"Host Memory Backends" and "Memory devices" queue ("mem"):
- Support and document VM templating with R/O files using a new "rom"
parameter for memory-backend-file
- Some cleanups and fixes around NVDIMMs and R/O file handling for guest
RAM
- Optimize ioeventfd updates by skipping address spaces that are not
applicable
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Merge tag 'mem-2023-09-19' of https://github.com/davidhildenbrand/qemu into staging
Hi,
"Host Memory Backends" and "Memory devices" queue ("mem"):
- Support and document VM templating with R/O files using a new "rom"
parameter for memory-backend-file
- Some cleanups and fixes around NVDIMMs and R/O file handling for guest
RAM
- Optimize ioeventfd updates by skipping address spaces that are not
applicable
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# gpg: Signature made Tue 19 Sep 2023 06:25:45 EDT
# gpg: using RSA key 1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A
# gpg: issuer "david@redhat.com"
# gpg: Good signature from "David Hildenbrand <david@redhat.com>" [unknown]
# gpg: aka "David Hildenbrand <davidhildenbrand@gmail.com>" [full]
# gpg: aka "David Hildenbrand <hildenbr@in.tum.de>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1BD9 CAAD 735C 4C3A 460D FCCA 4DDE 10F7 00FF 835A
* tag 'mem-2023-09-19' of https://github.com/davidhildenbrand/qemu:
memory: avoid updating ioeventfds for some address_space
machine: Improve error message when using default RAM backend id
softmmu/physmem: Hint that "readonly=on,rom=off" exists when opening file R/W for private mapping fails
docs: Start documenting VM templating
docs: Don't mention "-mem-path" in multi-process.rst
softmmu/physmem: Never return directories from file_ram_open()
softmmu/physmem: Fail creation of new files in file_ram_open() with readonly=true
softmmu/physmem: Bail out early in ram_block_discard_range() with readonly files
softmmu/physmem: Remap with proper protection in qemu_ram_remap()
backends/hostmem-file: Add "rom" property to support VM templating with R/O files
softmmu/physmem: Distinguish between file access mode and mmap protection
nvdimm: Reject writing label data to ROM instead of crashing QEMU
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
For now, "share=off,readonly=on" would always result in us opening the
file R/O and mmap'ing the opened file MAP_PRIVATE R/O -- effectively
turning it into ROM.
Especially for VM templating, "share=off" is a common use case. However,
that use case is impossible with files that lack write permissions,
because "share=off,readonly=on" will not give us writable RAM.
The sole user of ROM via memory-backend-file are R/O NVDIMMs, but as we
have users (Kata Containers) that rely on the existing behavior --
malicious VMs should not be able to consume COW memory for R/O NVDIMMs --
we cannot change the semantics of "share=off,readonly=on"
So let's add a new "rom" property with on/off/auto values. "auto" is
the default and what most people will use: for historical reasons, to not
change the old semantics, it defaults to the value of the "readonly"
property.
For VM templating, one can now use:
-object memory-backend-file,share=off,readonly=on,rom=off,...
But we'll disallow:
-object memory-backend-file,share=on,readonly=on,rom=off,...
because we would otherwise get an error when trying to mmap the R/O file
shared and writable. An explicit error message is cleaner.
We will also disallow for now:
-object memory-backend-file,share=off,readonly=off,rom=on,...
-object memory-backend-file,share=on,readonly=off,rom=on,...
It's not harmful, but also not really required for now.
Alternatives that were abandoned:
* Make "unarmed=on" for the NVDIMM set the memory region container
readonly. We would still see a change of ROM->RAM and possibly run
into memslot limits with vhost-user. Further, there might be use cases
for "unarmed=on" that should still allow writing to that memory
(temporary files, system RAM, ...).
* Add a new "readonly=on/off/auto" parameter for NVDIMMs. Similar issues
as with "unarmed=on".
* Make "readonly" consume "on/off/file" instead of being a 'bool' type.
This would slightly changes the behavior of the "readonly" parameter:
values like true/false (as accepted by a 'bool'type) would no longer be
accepted.
Message-ID: <20230906120503.359863-4-david@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
AF_XDP is a network socket family that allows communication directly
with the network device driver in the kernel, bypassing most or all
of the kernel networking stack. In the essence, the technology is
pretty similar to netmap. But, unlike netmap, AF_XDP is Linux-native
and works with any network interfaces without driver modifications.
Unlike vhost-based backends (kernel, user, vdpa), AF_XDP doesn't
require access to character devices or unix sockets. Only access to
the network interface itself is necessary.
This patch implements a network backend that communicates with the
kernel by creating an AF_XDP socket. A chunk of userspace memory
is shared between QEMU and the host kernel. 4 ring buffers (Tx, Rx,
Fill and Completion) are placed in that memory along with a pool of
memory buffers for the packet data. Data transmission is done by
allocating one of the buffers, copying packet data into it and
placing the pointer into Tx ring. After transmission, device will
return the buffer via Completion ring. On Rx, device will take
a buffer form a pre-populated Fill ring, write the packet data into
it and place the buffer into Rx ring.
AF_XDP network backend takes on the communication with the host
kernel and the network interface and forwards packets to/from the
peer device in QEMU.
Usage example:
-device virtio-net-pci,netdev=guest1,mac=00:16:35:AF:AA:5C
-netdev af-xdp,ifname=ens6f1np1,id=guest1,mode=native,queues=1
XDP program bridges the socket with a network interface. It can be
attached to the interface in 2 different modes:
1. skb - this mode should work for any interface and doesn't require
driver support. With a caveat of lower performance.
2. native - this does require support from the driver and allows to
bypass skb allocation in the kernel and potentially use
zero-copy while getting packets in/out userspace.
By default, QEMU will try to use native mode and fall back to skb.
Mode can be forced via 'mode' option. To force 'copy' even in native
mode, use 'force-copy=on' option. This might be useful if there is
some issue with the driver.
Option 'queues=N' allows to specify how many device queues should
be open. Note that all the queues that are not open are still
functional and can receive traffic, but it will not be delivered to
QEMU. So, the number of device queues should generally match the
QEMU configuration, unless the device is shared with something
else and the traffic re-direction to appropriate queues is correctly
configured on a device level (e.g. with ethtool -N).
'start-queue=M' option can be used to specify from which queue id
QEMU should start configuring 'N' queues. It might also be necessary
to use this option with certain NICs, e.g. MLX5 NICs. See the docs
for examples.
In a general case QEMU will need CAP_NET_ADMIN and CAP_SYS_ADMIN
or CAP_BPF capabilities in order to load default XSK/XDP programs to
the network interface and configure BPF maps. It is possible, however,
to run with no capabilities. For that to work, an external process
with enough capabilities will need to pre-load default XSK program,
create AF_XDP sockets and pass their file descriptors to QEMU process
on startup via 'sock-fds' option. Network backend will need to be
configured with 'inhibit=on' to avoid loading of the program.
QEMU will need 32 MB of locked memory (RLIMIT_MEMLOCK) per queue
or CAP_IPC_LOCK.
There are few performance challenges with the current network backends.
First is that they do not support IO threads. This means that data
path is handled by the main thread in QEMU and may slow down other
work or may be slowed down by some other work. This also means that
taking advantage of multi-queue is generally not possible today.
Another thing is that data path is going through the device emulation
code, which is not really optimized for performance. The fastest
"frontend" device is virtio-net. But it's not optimized for heavy
traffic either, because it expects such use-cases to be handled via
some implementation of vhost (user, kernel, vdpa). In practice, we
have virtio notifications and rcu lock/unlock on a per-packet basis
and not very efficient accesses to the guest memory. Communication
channels between backend and frontend devices do not allow passing
more than one packet at a time as well.
Some of these challenges can be avoided in the future by adding better
batching into device emulation or by implementing vhost-af-xdp variant.
There are also a few kernel limitations. AF_XDP sockets do not
support any kinds of checksum or segmentation offloading. Buffers
are limited to a page size (4K), i.e. MTU is limited. Multi-buffer
support implementation for AF_XDP is in progress, but not ready yet.
Also, transmission in all non-zero-copy modes is synchronous, i.e.
done in a syscall. That doesn't allow high packet rates on virtual
interfaces.
However, keeping in mind all of these challenges, current implementation
of the AF_XDP backend shows a decent performance while running on top
of a physical NIC with zero-copy support.
Test setup:
2 VMs running on 2 physical hosts connected via ConnectX6-Dx card.
Network backend is configured to open the NIC directly in native mode.
The driver supports zero-copy. NIC is configured to use 1 queue.
Inside a VM - iperf3 for basic TCP performance testing and dpdk-testpmd
for PPS testing.
iperf3 result:
TCP stream : 19.1 Gbps
dpdk-testpmd (single queue, single CPU core, 64 B packets) results:
Tx only : 3.4 Mpps
Rx only : 2.0 Mpps
L2 FWD Loopback : 1.5 Mpps
In skb mode the same setup shows much lower performance, similar to
the setup where pair of physical NICs is replaced with veth pair:
iperf3 result:
TCP stream : 9 Gbps
dpdk-testpmd (single queue, single CPU core, 64 B packets) results:
Tx only : 1.2 Mpps
Rx only : 1.0 Mpps
L2 FWD Loopback : 0.7 Mpps
Results in skb mode or over the veth are close to results of a tap
backend with vhost=on and disabled segmentation offloading bridged
with a NIC.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> (docker/lcitool)
Signed-off-by: Jason Wang <jasowang@redhat.com>
In commit 6f974c843c ("gtk: overwrite the console.c char driver"), I
shared the VC console parse handler with GTK. And later on in commit
d8aec9d9 ("display: add -display spice-app launching a Spice client"),
I also used it to handle spice-app VC.
This is not necessary, the VC console options (width/height/cols/rows)
are specific, and unused by tty-level GTK/Spice VC.
This is not a breaking change, as those options are still being parsed
by QAPI ChardevVC. Adjust the documentation about it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230830093843.3531473-44-marcandre.lureau@redhat.com>
Reformat the dirty-limit migration doc comments to conform
to current conventions as commit a937b6aa73 (qapi: Reformat
doc comments to conform to current conventions).
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Message-ID: <169073570563.19893.2928364761104733482-1@git.sr.ht>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Whitespace tidied up]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Since commit a937b6aa73 (qapi: Reformat doc comments to conform to
current conventions), a number of comments not conforming to the
current formatting conventions were added. No problem, just sweep
the entire documentation once more.
To check the generated documentation does not change, I compared the
generated HTML before and after this commit with "wdiff -3". Finds no
differences. Comparing with diff is not useful, as the reflown
paragraphs are visible there.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20230720071610.1096458-7-armbru@redhat.com>
trace-event-set-state's explanation of how events are selected is
under "Features". Doesn't belong there. Simply delete it, as it
feels redundant with documentation of member @name.
trace-event-get-state's explanation is under "Returns". Tolerable,
but similarly redundant. Delete it, too.
Cc: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20230720071610.1096458-5-armbru@redhat.com>
The notes section comes out like this:
Notes
Additional arguments depend on the type.
1. For detailed information about this command, please refer to the
‘docs/qdev-device-use.txt’ file.
2. It’s possible to list device properties by running QEMU with the
“-device DEVICE,help” command-line argument, where DEVICE is the
device’s name
The first item isn't numbered. Fix that:
1. Additional arguments depend on the type.
2. For detailed information about this command, please refer to the
‘docs/qdev-device-use.txt’ file.
3. It’s possible to list device properties by running QEMU with the
“-device DEVICE,help” command-line argument, where DEVICE is the
device’s name
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20230720071610.1096458-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Examples come out like
Example
set new histograms for all io types with intervals [0, 10), [10,
50), [50, 100), [100, +inf):
The sentence "set new histograms ..." starts with a lower case letter.
Capitalize it. Same for the other examples.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20230720071610.1096458-3-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Documentation for member @bin comes out like
list of io request counts corresponding to histogram intervals.
len("bins") = len("boundaries") + 1 For the example above, "bins"
may be something like [3, 1, 5, 2], and corresponding histogram
looks like:
Note how the equation and the sentence following it run together.
Replace the equation:
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:
Cc: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20230720071610.1096458-2-armbru@redhat.com>
[Off by one fixed]
Has return zero for more than 10 years.
Specifically we introduced the field in 1.5.0
commit f1c72795af
Author: Peter Lieven <pl@kamp.de>
Date: Tue Mar 26 10:58:37 2013 +0100
migration: do not sent zero pages in bulk stage
during bulk stage of ram migration if a page is a
zero page do not send it at all.
the memory at the destination reads as zero anyway.
even if there is an madvise with QEMU_MADV_DONTNEED
at the target upon receipt of a zero page I have observed
that the target starts swapping if the memory is overcommitted.
it seems that the pages are dropped asynchronously.
this patch also updates QMP to return the number of
skipped pages in MigrationStats.
but removed its usage in 1.5.3
commit 9ef051e553
Author: Peter Lieven <pl@kamp.de>
Date: Mon Jun 10 12:14:19 2013 +0200
Revert "migration: do not sent zero pages in bulk stage"
Not sending zero pages breaks migration if a page is zero
at the source but not at the destination. This can e.g. happen
if different BIOS versions are used at source and destination.
It has also been reported that migration on pseries is completely
broken with this patch.
This effectively reverts commit f1c72795af.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20230612193344.3796-2-quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Extend query-migrate to provide throttle time and estimated
ring full time with dirty-limit capability enabled, through which
we can observe if dirty limit take effect during live migration.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-ID: <168733225273.5845.15871826788879741674-8@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Introduce migration dirty-limit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Introduce migrate_dirty_limit function to help check
if dirty-limit capability enabled during live migration.
Meanwhile, refactor vcpu_dirty_rate_stat_collect
so that period can be configured instead of hardcoded.
dirty-limit capability is kind of like auto-converge
but using dirty limit instead of traditional cpu-throttle
to throttle guest down. To enable this feature, turn on
the dirty-limit capability before live migration using
migrate-set-capabilities, and set the parameters
"x-vcpu-dirty-limit-period", "vcpu-dirty-limit" suitably
to speed up convergence.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-4@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-parameters.
This two parameters are used to help implement the dirty
page rate limit algo of migration.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-3@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is in the range of 1 to 1000ms and used to
make dirtyrate calculation period configurable.
Currently with the "x-vcpu-dirty-limit-period" varies, the
total time of live migration changes, test results show the
optimal value of "x-vcpu-dirty-limit-period" ranges from
500ms to 1000 ms. "x-vcpu-dirty-limit-period" should be made
stable once it proves best value can not be determined with
developer's experiments.
Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-2@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
So all the file is consistent.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230612191604.2219-1-quintela@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Rewrote calc-dirty-rate documentation. Briefly described
different modes of dirty page rate measurement. Added some
examples. Fixed obvious grammar errors.
Signed-off-by: Andrei Gudkov <gudkov.andrei@huawei.com>
Message-Id: <fe7d32a621ebd69ef6974beb2499c0b5dccb9e19.1684854849.git.gudkov.andrei@huawei.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
[Prose tweaked and spacing corrected, as per review]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Migration downtime estimation is calculated based on bandwidth and
remaining migration data. This assumes that loading of migration data in
the destination takes a negligible amount of time and that downtime
depends only on network speed.
While this may be true for RAM, it's not necessarily true for other
migrated devices. For example, loading the data of a VFIO device in the
destination might require from the device to allocate resources, prepare
internal data structures and so on. These operations can take a
significant amount of time which can increase migration downtime.
This patch adds a new capability "switchover ack" that prevents the
source from stopping the VM and completing the migration until an ACK
is received from the destination that it's OK to do so.
This can be used by migrated devices in various ways to reduce downtime.
For example, a device can send initial precopy metadata to pre-allocate
resources in the destination and use this capability to make sure that
the pre-allocation is completed before the source VM is stopped, so it
will have full effect.
This new capability relies on the return path capability to communicate
from the destination back to the source.
The actual implementation of the capability will be added in the
following patches.
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Tested-by: YangHang Liu <yanghliu@redhat.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Make GBM optional for EGL code, and enable the build for win32.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230606115658.677673-13-marcandre.lureau@redhat.com>
TBStats will be introduced to replace CONFIG_PROFILER totally, here
remove all CONFIG_PROFILER related stuffs first.
Signed-off-by: Vanderson M. do Rosario <vandersonmr2@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Fei Wu <fei2.wu@intel.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230607122411.3394702-2-fei2.wu@intel.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These events include a copy of the device health information at the
time of the event. Actually using the emulated device health would
require a lot of controls to manipulate that state. Given the aim
of this injection code is to just test the flows when events occur,
inject the contents of the device health state as well.
Future work may add more sophisticate device health emulation
including direct generation of these records when events occur
(such as a temperature threshold being crossed). That does not
reduce the usefulness of this more basic generation of the events.
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230530133603.16934-8-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Defined in CXL r3.0 8.2.9.2.1.2 DRAM Event Record, this event
provides information related to DRAM devices.
Example injection command in QMP:
{ "execute": "cxl-inject-dram-event",
"arguments": {
"path": "/machine/peripheral/cxl-mem0",
"log": "informational",
"flags": 1,
"dpa": 1000,
"descriptor": 3,
"type": 3,
"transaction-type": 192,
"channel": 3,
"rank": 17,
"nibble-mask": 37421234,
"bank-group": 7,
"bank": 11,
"row": 2,
"column": 77,
"correction-mask": [33, 44, 55,66]
}}
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230530133603.16934-7-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To facilitate testing provide a QMP command to inject a general media
event. The event can be added to the log specified.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230530133603.16934-6-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Inject poison using QMP command cxl-inject-poison to add an entry to the
poison list.
For now, the poison is not returned CXL.mem reads, but only via the
mailbox command Get Poison List. So a normal memory read to an address
that is on the poison list will not yet result in a synchronous exception
(and similar for partial cacheline writes).
That is left for a future patch.
See CXL rev 3.0, sec 8.2.9.8.4.1 Get Poison list (Opcode 4300h)
Kernel patches to use this interface here:
https://lore.kernel.org/linux-cxl/cover.1665606782.git.alison.schofield@intel.com/
To inject poison using QMP (telnet to the QMP port)
{ "execute": "qmp_capabilities" }
{ "execute": "cxl-inject-poison",
"arguments": {
"path": "/machine/peripheral/cxl-pmem0",
"start": 2048,
"length": 256
}
}
Adjusted to select a device on your machine.
Note that the poison list supported is kept short enough to avoid the
complexity of state machine that is needed to handle the MORE flag.
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230526170010.574-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Since we *might* have user emulation with softmmu,
use the clearer 'CONFIG_SYSTEM_ONLY' key to check
for system emulation.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230613133347.82210-9-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
migrate_ignore_shared() is an optimization that avoids copying memory
that is visible and can be mapped on the target. However, a
memory-backend-ram or a memory-backend-memfd block with the RAM_SHARED
flag set is not migrated when migrate_ignore_shared() is true. This is
wrong, because the block has no named backing store, and its contents will
be lost. To fix, ignore shared memory iff it is a named file. Define a
new flag RAM_NAMED_FILE to distinguish this case.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <1686151116-253260-1-git-send-email-steven.sistare@oracle.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
When we for example have a sparse qcow2 image and discard: unmap is enabled,
there can be a lot of fragmentation in the image after some time. Especially on VM's
that do a lot of writes/deletes.
This causes the qcow2 image to grow even over 110% of its virtual size,
because the free gaps in the image get too small to allocate new
continuous clusters. So it allocates new space at the end of the image.
Disabling discard is not an option, as discard is needed to keep the
incremental backup size as low as possible. Without discard, the
incremental backups would become large, as qemu thinks it's just dirty
blocks but it doesn't know the blocks are unneeded.
So we need to avoid fragmentation but also 'empty' the unneeded blocks in
the image to have a small incremental backup.
In addition, we also want to send the discards further down the stack, so
the underlying blocks are still discarded.
Therefor we introduce a new qcow2 option "discard-no-unref".
When setting this option to true, discards will no longer have the qcow2
driver relinquish cluster allocations. Other than that, the request is
handled as normal: All clusters in range are marked as zero, and, if
pass-discard-request is true, it is passed further down the stack.
The only difference is that the now-zero clusters are preallocated
instead of being unallocated.
This will avoid fragmentation on the qcow2 image.
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1621
Signed-off-by: Jean-Louis Dupond <jean-louis@dupond.be>
Message-Id: <20230605084523.34134-2-jean-louis@dupond.be>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
It's already confusing that we have two very similar functions for
wrapping the parse of a 64-bit unsigned value, differing mainly on
whether they permit leading '-'. Adjust the signature of parse_uint()
and parse_uint_full() to be like all of qemu_strto*(): put the result
parameter last, use the same types (uint64_t and unsigned long long
have the same width, but are not always the same type), and mark
endptr const (this latter change only affects the rare caller of
parse_uint). Adjust all callers in the tree.
While at it, note that since cutils.c already includes:
QEMU_BUILD_BUG_ON(sizeof(int64_t) != sizeof(long long));
we are guaranteed that the result of parse_uint* cannot exceed
UINT64_MAX (or the build would have failed), so we can drop
pre-existing dead comparisons in opts-visitor.c that were never false.
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20230522190441.64278-8-eblake@redhat.com>
[eblake: Drop dead code spotted by Markus]
Signed-off-by: Eric Blake <eblake@redhat.com>
The virtio-blk-vhost-vdpa driver in libblkio 1.3.0 supports the fd
passing through the new 'fd' property.
Since now we are using qemu_open() on '@path' if the virtio-blk driver
supports the fd passing, let's announce it.
In this way, the management layer can pass the file descriptor of an
already opened vhost-vdpa character device. This is useful especially
when the device can only be accessed with certain privileges.
Add the '@fdset' feature only when the virtio-blk-vhost-vdpa driver
in libblkio supports it.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20230530071941.8954-3-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
I don't think I can remove the parameters directly but certainly mark
them as deprecated.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20230526165401.574474-7-alex.bennee@linaro.org
Message-Id: <20230524133952.3971948-6-alex.bennee@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
inside the same target file, such as a device node.
In particular, it's useful to map guest memory directly into /dev/mem
for experimentation.
To make this work consistently, also fix up all places in QEMU that
expect fd offsets to be 0.
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20230403221421.60877-1-graf@amazon.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Convert the qmp-spec.txt document to restructuredText.
Notable points about the conversion:
* numbers at the start of section headings are removed, to match
the style of the rest of the manual
* cross-references to other sections or documents are hyperlinked
* various formatting tweaks (notably the examples, which need the
-> and <- prefixed so the QMP code-block lexer will accept them)
* English prose fixed in a few places
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230515162245.3964307-2-peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[.. code-block:: dumbed down to :: to work around CI failure]
Taking account of the new zone append write operation for zoned devices,
BLOCK_ACCT_ZONE_APPEND enum is introduced as other I/O request type (read,
write, flush).
Signed-off-by: Sam Li <faithilikerun@gmail.com>
Message-id: 20230508051916.178322-3-faithilikerun@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
We don't allow to use x-colo capability when replication is not
configured. So, no reason to build COLO when replication is disabled,
it's unusable in this case.
Note also that the check in migrate_caps_check() is not the only
restriction: some functions in migration/colo.c will just abort if
called with not defined CONFIG_REPLICATION, for example:
migration_iteration_finish()
case MIGRATION_STATUS_COLO:
migrate_start_colo_process()
colo_process_checkpoint()
abort()
It could probably make sense to have possibility to enable COLO without
REPLICATION, but this requires deeper audit of colo & replication code,
which may be done later if needed.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Acked-by: Dr. David Alan Gilbert <dave@treblig.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230428194928.1426370-4-vsementsov@yandex-team.ru>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Change
# @name: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed
# do eiusmod tempor incididunt ut labore et dolore magna aliqua.
to
# @name: Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed
# do eiusmod tempor incididunt ut labore et dolore magna aliqua.
See recent commit "qapi: Relax doc string @name: description
indentation rules" for rationale.
Reflow paragraphs to 70 columns width, and consistently use two spaces
to separate sentences.
To check the generated documentation does not change, I compared the
generated HTML before and after this commit with "wdiff -3". Finds no
differences. Comparing with diff is not useful, as the reflown
paragraphs are visible there.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230428105429.1687850-18-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Lukas Straub <lukasstraub2@web.de>
[Straightforward conflicts in qapi/audio.json qapi/misc-target.json
qapi/run-state.json resolved]
Documentation of dump-guest-memory contains two bulleted lists. The
first one is indented, the second one isn't. Delete the first one's
indentation for a more consistent look.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230428105429.1687850-9-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
MigrateSetParameters has a TODO comment sitting right behind its doc
comment. I wrote it this way to keep it out of the manual, but that
reason is not obvious.
The previous commit (sphinx/qapidoc: Do not emit TODO sections into
user manuals) lets me move it into the doc comment as a TODO section.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230428105429.1687850-8-armbru@redhat.com>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
This reverts commit 97cd74f772.
The next commit will hide TODO: sections. See there for rationale.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230428105429.1687850-6-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
This commit adds a new audiodev backend to allow QEMU to use Pipewire as
both an audio sink and source. This backend is available on most systems
Add Pipewire entry points for QEMU Pipewire audio backend
Add wrappers for QEMU Pipewire audio backend in qpw_pcm_ops()
qpw_write function returns the current state of the stream to pwaudio
and Writes some data to the server for playback streams using pipewire
spa_ringbuffer implementation.
qpw_read function returns the current state of the stream to pwaudio and
reads some data from the server for capture streams using pipewire
spa_ringbuffer implementation. These functions qpw_write and qpw_read
are called during playback and capture.
Added some functions that convert pw audio formats to QEMU audio format
and vice versa which would be needed in the pipewire audio sink and
source functions qpw_init_in() & qpw_init_out().
These methods that implement playback and recording will create streams
for playback and capture that will start processing and will result in
the on_process callbacks to be called.
Built a connection to the Pipewire sound system server in the
qpw_audio_init() method.
Signed-off-by: Dorinda Bassey <dbassey@redhat.com>
Reviewed-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20230417105654.32328-1-dbassey@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This command is used by tooling like libvirt to retrieve a list of
supported CPUs. Each entry returns a CpuDefinitionInfo object that
contains more information about each CPU.
This initial support includes only the name of the CPU and its typename.
Here's what the command produces for the riscv64 target:
$ ./build/qemu-system-riscv64 -S -M virt -display none -qmp stdio
{"QMP": {"version": (...)}
{"execute": "qmp_capabilities", "arguments": {"enable": ["oob"]}}
{"return": {}}
{"execute": "query-cpu-definitions"}
{"return": [
{"name": "rv64", "typename": "rv64-riscv-cpu", "static": false, "deprecated": false},
{"name": "sifive-e51", "typename": "sifive-e51-riscv-cpu", "static": false, "deprecated": false},
{"name": "any", "typename": "any-riscv-cpu", "static": false, "deprecated": false},
{"name": "x-rv128", "typename": "x-rv128-riscv-cpu", "static": false, "deprecated": false},
{"name": "shakti-c", "typename": "shakti-c-riscv-cpu", "static": false, "deprecated": false},
{"name": "thead-c906", "typename": "thead-c906-riscv-cpu", "static": false, "deprecated": false},
{"name": "sifive-u54", "typename": "sifive-u54-riscv-cpu", "static": false, "deprecated": false}]
}
Next patch will introduce a way to tell whether a given CPU is static or
not.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230411183511.189632-3-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
The 'singlestep' member of StatusInfo has never done what the QMP
documentation claims it does. What it actually reports is whether
TCG is working in "one guest instruction per translation block" mode.
We no longer need this field for the HMP 'info status' command, as
we've moved that information to 'info jit'. It seems unlikely that
anybody is monitoring the state of this obscure TCG setting via QMP,
especially since QMP provides no means for changing the setting. So
simply deprecate the field, without providing any replacement.
Until we do eventually delete the member, correct the misstatements
in the QAPI documentation about it.
If we do find that there are users for this, then the most likely way
we would provide replacement access to the information would be to
put the accelerator QOM object at a well-known path such as
/machine/accel, which could then be used with the existing qom-set
and qom-get commands.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20230417164041.684562-11-peter.maydell@linaro.org
The run-state.json file is missing a trailing newline; add it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230417164041.684562-10-peter.maydell@linaro.org
* Update kernel headers to 6.3rc5
* Suppress GCC13 false positive in aio_bh_poll()
* Add new x86 feature bits
* Coverity fixes
* More steps towards removing qatomic_mb_set/read
* Fix reduced-phys-bits value for AMD SEV
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* Fix compilation issues under Debian 10
* Update kernel headers to 6.3rc5
* Suppress GCC13 false positive in aio_bh_poll()
* Add new x86 feature bits
* Coverity fixes
* More steps towards removing qatomic_mb_set/read
* Fix reduced-phys-bits value for AMD SEV
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# gpg: Signature made Sat 29 Apr 2023 01:19:14 PM BST
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [undefined]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
cpus-common: stop using mb_set/mb_read
async: Suppress GCC13 false positive in aio_bh_poll()
tests: vhost-user-test: release mutex on protocol violation
Update linux headers to v6.3rc5
update-linux-headers.sh: Add missing kernel headers.
