Re: [PATCH 2/3] Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}

[Jürgen Groß <jgross@xxxxxxxx>]

On 10.03.21 11:45, Jan Beulich wrote:
> It's not helpful if every driver has to cook its own. Generalize
> xenbus'es INVALID_GRANT_HANDLE and pcifront's INVALID_GRANT_REF (which
> shouldn't have expanded to zero to begin with). Use the constants in
> p2m.c and gntdev.c right away, and update field types where necessary so
> they would match with the constants' types (albeit without touching
> struct ioctl_gntdev_grant_ref's ref field, as that's part of the public
> interface of the kernel and would require introducing a dependency on
> Xen's grant_table.h public header).
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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