header.img" }}'
4. object-add the secret for decrypting the cipher stored in
LUKS header above
$ virsh qemu-monitor-command vm '{"execute":"object-add",
> "arguments":{"qom-type":"secret", "id":
> "libvirt-2-storage-secret0", "data":"abc123"}}'
5. block-add the raw-drived blockdev format node
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments":{"node-name":"libvirt-1-format", "driver":"raw",
> "file":"libvirt-1-storage"}}'
6. block-add the luks-drived blockdev to link the raw disk
with the LUKS header by specifying the field "header"
$ virsh qemu-monitor-command vm '{"execute":"blockdev-add",
> "arguments":{"node-name":"libvirt-2-format", "driver":"luks",
> "file":"libvirt-1-format", "header":"libvirt-2-storage",
> "key-secret":"libvirt-2-format-secret0"}}'
7. hot-plug the virtio-blk device finally
$ virsh qemu-monitor-command vm '{"execute":"device_add",
> "arguments": {"num-queues":"1", "driver":"virtio-blk-pci",
> "drive": "libvirt-2-format", "id":"virtio-disk2"}}'
Starting a VM with a LUKS volume with detached header is
somewhat similar to hot-plug in that both maintaining the
same json command while the starting VM changes the
"blockdev-add/device_add" parameters to "blockdev/device".
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Introduce the SM4 cipher algorithms (OSCCA GB/T 32907-2016).
SM4 (GBT.32907-2016) is a cryptographic standard issued by the
Organization of State Commercial Administration of China (OSCCA)
as an authorized cryptographic algorithms for the use within China.
Detect the SM4 cipher algorithms and enable the feature silently
if it is available.
Signed-off-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The aio_co_reschedule_self() API is designed to avoid the race
condition between scheduling the coroutine in another AioContext and
yielding.
The QMP dispatch code uses the open-coded version that appears
susceptible to the race condition at first glance:
aio_co_schedule(qemu_get_aio_context(), qemu_coroutine_self());
qemu_coroutine_yield();
The code is actually safe because the iohandler and qemu_aio_context
AioContext run under the Big QEMU Lock. Nevertheless, set a good example
and use aio_co_reschedule_self() so it's obvious that there is no race.
Suggested-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20240206190610.107963-6-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Documentation of type BlockdevOptionsIscsi describes the type's
purpose after its members. Everywhere else, we do it the other way
round. Move it for consistency.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240129115008.674248-5-armbru@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Documentation of BlockExportRemoveMode has
Potential additional modes to be added in the future:
hide: Just hide export from new clients, leave existing connections
as is. Remove export after all clients are disconnected.
soft: Hide export from new clients, answer with ESHUTDOWN for all
further requests from existing clients.
I think this is useful only for developers. Elide it from generated
documentation by turning it into a TODO section.
This effectively reverts my own commit b71fd73cc4 (Revert "qapi:
BlockExportRemoveMode: move comments to TODO"). At the time, I was
about to elide TODO sections from the generated manual, I wasn't sure
about this one, and decided to avoid change. And now I've made up my
mind.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240129115008.674248-4-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Documentation generated for dump-skeys contains
This command is only supported on s390 architecture.
and
If
~~
"TARGET_S390X"
The former became redundant in commit 901a34a400 (qapi: add 'If:'
section to generated documentation) added the latter. Drop the
former.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240129115008.674248-3-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Documentation generated for SchemaInfo looks like
The members of "SchemaInfoBuiltin" when "meta-type" is ""builtin""
The members of "SchemaInfoEnum" when "meta-type" is ""enum""
The members of "SchemaInfoArray" when "meta-type" is ""array""
The members of "SchemaInfoObject" when "meta-type" is ""object""
The members of "SchemaInfoAlternate" when "meta-type" is ""alternate""
The members of "SchemaInfoCommand" when "meta-type" is ""command""
The members of "SchemaInfoEvent" when "meta-type" is ""event""
Additional members depend on the value of "meta-type".
