Commit Graph

9240 Commits

Author SHA1 Message Date
Jiri Denemark
02e5cb0d1a qemu: Introduce virQEMUCapsGetMachineDefaultCPU
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
a882db7bea qemu: Probe for default CPU types
QEMU 4.2.0 will report default CPU types used by each machine type and
we will want to start using it.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
e41e3b29be qemu: Probe machine types for both KVM and TCG
Almost all TCG query-machines replies match KVM. The only exceptions are
4.2.0 replies on s390x which differ in the reported default CPU type.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
d5d2d8e34a qemu: Make probed machine types depend on accelerator
Some specifics of machine types may depend on the accelerator and thus
the data should be moved to virQEMUCapsAccel. The TCG machine types are
just copied from the ones probed for KVM to simplify the changes to
qemucapabilitiestest data files.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
518948997c qemu: Introduce virQEMUCapsCopyMachineTypes
The function copies machine type data from one QEMU caps structure to
another.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
4df4dcd270 qemu: Use typedef for virQEMUCapsMachineType
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
a068413e7c qemu: Move machine type data in capabilities cache
In preparation for making machine types dependent on the accelerator,
the <machine> elements are formatted between <cpu type='kvm'> and
<cpu type='tcg'>.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
de18836ea7 qemu: Pass virDomainVirtType to APIs dealing with machine types
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
4682197641 qemu: Split out virQEMUCapsFormatCache
All the code for formatting machine type data was moved to a standalone
virQEMUCapsFormatMachines function.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
299f12ad1f qemu: Split out virQEMUCapsLoadCache
All the code for loading machine type data was moved to a standalone
virQEMUCapsLoadMachines function.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
21b2025a0e qemu: Make virQEMUCapsIsMachineSupported static
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
42adc0b87d qemu: Make virQEMUCapsGetMachineTypesCaps static
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
c8fe9102fc qemu: Refactor probing of accelerator dependent data
To avoid duplicating code which selects the right virQEMUCapsAccel data
to be filled during probing.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
03828af3af qemu: Introduce virQEMUCapsProbeCPUDefinitionsTest
It is a tiny wrapper around virQEMUCapsProbeQMPCPUDefinitions which will
soon get private parameters and thus it cannot be exposed outside
qemu_capabilities.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
fa4db8ed6a qemu: Refactor virQEMUCapsFormatAccel
And make it use virQEMUCapsGetAccel once rather than repeating the same
code in all functions called from virQEMUCapsFormatAccel.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
4fd90d06e6 qemu: Refactor virQEMUCapsLoadAccel
And make it use virQEMUCapsGetAccel once rather than repeating the same
code in all functions called from virQEMUCapsLoadAccel.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
948d2fbb66 qemu: Drop virQEMUCapsGetHostCPUData
It was very similar to virQEMUCapsGetAccel.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
9a6fc6987c qemu: Introduce and use virQEMUCapsGetAccel
The function can be used to get the pointer to all data which depend on
the accelerator.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
8c9b93cd26 qemu: Introduce virQEMUCapsAccelClear
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
2e754ed694 qemu: Introduce virQEMUCapsAccelCopy
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
8f0948767b qemu: Introduce virQEMUCapsAccel structure
This is container for capabilities data that depend on the accelerator.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
fe893a19eb qemu: Add virQEMUCaps{Load,Format}Accel
The new functions are designed to load and format capabilities which
depend on the accelerator (host CPU expansion and CPU models).

