Logo Search packages:      
Sourcecode: linux version File versions  Download package

features.c

/******************************************************************************
 * features.c
 *
 * Xen feature flags.
 *
 * Copyright (c) 2006, Ian Campbell, XenSource Inc.
 */
#include <linux/types.h>
#include <linux/cache.h>
#include <linux/module.h>
#include <asm/xen/hypervisor.h>
#include <xen/features.h>

u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly;
EXPORT_SYMBOL_GPL(xen_features);

void xen_setup_features(void)
{
      struct xen_feature_info fi;
      int i, j;

      for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
            fi.submap_idx = i;
            if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
                  break;
            for (j = 0; j < 32; j++)
                  xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
      }
}

Generated by  Doxygen 1.6.0   Back to index