Due to the way the information is stored by the XML parser, we've
had this quirk where specifying any information about the loader
or NVRAM would implicitly set its format to raw. That is,
<nvram>/path/to/guest_VARS.fd</nvram>
would effectively be interpreted as
<nvram format='raw'>/path/to/guest_VARS.fd</nvram>
forcing the use of raw format firmware even when qcow2 format
would normally be preferred based on the ordering of firmware
descriptors. This behavior can be worked around in a number of
ways, but it's fairly unintuitive.
In order to remove this quirk, move the selection of the default
firmware format from the parser down to the individual drivers.
Most drivers only support raw firmware images, so they can
unconditionally set the format early and be done with it; the
QEMU driver, however, supports multiple formats and so in that
case we want this default to be applied as late as possible,
when we have already ruled out the possibility of using qcow2
formatted firmware images.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
These are imported from Fedora 38's edk2 package.
The files that are being replaced date back to RHEL 7 and no
longer represent what libvirt is likely to encounter on an
actual production system.
Notably, the paths have all changed, with both x86_64 and
aarch64 builds now living under /usr/share/edk2 and the AAVMF
name being having been phased out.
Additionally, the 4MB qcow2 format builds have been introduced
on x86_64 and given high priority, effectively making qcow2
the default format across architectures.
The impact of these changes on the test suite is, predictably,
quite severe.
For the cases where paths to firmware files were explicitly
provided as part of the input, they have been adjusted so that
the modern paths are used instead of the legacy ones. Other
than that, input files have been left untouched.
The following expected changes can be seen in output files:
* where qcow2 firmware was used on x86_64, Secure Boot
support is now enabled;
* all ABI_UPDATE test cases for x86_64 now use qcow2
formatted firmware;
* test cases where legacy paths were manually provided
no longer get additional information about the firmware
added to the output XML.
Some of the changes described above highlight why, in order
to guarantee a stable guest ABI over time and regardless of
changes to the host's configuration, it was necessary to move
firmware selection from VM startup time to VM creation time.
In a few cases, updating the firmware descriptors changes the
behavior in a way that's undesired and uncovers latent bugs
in libvirt:
* firmware-manual-efi-secboot-legacy-paths ends up with
Secure Boot disabled, despite the input XML specifically
requesting it to be enabled;
* firmware-manual-efi-rw-modern-paths loses the
loader.readonly=no part of the configuration and starts
using an NVRAM file;
* firmware-manual-efi-nvram-template-nonstandard starts
failing altogether with a fairly obscure error message.
We're going to address all these issues with upcoming changes.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Most of these are just additional coverage, but a few demonstrate
bugs in libvirt:
* firmware-manual-efi-nvram-template-nonstandard sees the NVRAM
template path, which was explicitly provided in the XML,
being overridden by the firmware selection machinery;
* firmware-auto-efi-rw* and firmware-manual-efi-rw-legacy-paths
lose the loader.readonly=no setting and thus behave
differently than requested;
* firmware-manual-efi-loader-path-nonstandard fails because an
NVRAM path doesn't get generated.
We're going to address all these issues with upcoming changes.
Note that the firmware-auto-efi-nvram-template-nonstandard
failure is expected: firmware autoselection has been enabled, but
the NVRAM template points to a custom path that's not mentioned
in any of the firmware descriptors and so it can't succeed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
