From patchwork Tue Dec 14 03:45:58 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rik van Riel X-Patchwork-Id: 408651 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oBE3nYUj026488 for ; Tue, 14 Dec 2010 03:52:22 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756554Ab0LNDso (ORCPT ); Mon, 13 Dec 2010 22:48:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:12250 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753074Ab0LNDso (ORCPT ); Mon, 13 Dec 2010 22:48:44 -0500 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id oBE3mXNP023014 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 13 Dec 2010 22:48:33 -0500 Received: from annuminas.surriel.com (ovpn-113-70.phx2.redhat.com [10.3.113.70]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id oBE3mVvp012685; Mon, 13 Dec 2010 22:48:32 -0500 Date: Mon, 13 Dec 2010 22:45:58 -0500 From: Rik van Riel To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Avi Kiviti , Srivatsa Vaddagiri , Peter Zijlstra , Mike Galbraith , Chris Wright Subject: [RFC -v2 PATCH 1/3] kvm: keep track of which task is running a KVM vcpu Message-ID: <20101213224558.1074e7fd@annuminas.surriel.com> In-Reply-To: <20101213224434.7495edb2@annuminas.surriel.com> References: <20101213224434.7495edb2@annuminas.surriel.com> Organization: Red Hat, Inc. Mime-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 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 (demeter1.kernel.org [140.211.167.41]); Tue, 14 Dec 2010 03:52:22 +0000 (UTC) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index a055742..180085b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -81,6 +81,7 @@ struct kvm_vcpu { #endif int vcpu_id; struct mutex mutex; + struct task_struct *task; int cpu; atomic_t guest_mode; struct kvm_run *run; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 5225052..c95bad1 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2248,6 +2248,7 @@ static void kvm_sched_in(struct preempt_notifier *pn, int cpu) { struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn); + vcpu->task = NULL; kvm_arch_vcpu_load(vcpu, cpu); } @@ -2256,6 +2257,7 @@ static void kvm_sched_out(struct preempt_notifier *pn, { struct kvm_vcpu *vcpu = preempt_notifier_to_vcpu(pn); + vcpu->task = current; kvm_arch_vcpu_put(vcpu); }