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Commit Graph

213 Commits

Author SHA1 Message Date
Peter Krempa
525287e1bd docs: formatdomain: Remove 'elementsVideo' anchor
The surrounding paragraph around the only fixed use was rewrapped.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
58a7955c9c docs: formatdomain: Remove 'elementsGraphics' anchor
Local references needed rewording.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
0859e2135d docs: formatdomain: Remove 'elementVhostuser' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
696183be0e docs: formatdomain: Remove 'coalesce' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
00901cb4e4 docs: formatdomain: Remove 'mtu' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
fd36dc7397 docs: formatdomain: Remove 'elementPort' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
5d2c344407 docs: formatdomain: Remove 'elementVlanTag' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
8077974d64 docs: formatdomain: Remove 'elementQoS' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
99e01a44e4 docs: formatdomain: Remove 'elementsNICSTargetOverride' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
4506e4057d docs: formatdomain: Remove 'elementsNICSDirect' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
dadd384907 docs: formatdomain: Remove 'elementsNICS' anchor
The one local link addition prompted rewrapping of the whole paragraph.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
abc1b8ab60 docs: formatdomain: Remove 'elementsHostDev' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
5dc55c52ac docs: formatdomain: Remove 'elementsControllers' anchor
Local references were reworded.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
92e09c3659 docs: formatdomain: Remove 'elementsVirtioTransitional' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
fbce49ed9a docs: formatdomain: Remove 'elementsVirtio' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
02954a5f5d docs: formatdomain: Remove 'elementsAddress' anchor
All local links were reformulated to make sense with local references.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
4331a892d4 docs: formatdomain: Remove 'elementsDisks' anchor
Two paragraphs containing local links were reformulated and rewrapped.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
dff53731ec docs: formatdomain: Remove 'elementsDevices' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
4fbaa15362 docs: formatdomain: Remove 'elementsFeatures' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
2f36b98a42 docs: formatdomain: Remove 'elementsEvents' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
cc947d59eb docs: formatdomain: Remove 'hmat' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
456a710290 docs: formatdomain: Remove 'elementsCPU' anchor
Reworded documentation around the local link.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
de430ac139 docs: formatdomain: Remove 'elementsBlockTuning' anchor
Reworded documentation around the local link.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
763c35e7e6 docs: formatdomain: Remove 'elementsNUMATuning' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
88b97d9bce docs: formatdomain: Remove 'elementsMemoryTuning' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
e1f9c35220 docs: formatdomain: Remove 'elementsMemoryBacking' anchor
Reworded documentation around one of the local links.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
14f11cf375 docs: formatdomain: Remove 'elementsMemoryAllocation' anchor
Reworded documentation around local links.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
19bdd5d3d5 docs: formatdomain: Remove 'elementsCPUTuning' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
f97e788994 docs: formatdomain: Remove 'elementsIOThreadsAllocation' anchor
Reworded documentation around local links.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
6fee44f3f5 docs: formatdomain: Remove 'elementsCPUAllocation' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
9e7ac886bb docs: formatdomain: Remove 'elementsSysinfo' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
8593e550df docs: formatdomain: Remove 'elementsOSContainer' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
09ed0fd5b9 docs: formatdomain: Remove 'elementsOSBIOS' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
b680bb3bb6 docs: formatdomain: Remove 'elementsOS' anchor
Reworded the paragraph around the local link.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
d67964a47a docs: formatdomain: Remove 'elementsMetadata' anchor
Reworded the local link so that it retains the sense.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Peter Krempa
986d596fcc docs: formatdomain: Remove 'elements' anchor
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-06-01 12:27:09 +02:00
Marc-André Lureau
89d789670d docs: document <graphics> type dbus
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-05-19 12:36:42 +02:00
Han Han
facaa9ae98 docs: formatdomain: Add the introduced versions of net rss attrs
Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2022-05-19 10:10:29 +02:00
Peter Krempa
d53e75aad0 conf: Introduce 'absolute' clock offset
The 'absolute' clock offset type has a 'start' attribute which is an
unix epoch timestamp to which the hardware clock is always set at start
of the VM.

