1 #include <sys/cdefs.h> 2 __FBSDID("$FreeBSD$"); 3 4 #include <sys/param.h> 5 #include <sys/systm.h> 6 7 #include <machine/xen/xen-os.h> 8 #include <xen/hypervisor.h> 9 #include <xen/features.h> 10 11 uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32] /* __read_mostly */; 12 13 void 14 setup_xen_features(void) 15 { 16 xen_feature_info_t fi; 17 int i, j; 18 19 for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) { 20 fi.submap_idx = i; 21 if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) 22 break; 23 for (j = 0; j < 32; j++) 24 xen_features[i*32 + j] = !!(fi.submap & 1<<j); 25 } 26 } 27