The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/xen/features.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
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    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 
   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 }

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