Re: [PATCH 0/2] kbuild, uapi: Mark inner unions in packed structs as packed

[Greg Kroah-Hartman]

On Thu, Jan 15, 2026 at 08:35:43AM +0100, Thomas Weißschuh wrote:
> The unpacked unions within a packed struct generates alignment warnings
> on clang for 32-bit ARM.
> 
> With the recent changes to compile-test the UAPI headers in more cases,
> these warning in combination with CONFIG_WERROR breaks the build.
> 
> Fix the warnings.
> 
> Intended for the kbuild tree.
> 
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
> ---
> Thomas Weißschuh (2):
>       hyper-v: Mark inner union in hv_kvp_exchg_msg_value as packed
>       virt: vbox: uapi: Mark inner unions in packed structs as packed
> 
>  include/uapi/linux/hyperv.h            | 2 +-
>  include/uapi/linux/vbox_vmmdev_types.h | 4 ++--
>  2 files changed, 3 insertions(+), 3 deletions(-)
> ---
> base-commit: e3970d77ec504e54c3f91a48b2125775c16ba4c0
> change-id: 20260115-kbuild-alignment-vbox-d0409134d335
> 
> Best regards,
> -- 
> Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
> 

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>