[0/2] Improve module accelerator error message

Message

Jose R. Ziviani July 20, 2021, 10:31 p.m. UTC

The main objective here is to fix an user issue when trying to load TCG
that was built as module, but it's not installed or found in the library
path.

For example:

$ ./qemu-system-x86_64 -machine q35 -accel tcg -kernel /boot/vmlinuz
...
ERROR:../accel/accel-softmmu.c:82:accel_init_ops_interfaces: assertion failed: (ops != NULL)
Bail out! ERROR:../accel/accel-softmmu.c:82:accel_init_ops_interfaces: assertion failed: (ops != NULL)
[1]    31964 IOT instruction (core dumped)  ./qemu-system-x86_64 ...

The new error message becomes:

$ ./qemu-system-x86_64 -machine q35 -accel tcg -kernel /boot/vmlinuz
accel-tcg-x86_64 module is missing, install the package or config the library path correctly.

Jose R. Ziviani (2):
  modules: Implement new helper functions
  qom: Improve error message in module_object_class_by_name()

 accel/accel-softmmu.c |  5 +++-
 include/qemu/module.h |  4 +++
 qom/object.c          |  9 +++++++
 util/module.c         | 57 +++++++++++++++++++++++++++++++++++++------
 4 files changed, 67 insertions(+), 8 deletions(-)