@@ -836,6 +836,10 @@
# @reduced-phys-bits: number of bits in physical addresses that become
# unavailable when SEV is enabled
#
+# @kernel-hashes: if true, add hashes of kernel/initrd/cmdline to a
+# designated guest firmware page for measured boot
+# with -kernel (default: false) (since 6.2)
+#
# @upm-mode: configure Unmapped Private Memory mode
#
# @discard: configure how discarding is handled for memory after
@@ -848,6 +852,7 @@
'data': { '*sev-device': 'str',
'*cbitpos': 'uint32',
'reduced-phys-bits': 'uint32',
+ '*kernel-hashes': 'bool',
'*upm-mode': 'bool',
'*discard': 'str' } }
@@ -864,10 +869,6 @@
#
# @handle: SEV firmware handle (default: 0)
#
-# @kernel-hashes: if true, add hashes of kernel/initrd/cmdline to a
-# designated guest firmware page for measured boot
-# with -kernel (default: false) (since 6.2)
-#
# Since: 2.12
##
{ 'struct': 'SevGuestProperties',
@@ -875,8 +876,7 @@
'data': { '*dh-cert-file': 'str',
'*session-file': 'str',
'*policy': 'uint32',
- '*handle': 'uint32',
- '*kernel-hashes': 'bool' } }
+ '*handle': 'uint32' } }
##
# @SevSnpGuestProperties:
@@ -64,6 +64,7 @@ struct SevCommonState {
char *sev_device;
uint32_t cbitpos;
uint32_t reduced_phys_bits;
+ bool kernel_hashes;
bool upm_mode;
char *discard;
@@ -88,7 +89,6 @@ struct SevGuestState {
uint32_t policy;
char *dh_cert_file;
char *session_file;
- bool kernel_hashes;
};
struct SevSnpGuestState {
@@ -390,6 +390,16 @@ sev_common_set_sev_device(Object *obj, const char *value, Error **errp)
SEV_COMMON(obj)->sev_device = g_strdup(value);
}
+static bool sev_common_get_kernel_hashes(Object *obj, Error **errp)
+{
+ return SEV_COMMON(obj)->kernel_hashes;
+}
+
+static void sev_common_set_kernel_hashes(Object *obj, bool value, Error **errp)
+{
+ SEV_COMMON(obj)->kernel_hashes = value;
+}
+
static bool sev_common_get_upm_mode(Object *obj, Error **errp)
{
return SEV_COMMON(obj)->upm_mode;
@@ -420,6 +430,11 @@ sev_common_class_init(ObjectClass *oc, void *data)
sev_common_set_sev_device);
object_class_property_set_description(oc, "sev-device",
"SEV device to use");
+ object_class_property_add_bool(oc, "kernel-hashes",
+ sev_common_get_kernel_hashes,
+ sev_common_set_kernel_hashes);
+ object_class_property_set_description(oc, "kernel-hashes",
+ "add kernel hashes to guest firmware for measured Linux boot");
object_class_property_add_bool(oc, "upm-mode",
sev_common_get_upm_mode,
sev_common_set_upm_mode);
@@ -484,20 +499,6 @@ sev_guest_set_session_file(Object *obj, const char *value, Error **errp)
SEV_GUEST(obj)->session_file = g_strdup(value);
}
-static bool sev_guest_get_kernel_hashes(Object *obj, Error **errp)
-{
- SevGuestState *sev_guest = SEV_GUEST(obj);
-
- return sev_guest->kernel_hashes;
-}
-
-static void sev_guest_set_kernel_hashes(Object *obj, bool value, Error **errp)
-{
- SevGuestState *sev = SEV_GUEST(obj);
-
- sev->kernel_hashes = value;
-}
-
static void
sev_guest_class_init(ObjectClass *oc, void *data)
{
@@ -511,11 +512,6 @@ sev_guest_class_init(ObjectClass *oc, void *data)
sev_guest_set_session_file);
object_class_property_set_description(oc, "session-file",
"guest owners session parameters (encoded with base64)");
- object_class_property_add_bool(oc, "kernel-hashes",
- sev_guest_get_kernel_hashes,
- sev_guest_set_kernel_hashes);
- object_class_property_set_description(oc, "kernel-hashes",
- "add kernel hashes to guest firmware for measured Linux boot");
}
static void
@@ -2088,16 +2084,12 @@ bool sev_add_kernel_loader_hashes(SevKernelLoaderContext *ctx, Error **errp)
MemTxAttrs attrs = { 0 };
bool ret = true;
SevCommonState *sev_common = SEV_COMMON(MACHINE(qdev_get_machine())->cgs);
- SevGuestState *sev_guest =
- (SevGuestState *)object_dynamic_cast(OBJECT(sev_common),
- TYPE_SEV_GUEST);
/*
* Only add the kernel hashes if the sev-guest configuration explicitly
- * stated kernel-hashes=on. Currently only enabled for SEV/SEV-ES guests,
- * so check for TYPE_SEV_GUEST as well.
+ * stated kernel-hashes=on.
*/
- if (sev_guest && !sev_guest->kernel_hashes) {
+ if (!sev_common->kernel_hashes) {
return false;
}