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Up until a few commits ago, libvirt produced this XML and so
we need to be able to read it back to prevent a bunch of
error : virXMLPropEnumInternal:516 : XML error: Invalid value
for attribute 'value' in element 'allowReboot': 'default'
messages from being logged on daemon upgrade when there are
running guests.
Fixes: 0fe2d8dd33
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We need it for a single scenario in which prop='default' has to
be treated as valid input.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
If the value is VIR_TRISTATE_BOOL_ABSENT we should just omit
the element entirely.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Found when building on Fedora 36 on s390x.
C compiler for the host machine: gcc (gcc 12.0.1 "gcc (GCC) 12.0.1 20220308 (Red Hat 12.0.1-0)")
C linker for the host machine: gcc ld.bfd 2.37-24
In function ‘cpuTestUpdateLiveCompare’,
inlined from ‘cpuTestUpdateLive’ at ../dist-unpack/libvirt-8.2.5/tests/cputest.c:784:12:
../dist-unpack/libvirt-8.2.5/tests/cputest.c:696:21: warning: potential null pointer dereference [-Wnull-dereference]
696 | featAct->policy == VIR_CPU_FEATURE_REQUIRE) ||
| ~~~~~~~^~~~~~~~
Signed-off-by: Boris Fiuczynski <fiuczy@linux.ibm.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
All supported QEMUs now accept werror/rerror as argument for the
frontend disk device, so we can remove the old code.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Starting with qemu-3.1 we always have the '-overcommit' argument and use
it instead of '-realtime'. Remove the capability check and fix all
fake-caps tests.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The flag was based on a version check which no longer made sense. Remove
the flag by replacing it's only use by an arch-check which is equivalent
at this point.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All qemu versions now support FD passing either directly or via FDset.
Assume that we always have this capability so that we can simplify
chardev handling in many cases.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For modern qemu versions we use the presence of 'set-numa-node' qmp
command.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Some version checks no longer make sense as the minimum supported qemu
is now qemu-3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As of April 23 2022, Ubuntu 20.04 will be out for two years, which means
we no longer have to support Ubuntu 18.04 along with qemu-2.11 shipped
with it.
This then brings the minimum qemu version we have to support to
qemu-3.1:
Debian 10/Stable: 3.1
OpenSUSE Leap 15.3: 5.2
Ubuntu 20.04: 4.2
RHEL/Centos 8.4: 4.2
Next event in this space will be 2023/07/06 when Debian 11 will be out
for two years.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Upcoming patches will raise the minimum required qemu version to 3.1.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
As of April 23 2022, Ubuntu 20.04 will be out for two years, which per
our platform support policy means we no longer have to support
Ubuntu 18.04.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virtio-iommu needs to be an integrated device, and our address
assignment code will make sure that is the case. If the user has
provided an explicit address, however, we should make sure any
addresses pointing to a different bus are rejected.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virtio-iommu is a PCI device and attempts to use a different
address type should be rejected.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The device is configured to be an integrated endpoint, as is
necessary for it to function correctly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is needed so that IOMMU devices can have addresses.
Existing IOMMU devices (intel-iommu and SMMUv3) are system
devices and as such don't have an address associated to them, but
virtio-iommu is a PCI device and needs one.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
virtio-iommu doesn't work without ACPI, so we need to make sure
the latter is enabled.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This capability detects the availability of the boot-bypass
property of the virtio-iommu-pci device.
This property was only introduced in QEMU 7.0 but, since the
device has been around for much longer, we end up querying its
properties for several more releases. As I don't have convenient
access to the 10+ binaries necessary to regenerate the replies,
I just put some fake data in there.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This capability detects the availability of the virtio-iommu-pci
device.
Note that, while this device is present even in somewhat old
versions of QEMU, it's only some recent changes that made it
actually usable for our purposes.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The altered code is functionally equivalent to the previous one,
but it's already laid down in a way that will make further
changes easier and less messy.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This new flag can be used to convince the PCI address assignment
algorithm to place a device directly on the root bus. It will be
used to implement support for virtio-iommu, which needs to be an
integrated device in order to work correctly.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The QEMU binary is built from the v7.0.0-rc2 tag.
This causes the argument to -device to be generated in JSON
format, same as what 1a691fe1c8 has done for x86_64.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
The QEMU binary is built from the v7.0.0-rc2 tag.
Some of the additional capabilities that show up are a
consequence of more features being enabled in this build than
in the one used to generate the replies initially.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
With the recent changes, virQEMUCapsGetDefaultEmulator() has
become a trivial wrapper around this function, as well as its
only caller. Clean up the situation by merging the two.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Jim Fehlig <jfehlig@suse.com>
On a machine where no QEMU binary is installed, we end up logging
libvirtd: Cannot check QEMU binary /usr/libexec/qemu-kvm:
No such file or directory
which is not very useful in general, and downright misleading in
the case of operating systems that are not derived from RHEL.
This is a consequence of treating that specific path in a different
way from all other possible QEMU binary paths, and specifically of
not checking whether the file actually exists but sort of assuming
that it must do if we haven't found another QEMU binary earlier.
Address the issue by trying this path out in
virQEMUCapsFindBinaryForArch(), along with all the other possible
ones, and making sure it exists before returning it.
Reported-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Jim Fehlig <jfehlig@suse.com>
If we get to the bottom of the function we know that none of the
attempts to locate a QEMU binary has been successful, so we can
simply return NULL directly.
This makes it unnecessary variable used to store the path, for
which we can use a more descriptive name.
Lastly, comparing with NULL explicitly is somewhat uncommon in
libvirt and more verbose than the equivalent implicit comparison,
so get rid of it.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Jim Fehlig <jfehlig@suse.com>
The 'debuglogs' knowledge base page has way more info and examples on
how to set logging use it instead of the ad-hoc examples.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
