From patchwork Fri Feb 19 03:30:08 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 585003 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 383E614030C for ; Fri, 19 Feb 2016 14:32:37 +1100 (AEDT) Received: from localhost ([::1]:47938 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWbo3-00053x-5T for incoming@patchwork.ozlabs.org; Thu, 18 Feb 2016 22:32:35 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51668) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWbmX-00026a-1D for qemu-devel@nongnu.org; Thu, 18 Feb 2016 22:31:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aWbmW-0000Hq-2q for qemu-devel@nongnu.org; Thu, 18 Feb 2016 22:31:00 -0500 Received: from mx1.redhat.com ([209.132.183.28]:59456) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aWbmV-0000Hd-TU for qemu-devel@nongnu.org; Thu, 18 Feb 2016 22:30:59 -0500 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 83B0C8E919; Fri, 19 Feb 2016 03:30:59 +0000 (UTC) Received: from pxdev.xzpeter.org.com (vpn1-7-234.pek2.redhat.com [10.72.7.234]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1J3UOje028429; Thu, 18 Feb 2016 22:30:52 -0500 From: Peter Xu To: qemu-devel@nongnu.org Date: Fri, 19 Feb 2016 11:30:08 +0800 Message-Id: <1455852618-5224-4-git-send-email-peterx@redhat.com> In-Reply-To: <1455852618-5224-1-git-send-email-peterx@redhat.com> References: <1455852618-5224-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: ehabkost@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, rth@twiddle.net Subject: [Qemu-devel] [PATCH 03/13] intel_iommu: allow queued invalidation for IR X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Queued invalidation is required for IR. This patch add basic support for interrupt cache invalidate requests. Since we currently have no IR cache implemented yet, we can just skip all interrupt cache invalidation requests for now. Signed-off-by: Peter Xu --- hw/i386/intel_iommu.c | 9 +++++++++ hw/i386/intel_iommu_internal.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 347718f..4b0558e 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1400,6 +1400,15 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) } break; + case VTD_INV_DESC_IEC: + VTD_DPRINTF(INV, "Interrupt Entry Cache Invalidation " + "not implemented yet"); + /* + * Since currently we do not cache interrupt entries, we can + * just mark this descriptor as "good" and move on. + */ + break; + default: VTD_DPRINTF(GENERAL, "error: unkonw Invalidation Descriptor type " "hi 0x%"PRIx64 " lo 0x%"PRIx64 " type %"PRIu8, diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index e5f514c..b648e69 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -286,6 +286,8 @@ typedef struct VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_TYPE 0xf #define VTD_INV_DESC_CC 0x1 /* Context-cache Invalidate Desc */ #define VTD_INV_DESC_IOTLB 0x2 +#define VTD_INV_DESC_IEC 0x4 /* Interrupt Entry Cache + Invalidate Descriptor */ #define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descriptor */ #define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descriptor */