Fix libvhost-user.c compilation.
target/i386: Add support for PREFETCHIT0/1 in CPUID enumeration
target/i386: Add support for AVX-NE-CONVERT in CPUID enumeration
target/i386: Add support for AVX-VNNI-INT8 in CPUID enumeration
target/i386: Add support for AVX-IFMA in CPUID enumeration
target/i386: Add support for AMX-FP16 in CPUID enumeration
target/i386: Add support for CMPCCXADD in CPUID enumeration
i386/cpu: Update how the EBX register of CPUID 0x8000001F is set
i386/sev: Update checks and information related to reduced-phys-bits
qemu-options.hx: Update the reduced-phys-bits documentation
qapi, i386/sev: Change the reduced-phys-bits value from 5 to 1
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
A guest only ever experiences, at most, 1 bit of reduced physical
addressing. Change the query-sev-capabilities json comment to use 1.
Fixes: 31dd67f684 ("sev/i386: qmp: add query-sev-capabilities command")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <cb96d8e09154533af4b4e6988469bc0b32390b65.1664550870.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In the QEMU QMP Reference Manual, subsection "Block core (VM
unrelated)" is empty. Its contents is at the end of subsection
"Background jobs" instead. That's because qapi/job.json is included
first from qapi/block-core.json, which makes qapi/job.json's
documentation go between qapi/block-core.json's subsection heading and
contents.
In the QEMU Storage Daemon QMP Reference Manual, section "Block
Devices" contains nothing but an empty subsection "Block core (VM
unrelated)". The latter's contents is at the end section "Socket data
types", along with subsection "Block device exports". Subsection
"Background jobs" is at the end of section "Cryptography". All this
is because storage-daemon/qapi/qapi-schema.json includes modules in a
confused order.
Fix both as follows.
Turn subsection "Background jobs" into a section.
Move it before section "Block devices" in the QEMU QMP Reference
Manual, by including qapi/jobs.json right before qapi/block.json.
Reorder include directives in storage-daemon/qapi/qapi-schema.json to
match the order in qapi/qapi-schema.json, so that the QEMU Storage
Daemon QMP Reference Manual's section structure the QEMU QMP Reference
Manual's.
In the QEMU QMP Reference Manual, qapi/cryptodev.json's documentation
is at the end of section "Virtio devices". That's because it lacks a
section heading, and therefore gets squashed into whatever section
happens to precede it.
Add section heading so it's in section "Cryptography devices".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230425064223.820979-17-armbru@redhat.com>
Section tags are case sensitive and end with a colon. Screwing up
either gets them interpreted as ordinary paragraph. Fix a few.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-15-armbru@redhat.com>
MemoryDeviceInfoKind, NetClientDriver, and GuestPanicAction mention
some members only in ad hoc since documentation. The generated
documentation shows these members as "Not documented".
Replace by formal member documentation.
Add actual documentation text for the GuestPanicAction members, to
match existing member documentation there. For the others, merely
move existing "since" information.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-14-armbru@redhat.com>
Member / argument documentation of BlockdevAmendOptionsQcow2,
job-resume, and RDMA_GID_STATUS_CHANGED is parsed as ordinary text due
to missing colon or space before the colon. The generated
documentation shows these members / arguments as "Not documented".
The fix is obvious: add missing colons, delete extra spaces.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-13-armbru@redhat.com>
rST parses something like
first line
second line
as a definition list item, where "first line" is the term being
defined by "second line".
This bites us in a couple of places. Here's one:
# @bps_max: total throughput limit during bursts,
# in bytes (Since 1.7)
scripts/qapi/parser.py parses this into an "argument section" with
name "bps_max" and text
total throughput limit during bursts,
in bytes (Since 1.7)
docs/sphinx/qapidoc.py duly passes the text to the rST parser, which
parses it as another definition list. Comes out as nested
definitions: term "bps_max: int (optional)" defined as term "total
throughput limit during bursts," defined as "in bytes (Since 1.7)".
rST truly is the Perl of ASCII-based markups.
Fix by deleting the extra indentation.
Fixes: 26ec4e53f2 (qapi: Fix indent level on doc comments in json files)
Fixes: c0ac533b6f (qapi: Stop using whitespace for alignment in comments)
Fixes: 81ad2964e9 (net/vmnet: add vmnet backends to qapi/net)
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230425064223.820979-11-armbru@redhat.com>
Peter Maydell's commit 100cc4fe0f explains:
rST insists on a blank line before and after a bulleted list [...]
Add some extra blank lines in the doc comments so they're
acceptable rST input.
It missed one in qapi/trace.json.
Paolo Bonzini later added another instance in qapi/stats.json,
providing further, if unintended, evidence for his quip that rST is
the Perl of ASCII-based markups.
Both are parsed as ordinary paragraph, resulting in garbled output.
John Snow missed the need for a blank line when converting
docs/devel/qapi-code-gen.txt to rST.
Add the blank lines we need to get the bullet lists recognized as
such.
Kevin Wolf and Lukas Straub added two more, but indented. Sphinx
recognizes them as (indented) bullet lists. The indentation looks
slightly off.
Insert a blank line and delete the extra indentation.
Fixes: 100cc4fe0f (qapi: Add blank lines before bulleted lists)
Fixes: 467ef823d8 (qmp: add filtering of statistics by target vCPU)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-10-armbru@redhat.com>
[Fix of docs/devel/qapi-code-gen.rst squashed, commit message adjusted]
Documentation section "Stability Considerations" dates back to the
early days of QMP (commit 82a56f0d83 (Monitor: Introduce the
qmp-commands.hx file)). It became largely misleading years ago.
Delete it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-9-armbru@redhat.com>
A few examples neglect to prefix QMP input with '->'. Fix that.
Two examples have extra space after '<-'. Delete it.
A few examples neglect to show output. Provide some. The example
output for query-vcpu-dirty-limit could use further improvement. Add
a TODO comment.
Use "Examples:" instead of "Example:" where multiple examples are
given.
One example section numbers its two examples. Not done elsewhere;
drop.
Another example section separates them with "or". Likewise.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-8-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Documentation suggests @foo is merely shorthand for ``foo``. It's
not, it carries additional meaning: it's a reference to a QAPI schema
name.
Reword the documentation to spell that out.
Fix up the few ``foo`` that should be @foo.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-7-armbru@redhat.com>
Commit 81cbfd5088 (block: remove dirty bitmaps 'status' field)
removed deprecated BlockDirtyInfo member @status. It neglected to
remove references to its enumeration values from the documentation of
its replacements. Do that now.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20230425064223.820979-6-armbru@redhat.com>
Commit de253f1491 (qmp: switch to the new error format on the
wire) removed most error classes. Several later commits mistakenly
mentioned them in documentation. Replace them by the actual error
class there.
Fixes: 44e3e053af (qmp: add interface blockdev-snapshot-delete-internal-sync)
Fixes: f323bc9e8b (qmp: add interface blockdev-snapshot-internal-sync)
Fixes: ba1c048a8f (qapi: Introduce add-fd, remove-fd, query-fdsets)
Fixes: ed61fc10e8 (QAPI: add command for live block commit, 'block-commit')
Fixes: e4c8f004c5 (qapi: convert sendkey)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230425064223.820979-5-armbru@redhat.com>
query-cpu-definitions returns a list of CpuDefinitionInfo, but
documentation claims CpuDefInfo, which doesn't exist.
query-migrate-capabilities returns a list of
MigrationCapabilityStatus, but documentation claims
MigrationCapabilitiesStatus, which doesn't exist.
balloon and query-balloon can fail with KVMMissingCap, but
documentation claims KvmMissingCap, which doesn't exist.
Fix the documentation.
Fixes: e4e31c6324 (qapi: add query-cpu-definitions command (v2))
Fixes: bbf6da32b5 (Add migration capabilities)
Fixes: d72f326431 (qapi: Convert balloon)
Fixes: 96637bcdf9 (qapi: Convert query-balloon)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230425064223.820979-4-armbru@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
It has nothing to do with migration, except for the "migrate" in the
name of the command. Move it with the rest of the ui commands.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
There should be no paths from a coroutine_fn to aio_poll, however in
practice coroutine_mixed_fn will call aio_poll in the !qemu_in_coroutine()
path. By marking mixed functions, we can track accurately the call paths
that execute entirely in coroutine context, and find more missing
coroutine_fn markers. This results in more accurate checks that
coroutine code does not end up blocking.
If the marking were extended transitively to all functions that call
these ones, static analysis could be done much more efficiently.
However, this is a start and makes it possible to use vrc's path-based
searches to find potential bugs where coroutine_fns call blocking functions.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
To be able to use the function keys F13 to F24 these should be defined in de keycodemapdb and added to the qapi.
The keycodemapdb is updated in its own repository, this patch enables the use of those keys within qemu.
Signed-off-by: Willem van de Velde <williamvdvelde@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently, the function will simply fail if ancillary fds are not
provided, for ex on unsupported platforms.
This changes the failure from:
{"error": {"class": "GenericError", "desc": "No file descriptor
supplied via SCM_RIGHTS"}}
to:
{"error": {"class": "CommandNotFound", "desc": "The command getfd
has not been found"}}
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
A process with enough capabilities can duplicate a socket to QEMU. Add a
QMP command to import it and add it to the monitor fd list, so it can be
later used by other commands.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230306122751.2355515-9-marcandre.lureau@redhat.com>
Whether it is SPICE, VNC, D-Bus, or the socket chardev, they all
actually expect a socket kind or will fail in different ways at runtime.
Throw an error early if the given 'add_client' fd is not a socket, and
close it to avoid leaks.
This allows to replace the close() call with a more correct & portable
closesocket() version.
(this will allow importing sockets on Windows with a specialized command
in the following patch, while keeping the remaining monitor associated
sockets/add_client code & usage untouched)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230306122751.2355515-6-marcandre.lureau@redhat.com>
CXL uses PCI AER Internal errors to signal to the host that an error has
occurred. The host can then read more detailed status from the CXL RAS
capability.
For uncorrectable errors: support multiple injection in one operation
as this is needed to reliably test multiple header logging support in an
OS. The equivalent feature doesn't exist for correctable errors, so only
one error need be injected at a time.
Note:
- Header content needs to be manually specified in a fashion that
matches the specification for what can be in the header for each
error type.
Injection via QMP:
{ "execute": "qmp_capabilities" }
...
{ "execute": "cxl-inject-uncorrectable-errors",
"arguments": {
"path": "/machine/peripheral/cxl-pmem0",
"errors": [
{
"type": "cache-address-parity",
"header": [ 3, 4]
},
{
"type": "cache-data-parity",
"header": [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31]
},
{
"type": "internal",
"header": [ 1, 2, 4]
}
]
}}
...
{ "execute": "cxl-inject-correctable-error",
"arguments": {
"path": "/machine/peripheral/cxl-pmem0",
"type": "physical"
} }
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230302133709.30373-9-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Now we can use "query-stats" QMP command to query statistics of
crypto devices. (Originally this was designed to show statistics
by '{"execute": "query-cryptodev"}'. Daniel Berrangé suggested that
querying configuration info by "query-cryptodev", and querying
runtime performance info by "query-stats". This makes sense!)
Example:
~# virsh qemu-monitor-command vm '{"execute": "query-stats", \
"arguments": {"target": "cryptodev"} }' | jq
{
"return": [
{
"provider": "cryptodev",
"stats": [
{
"name": "asym-verify-bytes",
"value": 7680
},
...
{
"name": "asym-decrypt-ops",
"value": 32
},
{
"name": "asym-encrypt-ops",
"value": 48
}
],
"qom-path": "/objects/cryptodev0" # support asym only
},
{
"provider": "cryptodev",
"stats": [
{
"name": "asym-verify-bytes",
"value": 0
},
...
{
"name": "sym-decrypt-bytes",
"value": 5376
},
...
],
"qom-path": "/objects/cryptodev1" # support asym/sym
}
],
"id": "libvirt-422"
}
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-12-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add 'throttle-bps' and 'throttle-ops' limitation to set QoS. The
two arguments work with both QEMU command line and QMP command.
Example of QEMU command line:
-object cryptodev-backend-builtin,id=cryptodev1,throttle-bps=1600,\
throttle-ops=100
Example of QMP command:
virsh qemu-monitor-command buster --hmp qom-set /objects/cryptodev1 \
throttle-ops 100
or cancel limitation:
virsh qemu-monitor-command buster --hmp qom-set /objects/cryptodev1 \
throttle-ops 0
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-11-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Introduce cryptodev service type in cryptodev.json, then apply this
to related codes. Now we can remove VIRTIO_CRYPTO_SERVICE_xxx
dependence from QEMU cryptodev.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-5-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Introduce cryptodev alg type in cryptodev.json, then apply this to
related codes, and drop 'enum CryptoDevBackendAlgType'.
There are two options:
1, { 'enum': 'QCryptodevBackendAlgType',
'prefix': 'CRYPTODEV_BACKEND_ALG',
'data': ['sym', 'asym']}
Then we can keep 'CRYPTODEV_BACKEND_ALG_SYM' and avoid lots of
changes.
2, changes in this patch(with prefix 'QCRYPTODEV_BACKEND_ALG').
To avoid breaking the rule of QAPI, use 2 here.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-4-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Introduce QCryptodevBackendType in cryptodev.json, also apply this to
related codes. Then we can drop 'enum CryptoDevBackendOptionsType'.
Note that `CRYPTODEV_BACKEND_TYPE_NONE` is *NOT* used by anywhere, so
drop it(no 'none' enum in QCryptodevBackendType).
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-2-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This adds support for emulating Xen under Linux/KVM, based on kernel
patches which have been present since Linux v5.12. As with the kernel
support, it's derived from work started by João Martins of Oracle in
2018.
This series just adds the basic platform support — CPUID, hypercalls,
event channels, a stub of XenStore.
A full single-tenant internal implementation of XenStore, and patches
to make QEMU's Xen PV drivers work with this Xen emulation, are waiting
in the wings to be submitted in a follow-on patch series.
