1181779Skmacy#include <sys/cdefs.h> 2181779Skmacy__FBSDID("$FreeBSD$"); 3181779Skmacy 4189699Sdfr#include <sys/param.h> 5189699Sdfr#include <sys/systm.h> 6189699Sdfr 7255040Sgibbs#include <xen/xen-os.h> 8186557Skmacy#include <xen/hypervisor.h> 9189699Sdfr#include <xen/features.h> 10181779Skmacy 11181779Skmacyuint8_t xen_features[XENFEAT_NR_SUBMAPS * 32] /* __read_mostly */; 12181779Skmacy 13181779Skmacyvoid 14181779Skmacysetup_xen_features(void) 15181779Skmacy{ 16181779Skmacy xen_feature_info_t fi; 17181779Skmacy int i, j; 18181779Skmacy 19181779Skmacy for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) { 20181779Skmacy fi.submap_idx = i; 21181779Skmacy if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) 22181779Skmacy break; 23181779Skmacy for (j = 0; j < 32; j++) 24181779Skmacy xen_features[i*32 + j] = !!(fi.submap & 1<<j); 25181779Skmacy } 26181779Skmacy} 27