The last line became redundant when commit 88f63467c5 (qapi2texi:
Generate reference to base type members) added the lines preceding it.
Drop it.
BlockdevOptions has the same issue. Drop
Remaining options are determined by the block driver.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240129115008.674248-2-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
'uri' argument should be optional, as 'uri' and 'channels'
arguments are mutally exclusive in nature.
Fixes: 074dbce5fc (migration: New migrate and migrate-incoming argument 'channels')
Signed-off-by: Het Gala <het.gala@nutanix.com>
Link: https://lore.kernel.org/r/20240123064219.40514-1-het.gala@nutanix.com
Signed-off-by: Peter Xu <peterx@redhat.com>
- virtio-blk: Multiqueue fixes and cleanups
- blklogwrites: Fixes for write_zeroes and superblock update races
- commit/stream: Allow users to request only format driver names in
backing file format
- monitor: only run coroutine commands in qemu_aio_context
- Some iotest fixes
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging
Block layer patches
- virtio-blk: Multiqueue fixes and cleanups
- blklogwrites: Fixes for write_zeroes and superblock update races
- commit/stream: Allow users to request only format driver names in
backing file format
- monitor: only run coroutine commands in qemu_aio_context
- Some iotest fixes
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# gpg: Signature made Fri 26 Jan 2024 12:26:20 GMT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
iotests/277: Use iotests.sock_dir for socket creation
iotests/iothreads-stream: Use the right TimeoutError
tests/unit: Bump test-replication timeout to 60 seconds
iotests/264: Use iotests.sock_dir for socket creation
block/blklogwrites: Protect mutable driver state with a mutex.
virtio-blk: always set ioeventfd during startup
virtio-blk: tolerate failure to set BlockBackend AioContext
virtio-blk: restart s->rq reqs in vq AioContexts
virtio-blk: rename dataplane to ioeventfd
virtio-blk: rename dataplane create/destroy functions
virtio-blk: move dataplane code into virtio-blk.c
monitor: only run coroutine commands in qemu_aio_context
iotests: port 141 to Python for reliable QMP testing
iotests: add filter_qmp_generated_node_ids()
stream: Allow users to request only format driver names in backing file format
commit: Allow users to request only format driver names in backing file format
string-output-visitor: Fix (pseudo) struct handling
block/blklogwrites: Fix a bug when logging "write zeroes" operations.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
monitor_qmp_dispatcher_co() runs in the iohandler AioContext that is not
polled during nested event loops. The coroutine currently reschedules
itself in the main loop's qemu_aio_context AioContext, which is polled
during nested event loops. One known problem is that QMP device-add
calls drain_call_rcu(), which temporarily drops the BQL, leading to all
sorts of havoc like other vCPU threads re-entering device emulation code
while another vCPU thread is waiting in device emulation code with
aio_poll().
Paolo Bonzini suggested running non-coroutine QMP handlers in the
iohandler AioContext. This avoids trouble with nested event loops. His
original idea was to move coroutine rescheduling to
monitor_qmp_dispatch(), but I resorted to moving it to qmp_dispatch()
because we don't know if the QMP handler needs to run in coroutine
context in monitor_qmp_dispatch(). monitor_qmp_dispatch() would have
been nicer since it's associated with the monitor implementation and not
as general as qmp_dispatch(), which is also used by qemu-ga.
A number of qemu-iotests need updated .out files because the order of
QMP events vs QMP responses has changed.
Solves Issue #1933.
Cc: qemu-stable@nongnu.org
Fixes: 7bed89958b ("device_core: use drain_call_rcu in in qmp_device_add")
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2215192
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=2214985
Buglink: https://issues.redhat.com/browse/RHEL-17369
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20240118144823.1497953-4-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Introduce a new flag 'backing-mask-protocol' for the block-stream QMP
command which instructs the internals to use 'raw' instead of the
protocol driver in case when a image is used without a dummy 'raw'
wrapper.
The flag is designed such that it can be always asserted by management
tools even when there isn't any update to backing files.
