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 #ifdef CONFIG_USER_ONLY
  14 #error Cannot include sysemu/xen.h from user emulation
  15 #endif
  16
  17 #include "exec/cpu-common.h"
  18
  19 #ifdef COMPILING_PER_TARGET
  20 # ifdef CONFIG_XEN
  21 #  define CONFIG_XEN_IS_POSSIBLE
  22 # endif
  23 #else
  24 # define CONFIG_XEN_IS_POSSIBLE
  25 #endif /* COMPILING_PER_TARGET */
  26
  27 #ifdef CONFIG_XEN_IS_POSSIBLE
  28
  29 extern bool xen_allowed;
  30
  31 #define xen_enabled()           (xen_allowed)
  32
  33 void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length);
  34 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  35                    struct MemoryRegion *mr, Error **errp);
  36
  37 #else /* !CONFIG_XEN_IS_POSSIBLE */
  38
  39 #define xen_enabled() 0
  40 static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
  41 {
  42     /* nothing */
  43 }
  44 static inline void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
  45                                  MemoryRegion *mr, Error **errp)
  46 {
  47     g_assert_not_reached();
  48 }
  49
  50 #endif /* CONFIG_XEN_IS_POSSIBLE */
  51
  52 bool xen_mr_is_memory(MemoryRegion *mr);
  53 bool xen_mr_is_grants(MemoryRegion *mr);
  54 #endif