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
34fc23a43b qemu: Drop unused virQEMUCapsGetDefaultMachine
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
94b9e68263 qemu: Store typename from query-cpu-definitions in qemuCaps
We need to create a mapping between CPU model names and their
corresponding QOM types.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
bc0b22884a qemu: Switch qemuCaps to use qemuMonitorCPUDefs
We will need to keep some QEMU-specific data for each CPU model
supported by a QEMU binary. Instead of complicating the generic
virDomainCapsCPUModelsPtr, we can just directly store
qemuMonitorCPUDefsPtr returned by the capabilities probing code.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:06 +01:00
Jiri Denemark
857b88f5c3 qemu: Split virQEMUCapsFetchCPUModels
Most of the code moved to a new virQEMUCapsFetchCPUDefinitions function
and the existing virQEMUCapsFetchCPUModels just becomes a small wrapper
around virQEMUCapsFetchCPUDefinitions and virQEMUCapsCPUDefsToModels.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
76baa994b7 qemu: Rename virQEMUCaps{Get,Fetch}CPUDefinitions
The functions return virDomainCapsCPUModelsPtr and thus they should be
called *CPUModels for consistency. Functions called *CPUDefinitions will
work on qemuMonitorCPUDefsPtr.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
a8ca6b4dc4 qemu: Introduce virQEMUCapsCPUDefsToModels
The function translates qemuMonitorCPUDefsPtr (used by QEMU caps probing
code) into virDomainCapsCPUModelsPtr used by domain capabilities.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
b3ef7efaa5 qemu: Use virDomainCapsCPUUsable in qemuMonitorCPUDefInfo
While virDomainCapsCPUModel structure contains 'usable' field with
virDomainCapsCPUUsable type, the lower level structure specific to QEMU
driver used virTriStateBool for the same thing and we had to translate
between them.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
7f091cb6ed qemu: Use g_autofree in virQEMUCapsLoadCPUModels
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
ffcb39cbc1 qemu: Add qemuMonitorCPUDefsCopy
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
7e0a6ac04b qemu: Flatten qemuMonitorCPUDefs.cpus
Let's store qemuMonitorCPUDefInfo directly in the array of CPUs in
qemuMonitorCPUDefs rather then using an array of pointers.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
3aa53dcf01 qemu: Introduce qemuMonitorCPUDefs struct
It is a container for a CPU models list (qemuMonitorCPUDefInfo) and a
number of elements in this list.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
a94f67ee69 qemu: Change return type of virQEMUCapsFetchCPUDefinitions
The function would return a valid virDomainCapsCPUModelsPtr with empty
CPU models list if query-cpu-definitions exists in QEMU, but returns
GenericError meaning it's not in fact implemented. This behaviour is a
bit strange especially after such virDomainCapsCPUModels structure is
stored in capabilities XML and parsed back, which will result in NULL
virDomainCapsCPUModelsPtr rather than a structure containing nothing.

Let's just keep virDomainCapsCPUModelsPtr NULL if the QMP command is not
implemented and change the return value to int so that callers can
easily check for failure or success.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
fb35cbb329 qemu: Use g_autoptr in qemuMonitorJSONGetCPUDefinitions
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
7e3e31444c qemu: Use virQEMUCapsGetCPUDefinitions more
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
4d74990143 qemu: Filter models in virQEMUCapsGetCPUDefinitions
Some callers of virQEMUCapsGetCPUDefinitions will need to filter the
returned list of CPU models. Let's add the filtering parameters directly
to virQEMUCapsGetCPUDefinitions to avoid copying the CPU models list
twice.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Jiri Denemark
e20a11eecf qemu: Copy CPU models in virQEMUCapsGetCPUDefinitions
Rather than returning a direct pointer the list stored in qemuCaps the
function now creates a new copy of the CPU models list.

The main purpose of this seemingly useless change is to update callers
to free the result returned by virQEMUCapsGetCPUDefinitions because the
internals of this function will change significantly in the following
patches.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 17:22:05 +01:00
Peter Krempa
e136236158 qemu: checkpoint: Use qemuMonitorTransactionBitmapMergeSourceAddBitmap
Use the new helper in qemuCheckpointDiscard rather than constructing the
array manually.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 15:43:11 +01:00
Michal Privoznik
cdd8a6690e qemu: Forcibly mknod() even if it exists
Another weird bug appeared concerning qemu namespaces. Basically
the problem is as follows:

1) Issue an API that causes libvirt to create a node in domain's
   namespace, say /dev/nvme0n1 with 8:0 as major:minor (the API can
   be attach-disk for instance). Or simply create the node from a
   console by hand.

2) Detach the disk from qemu.

3) Do something that makes /dev/nvme0n1 change it's minor number.

4) Try to attach the disk again.

