Re: [PATCH 1/2] tools/libxc: add interface for GNTTABOP_query_size

[Wei Liu <wei.liu2@citrix.com>]

On Fri, Jun 30, 2017 at 03:21:30PM +0800, Dongli Zhang wrote:
> This patch adds new interface for GNTTABOP_query_size in libxc to help
> query the current grant table frames and maximum grant table frames for a
> specific domain.
> 
> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
> ---
>  tools/libxc/include/xenctrl.h |  1 +
>  tools/libxc/xc_gnttab.c       | 12 ++++++++++++
>  2 files changed, 13 insertions(+)
> 
> diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
> index 1629f41..155c69e 100644
> --- a/tools/libxc/include/xenctrl.h
> +++ b/tools/libxc/include/xenctrl.h
> @@ -1597,6 +1597,7 @@ int xc_gnttab_op(xc_interface *xch, int cmd,
>                   void * op, int op_size, int count);
>  /* Logs iff hypercall bounce fails, otherwise doesn't. */
>  
> +int xc_gnttab_query_size(xc_interface *xch, struct gnttab_query_size *query);
>  int xc_gnttab_get_version(xc_interface *xch, int domid); /* Never logs */
>  grant_entry_v1_t *xc_gnttab_map_table_v1(xc_interface *xch, int domid, int *gnt_num);
>  grant_entry_v2_t *xc_gnttab_map_table_v2(xc_interface *xch, int domid, int *gnt_num);
> diff --git a/tools/libxc/xc_gnttab.c b/tools/libxc/xc_gnttab.c
> index af53fac..81a89fe 100644
> --- a/tools/libxc/xc_gnttab.c
> +++ b/tools/libxc/xc_gnttab.c
> @@ -38,6 +38,18 @@ int xc_gnttab_op(xc_interface *xch, int cmd, void * op, int op_size, int count)
>      return ret;
>  }
>  
> +int xc_gnttab_query_size(xc_interface *xch, struct gnttab_query_size *query)
> +{
> +    int rc;
> +
> +    rc = xc_gnttab_op(xch, GNTTABOP_query_size, query, sizeof(*query), 1);
> +
> +    if ( rc || (query->status != GNTST_okay) )
> +        ERROR("Could not query dom %d's grant size\n", query->dom);

%u please.

Otherwise:

Acked-by: Wei Liu <wei.liu2@citrix.com>

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