In future commits we will need to store not just an array of
VIR_TRISTATE_SWITCH_* but also an additional integer. Follow the
example of TCG and introduce a structure where both the array an
integer can live.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Generating command line is pretty easy - just put tb-size=XXX
onto -accel tcg part. Note, that QEMU expects the size in MiB.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/229
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
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>
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>
In the QEMU driver, we allocate private source data unconditionally
for every chardev and the rest of the function just assumes it's there.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
As of ff024b60cc3 we are opening chardevs before starting QEMU.
However, we are also doing that before domain private directories
are created. This leaves us unable to create guest agent socket
which lives under priv->channelTargetDir.
While creating the dirs can be moved just before
qemuProcessPrepareHostBackendChardev() it's better to do it as
the very first step so that this kind of error is prevented in
future.
Fixes: ff024b60cc39d5d41b1e68728a00a47e103ec4dd
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Specifically, include non-option argument 'GUEST-XML-FILE'
in usage summary.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Userfaultfd is by default allowed only for privileged processes. Since
libvirt runs QEMU unprivileged, we need to enable unprivileged access to
userfaultfd to enable post-copy migration.
https://bugzilla.redhat.com/show_bug.cgi?id=1945420
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since the backend of the TPM is a chardev we can use the common helper
to instantiate it.
This commit also ensures proper ordering so that the backend chardev is
formatted before it's being referenced.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add handling to qemuDomainDeviceBackendChardevForeachOne and callbacks
so that we can later use 'qemuBuildChardevCommand' for TPM devices.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the API for qemuBuildChrChardevCommand is sane enough, we can
use it to centralize formatting of '-chardev' generally.
The 'virDomainVideoDef' doesn't use 'virDomainChrSourceDef' internally so
we create it for this occasion manually.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the API for qemuBuildChrChardevCommand is sane enough, we can
use it to centralize formatting of '-chardev' generally.
The 'virDomainFSDef' doesn't use 'virDomainChrSourceDef' internally so
we create it for this occasion manually.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the API for qemuBuildChrChardevCommand is sane enough, we can
use it to centralize formatting of '-chardev' generally.
For virtiofs we don't have a centrally stored chardev source so we
allocate one inline for temporary use.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add handling to qemuDomainDeviceBackendChardevForeachOne and callbacks
so that we can later use 'qemuBuildChardevCommand' for vhost-user disks
instead of a custom formatter.
Since we don't pass the FD for the vhost-user connection to qemu all of
the setup can be skipped.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Now that the parameter is unused we can remove it as well as from each
caller that doesn't need it any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When setting up TLS options from config in qemuDomainPrepareChardevSourceOne
we can also extract the x509 certificate path and default tlsVerify
setting so that 'qemuBuildChardevCommand' doesn't need to access the
config object any more.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Completely seprate the creation of the commandline string from the setup
of other objects instantiated on the commandline.
'qemuBuildChardevCommand' will aggregate the setup of individual
parameters such as -add-fd and setup of TLS and the -chardev parameter
itself while the code formatting the commandline will be moved into
qemuBuildChardevStr.
'fdset' names are then stored in qemuDomainChrSourcePrivate.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Make the callers construct the alias for the chardev so that the
function can be used also for code paths which use a different
convention.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'qemuBuildChrChardevStr' used a hybrid approach where some arguments
were directly added to '@cmd' while the commandline itself was returned
as a string.
This patch renames qemuBuildChrChardevStr to qemuBuildChardevCommand
and adds the argument directly to @cmd inside the function.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unify the cases for SCLP/SCLPLM/VIRTIO consoles as the code is
identical.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
We have just one case when we wish to wait for incomming connections for
a listening socket and that is for vhost-user network devices.
Passing this via a flag to qemuBuildChrChardevStr is unwieldy. Add a
field to qemuDomainChrSourcePrivate and populate it for our special
case inside of qemuDomainPrepareChardevSourceOne.
Since we wait for incomming connections only on startup of a new VM we
also need to pass in a flag whether qemuDomainPrepareChardevSourceOne
is called on a new start or on hotplug.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use the qemuDomainDeviceBackendChardevForeach helper to iterate all
eligible structs and convert the setup of the TLS defaults from the
config.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
'qemuBuildChrChardevStr' doesn't use these flags any more. Stop passing
them.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The opening of files for FD passing for a chardev backend was
historically done in the function which is formatting the commandline.
This has multiple problems. Firstly the function takes a lot of
parameters which need to be passed through the commandline formatters.
This made the 'qemuBuildChrChardevStr' extremely unappealing to the
extent that we have multiple other custom formatters in places which
didn't really want to use the function.
Additionally the function is also creating files in the host in certain
configurations which is wrong for a commandline formatter to do. This
meant that e.g. not all chardev test cases can be converted to use
DO_TEST_CAPS_LATEST as we attempt to use such code path and attempt to
create files outside of the test directory.
This patch moves the opening of the filedescriptors from
'qemuBuildChrChardevFileStr' into a new helper
'qemuProcessPrepareHostBackendChardevOne' which is called using
'qemuDomainDeviceBackendChardevForeach'.
To preserve test behaviour we also have another instance
'testPrepareHostBackendChardevOne' which is populating mock
filedescriptors.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Introduce qemuDomainDeviceBackendChardevForeach(One) which calls the
callback if either given device has a chardev backend or for all chardev
backends of all devices.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically free 'cmd' and 'created' by moving them to the appropriate
scopes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use automatic memory freeing for the temporary bitmap and remove the
pointless 'cleanup' section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use automatic memory freeing for the temporary bitmap and remove the
pointless 'cleanup' section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use automatic memory freeing for the temporary bitmap and remove the
pointless 'cleanup' section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use automatic memory freeing for the 'ret' bitmap and remove the
pointless 'cleanup' section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Automatically free the 'slotmap' bitmap and get rid of the cleanup
section.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This reverts commit 69977ff10560a80bcf5bf93f1a3f819a2d1623ca.
After previous commit it's no longer possible that QEMU driver is
not initialized in qemuStateShutdownPrepare() nor
qemuStateShutdownWait().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Use the modern style and fix all offenders since new functions were
already using the contemporary style.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The error is a hard error, so the part about fallback doesn't make
sense. Spell the attribute the same way as it's in XML.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For x86, we invalidate qemu caps cache if the host CPUID changed.
However other cpu drivers do not have the 'getHostData' function
implemented.
Skip the comparison if we do not have host CPUData available,
since virCPUDataIsIdentical always returns an error in that case.
https://bugzilla.redhat.com/show_bug.cgi?id=2030119
Fixes: 3bc6f46d305ed82f7314ffc4c2a66847b831a6bd
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use it to enable the 'write-blocking' mode of 'blockdev-mirror'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Wire up the flag to enable the 'write-blocking' 'copy-mode' of
'blockdev-mirror'.
It's not supported by all qemu versions but it is with those which we
use -blockdev with so we can use that instead of adding another custom
capability as we use blockdev for some time now.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Forces the data to be written synchronously to both the original and the
mirrored images which ensures that the job will reach synchronized
phase.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move the construction of the command from the variable declaration so
that it doesn't exceed the line length and we can also move the logic of
determining the protocol outside of the command construction.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The migration API takes specific flags which are then converted to
boolean parameters for the command. Extract the flag into helper
variables rather than using ternary operators while constructing the
command itself.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Instead of a ternary operator we can use the existing helper.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
