Re: [Xen-devel] [PATCH 7 of 8] Tools: Libxc wrappers to add shared pages to physmap

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Fri, 2011-12-09 at 23:15 +0000, Andres Lagar-Cavilla wrote:
> tools/libxc/xc_memshr.c |  23 +++++++++++++++++++++++
>  tools/libxc/xenctrl.h   |   6 ++++++
>  2 files changed, 29 insertions(+), 0 deletions(-)
> 
> 
> Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
> 
> diff -r 3fc7875c8d98 -r 33935769e257 tools/libxc/xc_memshr.c
> --- a/tools/libxc/xc_memshr.c
> +++ b/tools/libxc/xc_memshr.c
> @@ -86,6 +86,29 @@ int xc_memshr_nominate_gref(xc_interface
>      return ret;
>  }
>  
> +int xc_memshr_add_to_physmap(xc_interface *xch,

Who uses this?

> +                    uint32_t source_domain,
> +                    uint64_t source_gfn,
> +                    uint64_t source_handle,
> +                    uint32_t client_domain,
> +                    uint64_t client_gfn)
> +{
> +    DECLARE_DOMCTL;
> +    struct xen_domctl_mem_sharing_op *op;
> +
> +    domctl.cmd                  = XEN_DOMCTL_mem_sharing_op;
> +    domctl.interface_version    = XEN_DOMCTL_INTERFACE_VERSION;

do_domctl already takes care of this, although this seems to be the
prevalent form in xc_memchr.c.

> +    domctl.domain               = (domid_t) source_domain;
> +    op = &(domctl.u.mem_sharing_op);
> +    op->op = XEN_DOMCTL_MEM_EVENT_OP_SHARING_ADD_PHYSMAP;
> +    op->u.share.source_gfn      = source_gfn;
> +    op->u.share.source_handle   = source_handle;
> +    op->u.share.client_gfn      = client_gfn;
> +    op->u.share.client_domain   = (uint64_t) client_domain;
> +
> +    return do_domctl(xch, &domctl);
> +}
> +
>  int xc_memshr_share(xc_interface *xch,
>                      uint32_t source_domain,
>                      uint64_t source_gfn,
> diff -r 3fc7875c8d98 -r 33935769e257 tools/libxc/xenctrl.h
> --- a/tools/libxc/xenctrl.h
> +++ b/tools/libxc/xenctrl.h
> @@ -1895,6 +1895,12 @@ int xc_memshr_nominate_gref(xc_interface
>                              uint32_t domid,
>                              grant_ref_t gref,
>                              uint64_t *handle);
> +int xc_memshr_add_to_physmap(xc_interface *xch,
> +                    uint32_t source_domain,
> +                    uint64_t source_gfn,
> +                    uint64_t source_handle,
> +                    uint32_t client_domain,
> +                    uint64_t client_gfn);
>  int xc_memshr_share(xc_interface *xch,
>                      uint32_t source_domain,
>                      uint64_t source_gfn,



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