From patchwork Mon Apr 8 14:17:44 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Yang Z" X-Patchwork-Id: 2408591 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 42DAA3FC71 for ; Mon, 8 Apr 2013 14:22:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936244Ab3DHOWT (ORCPT ); Mon, 8 Apr 2013 10:22:19 -0400 Received: from mga03.intel.com ([143.182.124.21]:9233 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936231Ab3DHOWS (ORCPT ); Mon, 8 Apr 2013 10:22:18 -0400 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga101.ch.intel.com with ESMTP; 08 Apr 2013 07:22:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,432,1363158000"; d="scan'208";a="224549801" Received: from yang-desktop.sh.intel.com ([10.239.47.153]) by AZSMGA002.ch.intel.com with ESMTP; 08 Apr 2013 07:22:16 -0700 From: Yang Zhang To: kvm@vger.kernel.org Cc: gleb@redhat.com, mtosatti@redhat.com, xiantao.zhang@intel.com, Yang Zhang Subject: [PATCH v8 2/7] KVM: Introduce struct rtc_status Date: Mon, 8 Apr 2013 22:17:44 +0800 Message-Id: <1365430669-31126-3-git-send-email-yang.z.zhang@intel.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1365430669-31126-1-git-send-email-yang.z.zhang@intel.com> References: <1365430669-31126-1-git-send-email-yang.z.zhang@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Yang Zhang rtc_status is used to track RTC interrupt delivery status. The pending_eoi will be increased by vcpu who received RTC interrupt and will be decreased when EOI to this interrupt. Also, we use dest_map to record the destination vcpu to avoid the case that vcpu who didn't get the RTC interupt, but issued EOI with same vector of RTC and descreased pending_eoi by mistake. Signed-off-by: Yang Zhang --- virt/kvm/ioapic.h | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h index 2fc61a5..87cd94b 100644 --- a/virt/kvm/ioapic.h +++ b/virt/kvm/ioapic.h @@ -34,6 +34,17 @@ struct kvm_vcpu; #define IOAPIC_INIT 0x5 #define IOAPIC_EXTINT 0x7 +#ifdef CONFIG_X86 +#define RTC_GSI 8 +#else +#define RTC_GSI -1U +#endif + +struct rtc_status { + int pending_eoi; + DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS); +}; + struct kvm_ioapic { u64 base_address; u32 ioregsel; @@ -47,6 +58,7 @@ struct kvm_ioapic { void (*ack_notifier)(void *opaque, int irq); spinlock_t lock; DECLARE_BITMAP(handled_vectors, 256); + struct rtc_status rtc_status; }; #ifdef DEBUG