Re: [Xen-devel] [PATCH v3 2/6] libxl: do not add a vkb backend to hvm guests

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Jun 10, 2015 at 11:09:50AM +0100, Stefano Stabellini wrote:
> When QEMU restricts its xenstore connection, it cannot provide PV
> backends. A separate QEMU instance is required to provide PV backends in
> userspace, such as qdisk. With two separate instances, it is not
> possible to take advantage of vkb for mouse and keyboard, as the QEMU
> that emulates the graphic card (the device model), would be separate
> from the QEMU running the vkb backend (PV QEMU).
> 

The question is that how would this affect the non-split setup.

But do I understand correctly we are moving towards a split setup
regardlessly whether QEMU supports xsrestrict or not? I.e. there is no
non-split setup in the future.

Wei.

> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> ---
>  tools/libxl/libxl_create.c |    5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
> index f0da7dc..a74b340 100644
> --- a/tools/libxl/libxl_create.c
> +++ b/tools/libxl/libxl_create.c
> @@ -1275,17 +1275,12 @@ static void domcreate_launch_dm(libxl__egc *egc, 
> libxl__multidev *multidev,
>      {
>          libxl__device_console console;
>          libxl__device device;
> -        libxl_device_vkb vkb;
>  
>          init_console_info(gc, &console, 0);
>          console.backend_domid = state->console_domid;
>          libxl__device_console_add(gc, domid, &console, state, &device);
>          libxl__device_console_dispose(&console);
>  
> -        libxl_device_vkb_init(&vkb);
> -        libxl__device_vkb_add(gc, domid, &vkb);
> -        libxl_device_vkb_dispose(&vkb);
> -
>          dcs->dmss.dm.guest_domid = domid;
>          if (libxl_defbool_val(d_config->b_info.device_model_stubdomain))
>              libxl__spawn_stub_dm(egc, &dcs->dmss);
> -- 
> 1.7.10.4

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