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-rw-r--r--hw/i386/sgx-epc.c20
-rw-r--r--hw/i386/x86.c29
-rw-r--r--include/hw/i386/pc.h3
-rw-r--r--include/hw/i386/sgx-epc.h14
-rw-r--r--include/hw/i386/x86.h1
-rw-r--r--qapi/machine.json26
-rw-r--r--qemu-options.hx10
7 files changed, 94 insertions, 9 deletions
diff --git a/hw/i386/sgx-epc.c b/hw/i386/sgx-epc.c
index c584acc17b..6677dc74b5 100644
--- a/hw/i386/sgx-epc.c
+++ b/hw/i386/sgx-epc.c
@@ -14,13 +14,8 @@
 #include "hw/i386/sgx-epc.h"
 #include "hw/mem/memory-device.h"
 #include "hw/qdev-properties.h"
-#include "monitor/qdev.h"
 #include "qapi/error.h"
 #include "qapi/visitor.h"
-#include "qemu/config-file.h"
-#include "qemu/error-report.h"
-#include "qemu/option.h"
-#include "qemu/units.h"
 #include "target/i386/cpu.h"
 #include "exec/address-spaces.h"
 
@@ -56,6 +51,8 @@ static void sgx_epc_realize(DeviceState *dev, Error **errp)
 {
     PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
     X86MachineState *x86ms = X86_MACHINE(pcms);
+    MemoryDeviceState *md = MEMORY_DEVICE(dev);
+    SGXEPCState *sgx_epc = &pcms->sgx_epc;
     SGXEPCDevice *epc = SGX_EPC(dev);
     HostMemoryBackend *hostmem;
     const char *path;
@@ -77,7 +74,18 @@ static void sgx_epc_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    error_setg(errp, "'" TYPE_SGX_EPC "' not supported");
+    epc->addr = sgx_epc->base + sgx_epc->size;
+
+    memory_region_add_subregion(&sgx_epc->mr, epc->addr - sgx_epc->base,
+                                host_memory_backend_get_memory(hostmem));
+
+    host_memory_backend_set_mapped(hostmem, true);
+
+    sgx_epc->sections = g_renew(SGXEPCDevice *, sgx_epc->sections,
+                                sgx_epc->nr_sections + 1);
+    sgx_epc->sections[sgx_epc->nr_sections++] = epc;
+
+    sgx_epc->size += memory_device_get_region_size(md, errp);
 }
 
 static void sgx_epc_unrealize(DeviceState *dev)
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 00448ed55a..41ef9a84a9 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -30,6 +30,8 @@
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
 #include "qapi/qapi-visit-common.h"
+#include "qapi/clone-visitor.h"
+#include "qapi/qapi-visit-machine.h"
 #include "qapi/visitor.h"
 #include "sysemu/qtest.h"
 #include "sysemu/whpx.h"
@@ -1263,6 +1265,27 @@ static void x86_machine_set_bus_lock_ratelimit(Object *obj, Visitor *v,
     visit_type_uint64(v, name, &x86ms->bus_lock_ratelimit, errp);
 }
 
+static void machine_get_sgx_epc(Object *obj, Visitor *v, const char *name,
+                                void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);
+    SgxEPCList *list = x86ms->sgx_epc_list;
+
+    visit_type_SgxEPCList(v, name, &list, errp);
+}
+
+static void machine_set_sgx_epc(Object *obj, Visitor *v, const char *name,
+                                void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);
+    SgxEPCList *list;
+
+    list = x86ms->sgx_epc_list;
+    visit_type_SgxEPCList(v, name, &x86ms->sgx_epc_list, errp);
+
+    qapi_free_SgxEPCList(list);
+}
+
 static void x86_machine_initfn(Object *obj)
 {
     X86MachineState *x86ms = X86_MACHINE(obj);
@@ -1322,6 +1345,12 @@ static void x86_machine_class_init(ObjectClass *oc, void *data)
                                 x86_machine_set_bus_lock_ratelimit, NULL, NULL);
     object_class_property_set_description(oc, X86_MACHINE_BUS_LOCK_RATELIMIT,
             "Set the ratelimit for the bus locks acquired in VMs");
+
+    object_class_property_add(oc, "sgx-epc", "SgxEPC",
+        machine_get_sgx_epc, machine_set_sgx_epc,
+        NULL, NULL);
+    object_class_property_set_description(oc, "sgx-epc",
+        "SGX EPC device");
 }
 
 static const TypeInfo x86_machine_info = {
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 4d2e35a152..668e48be8a 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -12,6 +12,7 @@
 #include "hw/acpi/acpi_dev_interface.h"
 #include "hw/hotplug.h"
 #include "qom/object.h"
+#include "hw/i386/sgx-epc.h"
 
