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 #ifdef NEED_CPU_H
  12 # ifdef CONFIG_XEN
  13 #  define CONFIG_XEN_IS_POSSIBLE
  14 # endif
  15 #else
  16 # define CONFIG_XEN_IS_POSSIBLE
  17 #endif
  18
  19 #ifdef CONFIG_XEN_IS_POSSIBLE
  20
  21 extern bool xen_allowed;
  22
  23 #define xen_enabled()           (xen_allowed)
  24
  25 #ifndef CONFIG_USER_ONLY
  26 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length);
  27 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  28                    struct MemoryRegion *mr, Error **errp);
  29 #endif
  30
  31 #else /* !CONFIG_XEN_IS_POSSIBLE */
  32
  33 #define xen_enabled() 0
  34 #ifndef CONFIG_USER_ONLY
  35 static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  36 {
  37     /* nothing */
  38 }
  39 static inline void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  40                                  MemoryRegion *mr, Error **errp)
  41 {
  42     g_assert_not_reached();
  43 }
  44 #endif
  45
  46 #endif /* CONFIG_XEN_IS_POSSIBLE */
  47
  48 #endif