diff mbox series

[v7,11/13] spapr: PEF: prevent migration

Message ID 20210113235811.1909610-12-david@gibson.dropbear.id.au
State New
Headers show
Series Generalize memory encryption models | expand

Commit Message

David Gibson Jan. 13, 2021, 11:58 p.m. UTC 
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@gibson.dropbear.id.au>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
---
 hw/ppc/pef.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/hw/ppc/pef.c b/hw/ppc/pef.c
index 02b9b3b460..d7a49ef337 100644
--- a/hw/ppc/pef.c
+++ b/hw/ppc/pef.c
@@ -42,6 +42,8 @@  struct PefGuest {
 };
 
 #ifdef CONFIG_KVM
+static Error *pef_mig_blocker;
+
 static int kvmppc_svm_init(Error **errp)
 {
     if (!kvm_check_extension(kvm_state, KVM_CAP_PPC_SECURE_GUEST)) {
@@ -58,6 +60,11 @@  static int kvmppc_svm_init(Error **errp)
         }
     }
 
+    /* add migration blocker */
+    error_setg(&pef_mig_blocker, "PEF: Migration is not implemented");
+    /* NB: This can fail if --only-migratable is used */
+    migrate_add_blocker(pef_mig_blocker, &error_fatal);
+
     return 0;
 }