From 8f54bbd0b4d9218e7c56a3a9c572b70943579e22 Mon Sep 17 00:00:00 2001 From: Michal Privoznik Date: Mon, 30 Dec 2019 09:00:51 +0100 Subject: [PATCH] x86: Check for machine state object class before typecasting it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In ed9e923c3c ("x86: move SMM property to X86MachineState", 2019-12-17) In v4.2.0-246-ged9e923c3c the SMM property was moved from PC machine class to x86 machine class. Makes sense, but the change was too aggressive: in target/i386/kvm.c:kvm_arch_init() it altered check which sets SMRAM if given machine has SMM enabled. The line that detects whether given machine object is class of PC_MACHINE was removed from the check. This makes qemu try to enable SMRAM for all machine types, which is not what we want. Signed-off-by: Michal Privoznik Fixes: ed9e923c3c ("x86: move SMM property to X86MachineState", 2019-12-17) Reviewed-by: Philippe Mathieu-Daudé Message-Id: <7cc91bab3191bfd7e071bdd3fdf7fe2a2991deb0.1577692822.git.mprivozn@redhat.com> Signed-off-by: Paolo Bonzini --- target/i386/kvm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 0b511906e3..7ee3202634 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -2173,6 +2173,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) } if (kvm_check_extension(s, KVM_CAP_X86_SMM) && + object_dynamic_cast(OBJECT(ms), TYPE_X86_MACHINE) && x86_machine_is_smm_enabled(X86_MACHINE(ms))) { smram_machine_done.notify = register_smram_listener; qemu_add_machine_init_done_notifier(&smram_machine_done);