[RFC PATCH v3 24/36] i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu

[Xiaoyao Li]

TDX vcpu needs to be initialized by SEAMCALL(TDH.VP.INIT) and KVM
provides vcpu level IOCTL KVM_TDX_INIT_VCPU for it.

KVM_TDX_INIT_VCPU needs the address of the HOB as input. Invoke it for
each vcpu after HOB list is created.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
 target/i386/kvm/tdx.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index f7a18f07a4df..f06a0895b77a 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -212,6 +212,22 @@ static void tdx_init_ram_entries(void)
     tdx_guest->nr_ram_entries = j;
 }
 
+static void tdx_post_init_vcpu(void)
+{
+    TdxFirmwareEntry *hob;
+    CPUState *cpu;
+    int r;
+
+    hob = tdx_get_hob_entry(tdx_guest);
+    CPU_FOREACH(cpu) {
+        r = tdx_vcpu_ioctl(cpu, KVM_TDX_INIT_VCPU, 0, (void *)hob->address);
+        if (r < 0) {
+            error_report("KVM_TDX_INIT_VCPU failed %s", strerror(-r));
+            exit(1);
+        }
+    }
+}
+
 static void tdx_finalize_vm(Notifier *notifier, void *unused)
 {
     MachineState *ms = MACHINE(qdev_get_machine());
@@ -251,6 +267,8 @@ static void tdx_finalize_vm(Notifier *notifier, void 
*unused)
     qsort(tdx_guest->ram_entries, tdx_guest->nr_ram_entries,
           sizeof(TdxRamEntry), &tdx_ram_entry_compare);
     tdvf_hob_create(tdx_guest, tdx_get_hob_entry(tdx_guest));
+
+    tdx_post_init_vcpu();
 }
 
 static Notifier tdx_machine_done_notify = {
-- 
2.27.0