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Diffstat (limited to 'backends/hostmem-memfd.c')
-rw-r--r--backends/hostmem-memfd.c41
1 files changed, 28 insertions, 13 deletions
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c
index 1e20fe0ba8..b6836b28e5 100644
--- a/backends/hostmem-memfd.c
+++ b/backends/hostmem-memfd.c
@@ -140,18 +140,31 @@ memfd_backend_class_init(ObjectClass *oc, void *data)
bc->alloc = memfd_backend_memory_alloc;
- object_class_property_add_bool(oc, "hugetlb",
- memfd_backend_get_hugetlb,
- memfd_backend_set_hugetlb,
- &error_abort);
- object_class_property_add(oc, "hugetlbsize", "int",
- memfd_backend_get_hugetlbsize,
- memfd_backend_set_hugetlbsize,
- NULL, NULL, &error_abort);
- object_class_property_add_bool(oc, "seal",
- memfd_backend_get_seal,
- memfd_backend_set_seal,
- &error_abort);
+ 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 const TypeInfo memfd_backend_info = {
@@ -164,7 +177,9 @@ static const TypeInfo memfd_backend_info = {
static void register_types(void)
{
- type_register_static(&memfd_backend_info);
+ if (qemu_memfd_check(0)) {
+ type_register_static(&memfd_backend_info);
+ }
}
type_init(register_types);