As noted in the documentation, it's enabled by setting the xen-version
property on the KVM accelerator, e.g.:
qemu-system-x86_64 -serial mon:stdio -M q35 -display none -m 1G -smp 2 \
-accel kvm,xen-version=0x4000e,kernel-irqchip=split \
-kernel vmlinuz-6.0.7-301.fc37.x86_64 \
-append "console=ttyS0 root=/dev/sda1" \
-drive file=/var/lib/libvirt/images/fedora28.qcow2,if=none,id=disk \
-device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.0
Even before this was merged, we've already been using it to find and fix
bugs in the Linux kernel Xen guest support:
https://lore.kernel.org/all/4bffa69a949bfdc92c4a18e5a1c3cbb3b94a0d32.camel@infradead.org/https://lore.kernel.org/all/871qnunycr.ffs@tglx/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Report which machine types support ACPI so that management applications
can properly use the 'acpi' property even on platforms such as ARM where
support for ACPI depends on the machine type and thus checking presence
of '-machine acpi=' in 'query-command-line-options' is insufficient.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <537625d3e25d345052322c42ca19812b98b4f49a.1677571792.git.pkrempa@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Specifically add listing, injection of event channels.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Starting from ceph Reef, RBD has built-in support for layered encryption,
where each ancestor image (in a cloned image setting) can be possibly
encrypted using a unique passphrase.
A new function, rbd_encryption_load2, was added to librbd API.
This new function supports an array of passphrases (via "spec" structs).
This commit extends the qemu rbd driver API to use this new librbd API,
in order to support this new layered encryption feature.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Message-Id: <20230129113120.722708-4-oro@oro.sl.cloud9.ibm.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Ceph RBD encryption API required specifying the encryption format
for loading encryption. The supported formats were LUKS (v1) and LUKS2.
Starting from Reef release, RBD also supports loading with "luks-any" format,
which works for both versions of LUKS.
This commit extends the qemu rbd driver API to enable qemu users to use
this luks-any wildcard format.
Signed-off-by: Or Ozeri <oro@il.ibm.com>
Message-Id: <20230129113120.722708-3-oro@oro.sl.cloud9.ibm.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In stream mode, if the server shuts down there is currently
no way to reconnect the client to a new server without removing
the NIC device and the netdev backend (or to reboot).
This patch introduces a reconnect option that specifies a delay
to try to reconnect with the same parameters.
Add a new test in qtest to test the reconnect option and the
connect/disconnect events.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Introduce interface query-migrationthreads. The interface is used
to query information about migration threads and returns with
migration thread's name and its id.
Introduce threadinfo.c to manage threads with migration.
Signed-off-by: Jiang Jiacheng <jiangjiacheng@huawei.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
- qemu-img info: Show protocol-level information
- Move more functions to coroutines
- Make coroutine annotations ready for static analysis
- qemu-img: Fix exit code for errors closing the image
- qcow2 bitmaps: Fix theoretical corruption in error path
- pflash: Only load non-zero parts of backend image to save memory
- Code cleanup and test case improvements
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging
Block layer patches
- qemu-img info: Show protocol-level information
- Move more functions to coroutines
- Make coroutine annotations ready for static analysis
- qemu-img: Fix exit code for errors closing the image
- qcow2 bitmaps: Fix theoretical corruption in error path
- pflash: Only load non-zero parts of backend image to save memory
- Code cleanup and test case improvements
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# gpg: Signature made Wed 01 Feb 2023 16:00:53 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: (38 commits)
qemu-img: Change info key names for protocol nodes
qemu-img: Let info print block graph
iotests/106, 214, 308: Read only one size line
iotests: Filter child node information
block/qapi: Add indentation to bdrv_node_info_dump()
block/qapi: Introduce BlockGraphInfo
block/qapi: Let bdrv_query_image_info() recurse
qemu-img: Use BlockNodeInfo
block: Split BlockNodeInfo off of ImageInfo
block/vmdk: Change extent info type
block/file: Add file-specific image info
block: Improve empty format-specific info dump
block/nbd: Add missing <qemu/bswap.h> include
block: Rename bdrv_load/save_vmstate() to bdrv_co_load/save_vmstate()
block: Convert bdrv_debug_event() to co_wrapper_mixed
block: Convert bdrv_lock_medium() to co_wrapper
block: Convert bdrv_eject() to co_wrapper
block: Convert bdrv_get_info() to co_wrapper_mixed
block: Convert bdrv_get_allocated_file_size() to co_wrapper
block: use bdrv_co_refresh_total_sectors when possible
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For every node in the backing chain, collect its BlockGraphInfo struct
using bdrv_query_block_graph_info(). Print all nodes' information,
indenting child nodes and labelling them with a path constructed from
the child names leading to the node from the root (e.g. /file/file).
Note that we open each image with BDRV_O_NO_BACKING, so its backing
child is omitted from this graph, and thus presented in the previous
manner: By simply concatenating all images' information, separated with
blank lines.
This affects two iotests:
- 065: Here we try to get the format node's format specific information.
The pre-patch code does so by taking all lines from "Format specific
information:" until an empty line. This format specific information
is no longer followed by an empty line, though, but by child node
information, so limit the range by "Child node '/file':".
- 302: Calls qemu_img() for qemu-img info directly, which does not
filter the output, so the child node information ends up in the
output.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-12-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Introduce a new QAPI type BlockGraphInfo and an associated
bdrv_query_block_graph_info() function that recursively gathers
BlockNodeInfo objects through a block graph.
A follow-up patch is going to make "qemu-img info" use this to print
information about all nodes that are (usually implicitly) opened for a
given image file.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-8-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qemu-img info never uses ImageInfo's backing-image field, because it
opens the backing chain one by one with BDRV_O_NO_BACKING, and prints
all backing chain nodes' information consecutively. Use BlockNodeInfo
to make it clear that we only print information about a single node, and
that we are not using the backing-image field.
Notably, bdrv_image_info_dump() does not evaluate the backing-image
field, so we can easily make it take a BlockNodeInfo pointer (and
consequentially rename it to bdrv_node_info_dump()). It makes more
sense this way, because again, the interface now makes it syntactically
clear that backing-image is ignored by this function.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-6-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
ImageInfo sometimes contains flat information, and sometimes it does
not. Split off a BlockNodeInfo struct, which only contains information
about a single node and has no link to the backing image.
We do this so we can extend BlockNodeInfo to a BlockGraphInfo struct,
which has links to all child nodes, not just the backing node. It would
be strange to base BlockGraphInfo on ImageInfo, because then this
extended struct would have two links to the backing node (one in
BlockGraphInfo as one of all the child links, and one in ImageInfo).
Furthermore, it is quite common to ignore the backing-image field
altogether: bdrv_query_image_info() does not set it, and
bdrv_image_info_dump() does not evaluate it. That signals that we
should have different structs for describing a single node and one that
has a link to the backing image.
Still, bdrv_query_image_info() and bdrv_image_info_dump() are not
changed too much in this patch. Follow-up patches will handle them.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-5-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
VMDK's implementation of .bdrv_get_specific_info() returns information
about its extent files, ostensibly in the form of ImageInfo objects.
However, it does not get this information through
bdrv_query_image_info(), but fills only a select few fields with custom
information that does not always match the fields' purposes.
For example, @format, which is supposed to be a block driver name, is
filled with the extent type, e.g. SPARSE or FLAT.
In ImageInfo, @compressed shows whether the data that can be seen in the
image is stored in compressed form or not. For example, a compressed
qcow2 image will store compressed data in its data file, but when
accessing the qcow2 node, you will see normal data. This is not how
VMDK uses the @compressed field for its extent files: Instead, it
signifies whether accessing the extent file will yield compressed data
(which the VMDK driver then (de-)compresses).
Create a new structure to represent the extent information. This allows
us to clarify the fields' meanings, and it clearly shows that these are
not complete ImageInfo objects. (That is, if a user wants an extent
file's ImageInfo object, they will need to query it separately, and will
not get it from ImageInfoSpecificVmdk.extents.)
Note that this removes the last use of ['ImageInfo'] (i.e. an array of
ImageInfo objects), so the QAPI generator will no longer generate
ImageInfoList by default. However, we use it in qemu-img.c, so we need
to create a dummy object to force the generate to create that type,
similarly to DummyForceArrays in machine.json (introduced in commit
9f08c8ec73 ("qapi: Lazy creation of array
types")).
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-4-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add some (optional) information that the file driver can provide for
image files, namely the extent size hint.
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220620162704.80987-3-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Currently the -audiodev accepts any audiodev type regardless of what is
built in to QEMU. An error only occurs later at runtime when a sound
device tries to use the audio backend.
With this change QEMU will immediately reject -audiodev args that are
not compiled into the binary. The QMP schema will also be introspectable
to identify what is compiled in.
This also helps to avoid compiling code that is not required in the
binary. Note: When building the audiodevs as modules, the patch only
compiles out code for modules that we don't build at all.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
[thuth: Rebase, take sndio and dbus devices into account]
Message-Id: <20230123083957.20349-3-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Way back in QEMU 4.0, the -audiodev command line option was introduced
for configuring audio backends. This CLI option does not use QemuOpts
so it is not visible for introspection in 'query-command-line-options',
instead using the QAPI Audiodev type. Unfortunately there is also no
QMP command that uses the Audiodev type, so it is not introspectable
with 'query-qmp-schema' either.
This introduces a 'query-audiodev' command that simply reflects back
the list of configured -audiodev command line options. This alone is
maybe not very useful by itself, but it makes Audiodev introspectable
via 'query-qmp-schema', so that libvirt (and other upper layer tools)
can discover the available audiodevs.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
[thuth: Update for upcoming QEMU v8.0, and use QAPI_LIST_PREPEND]
Message-Id: <20230123083957.20349-2-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Those typos are in files which are used to generate the QEMU manual.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20221110190825.879620-1-sw@weilnetz.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
[thuth: update sentence in can.rst as suggested by Peter]
Signed-off-by: Thomas Huth <thuth@redhat.com>
If configuring with "--disable-system --disable-user --enable-guest-agent"
the linking currently fails with:
qga/qemu-ga.p/commands.c.o: In function `qmp_command_info':
build/../../home/thuth/devel/qemu/qga/commands.c:70: undefined reference to `qmp_command_name'
build/../../home/thuth/devel/qemu/qga/commands.c:71: undefined reference to `qmp_command_is_enabled'
build/../../home/thuth/devel/qemu/qga/commands.c:72: undefined reference to `qmp_has_success_response'
qga/qemu-ga.p/commands.c.o: In function `qmp_guest_info':
build/../../home/thuth/devel/qemu/qga/commands.c:82: undefined reference to `qmp_for_each_command'
qga/qemu-ga.p/commands.c.o: In function `qmp_guest_exec':
build/../../home/thuth/devel/qemu/qga/commands.c:410: undefined reference to `qbase64_decode'
qga/qemu-ga.p/channel-posix.c.o: In function `ga_channel_open':
build/../../home/thuth/devel/qemu/qga/channel-posix.c:214: undefined reference to `unix_listen'
build/../../home/thuth/devel/qemu/qga/channel-posix.c:228: undefined reference to `socket_parse'
build/../../home/thuth/devel/qemu/qga/channel-posix.c:234: undefined reference to `socket_listen'
qga/qemu-ga.p/commands-posix.c.o: In function `qmp_guest_file_write':
build/../../home/thuth/devel/qemu/qga/commands-posix.c:527: undefined reference to `qbase64_decode'
Let's make sure that we also compile and link the required files if
the system emulators have not been enabled.
Message-Id: <20221110083626.31899-1-thuth@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The nvme-io_uring BlockDriver's path option must point at the character
device of an NVMe namespace, not at an image file.
Fixes: fd66dbd424 ("blkio: add libblkio block driver")
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Alberto Faria <afaria@redhat.com>
Message-Id: <20221108142347.1322674-1-afaria@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
lots of acpi rework
first version of biosbits infrastructure
ASID support in vhost-vdpa
core_count2 support in smbios
PCIe DOE emulation
virtio vq reset
HMAT support
part of infrastructure for viommu support in vhost-vdpa
VTD PASID support
fixes, tests all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
pci,pc,virtio: features, tests, fixes, cleanups
lots of acpi rework
first version of biosbits infrastructure
ASID support in vhost-vdpa
core_count2 support in smbios
PCIe DOE emulation
virtio vq reset
HMAT support
part of infrastructure for viommu support in vhost-vdpa
VTD PASID support
fixes, tests all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Signature made Mon 07 Nov 2022 14:27:53 EST
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (83 commits)
checkpatch: better pattern for inline comments
hw/virtio: introduce virtio_device_should_start
tests/acpi: update tables for new core count test
bios-tables-test: add test for number of cores > 255
tests/acpi: allow changes for core_count2 test
bios-tables-test: teach test to use smbios 3.0 tables
hw/smbios: add core_count2 to smbios table type 4
vhost-user: Support vhost_dev_start
vhost: Change the sequence of device start
intel-iommu: PASID support
intel-iommu: convert VTD_PE_GET_FPD_ERR() to be a function
intel-iommu: drop VTDBus
intel-iommu: don't warn guest errors when getting rid2pasid entry
vfio: move implement of vfio_get_xlat_addr() to memory.c
tests: virt: Update expected *.acpihmatvirt tables
tests: acpi: aarch64/virt: add a test for hmat nodes with no initiators
hw/arm/virt: Enable HMAT on arm virt machine
tests: Add HMAT AArch64/virt empty table files
tests: acpi: q35: update expected blobs *.hmat-noinitiators expected HMAT:
tests: acpi: q35: add test for hmat nodes without initiators
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Most of them were found and fixed using codespell.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221030105944.311940-1-sw@weilnetz.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The items of qapi/virtio.json are introduced at a5ebce3857. They will be
in the version 7.2 not 7.1.
Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20221101014647.3000801-1-hhan@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
cryptodev: Added a new type of backend named lkcf-backend for
cryptodev. This backend upload asymmetric keys to linux kernel,
and let kernel do the accelerations if possible.
The lkcf stands for Linux Kernel Cryptography Framework.
Signed-off-by: lei he <helei.sig11@bytedance.com>
Message-Id: <20221008085030.70212-5-helei.sig11@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The nvme-io_uring driver expects a character special file such as
/dev/ng0n1. Follow the convention of having a "filename" option when a
regular file is expected, and a "path" option otherwise.
This makes io_uring the only libblkio-based driver with a "filename"
option, as it accepts a regular file (even though it can also take a
block special file).
Signed-off-by: Alberto Faria <afaria@redhat.com>
Message-id: 20221028233854.839933-1-afaria@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The netdev reports NETDEV_STREAM_CONNECTED event when the backend
is connected, and NETDEV_STREAM_DISCONNECTED when it is disconnected.
The NETDEV_STREAM_CONNECTED event includes the destination address.