The flag will be used by libvirt so that the backing images still
reference the proper format even when libvirt will stop using the dummy
raw driver (raw driver with no other config). Libvirt needs this so that
the images stay compatible with older libvirt versions which didn't
expect that a protocol driver name can appear in the backing file format
field.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <bbee9a0a59748a8893289bf8249f568f0d587e62.1701796348.git.pkrempa@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Introduce a new flag 'backing-mask-protocol' for the block-commit QMP
command which instructs the internals to use 'raw' instead of the
protocol driver in case when a image is used without a dummy 'raw'
wrapper.
The flag is designed such that it can be always asserted by management
tools even when there isn't any update to backing files.
The flag will be used by libvirt so that the backing images still
reference the proper format even when libvirt will stop using the dummy
raw driver (raw driver with no other config). Libvirt needs this so that
the images stay compatible with older libvirt versions which didn't
expect that a protocol driver name can appear in the backing file format
field.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <2cb46e37093ce793ea1604abc8bbb90f4c8e434b.1701796348.git.pkrempa@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Commit ff32bb53 tried to get minimal struct support into the string
output visitor by just making it return "<omitted>". Unfortunately, it
forgot that the caller will still make more visitor calls for the
content of the struct.
If the struct is contained in a list, such as IOThreadVirtQueueMapping,
in the better case its fields show up as separate list entries. In the
worse case, it contains another list, and the string output visitor
doesn't support nested lists and asserts that this doesn't happen. So as
soon as the optional "vqs" field in IOThreadVirtQueueMapping is
specified, we get a crash.
This can be reproduced with the following command line:
echo "info qtree" | ./qemu-system-x86_64 \
-object iothread,id=t0 \
-blockdev null-co,node-name=disk \
-device '{"driver": "virtio-blk-pci", "drive": "disk",
"iothread-vq-mapping": [{"iothread": "t0", "vqs": [0]}]}' \
-monitor stdio
Fix the problem by counting the nesting level of structs and ignoring
any visitor calls for values (apart from start/end_struct) while we're
not on the top level.
Lists nested directly within lists remain unimplemented, as we don't
currently have a use case for them.
Fixes: ff32bb5347
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2069
Reported-by: Aihua Liang <aliang@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20240109181717.42493-1-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
"Since X.Y" is not recognized as a tagged section, and therefore not
formatted as such in generated documentation. Fix by adding the
required colon.
Previously fixed in commit 433a4fdc42 (qapi: Fix malformed "Since:"
section tags)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
docs/devel/qapi-code-gen demands that the "second and subsequent lines
of sections other than "Example"/"Examples" should be indented".
Commit a937b6aa73 (qapi: Reformat doc comments to conform to current
conventions) missed a few instances, and a few more have crept in
since. Indent them.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-7-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Commit e050e42678 (qapi: Use explicit bulleted lists) added list
markup to correct bad rendering:
A JSON block comment like this:
Returns: nothing on success
If @node is not a valid block device, DeviceNotFound
If @name is not found, GenericError with an explanation
renders like this:
Returns: nothing on success If node is not a valid block device,
DeviceNotFound If name is not found, GenericError with an explanation
because whitespace is not significant.
Use an actual bulleted list, so that the formatting is correct.
It missed a few instances. Commit a937b6aa73 (qapi: Reformat doc
comments to conform to current conventions) then reflowed them.
Revert the reflowing, and add list markup.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-6-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
docs/interop/bitmaps.rst uses references like
`qemu-qmp-ref <qemu-qmp-ref.html>`_
`query-block <qemu-qmp-ref.html#index-query_002dblock>`_
to refer to and into docs/interop/qemu-qmp-ref.rst.
Clean up the former: use :doc:`qemu-qmp-ref`.
I don't know how to clean up the latter.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240120095327.666239-5-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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: f7aa076dbd (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>
This member has been deprecated before the 8.1 release, in commit
34c18203d4 ("qmp: Deprecate 'singlestep' member of StatusInfo").
