From patchwork Mon Jun 24 12:43:53 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Raghavendra K T X-Patchwork-Id: 2771091 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 89B30C0AB1 for ; Mon, 24 Jun 2013 12:42:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7852320223 for ; Mon, 24 Jun 2013 12:42:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 476D320212 for ; Mon, 24 Jun 2013 12:42:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753300Ab3FXMkM (ORCPT ); Mon, 24 Jun 2013 08:40:12 -0400 Received: from e28smtp02.in.ibm.com ([122.248.162.2]:48162 "EHLO e28smtp02.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752013Ab3FXMkG (ORCPT ); Mon, 24 Jun 2013 08:40:06 -0400 Received: from /spool/local by e28smtp02.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 24 Jun 2013 18:02:07 +0530 Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id D594A1258054; Mon, 24 Jun 2013 18:09:02 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r5OCeAr215532070; Mon, 24 Jun 2013 18:10:10 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r5OCdpxB017299; Mon, 24 Jun 2013 12:39:55 GMT Received: from codeblue.in.ibm.com (codeblue.in.ibm.com [9.124.158.47]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id r5OCdp6v017251; Mon, 24 Jun 2013 12:39:51 GMT From: Raghavendra K T To: , , , , , , Cc: linux-doc@vger.kernel.org, , Raghavendra K T , , , , , , , , , , , , , , , , , , , , Date: Mon, 24 Jun 2013 18:13:53 +0530 Message-Id: <20130624124353.27508.94224.sendpatchset@codeblue.in.ibm.com> In-Reply-To: <20130624124014.27508.8906.sendpatchset@codeblue.in.ibm.com> References: <20130624124014.27508.8906.sendpatchset@codeblue.in.ibm.com> Subject: [PATCH RFC V10 16/18] kvm hypervisor : Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13062412-5816-0000-0000-0000089A6378 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-8.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic From: Raghavendra K T Note that we are using APIC_DM_REMRD which has reserved usage. In future if APIC_DM_REMRD usage is standardized, then we should find some other way or go back to old method. Suggested-by: Gleb Natapov Signed-off-by: Raghavendra K T --- arch/x86/kvm/lapic.c | 5 ++++- arch/x86/kvm/x86.c | 25 ++++++------------------- 2 files changed, 10 insertions(+), 20 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index e1adbb4..3f5f82e 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -706,7 +706,10 @@ out: break; case APIC_DM_REMRD: - apic_debug("Ignoring delivery mode 3\n"); + result = 1; + vcpu->arch.pv.pv_unhalted = 1; + kvm_make_request(KVM_REQ_EVENT, vcpu); + kvm_vcpu_kick(vcpu); break; case APIC_DM_SMI: diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 92a9932..b963c86 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5456,27 +5456,14 @@ int kvm_hv_hypercall(struct kvm_vcpu *vcpu) */ static void kvm_pv_kick_cpu_op(struct kvm *kvm, int apicid) { - struct kvm_vcpu *vcpu = NULL; - int i; + struct kvm_lapic_irq lapic_irq; - kvm_for_each_vcpu(i, vcpu, kvm) { - if (!kvm_apic_present(vcpu)) - continue; + lapic_irq.shorthand = 0; + lapic_irq.dest_mode = 0; + lapic_irq.dest_id = apicid; - if (kvm_apic_match_dest(vcpu, 0, 0, apicid, 0)) - break; - } - if (vcpu) { - /* - * Setting unhalt flag here can result in spurious runnable - * state when unhalt reset does not happen in vcpu_block. - * But that is harmless since that should soon result in halt. - */ - vcpu->arch.pv.pv_unhalted = true; - /* We need everybody see unhalt before vcpu unblocks */ - smp_wmb(); - kvm_vcpu_kick(vcpu); - } + lapic_irq.delivery_mode = APIC_DM_REMRD; + kvm_irq_delivery_to_apic(kvm, 0, &lapic_irq, NULL); } int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)