diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-09-06 20:14:15 +0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-02 18:47:55 +0200 |
| commit | 3829640049cf516d229620e5919b0ab66fd6ac86 (patch) | |
| tree | ef5eb722c0fe8fd4ece5bf28bf0065374f98cdde /backends | |
| parent | 7184de64a1cf23a72191484b9a6995c3bfc9fb0b (diff) | |
hostmem-memfd: add checks before adding hostmem-memfd & properties
Run some memfd-related checks before registering hostmem-memfd &
various properties. This will help libvirt to figure out what the host
is supposed to be capable of.
qemu_memfd_check() is changed to a less optimized version, since it is
used with various flags, it no longer caches the result.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180906161415.8543-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/hostmem-memfd.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c index 1e20fe0ba8..3800bd07b6 100644 --- a/backends/hostmem-memfd.c +++ b/backends/hostmem-memfd.c @@ -140,18 +140,22 @@ 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_add(oc, "hugetlbsize", "int", + memfd_backend_get_hugetlbsize, + memfd_backend_set_hugetlbsize, + NULL, NULL, &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); + } } static const TypeInfo memfd_backend_info = { @@ -164,7 +168,9 @@ 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); |