include/xen/xen.h

   1 #ifndef _XEN_XEN_H
   2 #define _XEN_XEN_H
   3
   4 enum xen_domain_type {
   5         XEN_NATIVE,             /* running on bare hardware    */
   6         XEN_PV_DOMAIN,          /* running in a PV domain      */
   7         XEN_HVM_DOMAIN,         /* running in a Xen hvm domain */
   8 };
   9
  10 #ifdef CONFIG_XEN
  11 extern enum xen_domain_type xen_domain_type;
  12 #else
  13 #define xen_domain_type         XEN_NATIVE
  14 #endif
  15
  16 #define xen_domain()            (xen_domain_type != XEN_NATIVE)
  17 #define xen_pv_domain()         (xen_domain() &&                        \
  18                                  xen_domain_type == XEN_PV_DOMAIN)
  19 #define xen_hvm_domain()        (xen_domain() &&                        \
  20                                  xen_domain_type == XEN_HVM_DOMAIN)
  21
  22 #ifdef CONFIG_XEN_DOM0
  23 #include <xen/interface/xen.h>
  24 #include <asm/xen/hypervisor.h>
  25
  26 #define xen_initial_domain()    (xen_domain() && \
  27                                  xen_start_info && xen_start_info->flags & SIF_INITDOMAIN)
  28 #else  /* !CONFIG_XEN_DOM0 */
  29 #define xen_initial_domain()    (0)
  30 #endif  /* CONFIG_XEN_DOM0 */
  31
  32 #ifdef CONFIG_XEN_PVH
  33 /* This functionality exists only for x86. The XEN_PVHVM support exists
  34  * only in x86 world - hence on ARM it will be always disabled.
  35  * N.B. ARM guests are neither PV nor HVM nor PVHVM.
  36  * It's a bit like PVH but is different also (it's further towards the H
  37  * end of the spectrum than even PVH).
  38  */
  39 #include <xen/features.h>
  40 #define xen_pvh_domain() (xen_pv_domain() && \
  41                           xen_feature(XENFEAT_auto_translated_physmap) && \
  42                           xen_have_vector_callback)
  43 #else
  44 #define xen_pvh_domain()        (0)
  45 #endif
  46 #endif  /* _XEN_XEN_H */