From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yang Zhang Subject: [PATCH v7 2/7] KVM: Introduce struct rtc_status Date: Mon, 1 Apr 2013 08:40:11 +0800 Message-ID: <1364776816-30772-3-git-send-email-yang.z.zhang@intel.com> References: <1364776816-30772-1-git-send-email-yang.z.zhang@intel.com> Cc: gleb@redhat.com, mtosatti@redhat.com, xiantao.zhang@intel.com, Yang Zhang To: kvm@vger.kernel.org Return-path: Received: from mga09.intel.com ([134.134.136.24]:19062 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756234Ab3DAAop (ORCPT ); Sun, 31 Mar 2013 20:44:45 -0400 In-Reply-To: <1364776816-30772-1-git-send-email-yang.z.zhang@intel.com> Sender: kvm-owner@vger.kernel.org List-ID: 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 -- 1.7.1