 #define HPET_INTCAP "hpet-intcap"
 
@@ -49,6 +50,8 @@ typedef struct PCMachineState {
 
     /* ACPI Memory hotplug IO base address */
     hwaddr memhp_io_base;
+
+    SGXEPCState sgx_epc;
 } PCMachineState;
 
 #define PC_MACHINE_ACPI_DEVICE_PROP "acpi-device"
diff --git a/include/hw/i386/sgx-epc.h b/include/hw/i386/sgx-epc.h
index cf3ed5c0cd..83269972e0 100644
--- a/include/hw/i386/sgx-epc.h
+++ b/include/hw/i386/sgx-epc.h
@@ -41,4 +41,18 @@ typedef struct SGXEPCDevice {
     HostMemoryBackendEpc *hostmem;
 } SGXEPCDevice;
 
+/*
+ * @base: address in guest physical address space where EPC regions start
+ * @mr: address space container for memory devices
+ */
+typedef struct SGXEPCState {
+    uint64_t base;
+    uint64_t size;
+
+    MemoryRegion mr;
+
+    struct SGXEPCDevice **sections;
+    int nr_sections;
+} SGXEPCState;
+
 #endif
diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
index 6e9244a82c..23267a3674 100644
--- a/include/hw/i386/x86.h
+++ b/include/hw/i386/x86.h
@@ -62,6 +62,7 @@ struct X86MachineState {
     unsigned pci_irq_mask;
     unsigned apic_id_limit;
     uint16_t boot_cpus;
+    SgxEPCList *sgx_epc_list;
 
     OnOffAuto smm;
     OnOffAuto acpi;
diff --git a/qapi/machine.json b/qapi/machine.json
index 32d47f4e35..26c539fe2c 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1225,7 +1225,6 @@
 ##
 { 'struct': 'VirtioMEMDeviceInfoWrapper',
   'data': { 'data': 'VirtioMEMDeviceInfo' } }
-
 ##
 # @MemoryDeviceInfo:
 #
@@ -1247,6 +1246,31 @@
 }
 
 ##
+# @SgxEPC:
+#
+# Sgx EPC cmdline information
+#
+# @memdev: memory backend linked with device
+#
+# Since: 6.2
+##
+{ 'struct': 'SgxEPC',
+  'data': { 'memdev': 'str' } }
+
+##
+# @SgxEPCProperties:
+#
+# SGX properties of machine types.
+#
+# @sgx-epc: list of ids of memory-backend-epc objects.
+#
+# Since: 6.2
+##
+{ 'struct': 'SgxEPCProperties',
+  'data': { 'sgx-epc': ['SgxEPC'] }
+}
+
+##
 # @query-memory-devices:
 #
 # Lists available memory devices and their state
diff --git a/qemu-options.hx b/qemu-options.hx
index 8f603cc7e6..ceca52818a 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -126,8 +126,14 @@ SRST
             -m 512M
 ERST
 
-HXCOMM Deprecated by -machine
-DEF("M", HAS_ARG, QEMU_OPTION_M, "", QEMU_ARCH_ALL)
+DEF("M", HAS_ARG, QEMU_OPTION_M,
+    "                sgx-epc.0.memdev=memid\n",
+    QEMU_ARCH_ALL)
+
+SRST
+``sgx-epc.0.memdev=@var{memid}``
+    Define an SGX EPC section.
+ERST
 
 DEF("cpu", HAS_ARG, QEMU_OPTION_cpu,
     "-cpu cpu        select CPU ('-cpu help' for list)\n", QEMU_ARCH_ALL)