This allows a system manager like libvirt to detect when the server
fails.
For instance with passt:
{ 'execute': 'qmp_capabilities' }
{ "return": { } }
{ "timestamp": { "seconds": 1666341395, "microseconds": 505347 },
"event": "NETDEV_STREAM_CONNECTED",
"data": { "netdev-id": "netdev0",
"addr": { "path": "/tmp/passt_1.socket", "type": "unix" } } }
[killing passt here]
{ "timestamp": { "seconds": 1666341430, "microseconds": 968694 },
"event": "NETDEV_STREAM_DISCONNECTED",
"data": { "netdev-id": "netdev0" } }
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com> (QAPI schema)
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com> (QAPI schema)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Copied from socket netdev file and modified to use SocketAddress
to be able to introduce new features like unix socket.
"udp" and "mcast" are squashed into dgram netdev, multicast is detected
according to the IP address type.
"listen" and "connect" modes are managed by stream netdev. An optional
parameter "server" defines the mode (off by default)
The two new types need to be parsed the modern way with -netdev, because
with the traditional way, the "type" field of netdev structure collides with
the "type" field of SocketAddress and prevents the correct evaluation of the
command line option. Moreover the traditional way doesn't allow to use
the same type (SocketAddress) several times with the -netdev option
(needed to specify "local" and "remote" addresses).
The previous commit paved the way for parsing the modern way, but
omitted one detail: how to pick modern vs. traditional, in
netdev_is_modern().
We want to pick based on the value of parameter "type". But how to
extract it from the option argument?
Parsing the option argument, either the modern or the traditional way,
extracts it for us, but only if parsing succeeds.
If parsing fails, there is no good option. No matter which parser we
pick, it'll be the wrong one for some arguments, and the error
reporting will be confusing.
Fortunately, the traditional parser accepts *anything* when called in
a certain way. This maximizes our chance to extract the value of
"type", and in turn minimizes the risk of confusing error reporting.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Similar to other vhost backends, vhostfd can be passed to vhost-vdpa
backend as another parameter to instantiate vhost-vdpa net client.
This would benefit the use case where only open file descriptors, as
opposed to raw vhost-vdpa device paths, are accessible from the QEMU
process.
(qemu) netdev_add type=vhost-vdpa,vhostfd=61,id=vhost-vdpa1
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Snapshot loading only expects to call deterministic handlers, not
non-deterministic ones. So introduce a way of registering handlers that
won't be called when reseting for snapshots.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Message-id: 20221025004327.568476-2-Jason@zx2c4.com
[PMM: updated json doc comment with Markus' text; fixed
checkpatch style nit]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Let's allow for specifying a thread context via the "prealloc-context"
property. When set, preallcoation threads will be crated via the
thread context -- inheriting the same CPU affinity as the thread
context.
Pinning preallcoation threads to CPUs can heavily increase performance
in NUMA setups, because, preallocation from a CPU close to the target
NUMA node(s) is faster then preallocation from a CPU further remote,
simply because of memory bandwidth for initializing memory with zeroes.
This is especially relevant for very large VMs backed by huge/gigantic
pages, whereby preallocation is mandatory.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <20221014134720.168738-7-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Let's make it easier to pin threads created via a ThreadContext to
all host CPUs currently belonging to a given set of host NUMA nodes --
which is the common case.
"node-affinity" is simply a shortcut for setting "cpu-affinity" manually
to the list of host CPUs belonging to the set of host nodes. This property
can only be written.
A simple QEMU example to set the CPU affinity to host node 1 on a system
with two nodes, 24 CPUs each, whereby odd-numbered host CPUs belong to
host node 1:
qemu-system-x86_64 -S \
-object thread-context,id=tc1,node-affinity=1
And we can query the cpu-affinity via HMP/QMP:
(qemu) qom-get tc1 cpu-affinity
[
1,
3,
5,
7,
9,
11,
13,
15,
17,
19,
21,
23,
25,
27,
29,
31,
33,
35,
37,
39,
41,
43,
45,
47
]
We cannot query the node-affinity:
(qemu) qom-get tc1 node-affinity
Error: Insufficient permission to perform this operation
But note that due to dynamic library loading this example will not work
before we actually make use of thread_context_create_thread() in QEMU
code, because the type will otherwise not get registered. We'll wire
this up next to make it work.
Note that if the host CPUs for a host node change due do CPU hot(un)plug
CPU onlining/offlining (i.e., lscpu output changes) after the ThreadContext
was started, the CPU affinity will not get updated.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221014134720.168738-5-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Setting the CPU affinity of QEMU threads is a bit problematic, because
QEMU doesn't always have permissions to set the CPU affinity itself,
for example, with seccomp after initialized by QEMU:
-sandbox enable=on,resourcecontrol=deny
General information about CPU affinities can be found in the man page of
taskset:
CPU affinity is a scheduler property that "bonds" a process to a given
set of CPUs on the system. The Linux scheduler will honor the given CPU
affinity and the process will not run on any other CPUs.
While upper layers are already aware of how to handle CPU affinities for
long-lived threads like iothreads or vcpu threads, especially short-lived
threads, as used for memory-backend preallocation, are more involved to
handle. These threads are created on demand and upper layers are not even
able to identify and configure them.
Introduce the concept of a ThreadContext, that is essentially a thread
used for creating new threads. All threads created via that context
thread inherit the configured CPU affinity. Consequently, it's
sufficient to create a ThreadContext and configure it once, and have all
threads created via that ThreadContext inherit the same CPU affinity.
The CPU affinity of a ThreadContext can be configured two ways:
(1) Obtaining the thread id via the "thread-id" property and setting the
CPU affinity manually (e.g., via taskset).
(2) Setting the "cpu-affinity" property and letting QEMU try set the
CPU affinity itself. This will fail if QEMU doesn't have permissions
to do so anymore after seccomp was initialized.
A simple QEMU example to set the CPU affinity to host CPU 0,1,6,7 would be:
qemu-system-x86_64 -S \
-object thread-context,id=tc1,cpu-affinity=0-1,cpu-affinity=6-7
And we can query it via HMP/QMP:
(qemu) qom-get tc1 cpu-affinity
[
0,
1,
6,
7
]
But note that due to dynamic library loading this example will not work
before we actually make use of thread_context_create_thread() in QEMU
code, because the type will otherwise not get registered. We'll wire
this up next to make it work.
In general, the interface behaves like pthread_setaffinity_np(): host
CPU numbers that are currently not available are ignored; only host CPU
numbers that are impossible with the current kernel will fail. If the
list of host CPU numbers does not include a single CPU that is
available, setting the CPU affinity will fail.
A ThreadContext can be reused, simply by reconfiguring the CPU affinity.
Note that the CPU affinity of previously created threads will not get
adjusted.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221014134720.168738-4-david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
libblkio (https://gitlab.com/libblkio/libblkio/) is a library for
high-performance disk I/O. It currently supports io_uring,
virtio-blk-vhost-user, and virtio-blk-vhost-vdpa with additional drivers
under development.
One of the reasons for developing libblkio is that other applications
besides QEMU can use it. This will be particularly useful for
virtio-blk-vhost-user which applications may wish to use for connecting
to qemu-storage-daemon.
libblkio also gives us an opportunity to develop in Rust behind a C API
that is easy to consume from QEMU.
This commit adds io_uring, nvme-io_uring, virtio-blk-vhost-user, and
virtio-blk-vhost-vdpa BlockDrivers to QEMU using libblkio. It will be
easy to add other libblkio drivers since they will share the majority of
code.
For now I/O buffers are copied through bounce buffers if the libblkio
driver requires it. Later commits add an optimization for
pre-registering guest RAM to avoid bounce buffers.
The syntax is:
--blockdev io_uring,node-name=drive0,filename=test.img,readonly=on|off,cache.direct=on|off
--blockdev nvme-io_uring,node-name=drive0,filename=/dev/ng0n1,readonly=on|off,cache.direct=on
--blockdev virtio-blk-vhost-vdpa,node-name=drive0,path=/dev/vdpa...,readonly=on|off,cache.direct=on
--blockdev virtio-blk-vhost-user,node-name=drive0,path=vhost-user-blk.sock,readonly=on|off,cache.direct=on
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20221013185908.1297568-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
To save the FDT blob we have the '-machine dumpdtb=<file>' property.
With this property set, the machine saves the FDT in <file> and exit.
The created file can then be converted to plain text dts format using
'dtc'.
There's nothing particularly sophisticated into saving the FDT that
can't be done with the machine at any state, as long as the machine has
a valid FDT to be saved.
The 'dumpdtb' command receives a 'filename' parameter and, if the FDT is
available via current_machine->fdt, save it in dtb format to 'filename'.
In short, this is a '-machine dumpdtb' that can be fired on demand via
QMP/HMP.
This command will always be executed in-band (i.e. holding BQL),
avoiding potential race conditions with machines that might change the
FDT during runtime (e.g. PowerPC 'pseries' machine).
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Alistair Francis <alistair.francis@wdc.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220926173855.1159396-2-danielhb413@gmail.com>
The patch adds "show_menubar" command line option for GTK UI similar to
"show_tabs". This option allows to hide menu bar initially, it still can
be toggled by shortcut and other shortcuts still work.
Signed-off-by: Bryce Mills <brycemills@proton.me>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <NWO_zx1CT5Aj9vAXsRlqBppXd63gcKwL9V1qM1Meh36M_9tCw-EsCnfpvONXhHjmtKIUoSuCy9OO6cHS7M8b0oHBOCZG6f1jZ4Q2tqgI2Qo=@proton.me>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
There are cases that malicious virtual machine can cause CPU stuck (due
to event windows don't open up), e.g., infinite loop in microcode when
nested #AC (CVE-2015-5307). No event window means no event (NMI, SMI and
IRQ) can be delivered. It leads the CPU to be unavailable to host or
other VMs. Notify VM exit is introduced to mitigate such kind of
attacks, which will generate a VM exit if no event window occurs in VM
non-root mode for a specified amount of time (notify window).
A new KVM capability KVM_CAP_X86_NOTIFY_VMEXIT is exposed to user space
so that the user can query the capability and set the expected notify
window when creating VMs. The format of the argument when enabling this
capability is as follows:
Bit 63:32 - notify window specified in qemu command
Bit 31:0 - some flags (e.g. KVM_X86_NOTIFY_VMEXIT_ENABLED is set to
enable the feature.)
Users can configure the feature by a new (x86 only) accel property:
qemu -accel kvm,notify-vmexit=run|internal-error|disable,notify-window=n
The default option of notify-vmexit is run, which will enable the
capability and do nothing if the exit happens. The internal-error option
raises a KVM internal error if it happens. The disable option does not
enable the capability. The default value of notify-window is 0. It is valid
only when notify-vmexit is not disabled. The valid range of notify-window
is non-negative. It is even safe to set it to zero since there's an
internal hardware threshold to be added to ensure no false positive.
Because a notify VM exit may happen with VM_CONTEXT_INVALID set in exit
qualification (no cases are anticipated that would set this bit), which
means VM context is corrupted. It would be reflected in the flags of
KVM_EXIT_NOTIFY exit. If KVM_NOTIFY_CONTEXT_INVALID bit is set, raise a KVM
internal error unconditionally.
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20220929072014.20705-5-chenyi.qiang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This new command shows the information of a VirtQueue element.
[Note: Up until v10 of this patch series, virtio.json had many (15+)
enums defined (e.g. decoded device features, statuses, etc.). In v10
most of these enums were removed and replaced with string literals.
By doing this we get (1) simpler schema, (2) smaller generated code,
and (3) less maintenance burden for when new things are added (e.g.
devices, device features, etc.).]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1660220684-24909-6-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
These new commands show the internal status of a VirtIODevice's
VirtQueue and a vhost device's vhost_virtqueue (if active).
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1660220684-24909-5-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Display feature names instead of bitmaps for host, guest, and
backend for VirtIODevices.
Display status names instead of bitmaps for VirtIODevices.
Display feature names instead of bitmaps for backend, protocol,
acked, and features (hdev->features) for vhost devices.
Decode features according to device ID. Decode statuses
according to configuration status bitmap (config_status_map).
Decode vhost user protocol features according to vhost user
protocol bitmap (vhost_user_protocol_map).
Transport features are on the first line. Undecoded bits (if
any) are stored in a separate field.
[Jonah: Several changes made to this patch from prev. version (v14):
- Moved all device features mappings to hw/virtio/virtio.c
- Renamed device features mappings (less generic)
- Generalized @FEATURE_ENTRY macro for all device mappings
- Virtio device feature map definitions include descriptions of
feature bits
- Moved @VHOST_USER_F_PROTOCOL_FEATURES feature bit from transport
feature map to vhost-user-supported device feature mappings
(blk, fs, i2c, rng, net, gpu, input, scsi, vsock)
- New feature bit added for virtio-vsock: @VIRTIO_VSOCK_F_SEQPACKET
- New feature bit added for virtio-iommu: @VIRTIO_IOMMU_F_BYPASS_CONFIG
- New feature bit added for virtio-mem: @VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE
- New virtio transport feature bit added: @VIRTIO_F_IN_ORDER
- Added device feature map definition for virtio-rng
]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1660220684-24909-4-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This new command shows the status of a VirtIODevice, including
its corresponding vhost device's status (if active).
Next patch will improve output by decoding feature bits, including
vhost device's feature bits (backend, protocol, acked, and features).
Also will decode status bits of a VirtIODevice.
[Jonah: From patch v12; added a check to @virtio_device_find to ensure
synchronicity between @virtio_list and the devices in the QOM
composition tree.]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1660220684-24909-3-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This new command lists all the instances of VirtIODevices with
their canonical QOM path and name.
[Jonah: @virtio_list duplicates information that already exists in
the QOM composition tree. However, extracting necessary information
from this tree seems to be a bit convoluted.
Instead, we still create our own list of realized virtio devices
but use @qmp_qom_get with the device's canonical QOM path to confirm
that the device exists and is realized. If the device exists but
is actually not realized, then we remove it from our list (for
synchronicity to the QOM composition tree).
Also, the QMP command @x-query-virtio is redundant as @qom-list
and @qom-get are sufficient to search '/machine/' for realized
virtio devices. However, @x-query-virtio is much more convenient
in listing realized virtio devices.]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1660220684-24909-2-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This reverts commit b652293832.
Kevin Wolf NAKed this patch, because:
'file' is a required member (defined in BlockdevOptionsGenericFormat),
removing it makes the example invalid. 'data-file' is only an additional
optional member to be used for external data files (i.e. when the guest
data is kept separate from the metadata in the .qcow2 file).
