[PATCH v2 5/6] qemu: Adapt to virtio-vga-gl device

[Han Han]

On Fri, Jun 11, 2021 at 4:55 PM Michal Prívozník <mprivozn at redhat.com>
wrote:

> On 6/9/21 10:32 AM, Han Han wrote:
> > QEMU 6.1 will replace the virgl property of virtio-vga device to
> > virtio-vga-gl device. Adapt to that update.
> >
> > Resolves: https://gitlab.com/libvirt/libvirt/-/issues/167
> >
> > Signed-off-by: Han Han <hhan at redhat.com>
> > ---
> >  src/qemu/qemu_command.c | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> > index 6b9f13b219..56bc4b87eb 100644
> > --- a/src/qemu/qemu_command.c
> > +++ b/src/qemu/qemu_command.c
> > @@ -4239,6 +4239,9 @@ qemuBuildDeviceVideoStr(const virDomainDef *def,
> >          }
> >      } else {
> >          virBufferAsprintf(&buf, "%s", model);
> > +        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_VGA_GL) &&
> > +            STREQ(model, "virtio-vga"))
> > +            virBufferAddLit(&buf, "-gl");
>
> This enables -gl unconditionally, which is not desired. What we should
> do instead is:
>
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index c5275fe0ee..9f44c76d28 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -4244,6 +4244,7 @@ qemuBuildDeviceVideoStr(const virDomainDef *def,
>      } else {
>          virBufferAsprintf(&buf, "%s", model);
>          if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_VGA_GL) &&
> +            accel3d == VIR_TRISTATE_SWITCH_ON &&
>
Good catch. The condition for accel3d was missing in my code.

>              STREQ(model, "virtio-vga"))
>              virBufferAddLit(&buf, "-gl");
>      }
>
>
> Michal
>
>
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