[PATCH v2 5/9] target/i386: SEV: Enable use of KVM_SEV_INIT2 for SEV-ES guests

["Naveen N Rao (AMD)" <naveen@kernel.org>]

In preparation for allowing SEV-ES guests to enable VMSA SEV features,
update sev_init2_required() to return true if any SEV features are
requested. This enables qemu to use KVM_SEV_INIT2 for SEV-ES guests when
necessary.

Reviewed-by: Nikunj A Dadhania <nikunj@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Naveen N Rao (AMD) <naveen@kernel.org>
---
 target/i386/sev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 2f41e1c0b688..88dd0750d481 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -1699,8 +1699,7 @@ sev_vm_state_change(void *opaque, bool running, RunState state)
  */
 static bool sev_init2_required(SevGuestState *sev_guest)
 {
-    /* Currently no KVM_SEV_INIT2-specific options are exposed via QEMU */
-    return false;
+    return !!SEV_COMMON(sev_guest)->sev_features;
 }
 
 static int sev_kvm_type(X86ConfidentialGuest *cg)
-- 
2.51.0