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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>
Use backticks to force monospace font instead of double quotes.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The top level heading didn't contain the word 'port'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Fix the referenced anchor in 'formatdomain.rst' right away.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
The first sentence was moved up a paragraph to stop treating the first
sub-heading as a page subtitle.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
Instead of creating an empty object and then setting keys one
at a time, it is possible to pass a dict object to
configuration_data(). This is nicer because it doesn't require
repeating the name of the cfg_data object over and over.
There is one exception: the 'conf' object, where we store values
that are used directly by C code. In that case, using a dict
object is not feasible for two reasons: first of all, replacing
the set_quoted() calls would result in awkward code with a lot
of calls to format(); moreover, since code that modifies it is
sprinkled all over the place, refactoring it would probably
make things more complicated rather than simpler.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The default values used by the library are determined at configure
time based on a number of factors, and we should reflect them in
the installed configuration file to make the comments it contains
more useful.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/263
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since the workaround is specific to macOS, only disable compiler
warnings when building on that platform.
While at it, update the comment to reflect the fact that the
workaround is needed for all versions of the OS, including the
modern ones that we currently target.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Recent refactor (v8.1.0-217-ga193f4bef6) generalized job related enums
and functions by changing "qemu" prefix to "vir" and moving them to
src/hypervisor/domain_job.[ch]. This was in most cases a good thing, but
async job phases are driver specific and the corresponding functions
remained in src/qemu/qemu_domainjob.[ch], but still their prefix was
changed to "vir". Let's change it back to "qemu".
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Document either my contributions or commits I helped review for
the upcoming release.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
I've came across an aarch64 system which supports hugepages up to
16GiB of size. However, I was unable to allocate them using
virsh allocpages. This is because cmdAllocpages() uses
vshCommandOptScaledInt(), which scales passed value into bytes,
but since the virNodeAllocPages() expects size in KiB the
variable holding bytes is then divided by 1024. However, the
limit for the biggest value passed to vshCommandOptScaledInt() is
UINT_MAX which is now obviously wrong, as it needs to be UINT_MAX
* 1024.
The same bug is in completer. But here, let's use ULLONG_MAX so
that we don't have to care about it anymore.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
While commit a5e659f0 removed the restriction against multiple queues
for the vdpa net device, there were some missing pieces. Configuring a
device statically and then starting the domain worked as expected, but
hotplugging a device didn't have the expected multiqueue support
enabled. Add the missing bits.
Consider the following device xml:
<interface type="vdpa">
<mac address="00:11:22:33:44:03" />
<source dev="/dev/vhost-vdpa-0" />
<model type="virtio" />
<driver queues='2' />
</interface>
Without this patch, hotplugging the above XML description resulted in
the following:
{"execute":"netdev_add","arguments":{"type":"vhost-vdpa","vhostdev":"/dev/fdset/0","id":"hostnet1"},"id":"libvirt-392"}
{"execute":"device_add","arguments":{"driver":"virtio-net-pci","netdev":"hostnet1","id":"net1","mac":"00:11:22:33:44:03","bus":"pci.5","addr":"0x0"},"id":"libvirt-393"}
With the patch, hotplugging results in the following:
{"execute":"netdev_add","arguments":{"type":"vhost-vdpa","vhostdev":"/dev/fdset/0","queues":2,"id":"hostnet1"},"id":"libvirt-392"}
{"execute":"device_add","arguments":{"driver":"virtio-net-pci","mq":true,"vectors":6,"netdev":"hostnet1","id":"net1","mac":"00:11:22:33:44:03","bus":"pci.5","addr":"0x0"},"id":"libvirt-393"}
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2024406
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
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>