The problem is, in a few cases - like disk-detach - we don't
remove the corresponding /dev node from the mount namespace
(because it may be used by some other disk's backing chain). But
this creates a problem, because if the node changes its MAJ:MIN
numbers we don't propagate the change into the domain's
namespace. We do plain mknod() and ignore EEXIST which obviously
is not enough because it doesn't guarantee that the node has
updated MAJ:MIN pair.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1752978

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-20 14:05:37 +01:00
Pavel Hrdina
f0da677956 bootstrap.conf: drop c-strcasestr gnulib module
Last usage was removed by commit
<41f88886198e231285cc813f8c0687c8ec5c9488> and commit
<0f4d31720430b4e3735064cc0d8f88a1a438e154> forgot to drop include.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 13:31:13 +01:00
Peter Krempa
a4762294b9 qemu: monitor: Remove non-transaction based dirty bitmap APIs
We replaced them by use of transaction to simplify possible failure
scenarios.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 13:24:54 +01:00
Peter Krempa
cec4e32998 qemu: checkpoint: Fix rollback and access to unlocked 'vm' when deleting checkpoints
Delete/merge bitmaps when deleting checkpoints using a 'transaction' so
that we don't have to deal with halfway-failed scenarios and also fix
access to 'vm' while in the monitor lock.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-20 13:24:54 +01:00
Daniel Henrique Barboza
6c63adc4a0 qemu: remove unneeded cleanup labels
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-11-19 15:22:37 +01:00
Michal Privoznik
6c37ee4da2 qemuProcessStop: Set @def early
The @def variable holds pointer to the domain defintion, but is
set only somewhere in the middle of the function. This is
suboptimal.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
2019-11-19 10:25:56 +01:00
Ján Tomko
af5aa266ed g_mkstemp_full: pass O_RDWR
This flag is not implied by g_mkstemp_full, only by g_mkstemp.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reported-by: Bjoern Walk <bwalk@linux.ibm.com>
Fixes: 4ac4773040
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-11-18 18:49:02 +01:00
Erik Skultety
2816fe2e84 qemu: Fix NULL ptr dereference caused by qemuDomainDefFormatBufInternal
qemuDomainDefFormatBufInternal function wasn't testing whether the CPU
was actually defined in the XML and saving such a domain resulted in the
following backtrace:

0 in qemuDomainMakeCPUMigratable (cpu=0x0)
1 in qemuDomainDefFormatBufInternal()
2 in qemuDomainDefFormatXMLInternal()
3 in qemuDomainDefFormatLive()
4 in qemuDomainSaveInternal()
5 in qemuDomainSaveFlags()
6 in qemuDomainSave()
7 in virDomainSave()

Signed-off-by: Erik Skultety <eskultet@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-18 14:32:49 +01:00
Pavel Hrdina
4c0398b528 qemu_process: fix starting VMs if machine group has limited cpuset.cpus
Commit <f136b83139c63f20de0df3285d9e82df2fb97bfc> reworked process
affinity setting but did not take cgroups into account which introduced
an issue when starting VM with custom cpuset.cpus for the whole machine
group.

If the machine group is limited to some pCPUs libvirt should not try to
set a VM to run on all pCPUs as it will result in permission denied when
writing to cpuset.cpus.

To fix this the affinity has to be set separately from cgroups cpuset.

Resolves: <https://bugzilla.redhat.com/show_bug.cgi?id=1746517>

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-11-18 10:41:44 +01:00
Pavel Hrdina
43b01ef2d6 replace use of gnulib snprintf by g_snprintf
Glib implementation follows the ISO C99 standard so it's safe to replace
the gnulib implementation.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-11-15 15:07:40 +01:00
Jonathon Jongsma
95f5ac9ae5 Add API to change qemu agent response timeout
Some layered products such as oVirt have requested a way to avoid being
blocked by guest agent commands when querying a loaded vm. For example,
many guest agent commands are polled periodically to monitor changes,
and rather than blocking the calling process, they'd prefer to simply
time out when an agent query is taking too long.

This patch adds a way for the user to specify a custom agent timeout
that is applied to all agent commands.

