qemu/backends/hostmem-memfd.c

7  *   Marc-André Lureau <marcandre.lureau@redhat.com>
10  * See the COPYING file in the top-level directory.
28     bool hugetlb;
30     bool seal;
33 static bool
41     if (!backend->size) {  in memfd_backend_memory_alloc()
50     fd = qemu_memfd_create(TYPE_MEMORY_BACKEND_MEMFD, backend->size,  in memfd_backend_memory_alloc()
51                            m->hugetlb, m->hugetlbsize, m->seal ?  in memfd_backend_memory_alloc()
54     if (fd == -1) {  in memfd_backend_memory_alloc()
60     backend->aligned = true;  in memfd_backend_memory_alloc()
61     ram_flags = backend->share ? RAM_SHARED : RAM_PRIVATE;  in memfd_backend_memory_alloc()
62     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;  in memfd_backend_memory_alloc()
63     ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD : 0;  in memfd_backend_memory_alloc()
64     return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name,  in memfd_backend_memory_alloc()
65                                           backend->size, ram_flags, fd, 0, errp);  in memfd_backend_memory_alloc()
68 static bool
71     return MEMORY_BACKEND_MEMFD(o)->hugetlb;  in memfd_backend_get_hugetlb()
75 memfd_backend_set_hugetlb(Object *o, bool value, Error **errp)  in memfd_backend_set_hugetlb()
77     MEMORY_BACKEND_MEMFD(o)->hugetlb = value;  in memfd_backend_set_hugetlb()
88         error_setg(errp, "cannot change property value");  in memfd_backend_set_hugetlbsize()
96         error_setg(errp, "Property '%s.%s' doesn't take value '%" PRIu64 "'",  in memfd_backend_set_hugetlbsize()
100     m->hugetlbsize = value;  in memfd_backend_set_hugetlbsize()
108     uint64_t value = m->hugetlbsize;  in memfd_backend_get_hugetlbsize()
113 static bool
116     return MEMORY_BACKEND_MEMFD(o)->seal;  in memfd_backend_get_seal()
120 memfd_backend_set_seal(Object *o, bool value, Error **errp)  in memfd_backend_set_seal()
122     MEMORY_BACKEND_MEMFD(o)->seal = value;  in memfd_backend_set_seal()
131     m->seal = true;  in memfd_backend_instance_init()
132     MEMORY_BACKEND(m)->share = true;  in memfd_backend_instance_init()
140     bc->alloc = memfd_backend_memory_alloc;  in memfd_backend_class_init()