However, it had already been merged then. Revert.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220930171908.846769-1-armbru@redhat.com>
Reviewed-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
sndio is the native API used by OpenBSD, although it has been ported to
other *BSD's and Linux (packages for Ubuntu, Debian, Void, Arch, etc.).
Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Alexandre Ratchov <alex@caoua.org>
Reviewed-by: Volker Rümelin <vr_qemu@t-online.de>
Tested-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <YxibXrWsrS3XYQM3@vm1.arverb.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
I've used real timestamp and changing them one by one so they would
not be all equal.
Problem was noticed when using the example as a test case for Go
bindings.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-11-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The example return type has the wrong member name. Fix it.
Problem was noticed when using the example as a test case for Go
bindings.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-10-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The examples use "qcow2" driver with the wrong member name for
BlockdevRef alternate type. This patch changes all wrong member names
from "file" to "data-file" which is the correct member name in
BlockdevOptionsQcow2 for the BlockdevRef field.
Problem was noticed when using the example as a test case for Go
bindings.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-9-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output was missing ',' delimiter. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-8-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output is missing a ',' delimiter and it has an extra ending
curly bracket. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-7-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output has an extra ending curly bracket. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-6-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output is missing ',' delimiter. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-5-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output is missing closing curly brackets. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-4-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output has an extra ',' delimiter in member "websocket" and it
lacks it in "family" member. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-3-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output has an extra ',' delimiter. Fix it.
Problem was noticed when trying to load the example into python's json
library.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220901085840.22520-2-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Currently QEMU exits with code 0 on both panic an shutdown. For tests
it is useful to return 1 on panic, so that it counts as a test
failure.
Introduce a new exit-failure PanicAction that makes main() return
EXIT_FAILURE. Tests can use -action panic=exit-failure option to
activate this behavior.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20220725223746.227063-2-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This replaces yesterdays pull and:
a) Fixes some test build errors without TLS
b) Reenabled the zlib acceleration on s390
now that we have Ilya's fix
Hyman's dirty page rate limit set
Ilya's fix for zlib vs migration
Peter's postcopy-preempt
Cleanup from Dan
zero-copy tidy ups from Leo
multifd doc fix from Juan
Revert disable of zlib acceleration on s390x
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge tag 'pull-migration-20220720c' of https://gitlab.com/dagrh/qemu into staging
Migration pull 2022-07-20
This replaces yesterdays pull and:
a) Fixes some test build errors without TLS
b) Reenabled the zlib acceleration on s390
now that we have Ilya's fix
Hyman's dirty page rate limit set
Ilya's fix for zlib vs migration
Peter's postcopy-preempt
Cleanup from Dan
zero-copy tidy ups from Leo
multifd doc fix from Juan
Revert disable of zlib acceleration on s390x
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
# gpg: Signature made Wed 20 Jul 2022 12:18:56 BST
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* tag 'pull-migration-20220720c' of https://gitlab.com/dagrh/qemu: (30 commits)
Revert "gitlab: disable accelerated zlib for s390x"
migration: Avoid false-positive on non-supported scenarios for zero-copy-send
multifd: Document the locking of MultiFD{Send/Recv}Params
migration/multifd: Report to user when zerocopy not working
Add dirty-sync-missed-zero-copy migration stat
QIOChannelSocket: Fix zero-copy flush returning code 1 when nothing sent
migration: remove unreachable code after reading data
tests: Add postcopy preempt tests
tests: Add postcopy tls recovery migration test
tests: Add postcopy tls migration test
tests: Move MigrateCommon upper
migration: Respect postcopy request order in preemption mode
migration: Enable TLS for preempt channel
migration: Export tls-[creds|hostname|authz] params to cmdline too
migration: Add helpers to detect TLS capability
migration: Add property x-postcopy-preempt-break-huge
migration: Create the postcopy preempt channel asynchronously
migration: Postcopy recover with preempt enabled
migration: Postcopy preemption enablement
migration: Postcopy preemption preparation on channel creation
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220711211112.18951-3-leobras@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Firstly, postcopy already preempts precopy due to the fact that we do
unqueue_page() first before looking into dirty bits.
However that's not enough, e.g., when there're host huge page enabled, when
sending a precopy huge page, a postcopy request needs to wait until the whole
huge page that is sending to finish. That could introduce quite some delay,
the bigger the huge page is the larger delay it'll bring.
This patch adds a new capability to allow postcopy requests to preempt existing
precopy page during sending a huge page, so that postcopy requests can be
serviced even faster.
Meanwhile to send it even faster, bypass the precopy stream by providing a
standalone postcopy socket for sending requested pages.
Since the new behavior will not be compatible with the old behavior, this will
not be the default, it's enabled only when the new capability is set on both
src/dst QEMUs.
This patch only adds the capability itself, the logic will be added in follow
up patches.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20220707185342.26794-2-peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle virtual CPU until it reachs the quota
dirty page rate given by user.
Introduce qmp commands "set-vcpu-dirty-limit",
"cancel-vcpu-dirty-limit", "query-vcpu-dirty-limit"
to enable, disable, query dirty page limit for virtual CPU.
Meanwhile, introduce corresponding hmp commands
"set_vcpu_dirty_limit", "cancel_vcpu_dirty_limit",
"info vcpu_dirty_limit" so the feature can be more usable.
"query-vcpu-dirty-limit" success depends on enabling dirty
page rate limit, so just add it to the list of skipped
command to ensure qmp-cmd-test run successfully.
Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <4143f26706d413dd29db0b672fe58b3d3fbe34bc.1656177590.git.huangy81@chinatelecom.cn>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Finally offering the possibility to enable SVQ from the command line.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
The patch adds "show_tabs" command line option for GTK ui similar to
"grab_on_hover". This option allows tabbed view mode to not have to be
enabled by hand at each start of the VM.
Signed-off-by: Felix "xq" Queißner <xq@random-projects.net>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220712133753.18937-1-xq@random-projects.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The next version of Linux will introduce boolean statistics, which
can only have 0 or 1 values. Support them in the schema and in
the HMP command.
Suggested-by: Amneesh Singh <natto@weirdnatto.in>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In some scenarios, when copy-before-write operations lasts too long
time, it's better to cancel it.
Most useful would be to use the new option together with
on-cbw-error=break-snapshot: this way if cbw operation takes too long
time we'll just cancel backup process but do not disturb the guest too
much.
Note the tricky point of realization: we keep additional point in
bs->in_flight during block_copy operation even if it's timed-out.
Background "cancelled" block_copy operations will finish at some point
and will want to access state. We should care to not free the state in
.bdrv_close() earlier.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
[vsementsov: use bdrv_inc_in_flight()/bdrv_dec_in_flight() instead of
direct manipulation on bs->in_flight]
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Inspired by Julia Lawall's fixing of Linux
kernel comments, I looked at qemu, although I did it manually.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Message-Id: <20220614104045.85728-2-dgilbert@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Currently, behavior on copy-before-write operation failure is simple:
report error to the guest.
Let's implement alternative behavior: break the whole copy-before-write
process (and corresponding backup job or NBD client) but keep guest
working. It's needed if we consider guest stability as more important.
The realisation is simple: on copy-before-write failure we set
s->snapshot_ret and continue guest operations. s->snapshot_ret being
set will lead to all further snapshot API requests. Note that all
in-flight snapshot-API requests may still success: we do wait for them
on BREAK_SNAPSHOT-failure path in cbw_do_copy_before_write().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Currently we use 'id' option as the name of VDUSE device.
It's a bit confusing since we use one value for two different
purposes: the ID to identfy the export within QEMU (must be
distinct from any other exports in the same QEMU process, but
can overlap with names used by other processes), and the VDUSE
name to uniquely identify it on the host (must be distinct from
other VDUSE devices on the same host, but can overlap with other
export types like NBD in the same process). To make it clear,
this patch adds a separate 'name' option to specify the VDUSE
name for the vduse-blk export instead.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Message-Id: <20220614051532.92-7-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add a 'serial' option to allow user to specify this value
explicitly. And the default value is changed to an empty
string as what we did in "hw/block/virtio-blk.c".
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Message-Id: <20220614051532.92-6-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This implements a VDUSE block backends based on
the libvduse library. We can use it to export the BDSs
for both VM and container (host) usage.
The new command-line syntax is:
$ qemu-storage-daemon \
--blockdev file,node-name=drive0,filename=test.img \
--export vduse-blk,node-name=drive0,id=vduse-export0,writable=on
After the qemu-storage-daemon started, we need to use
the "vdpa" command to attach the device to vDPA bus:
$ vdpa dev add name vduse-export0 mgmtdev vduse
Also the device must be removed via the "vdpa" command
before we stop the qemu-storage-daemon.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220523084611.91-7-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When originally implemented, zero_copy_send was designed as a Migration
paramenter.
But taking into account how is that supposed to work, and how
the difference between a capability and a parameter, it only makes sense
that zero-copy-send would work better as a capability.
Taking into account how recently the change got merged, it was decided
that it's still time to make it right, and convert zero_copy_send into
a Migration capability.
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
dgilbert: always define the capability, even on non-Linux but error if
set; avoids build problems with the capability
* virtio reset cleanups
* build system cleanups
* fix Cirrus CI
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* statistics subsystem
* virtio reset cleanups
* build system cleanups
* fix Cirrus CI
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# gpg: Signature made Wed 15 Jun 2022 02:12:36 AM PDT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [undefined]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (21 commits)
build: include pc-bios/ part in the ROMS variable
meson: put cross compiler info in a separate section
q35：Enable TSEG only when G_SMRAME and TSEG_EN both enabled
build: fix check for -fsanitize-coverage-allowlist
tests/vm: allow running tests in an unconfigured source tree
configure: cleanup -fno-pie detection
configure: update list of preserved environment variables
virtio-mmio: cleanup reset
virtio: stop ioeventfd on reset
virtio-mmio: stop ioeventfd on legacy reset
s390x: simplify virtio_ccw_reset_virtio
block: add more commands to preconfig mode
hmp: add filtering of statistics by name
qmp: add filtering of statistics by name
hmp: add filtering of statistics by provider
qmp: add filtering of statistics by provider
hmp: add basic "info stats" implementation
cutils: add functions for IEC and SI prefixes
qmp: add filtering of statistics by target vCPU
kvm: Support for querying fd-based stats
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Setup a handler to run vfio-user context. The context is driven by
messages to the file descriptor associated with it - get the fd for
the context and hook up the handler with it
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: e934b0090529d448b6a7972b21dfc3d7421ce494.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Define vfio-user object which is remote process server for QEMU. Setup
object initialization functions and properties necessary to instantiate
the object
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: e45a17001e9b38f451543a664ababdf860e5f2f2.1655151679.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Of the block device commands, those that are available outside system
emulators do not require a fully constructed machine by definition.
Allow running them before machine initialization has concluded.
Of the ones that are available inside system emulation, allow querying
the PR managers, and setting up accounting and throttling.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Allow retrieving only a subset of statistics. This can be useful
for example in order to plot a subset of the statistics many times
a second: KVM publishes ~40 statistics for each vCPU on x86; retrieving
and serializing all of them would be useless.
Another use will be in HMP in the following patch; implementing the
filter in the backend is easy enough that it was deemed okay to make
this a public interface.
Example:
{ "execute": "query-stats",
"arguments": {
"target": "vcpu",
"vcpus": [ "/machine/unattached/device[2]",
"/machine/unattached/device[4]" ],
"providers": [
{ "provider": "kvm",
"names": [ "l1d_flush", "exits" ] } } }
{ "return": {
"vcpus": [
{ "path": "/machine/unattached/device[2]"
"providers": [
{ "provider": "kvm",
"stats": [ { "name": "l1d_flush", "value": 41213 },
{ "name": "exits", "value": 74291 } ] } ] },
{ "path": "/machine/unattached/device[4]"
"providers": [
{ "provider": "kvm",
"stats": [ { "name": "l1d_flush", "value": 16132 },
{ "name": "exits", "value": 57922 } ] } ] } ] } }
Extracted from a patch by Mark Kanda.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Allow retrieving the statistics from a specific provider only.
This can be used in the future by HMP commands such as "info
sync-profile" or "info profile". The next patch also adds
filter-by-provider capabilities to the HMP equivalent of
query-stats, "info stats".
Example:
{ "execute": "query-stats",
"arguments": {
"target": "vm",
"providers": [
{ "provider": "kvm" } ] } }
The QAPI is a bit more verbose than just a list of StatsProvider,
so that it can be subsequently extended with filtering of statistics
by name.
If a provider is specified more than once in the filter, each request
will be included separately in the output.
Extracted from a patch by Mark Kanda.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Introduce a simple filtering of statistics, that allows to retrieve
statistics for a subset of the guest vCPUs. This will be used for
example by the HMP monitor, in order to retrieve the statistics
for the currently selected CPU.
Example:
{ "execute": "query-stats",
"arguments": {
"target": "vcpu",
"vcpus": [ "/machine/unattached/device[2]",
"/machine/unattached/device[4]" ] } }
Extracted from a patch by Mark Kanda.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add support for querying fd-based KVM stats - as introduced by Linux kernel
commit:
cb082bfab59a ("KVM: stats: Add fd-based API to read binary stats data")
This allows the user to analyze the behavior of the VM without access
to debugfs.
Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Gathering statistics is important for development, for monitoring and
for performance measurement. There are tools such as kvm_stat that do
this and they rely on the _user_ knowing the interesting data points
rather than the tool (which can treat them as opaque).
The commands introduced in this commit introduce QMP support for
querying stats; the goal is to take the capabilities of these tools
and making them available throughout the whole virtualization stack,
so that one can observe, monitor and measure virtual machines without
having shell access + root on the host that runs them.
query-stats returns a list of all stats per target type (only VM
and vCPU to start); future commits add extra options for specifying
stat names, vCPU qom paths, and providers. All these are used by the
HMP command "info stats". Because of the development usecases around
statistics, a good HMP interface is important.
query-stats-schemas returns a list of stats included in each target
type, with an option for specifying the provider. The concepts in the
schema are based on the KVM binary stats' own introspection data, just
translated to QAPI.
There are two reasons to have a separate schema that is not tied to
the QAPI schema. The first is the contents of the schemas: the new
introspection data provides different information than the QAPI data,
namely unit of measurement, how the numbers are gathered and change
(peak/instant/cumulative/histogram), and histogram bucket sizes.
There's really no reason to have this kind of metadata in the QAPI
introspection schema (except possibly for the unit of measure, but
there's a very weak justification).