This is useful if some VM needs to be kept set to an arbitrary time for
e.g. testing or working around broken software.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-05-17 19:30:59 +02:00
Han Han
43c83a2112 docs: formatdomain: Fix the introduced version of vdagent
The qemu-vdagent channel is introduced since:
"05b09f039e    conf: add qemu-vdagent channel"

It will be in the version 8.4.0.

Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2022-05-13 14:38:11 +02:00
Jonathon Jongsma
05b09f039e conf: add qemu-vdagent channel
Add the ability to configure a qemu-vdagent in guest domains. This
device is similar to the spice vdagent channel except that qemu handles
the spice-vdagent protocol messages itself rather than routing them over
a spice protocol channel.

The qemu-vdagent device has two notable configuration options which
determine whether qemu will handle particular vdagent features:
'clipboard' and 'mouse'.

The 'clipboard' option allows qemu to synchronize its internal clipboard
manager with the guest clipboard, which enables client<->guest clipboard
synchronization for non-spice guests such as vnc.

The 'mouse' option allows absolute mouse positioning to be sent over the
vdagent channel rather than using a usb or virtio tablet device.

Sample configuration:
  <channel type='qemu-vdagent'>
    <target type='virtio' name='com.redhat.spice.0'/>
    <source>
      <clipboard copypaste='yes'/>
      <mouse mode='client'/>
    </source>
  </channel>

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2022-05-10 11:00:15 -05:00
Peter Krempa
3fdedbe6c6 docs: formatdomain: Remove old unreferenced HTML anchors
Most of the anchors that were forward ported to formatdomain.rst when it
was converted are not actually referenced by our documentation. Since
it's now quite some time after the conversion was done we can remove
them.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-04-25 16:33:01 +02:00
Peter Krempa
2a8946ca7e docs: Convert 'formatnetwork' page to rst
Additionally hyperlinks in other parts of the documentation are updated
to match.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-04-19 16:19:48 +02:00
Pavel Hrdina
f01f957792 docs: Convert 'formatnwfilter' page to rst
Also adjust direct links from other pages.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-04-19 16:19:48 +02:00
Peter Krempa
9c54820eb5 docs: Convert 'formatdomaincaps' to rST
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2022-04-07 17:15:52 +02:00
Andrew Melnychenko
a8b1cbe77e domain_conf: Add configs for virtio net RSS and Hash report.
Added "rss" and "rss_hash_report" configuration that should be
used with qemu virtio RSS. Both options are triswitches. Used as
"driver" options and affects only NIC with model type "virtio".
In other patches - options should turn on virtio-net RSS and hash
properties.

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-04-05 15:36:27 +02:00
Andrea Bolognani
c377822460 docs: Document virtio-iommu
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-04-04 10:36:30 +02:00
Peter Krempa
5da6e17313 docs: Convert 'drvxen' page to rST
Fix the referenced anchor in 'formatdomain.rst' right away.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2022-04-01 16:33:19 +02:00
Peter Krempa
19b1fef54a docs: Convert 'drvnodedev' page to rST
Fix one cross link anchor along with the conversion.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2022-04-01 16:33:19 +02:00
John Levon
7767454267 fix documentation for sockets topology
In 0895a0e, it was noted that the "sockets" value in the topology
section of capabilities reflects not the number of sockets per NUMA
node, not the total number.

Unfortunately, the fix was applied to the wrong place: the domain XML
format documentation, not that for the capabilities output. And, in
fact, the domain XML interprets "sockets" as the total number, not a
per-node value.

Back out this change in favour of a note in the capabilities
documentation instead.

Fixes: 0895a0e75d
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: John Levon <john.levon@nutanix.com>
2022-03-30 15:51:57 +01:00
Michal Privoznik
bcb3bf2f7c Revert "domain: add tsc.on_reboot element"
This reverts commit 150540394d.

Turns out, this feature is not needed and QEMU will fix TSC
without any intervention from outside.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>P
2022-03-28 10:00:18 +02:00
Paolo Bonzini
150540394d domain: add tsc.on_reboot element
Some versions of Windows hang on reboot if their TSC value is greater
than 2^54.  The workaround is to reset the TSC to a small value.  Add
to the domain configuration an attribute for this.  It can be used
by QEMU and in principle also by ESXi, which has a property called
monitor_control.enable_softResetClearTSC as well.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-03-25 16:30:48 +01:00
Michal Privoznik
ba7f98126f conf: Introduce memory allocation threads
Since its v5.0.0 release QEMU is capable of specifying number of
threads used to allocate memory. It defaults to 1, which may be
too low for humongous guests with gigantic pages.

