include/sysemu/xen.h

   1 /*
   2  * QEMU Xen support
   3  *
   4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #ifndef SYSEMU_XEN_H
   9 #define SYSEMU_XEN_H
  10
  11 #include "exec/cpu-common.h"
  12
  13 #ifdef NEED_CPU_H
  14 # ifdef CONFIG_XEN
  15 #  define CONFIG_XEN_IS_POSSIBLE
  16 # endif
  17 #else
  18 # define CONFIG_XEN_IS_POSSIBLE
  19 #endif
  20
  21 #ifdef CONFIG_XEN_IS_POSSIBLE
  22
  23 extern bool xen_allowed;
  24
  25 #define xen_enabled()           (xen_allowed)
  26
  27 #ifndef CONFIG_USER_ONLY
  28 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length);
  29 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  30                    struct MemoryRegion *mr, Error **errp);
  31 #endif
  32
  33 #else /* !CONFIG_XEN_IS_POSSIBLE */
  34
  35 #define xen_enabled() 0
  36 #ifndef CONFIG_USER_ONLY
  37 static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  38 {
  39     /* nothing */
  40 }
  41 static inline void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  42                                  MemoryRegion *mr, Error **errp)
  43 {
  44     g_assert_not_reached();
  45 }
  46 #endif
  47
  48 #endif /* CONFIG_XEN_IS_POSSIBLE */
  49
  50 #endif