xen: allow for explicitly specifying node-affinity

Make it possible to pass the node-affinity of a domain to the hypervisor
from the upper layers, instead of always being computed automatically.

Note that this also required generalizing the Flask hooks for setting
and getting the affinity, so that they now deal with both vcpu and
node affinity.

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Juergen Gross <juergen.gross@ts.fujitsu.com>
Acked-by: Keir Fraser <keir@xen.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 9f5ed48a0e..4c5b2bbbbd 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -280,6 +280,16 @@ typedef struct xen_domctl_getvcpuinfo xen_domctl_getvcpuinfo_t;
 DEFINE_XEN_GUEST_HANDLE(xen_domctl_getvcpuinfo_t);
 
 
+/* Get/set the NUMA node(s) with which the guest has affinity with. */
+/* XEN_DOMCTL_setnodeaffinity */
+/* XEN_DOMCTL_getnodeaffinity */
+struct xen_domctl_nodeaffinity {
+    struct xenctl_bitmap nodemap;/* IN */
+};
+typedef struct xen_domctl_nodeaffinity xen_domctl_nodeaffinity_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domctl_nodeaffinity_t);
+
+
 /* Get/set which physical cpus a vcpu can execute on. */
 /* XEN_DOMCTL_setvcpuaffinity */
 /* XEN_DOMCTL_getvcpuaffinity */
@@ -908,6 +918,8 @@ struct xen_domctl {
 #define XEN_DOMCTL_audit_p2m                     65
 #define XEN_DOMCTL_set_virq_handler              66
 #define XEN_DOMCTL_set_broken_page_p2m           67
+#define XEN_DOMCTL_setnodeaffinity               68
+#define XEN_DOMCTL_getnodeaffinity               69
 #define XEN_DOMCTL_gdbsx_guestmemio            1000
 #define XEN_DOMCTL_gdbsx_pausevcpu             1001
 #define XEN_DOMCTL_gdbsx_unpausevcpu           1002
@@ -921,6 +933,7 @@ struct xen_domctl {
         struct xen_domctl_getpageframeinfo  getpageframeinfo;
         struct xen_domctl_getpageframeinfo2 getpageframeinfo2;
         struct xen_domctl_getpageframeinfo3 getpageframeinfo3;
+        struct xen_domctl_nodeaffinity      nodeaffinity;
         struct xen_domctl_vcpuaffinity      vcpuaffinity;
         struct xen_domctl_shadow_op         shadow_op;
         struct xen_domctl_max_mem           max_mem;