From patchwork Wed Dec 3 07:39:41 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wu, Feng" X-Patchwork-Id: 5427651 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 74AB8BEEA8 for ; Wed, 3 Dec 2014 07:54:32 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AD6BD202FE for ; Wed, 3 Dec 2014 07:54:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE0BC20266 for ; Wed, 3 Dec 2014 07:54:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752262AbaLCHuV (ORCPT ); Wed, 3 Dec 2014 02:50:21 -0500 Received: from mga11.intel.com ([192.55.52.93]:60624 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752248AbaLCHuQ (ORCPT ); Wed, 3 Dec 2014 02:50:16 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 02 Dec 2014 23:50:15 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,506,1413270000"; d="scan'208";a="631852345" Received: from unknown (HELO wf-hsw-desktop.bj.intel.com) ([10.238.154.53]) by fmsmga001.fm.intel.com with ESMTP; 02 Dec 2014 23:50:12 -0800 From: Feng Wu To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, gleb@kernel.org, pbonzini@redhat.com, dwmw2@infradead.org, joro@8bytes.org, alex.williamson@redhat.com, jiang.liu@linux.intel.com Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, Feng Wu Subject: [v2 12/25] KVM: Initialize VT-d Posted-Interrupts Descriptor Date: Wed, 3 Dec 2014 15:39:41 +0800 Message-Id: <1417592394-24343-13-git-send-email-feng.wu@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1417592394-24343-1-git-send-email-feng.wu@intel.com> References: <1417592394-24343-1-git-send-email-feng.wu@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 This patch initializes the VT-d Posted-Interrupts Descriptor. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0b1383e..66ca275 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -45,6 +45,7 @@ #include #include #include +#include #include "trace.h" @@ -4433,6 +4434,30 @@ static void ept_set_mmio_spte_mask(void) kvm_mmu_set_mmio_spte_mask((0x3ull << 62) | 0x6ull); } +static void pi_desc_init(struct vcpu_vmx *vmx) +{ + unsigned int dest; + + if (!irq_remapping_cap(IRQ_POSTING_CAP)) + return; + + /* + * Initialize Posted-Interrupt Descriptor + */ + + pi_clear_sn(&vmx->pi_desc); + vmx->pi_desc.nv = POSTED_INTR_VECTOR; + + /* Physical mode for Notificaiton Event */ + vmx->pi_desc.ndm = 0; + dest = cpu_physical_id(vmx->vcpu.cpu); + + if (x2apic_enabled()) + vmx->pi_desc.ndst = dest; + else + vmx->pi_desc.ndst = (dest << 8) & 0xFF00; +} + /* * Sets up the vmcs for emulated real mode. */ @@ -4476,6 +4501,8 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx) vmcs_write64(POSTED_INTR_NV, POSTED_INTR_VECTOR); vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc))); + + pi_desc_init(vmx); } if (ple_gap) {