Message ID | 1591880064-30638-21-git-send-email-yi.l.liu@intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=ppCK=7Y=nongnu.org=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E8695618 for <patchwork-qemu-devel@patchwork.kernel.org>; Thu, 11 Jun 2020 12:54:33 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88BE320760 for <patchwork-qemu-devel@patchwork.kernel.org>; Thu, 11 Jun 2020 12:54:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88BE320760 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:38500 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org>) id 1jjMj2-0006ih-LP for patchwork-qemu-devel@patchwork.kernel.org; Thu, 11 Jun 2020 08:54:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46444) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <yi.l.liu@intel.com>) id 1jjMd0-0002i1-I9 for qemu-devel@nongnu.org; Thu, 11 Jun 2020 08:48:18 -0400 Received: from mga06.intel.com ([134.134.136.31]:47009) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <yi.l.liu@intel.com>) id 1jjMcw-000814-Mi for qemu-devel@nongnu.org; Thu, 11 Jun 2020 08:48:18 -0400 IronPort-SDR: 7XokgMm5dTaG1fwkaB2nj85oEY4iGlxDKNHVljGkc5JRB1eKwObtypO4WVrejAEnl2VZJe5Df1 kEo47B5OfCmw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jun 2020 05:48:01 -0700 IronPort-SDR: RjUKKYc8y8dsANKwLfm/dIoXQDYHKqSXZ9EIjCSVLZ8Sr2kL+Kvtolir18iXYUDwAwZgqbCTKQ nQG6rkb6W0ZA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,499,1583222400"; d="scan'208";a="447911278" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga005.jf.intel.com with ESMTP; 11 Jun 2020 05:48:00 -0700 From: Liu Yi L <yi.l.liu@intel.com> To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v6 20/25] intel_iommu: do not pass down pasid bind for PASID #0 Date: Thu, 11 Jun 2020 05:54:19 -0700 Message-Id: <1591880064-30638-21-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591880064-30638-1-git-send-email-yi.l.liu@intel.com> References: <1591880064-30638-1-git-send-email-yi.l.liu@intel.com> Received-SPF: pass client-ip=134.134.136.31; envelope-from=yi.l.liu@intel.com; helo=mga06.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 08:48:01 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: jean-philippe@linaro.org, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun <yi.y.sun@linux.intel.com>, Eduardo Habkost <ehabkost@redhat.com>, kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan <jacob.jun.pan@linux.intel.com>, pbonzini@redhat.com, hao.wu@intel.com, Richard Henderson <rth@twiddle.net>, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org> |
Series |
intel_iommu: expose Shared Virtual Addressing to VMs
|
expand
|
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index a8431c2..b113aa5 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1893,6 +1893,16 @@ static int vtd_bind_guest_pasid(IntelIOMMUState *s, VTDBus *vtd_bus, HostIOMMUContext *iommu_ctx; int ret = -1; + if (pasid < VTD_HPASID_MIN) { + /* + * If pasid < VTD_HPASID_MIN, this pasid is not allocated + * from host. No need to pass down the changes on it to host. + * TODO: when IOVA over FLPT is ready, this switch should be + * refined. + */ + return 0; + } + vtd_dev_icx = vtd_bus->dev_icx[devfn]; if (!vtd_dev_icx) { /* means no need to go further, e.g. for emulated devices */