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 55