From patchwork Mon Apr 1 03:32:33 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: 2369151 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id CE25ADFE76 for ; Mon, 1 Apr 2013 03:37:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756842Ab3DADhF (ORCPT ); Sun, 31 Mar 2013 23:37:05 -0400 Received: from mga02.intel.com ([134.134.136.20]:45506 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756817Ab3DADhC (ORCPT ); Sun, 31 Mar 2013 23:37:02 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 31 Mar 2013 20:37:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,384,1363158000"; d="scan'208";a="310303466" Received: from yang-desktop.sh.intel.com ([10.239.47.153]) by orsmga002.jf.intel.com with ESMTP; 31 Mar 2013 20:37:00 -0700 From: Yang Zhang To: kvm@vger.kernel.org Cc: gleb@redhat.com, mtosatti@redhat.com, xiantao.zhang@intel.com, jun.nakajima@intel.com, Yang Zhang Subject: [PATCH v7 5/7] KVM: Set TMR when programming ioapic entry Date: Mon, 1 Apr 2013 11:32:33 +0800 Message-Id: <1364787155-3208-6-git-send-email-yang.z.zhang@intel.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1364787155-3208-1-git-send-email-yang.z.zhang@intel.com> References: <1364787155-3208-1-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 We already know the trigger mode of a given interrupt when programming the ioapice entry. So it's not necessary to set it in each interrupt delivery. Signed-off-by: Yang Zhang --- arch/x86/kvm/lapic.c | 15 +++++++++------ arch/x86/kvm/lapic.h | 1 + arch/x86/kvm/x86.c | 6 +++++- virt/kvm/ioapic.c | 9 +++++++-- virt/kvm/ioapic.h | 3 ++- 5 files changed, 24 insertions(+), 10 deletions(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index ce8d6f6..686afee 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -458,6 +458,15 @@ static inline int apic_find_highest_isr(struct kvm_lapic *apic) return result; } +void kvm_apic_update_tmr(struct kvm_vcpu *vcpu, u32 *tmr) +{ + struct kvm_lapic *apic = vcpu->arch.apic; + int i; + + for (i = 0; i < 8; i++) + apic_set_reg(apic, APIC_TMR + 0x10 * i, tmr[i]); +} + static void apic_update_ppr(struct kvm_lapic *apic) { u32 tpr, isrv, ppr, old_ppr; @@ -647,12 +656,6 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, if (unlikely(!apic_enabled(apic))) break; - if (trig_mode) { - apic_debug("level trig mode for vector %d", vector); - apic_set_vector(vector, apic->regs + APIC_TMR); - } else - apic_clear_vector(vector, apic->regs + APIC_TMR); - result = !apic_test_and_set_irr(vector, apic); trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode, trig_mode, vector, !result); diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index baa20cf..599076e 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -53,6 +53,7 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); void kvm_apic_set_version(struct kvm_vcpu *vcpu); +void kvm_apic_update_tmr(struct kvm_vcpu *vcpu, u32 *tmr); int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest); int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda); int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 64241b6..6ad7760 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5650,14 +5650,18 @@ static void kvm_gen_update_masterclock(struct kvm *kvm) static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu) { u64 eoi_exit_bitmap[4]; + u64 tmr[4]; if (!kvm_lapic_enabled(vcpu)) return; memset(eoi_exit_bitmap, 0, 32); + memset(tmr, 0, 32); - kvm_ioapic_scan_entry(vcpu, (unsigned long *)eoi_exit_bitmap); + kvm_ioapic_scan_entry(vcpu, (unsigned long *)eoi_exit_bitmap, + (unsigned long *)tmr); kvm_x86_ops->load_eoi_exitmap(vcpu, eoi_exit_bitmap); + kvm_apic_update_tmr(vcpu, (u32 *)tmr); } static int vcpu_enter_guest(struct kvm_vcpu *vcpu) diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index f37c889..b704b67 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -120,7 +120,8 @@ static void update_handled_vectors(struct kvm_ioapic *ioapic) } void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, - unsigned long *eoi_exit_bitmap) + unsigned long *eoi_exit_bitmap, + unsigned long *tmr) { struct kvm_ioapic *ioapic = vcpu->kvm->arch.vioapic; union kvm_ioapic_redirect_entry *e; @@ -135,8 +136,12 @@ void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index))) { if (kvm_apic_match_dest(vcpu, NULL, 0, - e->fields.dest_id, e->fields.dest_mode)) + e->fields.dest_id, e->fields.dest_mode)) { + __set_bit(irqe.vector, eoi_exit_bitmap); + if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG) + __set_bit(irqe.vector, tmr); + } } } spin_unlock(&ioapic->lock); diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h index e3538ba..280b4fc 100644 --- a/virt/kvm/ioapic.h +++ b/virt/kvm/ioapic.h @@ -84,6 +84,7 @@ int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state); void kvm_vcpu_scan_ioapic(struct kvm *kvm); void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, - unsigned long *eoi_exit_bitmap); + unsigned long *eoi_exit_bitmap, + unsigned long *tmr); #endif