Another reason is the dynamicity of the schema. The QAPI introspection
data is very much static; and while QOM is somewhat more dynamic,
generally we consider that to be a bug rather than a feature these days.
On the other hand, the statistics that are exposed by QEMU might be
passed through from another source, such as KVM, and the disadvantages of
manually updating the QAPI schema for outweight the benefits from vetting
the statistics and filtering out anything that seems "too unstable".
Running old QEMU with new kernel is a supported usecase; if old QEMU
cannot expose statistics from a new kernel, or if a kernel developer
needs to change QEMU before gathering new info from the new kernel,
then that is a poor user interface.
The framework provides a method to register callbacks for these QMP
commands. Most of the work in fact is done by the callbacks, and a
large majority of this patch is new QAPI structs and commands.
Examples (with KVM stats):
- Query all VM stats:
{ "execute": "query-stats", "arguments" : { "target": "vm" } }
{ "return": [
{ "provider": "kvm",
"stats": [
{ "name": "max_mmu_page_hash_collisions", "value": 0 },
{ "name": "max_mmu_rmap_size", "value": 0 },
{ "name": "nx_lpage_splits", "value": 148 },
... ] },
{ "provider": "xyz",
"stats": [ ... ] }
] }
- Query all vCPU stats:
{ "execute": "query-stats", "arguments" : { "target": "vcpu" } }
{ "return": [
{ "provider": "kvm",
"qom_path": "/machine/unattached/device[0]"
"stats": [
{ "name": "guest_mode", "value": 0 },
{ "name": "directed_yield_successful", "value": 0 },
{ "name": "directed_yield_attempted", "value": 106 },
... ] },
{ "provider": "kvm",
"qom_path": "/machine/unattached/device[1]"
"stats": [
{ "name": "guest_mode", "value": 0 },
{ "name": "directed_yield_successful", "value": 0 },
{ "name": "directed_yield_attempted", "value": 106 },
... ] },
] }
- Retrieve the schemas:
{ "execute": "query-stats-schemas" }
{ "return": [
{ "provider": "kvm",
"target": "vcpu",
"stats": [
{ "name": "guest_mode",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "instant" },
{ "name": "directed_yield_successful",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "cumulative" },
... ]
},
{ "provider": "kvm",
"target": "vm",
"stats": [
{ "name": "max_mmu_page_hash_collisions",
"unit": "none",
"base": 10,
"exponent": 0,
"type": "peak" },
... ]
},
{ "provider": "xyz",
"target": "vm",
"stats": [ ... ]
}
] }
Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini requested this change to simplify the ongoing
effort to allow machine setup entirely via RPC.
Includes shortening the command line form cxl-fixed-memory-window
to cxl-fmw as the command lines are extremely long even with this
change.
The json change is needed to ensure that there is
a CXLFixedMemoryWindowOptionsList even though the actual
element in the json is never used. Similar to existing
SgxEpcProperties.
Update qemu-options.hx to reflect that this is now a -machine
parameter. The bulk of -M / -machine parameters are documented
under machine, so use that in preference to M.
Update cxl-test and bios-tables-test to reflect new parameters.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Message-Id: <20220608145440.26106-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Emulate a 3A5000 board use the new loongarch instruction.
3A5000 belongs to the Loongson3 series processors.
The board consists of a 3A5000 cpu model and the virt
bridge. The host 3A5000 board is really complicated and
contains many functions.Now for the tcg softmmu mode
only part functions are emulated.
More detailed info you can see
https://github.com/loongson/LoongArch-Documentation
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-31-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-22-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The "-display sdl" option still uses a hand-crafted parser for its
parameters since we didn't want to drag an interface we considered
somewhat flawed into the QAPI schema. Since the flaws are gone now,
it's time to QAPIfy.
This introduces the new "DisplaySDL" QAPI struct that is used to hold
the parameters that are unique to the SDL display. The only specific
parameter is currently "grab-mod" that is used to specify the required
modifier keys to escape from the mouse grabbing mode.
Message-Id: <20220519155625.1414365-3-thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Introduce akcipher types, also include RSA related types.
Signed-off-by: Lei He <helei.sig11@bytedance.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
most of CXL support
fixes, cleanups all over the place
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
virtio,pc,pci: fixes,cleanups,features
most of CXL support
fixes, cleanups all over the place
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Signature made Mon 16 May 2022 01:48:50 PM PDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (86 commits)
vhost-user-scsi: avoid unlink(NULL) with fd passing
virtio-net: don't handle mq request in userspace handler for vhost-vdpa
vhost-vdpa: change name and polarity for vhost_vdpa_one_time_request()
vhost-vdpa: backend feature should set only once
vhost-net: fix improper cleanup in vhost_net_start
vhost-vdpa: fix improper cleanup in net_init_vhost_vdpa
virtio-net: align ctrl_vq index for non-mq guest for vhost_vdpa
virtio-net: setup vhost_dev and notifiers for cvq only when feature is negotiated
hw/i386/amd_iommu: Fix IOMMU event log encoding errors
hw/i386: Make pic a property of common x86 base machine type
hw/i386: Make pit a property of common x86 base machine type
include/hw/pci/pcie_host: Correct PCIE_MMCFG_SIZE_MAX
include/hw/pci/pcie_host: Correct PCIE_MMCFG_BUS_MASK
docs/vhost-user: Clarifications for VHOST_USER_ADD/REM_MEM_REG
vhost-user: more master/slave things
virtio: add vhost support for virtio devices
virtio: drop name parameter for virtio_init()
virtio/vhost-user: dynamically assign VhostUserHostNotifiers
hw/virtio/vhost-user: don't suppress F_CONFIG when supported
include/hw: start documenting the vhost API
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(This replaces the 28th April through 10th May sets)
Compared to that last set it just has the Alpine
uring check that Leo has added; although that's also
now fixed upstream in Alpine.
It contains:
TLS test fixes from Dan
Zerocopy migration feature from Leo
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge tag 'pull-migration-20220516a' of https://gitlab.com/dagrh/qemu into staging
Migration pull 2022-05-16
(This replaces the 28th April through 10th May sets)
Compared to that last set it just has the Alpine
uring check that Leo has added; although that's also
now fixed upstream in Alpine.
It contains:
TLS test fixes from Dan
Zerocopy migration feature from Leo
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 16 May 2022 07:46:37 AM PDT
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
* tag 'pull-migration-20220516a' of https://gitlab.com/dagrh/qemu:
multifd: Implement zero copy write in multifd migration (multifd-zero-copy)
multifd: Send header packet without flags if zero-copy-send is enabled
multifd: multifd_send_sync_main now returns negative on error
migration: Add migrate_use_tls() helper
migration: Add zero-copy-send parameter for QMP/HMP for Linux
QIOChannelSocket: Implement io_writev zero copy flag & io_flush for CONFIG_LINUX
QIOChannel: Add flags on io_writev and introduce io_flush callback
meson.build: Fix docker-test-build@alpine when including linux/errqueue.h
tests: ensure migration status isn't reported as failed
tests: add multifd migration tests of TLS with x509 credentials
tests: add multifd migration tests of TLS with PSK credentials
tests: convert multifd migration tests to use common helper
tests: convert XBZRLE migration test to use common helper
tests: add migration tests of TLS with x509 credentials
tests: add migration tests of TLS with PSK credentials
tests: add more helper macros for creating TLS x509 certs
tests: fix encoding of IP addresses in x509 certs
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Add property that allows zero-copy migration of memory pages
on the sending side, and also includes a helper function
migrate_use_zero_copy_send() to check if it's enabled.
No code is introduced to actually do the migration, but it allow
future implementations to enable/disable this feature.
On non-Linux builds this parameter is compiled-out.
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220513062836.965425-5-leobras@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Commit 05ebf841ef "qapi: Enforce command naming rules" inserted new
code between a comment and the code it applies to. Move the comment
back to its code, and add one for the new code.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220510081433.3289762-1-armbru@redhat.com>
Perfectly aligned things look pretty, but keeping them that
way as the schema evolves requires churn, and in some cases
newly-added lines are not aligned properly.
Overall, trying to align things is just not worth the trouble.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20220503073737.84223-8-abologna@redhat.com>
Message-Id: <20220503073737.84223-9-abologna@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Two patches squashed together]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The only instances that get changed are those in which the
additional whitespace was not (or couldn't possibly be) used for
alignment purposes.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20220503073737.84223-7-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220503073737.84223-6-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220503073737.84223-5-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This only affects readability. The generated documentation
doesn't change.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220503073737.84223-4-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
It should start on the very first column.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220503073737.84223-3-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220503073737.84223-2-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@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.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220422132807.1704411-1-armbru@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The concept of these is introduced in [1] in terms of the
description the CEDT ACPI table. The principal is more general.
Unlike once traffic hits the CXL root bridges, the host system
memory address routing is implementation defined and effectively
static once observable by standard / generic system software.
Each CXL Fixed Memory Windows (CFMW) is a region of PA space
which has fixed system dependent routing configured so that
accesses can be routed to the CXL devices below a set of target
root bridges. The accesses may be interleaved across multiple
root bridges.
For QEMU we could have fully specified these regions in terms
of a base PA + size, but as the absolute address does not matter
it is simpler to let individual platforms place the memory regions.
ExampleS:
-cxl-fixed-memory-window targets.0=cxl.0,size=128G
-cxl-fixed-memory-window targets.0=cxl.1,size=128G
-cxl-fixed-memory-window targets.0=cxl0,targets.1=cxl.1,size=256G,interleave-granularity=2k
Specifies
* 2x 128G regions not interleaved across root bridges, one for each of
the root bridges with ids cxl.0 and cxl.1
* 256G region interleaved across root bridges with ids cxl.0 and cxl.1
with a 2k interleave granularity.
When system software enumerates the devices below a given root bridge
it can then decide which CFMW to use. If non interleave is desired
(or possible) it can use the appropriate CFMW for the root bridge in
question. If there are suitable devices to interleave across the
two root bridges then it may use the 3rd CFMS.
A number of other designs were considered but the following constraints
made it hard to adapt existing QEMU approaches to this particular problem.
1) The size must be known before a specific architecture / board brings
up it's PA memory map. We need to set up an appropriate region.
2) Using links to the host bridges provides a clean command line interface
but these links cannot be established until command line devices have
been added.
Hence the two step process used here of first establishing the size,
interleave-ways and granularity + caching the ids of the host bridges
and then, once available finding the actual host bridges so they can
be used later to support interleave decoding.
[1] CXL 2.0 ECN: CEDT CFMWS & QTG DSM (computeexpresslink.org / specifications)
Signed-off-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Markus Armbruster <armbru@redhat.com> # QAPI Schema
Message-Id: <20220429144110.25167-28-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
According to the NBD spec, a server that advertises
NBD_FLAG_CAN_MULTI_CONN promises that multiple client connections will
not see any cache inconsistencies: when properly separated by a single
flush, actions performed by one client will be visible to another
client, regardless of which client did the flush.
We always satisfy these conditions in qemu - even when we support
multiple clients, ALL clients go through a single point of reference
into the block layer, with no local caching. The effect of one client
is instantly visible to the next client. Even if our backend were a
network device, we argue that any multi-path caching effects that
would cause inconsistencies in back-to-back actions not seeing the
effect of previous actions would be a bug in that backend, and not the
fault of caching in qemu. As such, it is safe to unconditionally
advertise CAN_MULTI_CONN for any qemu NBD server situation that
supports parallel clients.
Note, however, that we don't want to advertise CAN_MULTI_CONN when we
know that a second client cannot connect (for historical reasons,
qemu-nbd defaults to a single connection while nbd-server-add and QMP
commands default to unlimited connections; but we already have
existing means to let either style of NBD server creation alter those
defaults). This is visible by no longer advertising MULTI_CONN for
'qemu-nbd -r' without -e, as in the iotest nbd-qemu-allocation.
The harder part of this patch is setting up an iotest to demonstrate
behavior of multiple NBD clients to a single server. It might be
possible with parallel qemu-io processes, but I found it easier to do
in python with the help of libnbd, and help from Nir and Vladimir in
writing the test.
Signed-off-by: Eric Blake <eblake@redhat.com>
Suggested-by: Nir Soffer <nsoffer@redhat.com>
Suggested-by: Vladimir Sementsov-Ogievskiy <v.sementsov-og@mail.ru>
Message-Id: <20220512004924.417153-3-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Make -m syntactic sugar for a compound property "-machine
mem.{size,max-size,slots}". The new property does not have
the magic conversion to megabytes of unsuffixed arguments,
and also does not understand that "0" means the default size
(you have to leave it out to get the default). This means
that we need to convert the QemuOpts by hand to a QDict.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414165300.555321-4-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
As part of converting -boot to a property with a QAPI type, define
the struct and use it throughout QEMU to access boot configuration.
machine_boot_parse takes care of doing the QemuOpts->QAPI conversion by
hand, for now.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220414165300.555321-2-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Add new thread-pool-min/thread-pool-max parameters to control the thread pool
used for async I/O.
- Fix virtio-scsi IOThread 100% CPU consumption QEMU 7.0 regression.
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Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging
Pull request
- Add new thread-pool-min/thread-pool-max parameters to control the thread pool
used for async I/O.
- Fix virtio-scsi IOThread 100% CPU consumption QEMU 7.0 regression.
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# gpg: Signature made Mon 09 May 2022 05:52:56 AM PDT
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
virtio-scsi: move request-related items from .h to .c
virtio-scsi: clean up virtio_scsi_handle_cmd_vq()
virtio-scsi: clean up virtio_scsi_handle_ctrl_vq()
virtio-scsi: clean up virtio_scsi_handle_event_vq()
virtio-scsi: don't waste CPU polling the event virtqueue
virtio-scsi: fix ctrl and event handler functions in dataplane mode
util/event-loop-base: Introduce options to set the thread pool size
util/main-loop: Introduce the main loop into QOM
Introduce event-loop-base abstract class
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This adds cluster-id in CPU instance properties, which will be used
by arm/virt machine. Besides, the cluster-id is also verified or
dumped in various spots:
* hw/core/machine.c::machine_set_cpu_numa_node() to associate
CPU with its NUMA node.
* hw/core/machine.c::machine_numa_finish_cpu_init() to record
CPU slots with no NUMA mapping set.
* hw/core/machine-hmp-cmds.c::hmp_hotpluggable_cpus() to dump
cluster-id.
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20220503140304.855514-2-gshan@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The thread pool regulates itself: when idle, it kills threads until
empty, when in demand, it creates new threads until full. This behaviour
doesn't play well with latency sensitive workloads where the price of
creating a new thread is too high. For example, when paired with qemu's
'-mlock', or using safety features like SafeStack, creating a new thread
has been measured take multiple milliseconds.
