Guo Zhi 6985d8ede9 vga: avoid crash if no default vga card ...

QEMU in some arch will crash when executing -vga help command, because
there is no default vga model.  Add check to this case and avoid crash.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/978

Signed-off-by: Guo Zhi <qtxuning1999@sjtu.edu.cn>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20220503091724.970009-1-qtxuning1999@sjtu.edu.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

2022-06-28 10:43:05 +02:00

..

arch_init.c

…

balloon.c

…

bootdevice.c

machine: use QAPI struct for boot configuration

2022-05-12 12:29:43 +02:00

cpu-throttle.c

Remove qemu-common.h include from most units

2022-04-06 14:31:55 +02:00

cpu-timers.c

Remove qemu-common.h include from most units

2022-04-06 14:31:55 +02:00

cpus.c

whpx: Added support for breakpoints and stepping

2022-04-06 14:31:55 +02:00

datadir.c

Remove qemu-common.h include from most units

2022-04-06 14:31:55 +02:00

device_tree.c

…

dma-helpers.c

…

globals.c

ui: Switch "-display sdl" to use the QAPI parser

2022-06-03 08:03:28 +02:00

icount.c

replay: rewrite async event handling

2022-06-06 09:26:53 +02:00

ioport.c

…

main.c

Simplify softmmu/main.c

2022-04-21 16:56:55 +04:00

memory_mapping.c

…

memory.c

Replace TARGET_WORDS_BIGENDIAN

2022-04-06 10:50:37 +02:00

meson.build

…

physmem.c

softmmu: Always initialize xlat in address_space_translate_for_iotlb

2022-06-21 09:26:16 -07:00

qdev-monitor.c

qdev: unplug blocker for devices

2022-06-15 14:50:41 +01:00

qemu-seccomp.c

…

qtest.c

Replace TARGET_WORDS_BIGENDIAN

2022-04-06 10:50:37 +02:00

rtc.c

…

runstate-action.c

…

runstate.c

Remove qemu-common.h include from most units

2022-04-06 14:31:55 +02:00

timers-state.h

…

tpm.c

…

trace-events

…

trace.h

…

vl.c

vga: avoid crash if no default vga card

2022-06-28 10:43:05 +02:00