From: Xiaoyao Li <xiaoyao.li@intel.com>
Date: Thu, 8 May 2025 14:59:31 +0000 (-0400)
Subject: i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu
X-Git-Tag: v10.1.0-rc0~69^2~40
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=41f7fd22073561a23229c0479d9d708dee9d3a1e;p=thirdparty%2Fqemu.git

i386/tdx: Call KVM_TDX_INIT_VCPU to initialize TDX vcpu

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>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-26-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c
index 43529a9e0ed..99d13bd8441 100644
--- a/target/i386/kvm/tdx.c
+++ b/target/i386/kvm/tdx.c
@@ -259,6 +259,18 @@ static void tdx_init_ram_entries(void)
     tdx_guest->nr_ram_entries = j;
 }
 
+static void tdx_post_init_vcpus(void)
+{
+    TdxFirmwareEntry *hob;
+    CPUState *cpu;
+
+    hob = tdx_get_hob_entry(tdx_guest);
+    CPU_FOREACH(cpu) {
+        tdx_vcpu_ioctl(cpu, KVM_TDX_INIT_VCPU, 0, (void *)hob->address,
+                       &error_fatal);
+    }
+}
+
 static void tdx_finalize_vm(Notifier *notifier, void *unused)
 {
     TdxFirmware *tdvf = &tdx_guest->tdvf;
@@ -302,6 +314,8 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused)
 
     tdvf_hob_create(tdx_guest, tdx_get_hob_entry(tdx_guest));
 
+    tdx_post_init_vcpus();
+
     for_each_tdx_fw_entry(tdvf, entry) {
         struct kvm_tdx_init_mem_region region;
         uint32_t flags;