One special case to note here is the 'guest-sync' command. 'guest-sync'
is issued internally prior to calling any other command. (For example,
when libvirt wants to call 'guest-get-fsinfo', we first call
'guest-sync' and then call 'guest-get-fsinfo').

Previously, the 'guest-sync' command used a 5-second timeout
(VIR_DOMAIN_QEMU_AGENT_COMMAND_DEFAULT), whereas the actual command that
followed always blocked indefinitely
(VIR_DOMAIN_QEMU_AGENT_COMMAND_BLOCK). As part of this patch, if a
custom timeout is specified that is shorter than
5 seconds,  this new timeout is also used for 'guest-sync'. If there is
no custom timeout or if the custom timeout is longer than 5 seconds, we
will continue to use the 5-second timeout.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-11-14 19:10:01 +01:00
Ján Tomko
ef88698668 Use g_mkdtemp instead of mkdtemp
Prefer the GLib version to the one from gnulib.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-11-14 19:02:31 +01:00
Ján Tomko
4ac4773040 Use g_mkstemp_full instead of mkostemp(s)
With g_mkstemp_full, there is no need to distinguish between
mkostemp and mkostemps (no suffix vs. a suffix of a fixed length),
because the GLib function looks for the XXXXXX pattern everywhere
in the string.

Use S_IRUSR | S_IWUSR for the permissions and do not pass O_RDWR
in flags since it's implied.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-11-14 19:02:31 +01:00
Jonathon Jongsma
4b95738c8f qemu: add 'ramfb' attribute for mediated devices
The 'ramfb' attribute provides a framebuffer to the guest that can be
used as a boot display for the vgpu

For example, the following configuration can be used to provide a vgpu
with a boot display:

    <hostdev mode='subsystem' type='mdev' model='vfio-pci' display='on' ramfb='on'>
        <source>
            <address uuid='$UUID'/>
        </source>
    </hostdev>

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
c66f2be6f1 qemu: use domain caps to validate video device model
As suggested by Cole, this patch uses the domain capabilities to
validate the supported video model types. This allows us to remove the
model type validation from qemu_process.c and qemu_domain.c and
consolidates it all in a single place that will automatically adjust
when new domain capabilities are added.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
42cc3eb912 qemu: move validation of video accel to qemu_domain.c
Continue consolidation of video device validation started in previous
patch.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
425310d1c8 qemu: validate vhost-user video backend in qemu_domain.c
The goal is to move all of the video device validation to a single place
and use domain caps to validate the supported video device models. Since
qemuDomainDeviceDefValidateVideo() is called from
qemuProcessStartValidate(), these changes should not change anny
behavior.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
d5e9f47e76 qemu: set domain capability for video type "none"
In a follow-up commit, we will use the domain capabilities to validate
video device configurations, which means that we also need to make sure
that the domain capabilities include the "none" video device.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
eecab2e80b qemu: set domain capability for ramfb device
commit 9bfcf0f62d added the
QEMU_CAPS_DEVICE_RAMFB capability but did not set the domain capability.
This patch sets the domain capability for the ramfb device and updates
the tests.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
c69e6edea3 qemu: use g_autoptr in qemuDomainDeviceDefValidate()
This allows us to simplify the function and avoid jumping to 'cleanup'.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Jonathon Jongsma
ed831437af qemu: fix domain device validation
When the virDomainCapsDeviceDefValidate() function returned an error
status (-1), we were aborting the function early, but returning the
default return value (0). This patch properly returns an error in that
case.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-14 11:37:50 -05:00
Daniel Henrique Barboza
6ab3d0b9ea qemu: hotplug: remove unused cleanup labels
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-14 10:46:57 -05:00
Daniel Henrique Barboza
54c17f8498 qemu: hotplug: use g_autoptr() with virConnectPtr
Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-14 10:46:57 -05:00
Peter Krempa
ffd151d17b qemu: domcaps: Simplify adding new domaincaps based on qemu caps
Add a helper which converts qemu emulator capabilities to the domain
capability XML. This will simplify future additions of new features.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 15:50:43 +01:00
Peter Krempa
caa6dc3b31 domaincaps: Store domain capability features in an array
Declare the capabilities as enum values and store them in an array. This
makes adding new features more straightforward and simplifies the
formatter which now doesn't require changing.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 15:50:43 +01:00
Peter Krempa
ae92101be4 qemu: domcaps: Initialize all features
While the qemu driver currently implements all domain capability
features, we should initialize all features using the helper similarly
to how we do it in drivers which don't support any.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 15:50:43 +01:00
Jiri Denemark
18eeb75daf conf: Drop nameLen parameter from virDomainCapsCPUModelsAdd
All callers use nameLen == -1 anyway.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 15:13:38 +01:00
Jidong Xia
9ec64b591e qemu: cold-plug of sound
With this patch users can cold plug some sound devices.
use "virsh attach-device vm sound.xml --config" command.
Consider the following sound.xml for a domain:
    <sound model='ich6'>
         <address type='pci' domain='0x0000' bus='0x00' slot='xxx' function='0'/>
    </sound>