In general, on QEMU cmd line level it is possible to use
different number of threads per each memory-backend-* object, in
practical terms it's not useful. Therefore, use <memoryBacking/>
to set guest wide value and let all memory devices 'inherit' it,
silently. IOW, don't introduce per device knob because that would
only complicate things for a little or no benefit.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2022-03-24 15:45:41 +01:00
Peter Krempa
a1465e661e conf: snapshot: Introduce 'manual' mode for snapshot of a disk
The idea of the manual mode is to allow a synchronized snapshot in cases
when the storage is outsourced to an unmanaged storage provider which
requires cooperation with snapshotting.

The mode will instruct the hypervisor to pause along when the other
components are snapshotted and the 'manual' disk can be snapshotted
along. This increases latency of the snapshot but allows them in
otherwise impossible situations.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-03-22 10:32:43 +01:00
Peter Krempa
e6d1ed4a76 conf: Add support for setting expected TLS hostname for NBD disks
In cases when the hostname of the NBD server doesn't match the hostname
in the TLS certificate the new attribute 'tlsHostname' can be used to
override it.

Add the XML infrastructure and tests.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2022-03-11 15:17:06 +01:00
Jing Qi
89b8b3662e docs: Fix HMAT example
There are dupliacated and non-continuous CPU IDs used in HMAT
example. Fix that.

Signed-off-by: Jing Qi <jinqi@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2022-02-10 12:43:36 +01:00
Andrea Bolognani
654968381d docs: Add example for isa-debugcon
Most people will want to use isa-debugcon to obtain debug output
for SeaBIOS / EDK II, so let's include a ready-made example for
that scenario in our documentation.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2022-02-03 15:40:37 +01:00
Daniel P. Berrangé
aab943a632 conf: support firmware ISA debug console
Introduce support for

  <serial type='pty'>
    <target type='isa-debug'>
      <model type='isa-debugcon'/>
    </target>
    <address type='isa' iobase='0x402'/>
  </console>

which is used as a way to receive debug messages from the
firmware on x86 platforms.

Note that the default port is hypervisor specific, with QEMU
currently using 0xe9 since that's the original Bochs debug port.
For use with SeaBIOS/OVMF, the iobase port needs to be explicitly
set to 0x402.

Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2022-02-03 10:59:03 +00:00
Roman Bolshakov
9a5306ba2f docs: Note hvf support for domain elements
Many domain elements have "QEMU and KVM only" or "QEMU/KVM since x.y.z"
remarks. Most of the elements work for HVF domain, so it makes sense to
add respective notices for HVF domain.

All the elements have been manually tested.

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Brad Laue <brad@brad-x.com>
Tested-by: Christophe Fergeau <cfergeau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2022-01-25 16:54:44 +01:00
Roman Bolshakov
bb9373d096 conf: Add hvf domain type
QEMU supports Hypervisor.framework since 2.12 as hvf accel.
Hypervisor.framework provides a lightweight interface to run a virtual
cpu on macOS without the need to install third-party kernel
extensions (KEXTs).

It's supported since macOS 10.10 on machines with Intel VT-x feature
set that includes Extended Page Tables (EPT) and Unrestricted Mode.

Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Brad Laue <brad@brad-x.com>
Tested-by: Christophe Fergeau <cfergeau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2022-01-25 16:53:39 +01:00
Olaf Hering
31d461f575 docs: domain: document legacy audio for qemu
Adding a blurb like this was forgotten in 2009.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
2022-01-17 18:20:56 +01:00
Daniel P. Berrangé
08e3d9ed24 docs: split example for <os> schema
The docs illustration for the <os> schema contains a mixture of
incompatible configuration options. This is rather confusing and
misleading to users. Splitting the illustration into four separate
examples clarifies the situation.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2022-01-14 18:56:23 +00:00
Stefan Berger
7c17572798 docs: tpm: Clarify omission or removal of active_pcr_banks node
Add a sentence to the active_pcr_banks node documentation that clarifies
that when the active_pcr_banks node is removed from the XML or when it
is omitted that the set of active PCR banks is not changed anymore.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2039246
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
2022-01-13 10:44:15 +01:00
Boris Fiuczynski
654c72ee94 docs: minor fix in launchSecurity
Correcting XML element.

Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2022-01-13 10:22:24 +01:00
Michal Privoznik
a19b93d4e0 qemu: Allow VIR_DOMAIN_NUMATUNE_MEM_RESTRICTIVE in qemuDomainSetNumaParamsLive()
The whole idea of VIR_DOMAIN_NUMATUNE_MEM_RESTRICTIVE is that the
memory location is restricted only via CGroups and thus can be
changed on the fly (which is exactly what
qemuDomainSetNumaParamsLive() does. Allow this mode there then.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-12-17 13:18:54 +01:00
Daniel P. Berrangé
cd4e917760 conf: add support for setting SEV kernel hashes
Normally the SEV measurement only covers the firmware
loader contents. When doing a direct kernel boot, however,
with new enough OVMF it is possible to ask for the
measurement to cover the kernel, ramdisk and command line.

It can't be done automatically as that would break existing
guests using direct kernel boot with old firmware, so there
is a new XML setting allowing this behaviour to be toggled.

Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-12-16 18:02:58 +00:00
Tim Wiederhake
0519787f88 docs: domain: Clarify on the dangers of migrating with hyperv-passthrough enabled
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-12-15 11:53:08 +01:00
Tim Wiederhake
8b6766bd77 docs: domain: Add documentation for hyperv passthrough mode
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-12-14 16:50:46 +01:00
Tim Wiederhake
da9f798445 docs: domain: Add documentation for "hyperv"'s new "mode" attribute
Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-12-14 16:50:45 +01:00
Hyman Huang(黄勇)
5d18d740d8 qemu: support dirty ring feature
Dirty ring feature was introduced in qemu-6.1.0, this patch
add the corresponding feature named 'dirty-ring', which enable
dirty ring feature when starting VM.

To enable the feature, the following XML needs to be added to
the guest's domain description:

<features>
   <kvm>
     <dirty-ring state='on' size='xxx'>
   </kvm>
</features>

If property "state=on", property "size" must be specified, which
should be power of 2 and range in [1024, 65526].

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-12-14 13:17:41 +01:00
Michal Privoznik
16159d5152 qemu: Validate TCG feature is enabled only for TCG domains
After previous commit it's possible for domains to fine tune TCG
features (well, just one - tb-cache). Check that domain has TCG
enabled, otherwise the feature makes no sense.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-12-13 17:07:39 +01:00
Michal Privoznik
f106788069 conf: Introduce TCG domain features
It may come handy to be able to tweak TCG options, in this
specific case the size of translation block cache size (tb-size).
Since we can expect more knobs to tweak let's put them under
common element, like this:

  <domain>
    <features>
      <tcg>
        <tb-cache unit='MiB'>128</tb-cache>
      </tcg>
    </features>
  </domain>

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-12-13 17:01:02 +01:00
Stefan Berger
a5bbe1a8b6 qemu: tpm: Extend TPM domain XML with PCR banks to activate
Extend the TPM backend XML with a node 'active_pcr_banks' that allows a
user to specify the PCR banks to activate before starting a VM. Valid
choices for PCR banks are sha1, sha256, sha384 and sha512. When the XML
node is provided, the set of active PCR banks is 'enforced' by running
swtpm_setup before every start of the VM. The activation requires that
swtpm_setup v0.7 or later is installed and may not have any effect
otherwise.

<tpm model='tpm-tis'>
  <backend type='emulator' version='2.0'>
    <active_pcr_banks>
      <sha256/>
      <sha384/>
    </active_pcr_banks>
  </backend>
</tpm>

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2016599

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-11-05 09:22:50 +01:00
zhenwei pi
b2757b697e qemu: support kvm-pv-ipi off
QEMU version 3.1 introduced PV_SEND_IPI CPUID feature bit under
commit 7f710c32bb8 (target-i386: adds PV_SEND_IPI CPUID feature bit).

