[PATCH v3 8/9] spapr: PEF: block migration

[David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>]

We haven't yet implemented the fairly involved handshaking that will be
needed to migrate PEF protected guests.  For now, just use a migration
blocker so we get a meaningful error if someone attempts this (this is the
same approach used by AMD SEV).

Signed-off-by: David Gibson <david@xxxxxxxxxxxxxxxxxxxxx>
---
 target/ppc/pef.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/ppc/pef.c b/target/ppc/pef.c
index 53a6af0347..6a50efd580 100644
--- a/target/ppc/pef.c
+++ b/target/ppc/pef.c
@@ -36,6 +36,8 @@ struct PefGuestState {
     Object parent_obj;
 };
 
+static Error *pef_mig_blocker;
+
 static int pef_kvm_init(HostTrustLimitation *gmpo, Error **errp)
 {
     if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) {
@@ -52,6 +54,10 @@ static int pef_kvm_init(HostTrustLimitation *gmpo, Error **errp)
         }
     }
 
+    /* add migration blocker */
+    error_setg(&pef_mig_blocker, "PEF: Migration is not implemented");
+    migrate_add_blocker(pef_mig_blocker, &error_abort);
+
     return 0;
 }
 
-- 
2.26.2