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Jidong Xia <xiajidong@cmss.chinamobile.com>
2019-11-14 08:42:59 -05:00
Mao Zhongyi
35e1547870 qemu/qemu_migration_params: use virStringParseYesNo helper
A function virStringParseYesNo was added to convert
string 'yes' to true and 'no' to false, so use this
helper to replace 'STREQ(.*, \"yes\")' and
'STREQ(.*, \"no\")' as it allows us to drop several
repetitive if-then-else string->bool conversion blocks.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
2019-11-14 08:14:50 -05:00
Ján Tomko
a8ee07e0d1 qemu: use GUINT32_SWAP_LE_BE
Use this GLib macro instead of bswap_32 from gnulib.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2019-11-14 14:06:49 +01:00
Peter Krempa
19cfd7e598 qemu: gpu: Sanitize error values in qemuVhostUserGPUGetPid
The caller doesn't care about the actual return value, so return -1
rather than errno.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Peter Krempa
e22d844ef7 qemu: tpm: Sanitize error values in qemuTPMEmulatorGetPid
The callers don't care about the actual return value, so return -1
rather than errno.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Peter Krempa
c3ce83678c qemu: tpm: Use g_autofree in qemuTPMEmulatorGetPid
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Peter Krempa
794c9ec535 qemu: domain: Use g_file_read_link instead of virFileReadLink
In an effort to remove as much gnulib usage as possible let's
reimplement virFileReadLink. Since it's used in two places only I opted
to open-code it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Peter Krempa
f6cccece48 qemu: snapshot: Fix inactive external snapshots when backing chain is present
The inactive external snapshot code replaced the file name in the
virStorageSource but did not touch the backing files. This meant that
after an inactive snapshot the backing chain recorded in the inactive
XML (which is used with -blockdev) would be incorrect.

Fix it by adding a new layer if there is an existing chain and replacing
the virStorageSource struct fully when there is no chain.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Peter Krempa
b036834eae qemu: blockjob: Transfer 'readonly' state of images after active layer block commit
When commiting a different image becomes the disk source. Since we store
the readonly flag per-image we must update it to the same state the
original image had.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-14 12:42:09 +01:00
Daniel Henrique Barboza
f46eb511a2 qemu_hotplug.c: user-friendlier setvcpus timeout error message
The current 'setvcpus' timeout message requires a deeper
understanding of QEMU/Libvirt internals to proper react to it.
One who knows how setvcpus unplug work (it is an asynchronous
operation between QEMU and guest that Libvirt can't know for
sure if it failed, unless an explicit error happened during the
timeout period) will read the message and not assume a failed
operation. But the regular user, most often than not, will read
it and believe that the unplug operation failed.

This leads to situations where the user isn't exactly relieved
when accessing the guest and seeing that the unplug operation
worked. Instead, the user feel mislead by the timeout message
setvcpus threw.

