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 /* header to be included in non-Xen-specific code */
   9
  10 #ifndef SYSEMU_XEN_H
  11 #define SYSEMU_XEN_H
  12
  13 #include "exec/cpu-common.h"
  14
  15 #ifdef NEED_CPU_H
  16 # ifdef CONFIG_XEN
  17 #  define CONFIG_XEN_IS_POSSIBLE
  18 # endif
  19 #else
  20 # define CONFIG_XEN_IS_POSSIBLE
  21 #endif
  22
  23 #ifdef CONFIG_XEN_IS_POSSIBLE
  24
  25 extern bool xen_allowed;
  26
  27 #define xen_enabled()           (xen_allowed)
  28
  29 #ifndef CONFIG_USER_ONLY
  30 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length);
  31 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  32                    struct MemoryRegion *mr, Error **errp);
  33 #endif
  34
  35 #else /* !CONFIG_XEN_IS_POSSIBLE */
  36
  37 #define xen_enabled() 0
  38 #ifndef CONFIG_USER_ONLY
  39 static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  40 {
  41     /* nothing */
  42 }
  43 static inline void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  44                                  MemoryRegion *mr, Error **errp)
  45 {
  46     g_assert_not_reached();
  47 }
  48 #endif
  49
  50 #endif /* CONFIG_XEN_IS_POSSIBLE */
  51
  52 #endif