2  * QEMU host POSIX shared memory object backend
17 #define TYPE_MEMORY_BACKEND_SHM "memory-backend-shm"
26 shm_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)  in shm_backend_memory_alloc()  argument
34     if (!backend->size) {  in shm_backend_memory_alloc()
35         error_setg(errp, "can't create shm backend with size 0");  in shm_backend_memory_alloc()
39     if (!backend->share) {  in shm_backend_memory_alloc()
40         error_setg(errp, "can't create shm backend with `share=off`");  in shm_backend_memory_alloc()
50     backend_name = host_memory_backend_get_name(backend);  in shm_backend_memory_alloc()
78     if (ftruncate(fd, backend->size) == -1) {  in shm_backend_memory_alloc()
81                          backend->size);  in shm_backend_memory_alloc()
87     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;  in shm_backend_memory_alloc()
89     return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend),  in shm_backend_memory_alloc()
90                                               backend_name, backend->size,  in shm_backend_memory_alloc()