Changing the timeout message to let the user know that the
unplug status is not known, and manual inspection in the guest
is required, is not a silver bullet. But it gives a more
realistic expectation of what happened, as best as we can tell
from Libvirt side anyways.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-13 15:03:40 -05:00
Daniel Henrique Barboza
2fe78a833e qemu: Remove qemu_hotplugpriv.h and qemuDomainRemoveDeviceWaitTime
qemu_hotplugpriv.h is a header file created to share a global variable
called 'qemuDomainRemoveDeviceWaitTime', declared in qemu_hotplug.c,
to other files that would want to change the timeout value
(currently, only tests/qemuhotplugtest.c).

Previous patch deprecated the variable, using qemu_driver->unplugTimeout
to set the timeout instead. This means that the header file is now
unused, and can be safely discarded.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-13 15:03:40 -05:00
Daniel Henrique Barboza
e03e27ee08 qemu_hotplug.c: adding qemuDomainGetUnplugTimeout
For some architectures and setups, device removal can take
longer than the default 5 seconds. This results in commands
such as 'virsh setvcpus' to fire timeout messages even if
the operation were successful in the guest, confusing the
user.

This patch sets a new 10 seconds unplug timeout for PPC64
guests. All other archs will keep the default 5 seconds
timeout.

Instead of putting 'if PPC64' conditionals inside qemu_hotplug.c
to set the new timeout value, a new function called
qemuDomainGetUnplugTimeout was added. The timeout value is then
retrieved when needed, by passing the correspondent DomainDef
object. This approach allows for different guest architectures
to have distint unplug timeout intervals, regardless of the
host architecture. This design also makes it easier to
modify/enhance the unplug timeout logic in the future
(allow for special timeouts for TCG domains, for example).

A new mock file was created to work with qemuhotplugtest.c,
given that the test timeout is significantly shorter than
the actual timeout value in qemu_hotplug.c.

The now unused 'qemuDomainRemoveDeviceWaitTime' global can't
be simply erased from qemu_hotplug.c though. Next patch will
remove it properly.

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Suggested-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-13 15:03:40 -05:00
Ján Tomko
9985679c0a Remove VIR_STRDUP usage that snuck in
Fixes: 224d269f19

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-13 17:01:38 +01:00
Peter Krempa
107f7a2d16 qemu: domain: Convert child buffers to use VIR_BUFFER_INIT_CHILD
Use the new helper to initialize child XML element buffers.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-13 09:10:30 +01:00
Peter Krempa
9a2ca9c947 conf: capabilities: Refactor API for setting guest capability features
Remove the need to pass around strings and switch to the enum values
instead.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-13 08:19:37 +01:00
Peter Krempa
09afb14a82 qemu: driver: Remove unused 'driver' from qemuDomainSnapshotFSFreeze/Thaw
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2019-11-13 08:15:02 +01:00
Jiri Denemark
9cd03f7957 cpu_map: Drop pconfig from Icelake-Server CPU model
The pconfig feature was enabled in QEMU by accident in 3.1.0. All other
newer versions do not support it and it was removed from the
Icelake-Server CPU model in QEMU.

We don't normally change our CPU models even when QEMU does so to avoid
breaking migrations between different versions of libvirt. But we can
safely do so in this specific case. QEMU never supported enabling
pconfig so any domain which was able to start has pconfig disabled.

With a small compatibility hack which explicitly disables pconfig when
CPU model equals Icelake-Server in migratable domain definition, only
one migration scenario stays broken (and there's nothing we can do about
it): from any host to a host with libvirt < 5.10.0 and QEMU > 3.1.0.

https://bugzilla.redhat.com/show_bug.cgi?id=1749672

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 20:14:16 +01:00
Jiri Denemark
ac34e14159 qemu: Drop disabled CPU features unknown to QEMU
When a CPU definition wants to explicitly disable some features that are
unknown to QEMU, we can safely drop them from the definition before
starting QEMU. Naturally QEMU won't enable such features implicitly.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 20:14:16 +01:00
Jiri Denemark
668797dc5c cpu_conf: Pass policy to CPU feature filtering callbacks
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 20:14:15 +01:00
Daniel Henrique Barboza
215007f24f qemu_monitor_json.c: remove unneeded cleanup label
qemuMonitorJSONBlockIoThrottleInfo uses a macro called
GET_THROTTLE_STATS that's defined outside of the function,
which references a 'cleanup' label. GET_THROTTLE_STATS is
only used inside qemuMonitorJSONBlockIoThrottleInfo (in fact,
the macro is undef right after it) thus it is safe to erase
the 'cleanup' reference inside the macro, then proceed
with the usual cleanup label removal inside
qemuMonitorJSONBlockIoThrottleInfo.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-12 17:54:01 +01:00
Bjoern Walk
3666d7ac69 qemu: hotplug: ensure address generation for vfio-ccw
When attaching a mediated host device of model vfio-ccw without
specifying a guest-address, none is generated by libvirt. Let's fix this
and make sure to generate a device address during live-hotplug.