This patch adds a new KVM feature 'pv-ipi' to disable this feature
(enabled by default). Newer CPU platform (Ex, AMD Zen2) supports
hardware accelation for IPI in guest, to use this feature to get
better performance in some scenarios. Detailed about the discussion:
  https://lkml.org/lkml/2021/10/20/423

To disable kvm-pv-ipi and have libvirt add "-cpu host,kvm-pv-ipi=off"
to the QEMU command line, the following XML code needs to be added to the
guest's domain description:

  <features>
    <kvm>
      <pv-ipi state='off'/>
    </kvm>
  </features>

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-11-01 15:44:26 +01:00
Han Han
c0946737d5 docs: Fix a typo of page_per_vq
The page_per_vq is added since v7.9.0 not v7.8.0.

Signed-off-by: Han Han <hhan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-10-29 14:51:05 +02:00
Laine Stump
dba9893831 Revert "conf: introduce support for acpi-bridge-hotplug feature"
This reverts commit 7300ccc9b3.

Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ani Sinha <ani@anisinha.ca>
2021-10-25 23:18:41 -04:00
Han Han
388cdd11f3 conf: Add page_per_vq for driver element
Signed-off-by: Han Han <hhan@redhat.com>
Signed-off-by: Gavi Teitz <gavi@nvidia.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-10-15 09:40:55 +02:00
Ani Sinha
7300ccc9b3 conf: introduce support for acpi-bridge-hotplug feature
This change introduces a new libvirt sub-element <pci> under
<features> that can be used to configure all pci related features.
Currently the only sub-sub element supported by this sub-element is
'acpi-bridge-hotplug' as shown below:

<features>
  <pci>
    <acpi-bridge-hotplug state='on|off'/>
  </pci>
</features>

The above option is only available for the QEMU driver, for x86 guests
only. It is a global option, affecting all PCI bridge controllers on
the guest.

The 'acpi-bridge-hotplug' option enables or disables ACPI hotplug
support for cold-plugged pci bridges. Examples of bridges include the
PCI-PCI bridge (pci-bridge controller) for pc (i440fx) machinetypes,
or PCIe-PCI bridges and pcie-root-port controllers for q35
machinetypes.

For pc machinetypes in x86, this option has been available in QEMU
since version 2.1. Please see the following changes in qemu repo:

9e047b982452c6 ("piix4: add acpi pci hotplug support")
133a2da488062e ("pc: acpi: generate AML only for PCI0 devices if PCI
               bridge hotplug is disabled")

For q35 machinetypes, this was introduced in QEMU 6.1 with the
following changes in qemu repo:

(a) c0e427d6eb5fef ("hw/acpi/ich9: Enable ACPI PCI hot-plug")
(b) 17858a16950860 ("hw/acpi/ich9: Set ACPI PCI hot-plug as default on
                   Q35")

The reasons for enabling ACPI based hotplug for PCIe (q35) based
machines (as opposed to native hotplug) are outlined in (b). There are
use cases where users would still want to use native
hotplug. Therefore, this config option enables users to choose either
ACPI based hotplug or native hotplug for bridges (for example for pcie
root port controller in q35 machines).

Qemu capability validation checks have also been added along with
related unit tests to exercise the new conf option.

Signed-off-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Laine Stump <laine@redhat.com>
2021-10-10 13:13:45 -04:00
Ani Sinha
8eadf82fb5 conf: introduce option to enable/disable pci hotplug on pci-root controller
This change introduces libvirt xml support to enable/disable hotplug on the
pci-root controller. It adds a 'target' subelement for the pci-root controller
with a 'hotplug' property. This property can be used to enable or disable
hotplug for the pci-root controller. For example, in order to disable hotplug
on the pci-root controller, one has to use set '<target hotplug='off'>' as
shown below:

<controller type='pci' model='pci-root'>
  <target hotplug='off'/>
</controller>

'<target hotplug='on'>' option would enable hotplug for pci-root controller.
This is also the default value. This option is only available for pc machine
types and is applicable for qemu/kvm accelerator only.This feature was
introduced from qemu version 5.2 with the following change in qemu repository:

3d7e78aa7777f ("Introduce a new flag for i440fx to disable PCI hotplug on the root bus")

The above qemu commit describes some reasons why users might to disable hotplug
on PCI root buses.

Related unit tests to exercise the new conf option has also been added.

