x86/kvm: Don't waste kvmclock memory if there is nopv parameter

When the "nopv" command line parameter is used, it should not waste
memory for kvmclock.
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Message-Id: <1646727529-11774-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kernel/kvmclock.c

@@ -239,7 +239,7 @@ static void __init kvmclock_init_mem(void)
 
 static int __init kvm_setup_vsyscall_timeinfo(void)
 {
-	if (!kvm_para_available() || !kvmclock)
+	if (!kvm_para_available() || !kvmclock || nopv)
 		return 0;
 
 	kvmclock_init_mem();