QEMU aborts when specifying additional isa-vga devices

QEMU aborts when the user specifies additional isa-vga devices for certain machines on the command line. For example::

$ ./qemu-system-mips64el -M pica61 -device isa-vga
RAMBlock "vga.vram" already registered, abort!
Aborted (core dumped)

QEMU should never abort due to things that the user specified on the command line, so there should only be a proper error message + exit here instead.

Edited Apr 23, 2021 by Thomas Huth

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information