In order to mitigate this let's introduce a new 'EventLoopBase'
property to set the thread pool size. The threads will be created during
the pool's initialization or upon updating the property's value, remain
available during its lifetime regardless of demand, and destroyed upon
freeing it. A properly characterized workload will then be able to
configure the pool to avoid any latency spikes.
Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20220425075723.20019-4-nsaenzju@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
'event-loop-base' provides basic property handling for all 'AioContext'
based event loops. So let's define a new 'MainLoopClass' that inherits
from it. This will permit tweaking the main loop's properties through
qapi as well as through the command line using the '-object' keyword[1].
Only one instance of 'MainLoopClass' might be created at any time.
'EventLoopBaseClass' learns a new callback, 'can_be_deleted()' so as to
mark 'MainLoop' as non-deletable.
[1] For example:
-object main-loop,id=main-loop,aio-max-batch=<value>
Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20220425075723.20019-3-nsaenzju@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Introduce the 'event-loop-base' abstract class, it'll hold the
properties common to all event loops and provide the necessary hooks for
their creation and maintenance. Then have iothread inherit from it.
EventLoopBaseClass is defined as user creatable and provides a hook for
its children to attach themselves to the user creatable class 'complete'
function. It also provides an update_params() callback to propagate
property changes onto its children.
The new 'event-loop-base' class will live in the root directory. It is
built on its own using the 'link_whole' option (there are no direct
function dependencies between the class and its children, it all happens
trough 'constructor' magic). And also imposes new compilation
dependencies:
qom <- event-loop-base <- blockdev (iothread.c)
And in subsequent patches:
qom <- event-loop-base <- qemuutil (util/main-loop.c)
All this forced some amount of reordering in meson.build:
- Moved qom build definition before qemuutil. Doing it the other way
around (i.e. moving qemuutil after qom) isn't possible as a lot of
core libraries that live in between the two depend on it.
- Process the 'hw' subdir earlier, as it introduces files into the
'qom' source set.
No functional changes intended.
Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20220425075723.20019-2-nsaenzju@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Add possibility to change addresses where VNC server listens for new
connections. Prior to 6.0 this functionality was available through
'change' qmp command which was deleted.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220401143936.356460-3-vsementsov@openvz.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Currently screendump only supports PPM format, which is un-compressed. Added
a "format" parameter to QMP and HMP screendump command to support PNG image
capture using libpng.
QMP example usage:
{ "execute": "screendump", "arguments": { "filename": "/tmp/image",
"format":"png" } }
HMP example usage:
screendump /tmp/image -f png
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/718
Signed-off-by: Kshitij Suri <kshitij.suri@nutanix.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20220408071336.99839-3-kshitij.suri@nutanix.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Hi all! Current logic of relying on search through backing chain is not
safe neither convenient.
Sometimes it leads to necessity of extra bitmap copying. Also, we are
going to add "snapshot-access" driver, to access some snapshot state
through NBD. And this driver is not formally a filter, and of course
it's not a COW format driver. So, searching through backing chain will
not work. Instead of widening the workaround of bitmap searching, let's
extend the interface so that user can select bitmap precisely.
Note, that checking for bitmap active status is not copied to the new
API, I don't see a reason for it, user should understand the risks. And
anyway, bitmap from other node is unrelated to this export being
read-only or read-write.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Message-Id: <20220314213226.362217-3-v.sementsov-og@mail.ru>
[eblake: Adjust S-o-b to Vladimir's new email, with permission]
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Rename the type to be reused. Old name is "what is it for". To be
natively reused for other needs, let's name it exactly "what is it".
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Message-Id: <20220314213226.362217-2-v.sementsov-og@mail.ru>
[eblake: Adjust S-o-b to Vladimir's new email, with permission]
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
'blockdev-change-medium' is a convinient wrapper for the following
sequence of commands:
* blockdev-open-tray
* blockdev-remove-medium
* blockdev-insert-medium
* blockdev-close-tray
and should be used f.e. to change ISO image inside the CD-ROM tray.
Though the guest could lock the tray and some linux guests like
CentOS 8.5 actually does that. In this case the execution if this
command results in the error like the following:
Device 'scsi0-0-1-0' is locked and force was not specified,
wait for tray to open and try again.
This situation is could be resolved 'blockdev-open-tray' by passing
flag 'force' inside. Thus is seems reasonable to add the same
capability for 'blockdev-change-medium' too.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org>
Acked-by: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Hanna Reitz <hreitz@redhat.com>
CC: Eric Blake <eblake@redhat.com>
CC: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220412221846.280723-1-den@openvz.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Do not require the whole option machinery to handle keyval, as it is
used by QAPI alone, without the option API. And match the associated
unit name.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220420132624.2439741-24-marcandre.lureau@redhat.com>
Commit 811b4ec7f8 ("qapi, target/i386/sev: Add cpu0-id to
query-sev-capabilities") wrongly stated that the new field is available
since version 7.0.
Fix the QAPI documentation to state that the cpu0-id field is included
since 7.1.
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Message-Id: <20220420190129.3532623-1-dovmurik@linux.ibm.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20220420153408.243584-4-abologna@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The correct return type is ReplicationStatus, not
ReplicationResult.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20220420153408.243584-3-abologna@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
GLib g_get_real_time() is an alternative to gettimeofday() which allows
to simplify our code.
For semihosting, a few bits are lost on POSIX host, but this shouldn't
be a big concern.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220307070401.171986-5-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a new field 'cpu0-id' to the response of query-sev-capabilities QMP
command. The value of the field is the base64-encoded unique ID of CPU0
(socket 0), which can be used to retrieve the signed CEK of the CPU from
AMD's Key Distribution Service (KDS).
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220228093014.882288-1-dovmurik@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The example shows {"command": ...}, which is wrong. Fix it to
{"execute": ...}.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220401082028.3583296-1-armbru@redhat.com>
Reviewed-by: Victor Toso <victortoso@redhat.com>
Example output is missing mandatory argument @share for the return
JSON object. Add it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-10-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output contains member @arch that was removed in 445a5b4087
"machine: remove 'arch' field from 'query-cpus-fast' QMP command". Fix
it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-9-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The example output is missing the mandatory member @vcpu. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-8-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The example output is missing the mandatory member @last-mode in the
return value. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-7-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The return value is missing the mandatory member @websocket. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-6-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output is missing mandatory members @migrated and @mouse-mode.
Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-5-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output is missing mandatory member @detect_zeroes. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-4-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Both examples outputs are using @data member for the arguments. This
is wrong. The expected member for the QMP is @arguments. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220331190633.121077-3-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output has the optional member @dnssearch as string type. It
should be an array of String objects instead. Fix it.
For reference, see NetdevUserOptions.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220401110712.26911-1-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message tweaked for precision]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @paging. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-15-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @timestamp. Provide it.
Event's @data member is missing @info object. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-14-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The examples were missing mandatory member @websocket. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-13-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @timestamp. Provide it.
Example output lacks mandatory member flags.recursive. Provide it.
Minor: Change quotes from '' to "" in @action-required member.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-12-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Commit message fixed up]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The changed examples were lacking mandatory member @timestamp.
Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-11-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @reason. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-10-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @timestamp. Provide it.
Event's documentation is not properly formatted. Fix it by:
- Adding @ to "device-id"
- Adding extra line for "Since" section
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-9-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @timestamp. Provide it.
Example output is not properly formatted. Fixing it by:
- Adding '<-' to signalize it is receiving the data;
- Breaking lines similar to the other examples.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-8-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @qom-path. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220328140604.41484-7-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @timestamp. Provide it.
Example output is not properly formatted. Fixing it by:
- Adding '<-' to signalize it is receiving the data;
- Adding extra spaces around members @result, @total and @completed
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-6-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output has the wrong event's name in it. Fix it.
Example output shows incorrect member @device. Fix it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220328140604.41484-5-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @reason. Provide it.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220328140604.41484-4-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Example output lacks mandatory member @fatal. Provide it.
Example output shows a value of @msg no version of the code
produces. No big deal, but replace it anyway by one that
today's code does produce.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220328140604.41484-3-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
@hide and @soft are potential additions which fits the TODO section
perfectly.
The main motivation is to avoid this whole block of comment entering
the wrong section in the python parser.
Signed-off-by: Victor Toso <victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-Id: <20220328140604.41484-2-victortoso@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This is the last qapi schema that is missing the modeline.
Fixes 7e7237cd2b "schemas: add missing vim modeline"
Signed-off-by: Victor Toso <victortoso@redhat.com>
Message-Id: <20220325221605.53995-1-victortoso@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
On Mac OS X the Option key maps to Alt and Command to Super/Meta. This change
swaps them around so that Alt is the key closer to the space bar and Meta/Super
is between Control and Alt, like on non-Mac keyboards.
It is a cocoa display option, disabled by default.
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gustavo Noronha Silva <gustavo@noronha.dev.br>
Message-Id: <20210713213200.2547-3-gustavo@noronha.dev.br>
Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220306121119.45631-3-akihiko.odaki@gmail.com>
Reviewed-by: Will Cohen <wwcohen@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Applications such as Gnome may use Alt-Tab and Super-Tab for different
purposes, some use Ctrl-arrows so we want to allow qemu to handle
everything when it captures the mouse/keyboard.
However, Mac OS handles some combos like Command-Tab and Ctrl-arrows
at an earlier part of the event handling chain, not letting qemu see it.
We add a global Event Tap that allows qemu to see all events when the
mouse is grabbed. Note that this requires additional permissions.
See:
https://developer.apple.com/documentation/coregraphics/1454426-cgeventtapcreate?language=objc#discussionhttps://support.apple.com/en-in/guide/mac-help/mh32356/mac
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gustavo Noronha Silva <gustavo@noronha.dev.br>
Message-Id: <20210713213200.2547-2-gustavo@noronha.dev.br>
Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20220306121119.45631-2-akihiko.odaki@gmail.com>
Reviewed-by: Will Cohen <wwcohen@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
When switching between guest and host on a Mac using command-tab the
command key is sent to the guest which can trigger functionality in the
guest OS. Specifying left-command-key=off disables forwarding this key
to the guest. Defaults to enabled.
Also updated the cocoa display documentation to reference the new
left-command-key option along with the existing show-cursor option.
Signed-off-by: Carwyn Ellis <carwynellis@gmail.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com>
[PMD: Set QAPI structure @since tag to 7.0]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
When connecting to an NBD server with TLS and x509 credentials,
the client must validate the hostname it uses for the connection,
against that published in the server's certificate. If the client
is tunnelling its connection over some other channel, however, the
hostname it uses may not match the info reported in the server's
certificate. In such a case, the user needs to explicitly set an
override for the hostname to use for certificate validation.
This is achieved by adding a 'tls-hostname' property to the NBD
block driver.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220304193610.3293146-4-berrange@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The new block driver simply utilizes snapshot-access API of underlying
block node.
In further patches we want to use it like this:
[guest] [NBD export]
| |
| root | root
v file v
[copy-before-write]<------[snapshot-access]
| |
| file | target
v v
[active-disk] [temp.img]
This way, NBD client will be able to read snapshotted state of active
disk, when active disk is continued to be written by guest. This is
known as "fleecing", and currently uses another scheme based on qcow2
temporary image which backing file is active-disk. New scheme comes
with benefits - see next commit.
The other possible application is exporting internal snapshots of
qcow2, like this:
[guest] [NBD export]
| |
| root | root
v file v
[qcow2]<---------[snapshot-access]
For this, we'll need to implement snapshot-access API handlers in
qcow2 driver, and improve snapshot-access block driver (and API) to
make it possible to select snapshot by name. Another thing to improve
is size of snapshot. Now for simplicity we just use size of bs->file,
which is OK for backup, but for qcow2 snapshots export we'll need to
imporve snapshot-access API to get size of snapshot.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20220303194349.2304213-12-vsementsov@virtuozzo.com>
[hreitz: Rebased on block GS/IO split]
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
This brings "incremental" mode to copy-before-write filter: user can
specify bitmap so that filter will copy only "dirty" areas.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20220303194349.2304213-5-vsementsov@virtuozzo.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
It is possible to specify more than one VNC server on the command line,
either with an explicit ID or the auto-generated ones à la "default",
"vnc2", "vnc3", ...
It is not possible to change the password on one of these extra VNC
displays though. Fix this by adding a "display" parameter to the
"set_password" and "expire_password" QMP and HMP commands.
For HMP, the display is specified using the "-d" value flag.
For QMP, the schema is updated to explicitly express the supported
variants of the commands with protocol-discriminated unions.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
[FE: update "Since: " from 6.2 to 7.0
make @connected a common member of @SetPasswordOptions]
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Message-Id: <20220225084949.35746-4-f.ebner@proxmox.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
'protocol' and 'connected' are better suited as enums than as strings,
make use of that. No functional change intended.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
[FE: update "Since: " from 6.2 to 7.0
put 'keep' first in enum to ease use as a default]
Signed-off-by: Fabian Ebner <f.ebner@proxmox.com>
Message-Id: <20220225084949.35746-3-f.ebner@proxmox.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Commit 57df0dff1a "qapi: Extend -compat to set policy for unstable
interfaces" (v6.2.0) took care of covering experimental features, but
neglected to adjust a comment suggesting to cover it. Adjust it now.
Fixes: 57df0dff1a
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20220225084538.218876-1-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Event RTC_CHANGE is "emitted when the guest changes the RTC time" (and
the RTC supports the event). What if there's more than one RTC?
Which one changed? New @qom-path identifies it.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <87a6ejnm80.fsf@pond.sub.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
The RTC_CHANGE event's documentation is missing some details:
* the offset argument is in units of seconds
* it isn't guaranteed that the RTC will implement the event
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20220221192123.749970-3-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit effectively reverts commit 183e4281a3, which moved
the RTC_CHANGE event to the target schema. That change was an
attempt to make the event target-specific to improve introspection,
but the event isn't really target-specific: it's machine or device
specific. Putting RTC_CHANGE in the target schema with an ifdef list
reduces maintainability (by adding an if: list with a long list of
targets that needs to be manually updated as architectures are added
or removed or as new devices gain the RTC_CHANGE functionality) and
increases compile time (by preventing RTC devices which emit the
event from being "compile once" rather than "compile once per
target", because qapi-events-misc-target.h uses TARGET_* ifdefs,
which are poisoned in "compile once" files.)
Move RTC_CHANGE back to misc.json.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Greg Kurz <groug@kaod.org>
Message-Id: <20220221192123.749970-2-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
