From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: 3.10.X kernel/jump_label kvm Date: Mon, 03 Mar 2014 17:36:11 +0100 Message-ID: <5314AF7B.10903@redhat.com> References: <5310E7E8.1040508@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit To: Stefan Priebe , kvm@vger.kernel.org Return-path: Received: from mail-qa0-f45.google.com ([209.85.216.45]:34393 "EHLO mail-qa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753830AbaCCQg0 (ORCPT ); Mon, 3 Mar 2014 11:36:26 -0500 Received: by mail-qa0-f45.google.com with SMTP id hw13so3606402qab.4 for ; Mon, 03 Mar 2014 08:36:25 -0800 (PST) In-Reply-To: <5310E7E8.1040508@profihost.ag> Sender: kvm-owner@vger.kernel.org List-ID: Il 28/02/2014 20:47, Stefan Priebe ha scritto: > Hello, > > i got this stack trace multiple times while using a vanilla 3.10.32 > kernel and already sent it to the list in december but got no replies. Please try the patch of commit 0dce7cd67fd9055c4a2ff278f8af1431e646d346: diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 1673940cf9c3..775702f649ca 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1355,7 +1355,7 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value) vcpu->arch.apic_base = value; /* update jump label if enable bit changes */ - if ((vcpu->arch.apic_base ^ value) & MSR_IA32_APICBASE_ENABLE) { + if ((old_value ^ value) & MSR_IA32_APICBASE_ENABLE) { if (value & MSR_IA32_APICBASE_ENABLE) static_key_slow_dec_deferred(&apic_hw_disabled); else Paolo