[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 1/2] tools/libxc: add interface for GNTTABOP_query_size
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@xxxxxxxxxx> --- Changed since v1: * Change %d to %u in ERROR() --- 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..9e6f1fb 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 %u's grant size\n", query->dom); + + return rc; +} + int xc_gnttab_get_version(xc_interface *xch, int domid) { struct gnttab_get_version query; -- 2.7.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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