> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-boun...@lists.xen.org] On Behalf Of
> Juergen Gross
> Sent: 06 September 2017 13:47
> To: xen-devel@lists.xen.org
> Cc: Juergen Gross <jgr...@suse.com>; sstabell...@kernel.org; Wei Liu
> <wei.l...@citrix.com>; George Dunlap <george.dun...@citrix.com>;
> Andrew Cooper <andrew.coop...@citrix.com>; Ian Jackson
> <ian.jack...@citrix.com>; Tim (Xen.org) <t...@xen.org>;
> julien.gr...@arm.com; jbeul...@suse.com
> Subject: [Xen-devel] [PATCH v3 7/8] libxc: add libxc support for setting grant
> table resource limits
>
> Add a new libxc function xc_domain_set_gnttbl_limits() setting the
> limits for the maximum numbers of grant table frames and maptrack
> frames of a domain.
>
> Signed-off-by: Juergen Gross <jgr...@suse.com>
Reviewed-by: Paul Durrant <paul.durr...@citrix.com>
> ---
> tools/libxc/include/xenctrl.h | 14 ++++++++++++++
> tools/libxc/xc_domain.c | 13 +++++++++++++
> 2 files changed, 27 insertions(+)
>
> diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
> index 43151cb415..39b58cf5b7 100644
> --- a/tools/libxc/include/xenctrl.h
> +++ b/tools/libxc/include/xenctrl.h
> @@ -1064,6 +1064,20 @@ int xc_domain_set_virq_handler(xc_interface
> *xch, uint32_t domid, int virq);
> int xc_domain_set_max_evtchn(xc_interface *xch, uint32_t domid,
> uint32_t max_port);
>
> +/**
> + * Set the maximum number of grant frames and/or maptrack frames a
> domain
> + * can have. Can only be used at domain setup time. A zero value means
> + * no change.
> + *
> + * @param xch a handle to an open hypervisor interface
> + * @param domid the domain id
> + * @param grant_frames max. number of grant frames
> + * @param maptrack_frames max. number of maptrack frames
> + */
> +int xc_domain_set_gnttab_limits(xc_interface *xch, uint32_t domid,
> + uint32_t grant_frames,
> + uint32_t maptrack_frames);
> +
> /*
> * CPUPOOL MANAGEMENT FUNCTIONS
> */
> diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c
> index 3bab4e8bab..e59665ff6e 100644
> --- a/tools/libxc/xc_domain.c
> +++ b/tools/libxc/xc_domain.c
> @@ -2268,6 +2268,19 @@ int xc_domain_set_max_evtchn(xc_interface
> *xch, uint32_t domid,
> return do_domctl(xch, &domctl);
> }
>
> +int xc_domain_set_gnttab_limits(xc_interface *xch, uint32_t domid,
> + uint32_t grant_frames,
> + uint32_t maptrack_frames)
> +{
> + DECLARE_DOMCTL;
> +
> + domctl.cmd = XEN_DOMCTL_set_gnttab_limits;
> + domctl.domain = domid;
> + domctl.u.set_gnttab_limits.grant_frames = grant_frames;
> + domctl.u.set_gnttab_limits.maptrack_frames = maptrack_frames;
> + return do_domctl(xch, &domctl);
> +}
> +
> /* Plumbing Xen with vNUMA topology */
> int xc_domain_setvnuma(xc_interface *xch,
> uint32_t domid,
> --
> 2.12.3
>
>
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