The default is raw, which corresponds to the historical
behavior and is also the only accepted value, at least for
now.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Right now, this results in loader->nvram being NULL, which is
reasonable: loader->nvramTemplate is stored separately, so if
the <nvram> element doesn't contain a path there is really no
useful information inside it.
However, this is about to change, so we will find ourselves
needing to hold on to loader->nvram even when no path is
present. Change the firmware handling code so that such a
scenario is dealt with appropriately.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This helper replaces qemuDomainNVRAMPathFormat() and also
incorporates some common operations that all callers of that
helper needed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Currently, firmware selection is performed as part of the
domain startup process. This mostly works fine, but there's a
significant downside to this approach: since the process is
affected by factors outside of libvirt's control, specifically
the contents of the various JSON firmware descriptors and
their names, it's pretty much impossible to guarantee that the
outcome is always going to be the same. It would only take an
edk2 update, or a change made by the local admin, to render a
domain unbootable or downgrade its boot security.
To avoid this, move firmware selection to the postparse phase.
This way it will only be performed once, when the domain is
first defined; subsequent boots will not need to go through
the process again, as all the paths that were picked during
firmware selection are recorded in the domain XML.
Care is taken to ensure that existing domains are handled
correctly, even if their firmware configuration can't be
successfully resolved. Failure to complete the firmware
selection process is only considered fatal when defining a
new domain; in all other cases the error will be reported
during startup, as is already the case today.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Now that we ignore all firmwares that are not in raw format
while performing autoselection, we can have descriptors for
firmware builds in QCOW2 format without breaking anything.
Note that the descriptors are arranged so that they have the
highest priority on aarch64, but the lowest one on x86_64.
This matches the expectation that QCOW2 will quickly be
adopted as the default on aarch64, where its use produces
significant benefits in terms of memory usage, while x86_64
will likely stick with raw for the foreseeable future.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Right now, if the descriptor with the highest priority happens
to describe a firmware in a format other than raw, no domain
that uses autoselection will be able to start.
A better approach is to filter out descriptors that advertise
unsupported formats during autoselection.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
At the moment, if SMM is explicitly disabled in the domain XML
but a firmware descriptor that requires SMM to be enabled has
the highest priority and otherwise matches the requirements,
we pick that firmware only to error out later, when the domain
is started.
A better approach is to take into account the fact that SMM is
disabled while performing autoselection, and ignore all
descriptors that advertise the requires-smm feature.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We already clear os.firmware, so it doesn't make sense to keep
the list of features around.
Moreover, our validation routines will reject an XML that
contains a list of firmware features but disables firmware
autoselection, so not clearing these means that the live XML
for a domain that uses feature-based autoselection can't be
fed back into libvirt.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
It doesn't make sense for non-local sources, since we can't
create or reset the corresponding NVRAM file.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This makes the code more compact and less awkward.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
For now we just allocate the object, so the only advantage is
that invocations are shorter and look a bit nicer.
Later on, its introduction will pay off by letting us change
things in a single spot instead of all over the library.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We already handle the <nvram> element in a separate helper,
which is cleaner than having all the logic in the top-level
virDomainLoaderDefParseXML() function.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Move all the boot related parts of qemuDomainDefPostParse()
to a separate helper.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Move all the machine type related parts of
qemuDomainDefPostParse() to a separate helper.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
These cover scenarios such as using the new, more verbose
format of the <nvram> element to point to a local path, mixing
firmware autoselection with non-local NVRAM files, and
explicitly disabling SMM when using firmware autoselection.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Some of the test cases had only been added to the xml2argv
test program and not to the xml2xml one.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Most of the differences, such as those in the domain name or
amount of memory, are fairly harmless, but they still make it
more cumbersome than necessary to directly compare different
input (and output) files.
More importantly, the use of unversioned machine types in some
of the test cases results in the descriptor-based autoselection
logic being effectively skipped, because the compatible machine
types as listed in them are only the versioned variants.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is already the case for the vast majority, but a few are
using explicit capabilities lists.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Most test cases are on 64-bit architectures already, but there
are a couple of exceptions.
Right now this works, but it will no longer fly after some
upcoming changes. Prepare for those by switching away from
32-bit architectures.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We already do this in qemuxml2argvtest.
