From nobody Sun Feb 8 12:37:29 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1493202730803178.50406882610082; Wed, 26 Apr 2017 03:32:10 -0700 (PDT) Received: from localhost ([::1]:54077 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3KEz-0001Nn-DM for importer@patchew.org; Wed, 26 Apr 2017 06:32:09 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3K6l-0002Jv-8M for qemu-devel@nongnu.org; Wed, 26 Apr 2017 06:23:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d3K6g-00020D-Ap for qemu-devel@nongnu.org; Wed, 26 Apr 2017 06:23:39 -0400 Received: from mga14.intel.com ([192.55.52.115]:34289) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d3K6g-0001zT-2N for qemu-devel@nongnu.org; Wed, 26 Apr 2017 06:23:34 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Apr 2017 03:23:32 -0700 Received: from sky-dev.bj.intel.com ([10.238.145.47]) by orsmga002.jf.intel.com with ESMTP; 26 Apr 2017 03:23:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.37,254,1488873600"; d="scan'208";a="79066272" From: "Liu, Yi L" To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Date: Wed, 26 Apr 2017 18:06:33 +0800 Message-Id: <1493201210-14357-4-git-send-email-yi.l.liu@linux.intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> References: <1493201210-14357-1-git-send-email-yi.l.liu@linux.intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 192.55.52.115 Subject: [Qemu-devel] [RFC PATCH 03/20] intel_iommu: add "svm" option X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: tianyu.lan@intel.com, "Liu, Yi L" , kevin.tian@intel.com, yi.l.liu@intel.com, ashok.raj@intel.com, kvm@vger.kernel.org, jean-philippe.brucker@arm.com, jasowang@redhat.com, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Expose "Shared Virtual Memory" to guest by using "svm" option. Also use "svm" to expose SVM related capabilities to guest. e.g. "-device intel-iommu, svm=3Don" Signed-off-by: Liu, Yi L --- hw/i386/intel_iommu.c | 10 ++++++++++ hw/i386/intel_iommu_internal.h | 5 +++++ include/hw/i386/intel_iommu.h | 1 + 3 files changed, 16 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index bf98fa5..ba1e7eb 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2453,6 +2453,7 @@ static Property vtd_properties[] =3D { DEFINE_PROP_BOOL("x-buggy-eim", IntelIOMMUState, buggy_eim, false), DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE), DEFINE_PROP_BOOL("ecs", IntelIOMMUState, ecs, FALSE), + DEFINE_PROP_BOOL("svm", IntelIOMMUState, svm, FALSE), DEFINE_PROP_END_OF_LIST(), }; =20 @@ -2973,6 +2974,15 @@ static void vtd_init(IntelIOMMUState *s) s->ecap |=3D VTD_ECAP_ECS; } =20 + if (s->svm) { + if (!s->ecs || !x86_iommu->pt_supported || !s->caching_mode) { + error_report("Need to set ecs, pt, caching-mode for svm"); + exit(1); + } + s->cap |=3D VTD_CAP_DWD | VTD_CAP_DRD; + s->ecap |=3D VTD_ECAP_PRS | VTD_ECAP_PTS | VTD_ECAP_PASID28; + } + if (s->caching_mode) { s->cap |=3D VTD_CAP_CM; } diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 71a1c1e..f2a7d12 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -191,6 +191,9 @@ #define VTD_ECAP_PT (1ULL << 6) #define VTD_ECAP_MHMV (15ULL << 20) #define VTD_ECAP_ECS (1ULL << 24) +#define VTD_ECAP_PASID28 (1ULL << 28) +#define VTD_ECAP_PRS (1ULL << 29) +#define VTD_ECAP_PTS (0xeULL << 35) =20 /* CAP_REG */ /* (offset >> 4) << 24 */ @@ -207,6 +210,8 @@ #define VTD_CAP_PSI (1ULL << 39) #define VTD_CAP_SLLPS ((1ULL << 34) | (1ULL << 35)) #define VTD_CAP_CM (1ULL << 7) +#define VTD_CAP_DWD (1ULL << 54) +#define VTD_CAP_DRD (1ULL << 55) =20 /* Supported Adjusted Guest Address Widths */ #define VTD_CAP_SAGAW_SHIFT 8 diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index ae21fe5..8981615 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -267,6 +267,7 @@ struct IntelIOMMUState { =20 bool caching_mode; /* RO - is cap CM enabled? */ bool ecs; /* Extended Context Support */ + bool svm; /* Shared Virtual Memory */ =20 dma_addr_t root; /* Current root table pointer */ bool root_extended; /* Type of root table (extended or not= ) */ --=20 1.9.1