[RFC PATCH 20/23] i386/tdx: Add TDVF memory via INIT_MEM_REGION

[Isaku Yamahata <isaku.yamahata@xxxxxxxxx>]

Add, and optionally measure, TDVF memory via KVM_TDX_INIT_MEM_REGION as
part of finalizing the TD.

Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
Co-developed-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
 target/i386/kvm/tdx.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index 8e4bf98735..49b4355849 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -83,10 +83,26 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused)
 {
     MachineState *ms = MACHINE(qdev_get_machine());
     TdxGuest *tdx = TDX_GUEST(ms->cgs);
+    TdxFirmwareEntry *entry;
 
     tdvf_hob_create(tdx, tdx_get_hob_entry(tdx));
 
+    for_each_fw_entry(&tdx->fw, entry) {
+        struct kvm_tdx_init_mem_region mem_region = {
+            .source_addr = (__u64)entry->mem_ptr,
+            .gpa = entry->address,
+            .nr_pages = entry->size / 4096,
+        };
+
+        __u32 metadata = entry->attributes & TDVF_SECTION_ATTRIBUTES_EXTENDMR ?
+                         KVM_TDX_MEASURE_MEMORY_REGION : 0;
+
+        tdx_ioctl(KVM_TDX_INIT_MEM_REGION, metadata, &mem_region);
+    }
+
     tdx_ioctl(KVM_TDX_FINALIZE_VM, 0, NULL);
+
+    tdx->parent_obj.ready = true;
 }
 
 static Notifier tdx_machine_done_late_notify = {
@@ -288,9 +304,6 @@ static void tdx_guest_init(Object *obj)
     tdx->debug = false;
     object_property_add_bool(obj, "debug", tdx_guest_get_debug,
                              tdx_guest_set_debug);
-
-    /* TODO: move this after fully TD initialized */
-    tdx->parent_obj.ready = true;
 }
 
 static void tdx_guest_finalize(Object *obj)
-- 
2.17.1