Time to drop it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240117151430.29235-2-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Currently, a vm in the suspended state is not completely stopped. The VCPUs
have been paused, but the cpu clock still runs, and runstate notifiers for
the transition to stopped have not been called. This causes problems for
live migration. Stale cpu timers_state is saved to the migration stream,
causing time errors in the guest when it wakes from suspend, and state that
would have been modified by runstate notifiers is wrong.
Modify vm_stop to completely stop the vm if the current state is suspended,
transition to RUN_STATE_PAUSED, and remember that the machine was suspended.
Modify vm_start to restore the suspended state.
This affects all callers of vm_stop and vm_start, notably, the qapi stop and
cont commands:
old behavior:
RUN_STATE_SUSPENDED --> stop --> RUN_STATE_SUSPENDED
new behavior:
RUN_STATE_SUSPENDED --> stop --> RUN_STATE_PAUSED
RUN_STATE_PAUSED --> cont --> RUN_STATE_SUSPENDED
For example:
(qemu) info status
VM status: paused (suspended)
(qemu) stop
(qemu) info status
VM status: paused
(qemu) system_wakeup
Error: Unable to wake up: guest is not in suspended state
(qemu) cont
(qemu) info status
VM status: paused (suspended)
(qemu) system_wakeup
(qemu) info status
VM status: running
Suggested-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1704312341-66640-3-git-send-email-steven.sistare@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>
virtio-blk and virtio-scsi devices will need a way to specify the
mapping between IOThreads and virtqueues. At the moment all virtqueues
are assigned to a single IOThread or the main loop. This single thread
can be a CPU bottleneck, so it is necessary to allow finer-grained
assignment to spread the load.
Introduce DEFINE_PROP_IOTHREAD_VQ_MAPPING_LIST() so devices can take a
parameter that maps virtqueues to IOThreads. The command-line syntax for
this new property is as follows:
--device '{"driver":"foo","iothread-vq-mapping":[{"iothread":"iothread0","vqs":[0,1,2]},...]}'
IOThreads are specified by name and virtqueues are specified by 0-based
index.
It will be common to simply assign virtqueues round-robin across a set
of IOThreads. A convenient syntax that does not require specifying
individual virtqueue indices is available:
--device '{"driver":"foo","iothread-vq-mapping":[{"iothread":"iothread0"},{"iothread":"iothread1"},...]}'
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231220134755.814917-4-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
StringOutputVisitor crashes when it visits a struct because
->start_struct() is NULL.
Show "<omitted>" instead of crashing. This is necessary because the
virtio-blk-pci iothread-vq-mapping parameter that I'd like to introduce
soon is a list of IOThreadMapping structs.
This patch is a quick fix to solve the crash, but the long-term solution
is replacing StringOutputVisitor with something that can handle the full
gamut of values in QEMU.
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231212134934.500289-1-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Introduce an iommufd object which allows the interaction
with the host /dev/iommu device.
The /dev/iommu can have been already pre-opened outside of qemu,
in which case the fd can be passed directly along with the
iommufd object:
This allows the iommufd object to be shared accross several
subsystems (VFIO, VDPA, ...). For example, libvirt would open
the /dev/iommu once.
If no fd is passed along with the iommufd object, the /dev/iommu
is opened by the qemu code.
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
With the introduction of list-based array properties in qdev, the string
output visitor has to deal with lists of non-integer elements now ('info
qtree' prints all properties with the string output visitor).
Currently there is no explicit support for such lists, and the resulting
output is only the last element because string_output_set() always
replaces the output with the latest value. Instead of replacing the old
value, append comma separated values in list context.
The difference can be observed in 'info qtree' with a 'rocker' device
that has a 'ports' list with more than one element.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231121173416.346610-3-kwolf@redhat.com>
Let's use more inclusive language here.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The command requires color conversion and line-by-line feeding. We could
have a simple fallback for simple formats though.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Provides a display option, zoom-to-fit, that enables scaling of the
display when full-screen mode is enabled.
Also ensures that the corresponding menu item is marked as enabled when
the option is set to on.
