Introduce tdx-guest object which implements the interface of
CONFIDENTIAL_GUEST_SUPPORT, and will be used to create TDX VMs (TDs) by
qemu -machine ...,confidential-guest-support=tdx0 \
-object tdx-guset,id=tdx0
It has only one property 'attributes' with fixed value 0 and not
configurable so far.
Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
Acked-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
changes from RFC-V4
- make @attributes not user-settable
---
configs/devices/i386-softmmu/default.mak | 1 +
hw/i386/Kconfig | 5 +++
qapi/qom.json | 12 +++++++
target/i386/kvm/meson.build | 2 ++
target/i386/kvm/tdx.c | 40 ++++++++++++++++++++++++
target/i386/kvm/tdx.h | 19 +++++++++++
6 files changed, 79 insertions(+)
create mode 100644 target/i386/kvm/tdx.c
create mode 100644 target/i386/kvm/tdx.h
diff --git a/configs/devices/i386-softmmu/default.mak b/configs/devices/i386-softmmu/default.mak
index 598c6646dfc0..9b5ec59d65b0 100644
--- a/configs/devices/i386-softmmu/default.mak
+++ b/configs/devices/i386-softmmu/default.mak
@@ -18,6 +18,7 @@
#CONFIG_QXL=n
#CONFIG_SEV=n
#CONFIG_SGA=n
+#CONFIG_TDX=n
#CONFIG_TEST_DEVICES=n
#CONFIG_TPM_CRB=n
#CONFIG_TPM_TIS_ISA=n
diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index 9051083c1e78..929f6c3f0e85 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -10,6 +10,10 @@ config SGX
bool
depends on KVM
+config TDX
+ bool
+ depends on KVM
+
config PC
bool
imply APPLESMC
@@ -26,6 +30,7 @@ config PC
imply QXL
imply SEV
imply SGX
+ imply TDX
imply TEST_DEVICES
imply TPM_CRB
imply TPM_TIS_ISA
diff --git a/qapi/qom.json b/qapi/qom.json
index e0b2044e3d20..2ca7ce7c0da5 100644
--- a/qapi/qom.json
+++ b/qapi/qom.json
@@ -866,6 +866,16 @@
'reduced-phys-bits': 'uint32',
'*kernel-hashes': 'bool' } }
+##
+# @TdxGuestProperties:
+#
+# Properties for tdx-guest objects.
+#
+# Since: 8.2
+##
+{ 'struct': 'TdxGuestProperties',
+ 'data': { }}
+
##
# @ThreadContextProperties:
#
@@ -944,6 +954,7 @@
'sev-guest',
'thread-context',
's390-pv-guest',
+ 'tdx-guest',
'throttle-group',
'tls-creds-anon',
'tls-creds-psk',
@@ -1010,6 +1021,7 @@
'secret_keyring': { 'type': 'SecretKeyringProperties',
'if': 'CONFIG_SECRET_KEYRING' },
'sev-guest': 'SevGuestProperties',
+ 'tdx-guest': 'TdxGuestProperties',
'thread-context': 'ThreadContextProperties',
'throttle-group': 'ThrottleGroupProperties',
'tls-creds-anon': 'TlsCredsAnonProperties',
diff --git a/target/i386/kvm/meson.build b/target/i386/kvm/meson.build
index 40fbde96cac6..21ab03fe1349 100644
--- a/target/i386/kvm/meson.build
+++ b/target/i386/kvm/meson.build
@@ -11,6 +11,8 @@ i386_softmmu_kvm_ss.add(when: 'CONFIG_XEN_EMU', if_true: files('xen-emu.c'))
i386_softmmu_kvm_ss.add(when: 'CONFIG_SEV', if_false: files('sev-stub.c'))
+i386_softmmu_kvm_ss.add(when: 'CONFIG_TDX', if_true: files('tdx.c'))
+
i386_system_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_false: files('hyperv-stub.c'))
i386_system_ss.add_all(when: 'CONFIG_KVM', if_true: i386_softmmu_kvm_ss)
diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
new file mode 100644
index 000000000000..d3792d4a3d56
--- /dev/null
+++ b/target/i386/kvm/tdx.c
@@ -0,0 +1,40 @@
+/*
+ * QEMU TDX support
+ *
+ * Copyright Intel
+ *
+ * Author:
+ * Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qom/object_interfaces.h"
+
+#include "tdx.h"
+
+/* tdx guest */
+OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest,
+ tdx_guest,
+ TDX_GUEST,
+ CONFIDENTIAL_GUEST_SUPPORT,
+ { TYPE_USER_CREATABLE },
+ { NULL })
+
+static void tdx_guest_init(Object *obj)
+{
+ TdxGuest *tdx = TDX_GUEST(obj);
+
+ tdx->attributes = 0;
+}
+
+static void tdx_guest_finalize(Object *obj)
+{
+}
+
+static void tdx_guest_class_init(ObjectClass *oc, void *data)
+{
+}
diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h
new file mode 100644
index 000000000000..415aeb5af746
--- /dev/null
+++ b/target/i386/kvm/tdx.h
@@ -0,0 +1,19 @@
+#ifndef QEMU_I386_TDX_H
+#define QEMU_I386_TDX_H
+
+#include "exec/confidential-guest-support.h"
+
+#define TYPE_TDX_GUEST "tdx-guest"
+#define TDX_GUEST(obj) OBJECT_CHECK(TdxGuest, (obj), TYPE_TDX_GUEST)
+
+typedef struct TdxGuestClass {
+ ConfidentialGuestSupportClass parent_class;
+} TdxGuestClass;
+
+typedef struct TdxGuest {
+ ConfidentialGuestSupport parent_obj;
+
+ uint64_t attributes; /* TD attributes */
+} TdxGuest;
+
+#endif /* QEMU_I386_TDX_H */
--
2.34.1
