xref: /openbmc/qemu/include/sysemu/xen.h (revision 53c7c924)
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
53