xref: /openbmc/qemu/include/sysemu/xen.h (revision 1935b7ea)
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 #endif
53