If users try to add an isa-vga device that was already registered, still in command line, qemu will crash:
$ qemu-system-mips64el -M pica61 -device isa-vga RAMBlock "vga.vram" already registered, abort! Aborted (core dumped) That particular board registers such device automaticaly, so it's not obvious that a VGA device already exists. This patch changes this behavior by displaying a message and ignoring that device, starting qemu normally. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/44 Signed-off-by: Jose R. Ziviani <jzivi...@suse.de> --- hw/display/vga-isa.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c index 90851e730b..69db502dde 100644 --- a/hw/display/vga-isa.c +++ b/hw/display/vga-isa.c @@ -61,6 +61,15 @@ static void vga_isa_realizefn(DeviceState *dev, Error **errp) MemoryRegion *vga_io_memory; const MemoryRegionPortio *vga_ports, *vbe_ports; + /* + * some machines register VGA by default, so instead of aborting + * it, show a message and ignore this device. + */ + if (qemu_ram_block_by_name("vga.vram")) { + error_report("vga.vram is already registered, ignoring this device"); + return; + } + s->global_vmstate = true; vga_common_init(s, OBJECT(dev)); s->legacy_address_space = isa_address_space(isadev); -- 2.32.0
