commit 109238a8d97cd8e85ca614109724a0b1222b21f5
author Paolo Bonzini <pbonzini@redhat.com> Wed Jun 05 20:09:44 2024 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Mon Jun 17 09:47:39 2024 +0200
tree 919bcb79c26b2e35d5944955388d22d1d15c49f0
parent 0c4da54883336e43af13ad3b3c33dac646cfa9fb

target/i386: SEV: do not assume machine->cgs is SEV

There can be other confidential computing classes that are not derived
from sev-common.  Avoid aborting when encountering them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

target/i386/sev.c

diff --git a/target/i386/sev.c b/target/i386/sev.c
index c40562d..30b83f1 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -1712,7 +1712,9 @@
 {
     X86CPU *x86;
     CPUX86State *env;
-    SevCommonState *sev_common = SEV_COMMON(MACHINE(qdev_get_machine())->cgs);
+    ConfidentialGuestSupport *cgs = MACHINE(qdev_get_machine())->cgs;
+    SevCommonState *sev_common = SEV_COMMON(
+        object_dynamic_cast(OBJECT(cgs), TYPE_SEV_COMMON));
 
     /* Only update if we have valid reset information */
     if (!sev_common || !sev_common->reset_data_valid) {