static void
memfd_backend_class_init(ObjectClass *oc, void *data)
{
HostMemoryBackendClass *bc = MEMORY_BACKEND_CLASS(oc);
bc->alloc = memfd_backend_memory_alloc;
if (qemu_memfd_check(MFD_HUGETLB)) {
object_class_property_add_bool(oc, "hugetlb",
memfd_backend_get_hugetlb,
memfd_backend_set_hugetlb,
&error_abort);
object_class_property_set_description(oc, "hugetlb",
"Use huge pages",
&error_abort);
object_class_property_add(oc, "hugetlbsize", "int",
memfd_backend_get_hugetlbsize,
memfd_backend_set_hugetlbsize,
NULL, NULL, &error_abort);
object_class_property_set_description(oc, "hugetlbsize",
"Huge pages size (ex: 2M, 1G)",
&error_abort);
}
if (qemu_memfd_check(MFD_ALLOW_SEALING)) {
object_class_property_add_bool(oc, "seal",
memfd_backend_get_seal,
memfd_backend_set_seal,
&error_abort);
object_class_property_set_description(oc, "seal",
"Seal growing & shrinking",
&error_abort);
}
}
static void append_mem_opts(TestServer *server, GString *cmd_line,
int size, enum test_memfd memfd)
{
if (memfd == TEST_MEMFD_AUTO) {
memfd = qemu_memfd_check(MFD_ALLOW_SEALING) ? TEST_MEMFD_YES
: TEST_MEMFD_NO;
}
if (memfd == TEST_MEMFD_YES) {
g_string_append_printf(cmd_line, QEMU_CMD_MEMFD, size, size);
} else {
const char *root = init_hugepagefs() ? : server->tmpfs;
g_string_append_printf(cmd_line, QEMU_CMD_MEM, size, size, root);
}
}
static char *get_qemu_cmd(TestServer *s,
int mem, enum test_memfd memfd, const char *mem_path,
const char *chr_opts, const char *extra)
{
if (memfd == TEST_MEMFD_AUTO && qemu_memfd_check(0)) {
memfd = TEST_MEMFD_YES;
}
if (memfd == TEST_MEMFD_YES) {
return g_strdup_printf(QEMU_CMD_MEMFD QEMU_CMD_CHR
QEMU_CMD_NETDEV QEMU_CMD_NET "%s", mem, mem,
s->chr_name, s->socket_path,
chr_opts, s->chr_name, extra);
} else {
return g_strdup_printf(QEMU_CMD_MEM QEMU_CMD_CHR
QEMU_CMD_NETDEV QEMU_CMD_NET "%s", mem, mem,
mem_path, s->chr_name, s->socket_path,
chr_opts, s->chr_name, extra);
}
}
static void register_types(void)
{
if (qemu_memfd_check(0)) {
type_register_static(&memfd_backend_info);
}
}
