Re: [XEN PATCH][for-4.19 v3] xen: address violations of Rule 11.9

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 18 Oct 2023, Nicola Vetrini wrote:
> The constant 0 is used instead of NULL in '__ACCESS_ONCE' as a
> compile-time check to detect non-scalar types; its usage for this
> purpose is deviated.
> 
> Furthermore, the 'typeof_field' macro is introduced as a general way
> to access the type of a struct member without declaring a variable
> of struct type. Both this macro and 'sizeof_field' are moved to
> 'xen/macros.h'.
> 
> No functional change intended.
> 
> Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>

Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>