Signed-off-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
2021-10-01 14:19:44 -04:00
Michal Privoznik
59e9fb98f5 Introduce <current/> property to virtio-mem
The virtio-mem has another property that isn't exposed yet:
current size exposed to the guest. Please note, that this is
different to <requested/> because esp. on sizing the memory
down guest may refuse to release some blocks. Therefore, let's
have another size to report in the XML. But because of its
nature, the <current/> won't be parsed and is report only (for
live XMLs).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-10-01 11:04:25 +02:00
Michal Privoznik
f931cb7f21 conf: Introduce virtio-mem <memory/> model
The virtio-mem is paravirtualized mechanism of adding/removing
memory to/from a VM. A virtio-mem-pci device is split into blocks
of equal size which are then exposed (all or only a requested
portion of them) to the guest kernel to use as regular memory.
Therefore, the device has two important attributes:

  1) block-size, which defines the size of a block
  2) requested-size, which defines how much memory (in bytes)
     is the device requested to expose to the guest.

The 'block-size' is configured on command line and immutable
throughout device's lifetime. The 'requested-size' can be set on
the command line too, but also is adjustable via monitor. In
fact, that is how management software places its requests to
change the memory allocation. If it wants to give more memory to
the guest it changes 'requested-size' to a bigger value, and if it
wants to shrink guest memory it changes the 'requested-size' to a
smaller value. Note, value of zero means that guest should
release all memory offered by the device. Of course, guest has to
cooperate. Therefore, there is a third attribute 'size' which is
read only and reflects how much memory the guest still has. This
can be different to 'requested-size', obviously. Because of name
clash, I've named it 'current' and it is dealt with in future
commits (it is a runtime information anyway).

In the backend, memory for virtio-mem is backed by usual objects:
memory-backend-{ram,file,memfd} and their size puts the cap on
the amount of memory that a virtio-mem device can offer to a
guest. But we are already able to express this info using <size/>
under <target/>.

Therefore, we need only two more elements to cover 'block-size'
and 'requested-size' attributes. This is the XML I've came up
with:

  <memory model='virtio-mem'>
    <source>
      <nodemask>1-3</nodemask>
      <pagesize unit='KiB'>2048</pagesize>
    </source>
    <target>
      <size unit='KiB'>2097152</size>
      <node>0</node>
      <block unit='KiB'>2048</block>
      <requested unit='KiB'>1048576</requested>
    </target>
    <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
  </memory>

I hope by now it is obvious that:

  1) 'requested-size' must be an integer multiple of
     'block-size', and
  2) virtio-mem-pci device goes onto PCI bus and thus needs PCI
     address.

Then there is a limitation that the minimal 'block-size' is
transparent huge page size (I'll leave this without explanation).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-10-01 11:02:53 +02:00
Hiroki Narukawa
36560f3551 conf: add queue_size option to disk
The option "queue-size" for virtio-blk was added in qemu-2.12.0, and
default value increased from qemu-5.0.0.

However, increasing this value may lead to drop of random access
performance.

Signed-off-by: Hiroki Narukawa <hnarukaw@yahoo-corp.jp>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-09-21 12:22:48 +02:00
Michal Privoznik
9b49c2c6d3 docs: Fix dimm example
In the example for <memory model='dimm'/> we show how to
configure hugepages as backend. In the example we show 4MiB
hugepages which are non-standard and thus at the first glance may
mislead users thinking that a regular sized pages (4K) will be
used. Use 2MiB as the value instead.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-09-13 12:45:17 +02:00
Stefan Hajnoczi
8ef93e5ba2 docs: virtiofs: use the preferred virtiofs spelling
The virtiofs project started off using "virtio-fs" but later switched to
the "virtiofs" spelling because it matches the spelling of the mount -t
virtiofs command-line. Update the kbase article with the new spelling so
it matches the virtiofs website.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-09-09 17:48:21 +02:00
Ján Tomko
cb6c650064 docs: formatdomain: fix typo
combiatnion -> combination

Fixes: 4ffc807214
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2021-08-26 16:32:46 +02:00
Peter Krempa
4ffc807214 qemu: Honor 'restart' action for 'on_poweroff'
We simply terminate qemu instead of issuing a reset as the semantics of
the setting dictate.

Fix it by handling it identically to 'fake reboot'.