Right now setting this doesn't change anything, but it will
become relevant later.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When starting (some) external helpers, callers of
qemuSecurityCommandRun() pass &exitstatus variable, to learn the
exit code of helper process (with qemuTPMEmulatorStart() being
the only exception). Then, if the status wasn't zero they produce
a generic error message, like:
"Starting of helper process failed. exitstatus=%d"
or, in case of qemuPasstStart():
"Could not start 'passt': %s"
This is needless as virCommandRun() (that's called under the
hood), can do both for us, if NULL was passed instead of
@exitstatus. Not only it appends exit status, it also reads
stderr of failed command producing comprehensive error message:
Child process (${args}) unexpected exit status ${exitstatus}: ${stderr}
Therefore, pass NULL everywhere. But in contrast with one of
previous commits which removed @cmdret argument, there could be a
sensible caller which might want to process exit code. So keep
the argument for now and just pass NULL.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Every single caller of qemuSecurityCommandRun() calls the
function as:
if (qemuSecurityCommandRun(..., &cmdret) < 0)
goto cleanup;
if (cmdret < 0)
goto cleanup;
(modulo @exitstatus shenanigans)
Well, there's no need for such complication. There isn't a single
caller (and probably will never be (TM)), that would need to
distinguish the reason for the failure. Therefore,
qemuSecurityCommandRun() can be made to pass the retval of
virCommandRun() called under the hood.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The usual pattern when starting a helper daemon is:
if (qemuSecurityCommandRun(..., &exitstatus, &cmdret) < 0)
goto cleanup;
if (cmdret < 0 || exitstatus != 0) {
virReportError();
goto cleanup;
}
The only problem with this pattern is that if virCommandRun()
fails (i.e. cmdret < 0), then proper error was already reported.
But in this pattern we overwrite it (usually with less specific)
error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Way back, in v6.2.0-rc1~67 we removed the code that reads slirp's
stderr on failed startup. However, we forgot to remove
corresponding virCommandSetErrorFD() call and variable
declaration. Do that now.
While this may seem like a step in wrong direction (we should be
reading stderr as it may contain reason for failed start), this
is going to be handled in more general way in next commits.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
SUSE installs edk2 firmwares for both x86_64 and aarch64 in /usr/share/qemu.
Add support for this path in virt-aa-helper and allow locking files within
the path in the libvirt qemu abstraction.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The function is used only inside qemu_domain.c, unexport it and move it
above its user.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Originally the code was skipping all repeated taints with the same taint
flag but a logic bug introduced in commit 30626ed15b inverted
the condition. This caused that actually the first occurence was NOT
logged but any subsequent was.
This was noticed when going through oVirt logs as they use custom guest
agent commands and the logs are totally spammed with this message.
Fixes: 30626ed15b
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Outline what the function does, especially the return value.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
The 'can-offline' member is optional according to agent's schema and in
fact in certain cases it's not returned. Libvirt then spams the logs
if something is polling the bulk guest stats API.
Noticed when going through oVirt logs which appears to call the bulk
stats API repeatedly.
Instead of requiring it we simply reply that the vCPU can't be offlined.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
The latest 'lcitool' now generates the CI config in a way which
allows users to kick off pipelines with the upstream projects container
environment rather than building a throwaway updated environment each
time and enables a gitlab feature to time individual script lines.
Pull it into libvirt.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
There are two switch() statements over the same variable inside
of qemuMonitorJSONGetMemoryDeviceInfo(). Join them together into
one switch.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
When processing memory devices (as a reply from QEMU), a bunch of
STREQ()-s is used. Fortunately, the set of strings we process is
the same as virDomainMemoryModel enum. Therefore, we can use
virDomainMemoryModelTypeFromString() and then use integer
comparison (well, switch()). This has an upside: introducing a
new memory model lets us see what places need adjusting
immediately at compile time.
NB, this is in contrast with cmd line generator
(qemuBuildMemoryDeviceProps()), where more specific models are
generated (e.g. "pc-dimm", "virtio-mem-pci", etc.). But QEMU
reports back the parent model, instead of specific child
instance.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
The virDomainMemoryModelTypeFromString() is not exported, though
the enum translation functions are declared in
src/conf/domain_conf.h.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
Note that certain operations will not work.
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/452
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
The 'cirrus-run' and 'check-dco' containers are now exported as
':latest' instead of ':master'.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Let users know that we're working on lifting the limitations
and that they should not use the feature in production until
then.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
This also adds a sentence pointing out that SELinux must be disabled
in order for passt support to work. I didn't think to put that info in
the NEWS file last month when reporting the addition of passt support.
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
When starting QEMU (or when reconnecting to a running one),
qemuMonitorJSONGetMemoryDeviceInfo() is called to refresh info on
memory devices. In here, query-memory-devices is called which
returns info on all memory devices. The result is then iterated
over and for some memory models runtime information is updated.
The rest is to be ignored. Except, when introducing SGX support,
this was turned into an error leaving us unable to start any
domain with virtio-pmem memory device (as virtio-pmem is to be
ignored).
Fixes: ddb1bc0519
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
