From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 98A22C83F26 for ; Tue, 29 Jul 2025 09:22:12 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uggWw-00051f-HB; Tue, 29 Jul 2025 05:21:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uggWK-0004dX-Vt for qemu-devel@nongnu.org; Tue, 29 Jul 2025 05:21:20 -0400 Received: from mgamail.intel.com ([192.198.163.17]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uggWI-0002av-TI for qemu-devel@nongnu.org; Tue, 29 Jul 2025 05:21:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1753780875; x=1785316875; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=H90IjbHFk/C0B72MY53kb+vMeadxug3mnzm1G5/mZdM=; b=W0+C6UOzsxQeQjpJiKjGIIPg0wiJfNOyJli8bAq7fvKB0xIyfLcl/RKH Qz90siFB7vhqu+ZKgG2r6bn7gKVVvKgmGKNXNYvvGAmzniVBdP3dncH8b 4Ll44hv11xRTgoJtopwGkdYv2x0zIy+J+7uloKdG8Anjql0vVXVa1IXjH BV323mEa55U59G7LkBZNPHGiCRhatg/ZLMn+ddmO/O7Cy4Cs5aCSVWzZB ftRCo0uWxDYyxHCZEdCg8hUePlVBHPnWOBoJWse0XW0sFPWSv4yFzofwZ pFzUnMFGN5jODoS4eMEUxULAOaKqys28nBTPDp9R1S2O8MLHYUXadjTtl Q==; X-CSE-ConnectionGUID: DGxCXqoGRxC7/mb62Owi/Q== X-CSE-MsgGUID: hAbUzuIiQTygs/rN1Ab/rQ== X-IronPort-AV: E=McAfee;i="6800,10657,11505"; a="55981863" X-IronPort-AV: E=Sophos;i="6.16,348,1744095600"; d="scan'208";a="55981863" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2025 02:21:12 -0700 X-CSE-ConnectionGUID: mFMAsr4KSTqxGDXwzpKcpg== X-CSE-MsgGUID: qBRVDKr+RRCvZoULea4QLg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,348,1744095600"; d="scan'208";a="162691120" Received: from unknown (HELO gnr-sp-2s-612.sh.intel.com) ([10.112.230.229]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2025 02:21:09 -0700 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, jasowang@redhat.com, peterx@redhat.com, ddutile@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, shameerali.kolothum.thodi@huawei.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan Subject: [PATCH v4 03/20] intel_iommu: Implement get_viommu_cap() callback Date: Tue, 29 Jul 2025 05:20:25 -0400 Message-ID: <20250729092043.785836-4-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250729092043.785836-1-zhenzhong.duan@intel.com> References: <20250729092043.785836-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.17; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Implement get_viommu_cap() callback and expose stage-1 capability for now. VFIO uses it to create nested parent domain which is further used to create nested domain in vIOMMU. All these will be implemented in following patches. Suggested-by: Yi Liu Signed-off-by: Zhenzhong Duan Reviewed-by: Eric Auger --- hw/i386/intel_iommu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index c97953d7a1..178c15e31c 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -24,6 +24,7 @@ #include "qemu/main-loop.h" #include "qapi/error.h" #include "hw/sysbus.h" +#include "hw/iommu.h" #include "intel_iommu_internal.h" #include "hw/pci/pci.h" #include "hw/pci/pci_bus.h" @@ -4420,6 +4421,16 @@ static void vtd_dev_unset_iommu_device(PCIBus *bus, void *opaque, int devfn) vtd_iommu_unlock(s); } +static uint64_t vtd_get_viommu_cap(void *opaque) +{ + IntelIOMMUState *s = opaque; + uint64_t caps; + + caps = s->flts ? VIOMMU_CAP_HW_NESTED : 0; + + return caps; +} + /* Unmap the whole range in the notifier's scope. */ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) { @@ -4850,6 +4861,7 @@ static PCIIOMMUOps vtd_iommu_ops = { .register_iotlb_notifier = vtd_register_iotlb_notifier, .unregister_iotlb_notifier = vtd_unregister_iotlb_notifier, .ats_request_translation = vtd_ats_request_translation, + .get_viommu_cap = vtd_get_viommu_cap, }; static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) -- 2.47.1