1 #include <sys/cdefs.h> 2 #include <sys/param.h> 3 #include <sys/systm.h> 4 5 #include <xen/xen-os.h> 6 #include <xen/hypervisor.h> 7 #include <xen/features.h> 8 9 uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32] /* __read_mostly */; 10 11 void 12 setup_xen_features(void) 13 { 14 xen_feature_info_t fi; 15 int i, j; 16 17 for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) { 18 fi.submap_idx = i; 19 if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) 20 break; 21 for (j = 0; j < 32; j++) 22 xen_features[i*32 + j] = !!(fi.submap & 1<<j); 23 } 24 } 25