Re: [PATCH v2 6/7] hw/xen: register legacy backends via xen_backend_init

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

On 10/5/24 12:49, Philippe Mathieu-Daudé wrote:
> From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
>
> It is okay to register legacy backends in the middle of xen_bus_init().
> All that the registration does is record the existence of the backend
> in xenstore.
>
> This makes it possible to remove them from the build without introducing
> undefined symbols in xen_be_init().  It also removes the need for the
> backend_register callback, whose only purpose is to avoid registering
> nonfunctional backends.
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Message-ID: <20240509170044.190795-8-pbonzini@xxxxxxxxxx>
Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>

> Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
> ---
>   include/hw/xen/xen-legacy-backend.h | 11 ++---------
>   include/hw/xen/xen_pvdev.h          |  1 -
>   hw/9pfs/xen-9p-backend.c            |  8 +++++++-
>   hw/display/xenfb.c                  |  8 +++++++-
>   hw/usb/xen-usb.c                    | 14 ++++----------
>   hw/xen/xen-legacy-backend.c         | 16 ----------------
>   6 files changed, 20 insertions(+), 38 deletions(-)