1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD$");
3
4#include <sys/param.h>
5#include <sys/systm.h>
6
7#include <xen/xen-os.h>
8#include <xen/hypervisor.h>
9#include <xen/features.h>
10
11uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32] /* __read_mostly */;
12
13void
14setup_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