From patchwork Fri Aug 20 08:07:28 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zachary Amsden X-Patchwork-Id: 120545 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o7K8FIeH004254 for ; Fri, 20 Aug 2010 08:15:19 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752046Ab0HTIO3 (ORCPT ); Fri, 20 Aug 2010 04:14:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47824 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751969Ab0HTIIe (ORCPT ); Fri, 20 Aug 2010 04:08:34 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o7K88TAe030135 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 20 Aug 2010 04:08:30 -0400 Received: from mysore (vpn-9-158.rdu.redhat.com [10.11.9.158]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o7K87qf8027969; Fri, 20 Aug 2010 04:08:27 -0400 From: Zachary Amsden To: kvm@vger.kernel.org Cc: Zachary Amsden , Avi Kivity , Marcelo Tosatti , Glauber Costa , Thomas Gleixner , John Stultz , linux-kernel@vger.kernel.org Subject: [KVM timekeeping 14/35] Add clock sync request to hardware enable Date: Thu, 19 Aug 2010 22:07:28 -1000 Message-Id: <1282291669-25709-15-git-send-email-zamsden@redhat.com> In-Reply-To: <1282291669-25709-1-git-send-email-zamsden@redhat.com> References: <1282291669-25709-1-git-send-email-zamsden@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Fri, 20 Aug 2010 08:15:19 +0000 (UTC) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 0f3e5fb..1948c36 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5533,7 +5533,15 @@ int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu) int kvm_arch_hardware_enable(void *garbage) { + struct kvm *kvm; + struct kvm_vcpu *vcpu; + int i; + kvm_shared_msr_cpu_online(); + list_for_each_entry(kvm, &vm_list, vm_list) + kvm_for_each_vcpu(i, vcpu, kvm) + if (vcpu->cpu == smp_processor_id()) + kvm_request_guest_time_update(vcpu); return kvm_x86_ops->hardware_enable(garbage); } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index d4853a5..c0f4e70 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1961,7 +1961,9 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val, case CPU_STARTING: printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n", cpu); + spin_lock(&kvm_lock); hardware_enable(NULL); + spin_unlock(&kvm_lock); break; } return NOTIFY_OK; @@ -2166,8 +2168,10 @@ static int kvm_suspend(struct sys_device *dev, pm_message_t state) static int kvm_resume(struct sys_device *dev) { - if (kvm_usage_count) + if (kvm_usage_count) { + WARN_ON(spin_is_locked(&kvm_lock)); hardware_enable(NULL); + } return 0; }