Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935030AbaLLPa5 (ORCPT ); Fri, 12 Dec 2014 10:30:57 -0500 Received: from mga02.intel.com ([134.134.136.20]:36405 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030356AbaLLPZg (ORCPT ); Fri, 12 Dec 2014 10:25:36 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.07,564,1413270000"; d="scan'208";a="622807312" 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: eric.auger@linaro.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, Feng Wu Subject: [v3 12/26] KVM: Initialize VT-d Posted-Interrupts Descriptor Date: Fri, 12 Dec 2014 23:14:46 +0800 Message-Id: <1418397300-10870-13-git-send-email-feng.wu@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1418397300-10870-1-git-send-email-feng.wu@intel.com> References: <1418397300-10870-1-git-send-email-feng.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch initializes the VT-d Posted-Interrupts Descriptor. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) 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) { -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/