Signed-off-by: Carwyn Ellis <carwynellis@gmail.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20231027154920.80626-2-carwynellis@gmail.com>
* Rename ext_icboz to ext_zicboz
* Rename ext_icbom to ext_zicbom
* Rename ext_icsr to ext_zicsr
* Rename ext_ifencei to ext_zifencei
* Add RISC-V Virtual IRQs and IRQ filtering support
* Change default linux-user cpu to 'max'
* Update 'virt' machine core limit
* Add query-cpu-model-expansion API
* Rename epmp to smepmp and expose the extension
* Clear pmp/smepmp bits on reset
* Ignore pmp writes when RW=01
* Support zicntr/zihpm flags and disable support
* Correct CSR_MSECCFG operations
* Update mail address for Weiwei Li
* Update RISC-V vector crypto to ratified v1.0.0
* Clear the Ibex/OpenTitan SPI interrupts even if disabled
* Set the OpenTitan priv to 1.12.0
* Support discontinuous PMU counters
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Merge tag 'pull-riscv-to-apply-20231107' of https://github.com/alistair23/qemu into staging
Third RISC-V PR for 8.2
* Rename ext_icboz to ext_zicboz
* Rename ext_icbom to ext_zicbom
* Rename ext_icsr to ext_zicsr
* Rename ext_ifencei to ext_zifencei
* Add RISC-V Virtual IRQs and IRQ filtering support
* Change default linux-user cpu to 'max'
* Update 'virt' machine core limit
* Add query-cpu-model-expansion API
* Rename epmp to smepmp and expose the extension
* Clear pmp/smepmp bits on reset
* Ignore pmp writes when RW=01
* Support zicntr/zihpm flags and disable support
* Correct CSR_MSECCFG operations
* Update mail address for Weiwei Li
* Update RISC-V vector crypto to ratified v1.0.0
* Clear the Ibex/OpenTitan SPI interrupts even if disabled
* Set the OpenTitan priv to 1.12.0
* Support discontinuous PMU counters
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# AVTCc5G9KghsaB8q0BzYbDplzCggdaaUBRgpIgLS/n22GKJlOisFwMCawWquPkEw
# i0t3ftt+Ket4Qnnq+dO4W3ehR4qW1/XatCWgQ3NCSgUeS4/9VK3h/nz5t+L7iKwp
# mjp86gNN11wcJRsBIIV7nOAmSAs9ybCm2F4J6YAyh3n1IlRVN0Q=
# =2A+W
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 07 Nov 2023 10:28:49 HKT
# gpg: using RSA key 6AE902B6A7CA877D6D659296AF7C95130C538013
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6AE9 02B6 A7CA 877D 6D65 9296 AF7C 9513 0C53 8013
* tag 'pull-riscv-to-apply-20231107' of https://github.com/alistair23/qemu: (49 commits)
docs/about/deprecated: Document RISC-V "pmu-num" deprecation
target/riscv: Add "pmu-mask" property to replace "pmu-num"
target/riscv: Use existing PMU counter mask in FDT generation
target/riscv: Don't assume PMU counters are continuous
target/riscv: Propagate error from PMU setup
target/riscv: cpu: Set the OpenTitan priv to 1.12.0
hw/ssi: ibex_spi_host: Clear the interrupt even if disabled
disas/riscv: Replace TABs with space
disas/riscv: Add support for vector crypto extensions
disas/riscv: Add rv_codec_vror_vi for vror.vi
disas/riscv: Add rv_fmt_vd_vs2_uimm format
target/riscv: Move vector crypto extensions to riscv_cpu_extensions
target/riscv: Expose Zvks[c|g] extnesion properties
target/riscv: Add cfg properties for Zvks[c|g] extensions
target/riscv: Expose Zvkn[c|g] extnesion properties
target/riscv: Add cfg properties for Zvkn[c|g] extensions
target/riscv: Expose Zvkb extension property
target/riscv: Replace Zvbb checking by Zvkb
target/riscv: Add cfg property for Zvkb extension
target/riscv: Expose Zvkt extension property
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
