From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yang Zhang Subject: [PATCH v3 0/4] x86, apicv: Add APIC virtualization support Date: Mon, 3 Dec 2012 15:01:00 +0800 Message-ID: <1354518064-3066-1-git-send-email-yang.z.zhang@intel.com> Cc: gleb@redhat.com, Yang Zhang To: kvm@vger.kernel.org Return-path: Received: from mga14.intel.com ([143.182.124.37]:4241 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750851Ab2LCHFh (ORCPT ); Mon, 3 Dec 2012 02:05:37 -0500 Sender: kvm-owner@vger.kernel.org List-ID: APIC virtualization is a new feature which can eliminate most of VM exit when vcpu handles a interrupt: APIC register virtualization: APIC read access doesn't cause APIC-access VM exits. APIC write becomes trap-like. Virtual interrupt delivery: Virtual interrupt delivery avoids KVM to inject vAPIC interrupts manually, which is fully taken care of by the hardware. Please refer to Intel SDM volume 3, chapter 29 for more details. Changes v2 to v3: * Drop Posted Interrupt patch from v3. According Gleb's suggestion, we will use global vector for all VCPUs as notification event vector. So we will rewrite the Posted Interrupt patch. And resend it later. * Use TMR to set the eoi exiting bitmap. We only want to set eoi exiting bitmap for the interrupt which is level trigger or has notifier in EOI write path. So TMR is enough to distinguish the interrupt trigger mode. * Simplify some code according Gleb's comments. * rebased on top of KVM upstream. Changes v1 to v2: * Add Posted Interrupt support in this series patch. * Since there is a notifer hook in vAPIC EOI for PIT interrupt. So always Set PIT interrupt in eoi exit bitmap to force vmexit when EOI to interrupt. * Rebased on top of KVM upstream Yang Zhang (4): x86: PIT connects to pin 2 of IOAPIC x86, apicv: add APICv register virtualization support x86, apicv: add virtual interrupt delivery support x86, apicv: add virtual x2apic support arch/x86/include/asm/kvm_host.h | 4 + arch/x86/include/asm/vmx.h | 13 ++ arch/x86/kvm/irq.c | 53 ++++++--- arch/x86/kvm/lapic.c | 72 +++++++++++-- arch/x86/kvm/lapic.h | 8 ++ arch/x86/kvm/svm.c | 19 +++ arch/x86/kvm/vmx.c | 232 +++++++++++++++++++++++++++++++++++++-- arch/x86/kvm/x86.c | 34 +++++- virt/kvm/ioapic.c | 3 +- 9 files changed, 398 insertions(+), 40 deletions(-)