Re: [Qemu-devel] [PATCH] vga: print friendly error message in case multiple vga devices are added

[Eric Blake]

On 05/07/2018 05:10 AM, Gerd Hoffmann wrote:
> ... to a virtual machine.  Without that we fail a ramblock register
> sanity check, leading to a abort(), which isn't exactly user friendly.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1206037
> Signed-off-by: Gerd Hoffmann <address@hidden>
> ---
>   hw/display/vga.c | 8 ++++++++
>   1 file changed, 8 insertions(+)

>   
> +    if (global_vmstate) {
> +        static int have_vga;

It looks funny to declare this as int,

> +        if (have_vga) {
> +            error_report("only one vga device is supported");
> +            exit(1);
> +        }
> +        have_vga = true;

but to treat it as bool.  Why not just declare it as bool to begin with?

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org