Re: [Xen-devel] [RFC PATCH 11/16] xen/grant-table: make grant-table xenhost aware

[Juergen Gross <jgross@xxxxxxxx>]

On 09.05.19 19:25, Ankur Arora wrote:
> Largely mechanical changes: the exported grant table symbols now take
> xenhost_t * as a parameter. Also, move the grant table global state
> inside xenhost_t.
>
> If there's more than one xenhost, then initialize both.
>
> Signed-off-by: Ankur Arora <ankur.a.arora@xxxxxxxxxx>
> ---
>   arch/x86/xen/grant-table.c |  71 +++--
>   drivers/xen/grant-table.c  | 611 +++++++++++++++++++++----------------
>   include/xen/grant_table.h  |  72 ++---
>   include/xen/xenhost.h      |  11 +
>   4 files changed, 443 insertions(+), 322 deletions(-)
>
> diff --git a/include/xen/xenhost.h b/include/xen/xenhost.h
> index 9e08627a9e3e..acee0c7872b6 100644
> --- a/include/xen/xenhost.h
> +++ b/include/xen/xenhost.h
> @@ -129,6 +129,17 @@ typedef struct {
>                 const struct evtchn_ops *evtchn_ops;
>                 int **evtchn_to_irq;
>         };
> +
> +       /* grant table private state */
> +       struct {
> +               /* private to drivers/xen/grant-table.c */
> +               void *gnttab_private;
> +
> +               /* x86/xen/grant-table.c */
> +               void *gnttab_shared_vm_area;
> +               void *gnttab_status_vm_area;
> +               void *auto_xlat_grant_frames;
Please use proper types here instead of void *. This avoids lots of
casts. It is okay to just add anonymous struct definitions and keep the
real struct layout local to grant table code.


Juergen

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