return xen_gnttab_ops->unmap(xgt, start_address, refs, count);
}
+struct foreignmem_backend_ops {
+ void *(*map)(uint32_t dom, void *addr, int prot, size_t pages,
+ xen_pfn_t *pfns, int *errs);
+ int (*unmap)(void *addr, size_t pages);
+};
+
+extern struct foreignmem_backend_ops *xen_foreignmem_ops;
+
+static inline void *qemu_xen_foreignmem_map(uint32_t dom, void *addr, int prot,
+ size_t pages, xen_pfn_t *pfns,
+ int *errs)
+{
+ if (!xen_foreignmem_ops) {
+ return NULL;
+ }
+ return xen_foreignmem_ops->map(dom, addr, prot, pages, pfns, errs);
+}
+
+static inline int qemu_xen_foreignmem_unmap(void *addr, size_t pages)
+{
+ if (!xen_foreignmem_ops) {
+ return -ENOSYS;
+ }
+ return xen_foreignmem_ops->unmap(addr, pages);
+}
+
void setup_xen_backend_ops(void);
#endif /* QEMU_XEN_BACKEND_OPS_H */