We need to forbid the combination of 'onReboot' -> 'destroy' and
'onPoweroff' -> reboot though as the handling would be hairy and it
honetly makes no sense.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-25 15:32:44 +02:00
Peter Krempa
b1b85a475f qemu: Reject 'preserve' action for 'on_reboot'/'on_poweroff'/'on_crash'
The qemu driver didn't ever implement any meaningful handling for the
'preserve' action.

Forbid the flag in the qemu def validator and update the documentation
to be factual.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-25 15:32:44 +02:00
Peter Krempa
2b81fbb22e qemu: Reject 'rename-restart' action for 'on_reboot'/'on_poweroff'/'on_crash'
The qemu driver didn't ever implement any meaningful handling for the
'rename-restart' action.

At this point the following handling would take place:

'on_reboot' set to 'rename-restart' is ignored on guest-initiated
reboots, the guest simply reboots.

For on_poweroff set to 'rename-restart' the following happens:

guest initiated shutdown -> 'destroy'
libvirt initiated shutdown -> 'reboot'

In addition when 'on_reboot' is 'destroy' in addition to 'on_poweroff'
being 'rename-restart' the guest is able to execute instructions after
issuing a reset before libvirt terminates it. This will be addressed
separately later.

Forbid the flag in the qemu def validator and update the documentation
to be factual.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-25 15:32:44 +02:00
Pavel Hrdina
38b5f4faab conf: introduce support for Fibre Channel VMID
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 13:50:38 +02:00
Justin Gatzen
e7d579a2dd conf: Add grabToggle to evdev input
Add support for customizable grabToggle key combinations with
<input type='evdev'>.

Signed-off-by: Justin Gatzen <justin.gatzen@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-07-23 11:20:48 +02:00
Boris Fiuczynski
b823f7a781 docs: Add s390-pv documentation
Add documentation for launch security type s390-pv.

Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-07-21 13:30:30 +02:00
Kristina Hanicova
b78bfd4c54 docs: Allow 'id' attribute for 'cachetune' element
Even though 'id' attribute is output-only, we should accept xml
files containing it.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1941594

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-07-20 16:43:46 +02:00
Andrea Bolognani
499c38b22f docs: Fix information for default TPM version
The current information is not accurate, because the default
is 2.0 instead of 1.2 for the tpm-crb and tpm-spapr models.

Any detailed list will surely become obsolete and out of sync
with reality over time, so let's just document that the default
model depends on a number of factors and avoid getting any more
specific than that.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Liu Yiding <liuyd.fnst@fujitsu.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-07-01 16:15:05 +02:00
Ján Tomko
e8863b91fb conf: require target for external virtiofsd
When adding support for externally launched virtiofsd,
I was too liberal and did not require a target.

But the target is required, because it's passed to the
QEMU device, not to virtiofsd.

https://bugzilla.redhat.com/show_bug.cgi?id=1969232

Fixes: 12967c3e13
Fixes: 56dcdec1ac
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-06-17 10:51:24 +02:00
Peter Krempa
2c8b341af8 docs: formatdomain: Document disk serial truncation status quo
Disk serials are truncated arbitrarily and silently by qemu depending on
the device type and how they are configured. Since changing the current
state would lead to more regressions than we have now, document that the
truncation is arbitrary.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-06-07 17:01:14 +02:00
Daniel P. Berrangé
1e94e18e12 docs: add missing docs for some sound devices
Closes: https://gitlab.com/libvirt/libvirt/-/issues/173
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-06-04 15:33:08 +01:00
Daniel P. Berrangé
149da06144 docs: tweak heading name for <audio> element
The <audio> element is configuring exclusively a backend, not a device.

Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-06-04 15:32:56 +01:00
Daniel P. Berrangé
dfffcefff6 conf: add support for timer period audio setting
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-06-04 12:07:46 +01:00
Peter Krempa
be63e8703c conf: Introduce 'shareBacking' for <transient> disks
In case the user wants to share the disk image between multiple VMs the
qemu driver needs to hotplug such disks to instantiate the backends.
Since that doesn't work for all disk configs add a switch to force this
behaviour.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-05-24 20:38:08 +02:00
Kristina Hanicova
cff0444e51 conf: Parse/format XML input type 'evdev'
Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-05-21 14:29:09 +02:00