In case current kernel does not support /dev/iommu, qemu will probably
fail first because /sys/bus/pci/devices/*/vfio-dev/ is not present,
since QEMU opens it before /dev/iommu.
Instead, report an error directly when completing an iommufd object, to
inform user that kernel does not support it, with a hint about missing
CONFIG_IOMMUFD. We can't do this from initialize as there is no way to
return an error, and we don't want to abort at this step.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-ID: <20260319205942.367705-2-pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
45a0241365