Reviewed-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Signed-off-by: Bjoern Walk <bwalk@linux.ibm.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-12 16:43:14 +01:00
Michal Privoznik
8eaa708991 Use g_strdup_vprintf() instead of virVasprintf() everywhere
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-12 16:15:59 +01:00
Michal Privoznik
d4e5b98330 qemu: Use g_strdup_printf() instead of virAsprintf()
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2019-11-12 16:15:58 +01:00
Michal Privoznik
f4eb27a9b4 make check-driverimpls work again
Previously we generated all source files into $srcdir which is no
longer true. This means that we can't just blindly prepend each
source file with $srcdir.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 15:00:01 +01:00
Michal Privoznik
4ae7181376 src: Make check-aclrules work again
Previously we generated all source files into $srcdir which is no
longer true. This means that we can't just blindly prepend each
source file with $srcdir.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 15:00:01 +01:00
Peter Krempa
6b9f2e8847 qemu: caps: Make capability filler functions void
Most of them don't have anything to report so we can simplify the logic.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 14:37:55 +01:00
Peter Krempa
e60174fb3a qemu: caps: Rework memory allocation in virQEMUCapsFillDomainFeatureSEVCaps
Use g_new0 instead of VIR_ALLOC to avoid error cases.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 14:37:49 +01:00
Mao Zhongyi
f62f729b42 qemu: remove duplicate header files
"#include vircgroup.h" appears in both qemu_cgroup.h and
qemu_cgroup.c, and qemu_cgroup.c contains qemu_cgroup.h,
so remove the duplicate declarations.

Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2019-11-12 13:45:31 +01:00
Peter Krempa
8a2c37c4f6 qemu: snapshot: split out preparation of a snapshot with blockdev
Separate the blockdev code since it makes the original function lengthy.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
2019-11-12 08:51:50 +01:00
Peter Krempa
3e2e627287 qemu: command: Use XML based disk bus convertor in error message
The qemu driver has an internal implementation for converting disk bus
to string for use with qemu. This should not be used in error messages
though as we want to report the string based on the XML value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
ACKed-by: Eric Blake <eblake@redhat.com>
2019-11-12 08:51:50 +01:00
Michal Privoznik
75597f022a qemu: Warn verbosely if using old loader:nvram pairs
There are two ways for specifying loader:nvram pairs:

  1) --with-loader-nvram configure option
  2) nvram variable in qemu.conf

Since we have FW descriptors, using this old style is
discouraged, but not as strong as one would expect. Produce more
warnings:

  1) produce a warning if somebody tries the configure option
  2) produce a warning if somebody sets nvram variable and at
     least on FW descriptor was found

The reason for producing warning in case 1) is that package
maintainers, who set the configure option in the first place
should start moving towards FW descriptors and abandon the
configure option. After all, the warning is printed into config
output only in this case.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1763477

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-12 08:34:37 +01:00
Pavel Hrdina
0985a9597b src: stop distributing generated source files
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-08 17:07:57 +01:00
Pavel Hrdina
b98f90cf91 src: access: generate source files into build directory
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-08 17:07:57 +01:00
Michal Privoznik
3d46d684d1 qemu: Check for job being set when getting iothread stats
The qemuDomainGetStatsIOThread() accesses the monitor by calling
qemuDomainGetIOThreadsMon(). And it's also marked as "need
monitor" in qemuDomainGetStatsWorkers[]. However, it's not
checking if acquiring job was successful.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
2019-11-08 16:25:51 +01:00