i386/kvm: Require KVM_CAP_IRQ_ROUTING

KVM_CAP_IRQ_ROUTING is available since 2009 (Linux v2.6.30), so
it's safe to just make it a requirement on x86.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200922201922.2153598-2-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 0098be701511b8db4500b021cff877f9b7dc8ec2..69c691ad774d304f845a54b0e92f33323518ca6b 100644 (file)
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -2114,6 +2114,11 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
     int ret;
     struct utsname utsname;
 
+    if (!kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
+        error_report("kvm: KVM_CAP_IRQ_ROUTING not supported by KVM");
+        return -ENOTSUP;
+    }
+
     has_xsave = kvm_check_extension(s, KVM_CAP_XSAVE);
     has_xcrs = kvm_check_extension(s, KVM_CAP_XCRS);
     has_pit_state2 = kvm_check_extension(s, KVM_CAP_PIT_STATE2);