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 62397CE8D6B for ; Mon, 17 Nov 2025 09:41:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vKvhp-0004b7-NO; Mon, 17 Nov 2025 04:39:29 -0500 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 1vKvhM-0004KI-AK for qemu-devel@nongnu.org; Mon, 17 Nov 2025 04:39:04 -0500 Received: from mgamail.intel.com ([192.198.163.9]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vKvhK-0006H0-G5 for qemu-devel@nongnu.org; Mon, 17 Nov 2025 04:39:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763372339; x=1794908339; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=KhQR5tiHq2nlsQHsdWiG7YU6sxG6zpGR/PSttrNctaw=; b=QufvxFx5woViYxKWP78R7v6N3CysQuD+IHnXe7EfpGcaz0r/N08CrOZB IA+NofrnfNyUYe5mne+01JbpuAjRfWxQpR5rKCR85FMy6D6DEQaSe76rz Q1gEsBFldCp6NJNQJJZosZF4OqRN3RoarTH/51kIwKQ2pGer8OsBQqd0v qJB2H+wWEt2/pm8SvPWxs6t9VsoKp8U0XQmt/cgDfkGiSkAnHz8XK/9F+ 96LH2ZOBfPsjvkQJftWD84YXFuaJk3Hj7cmeON5BKUFUhSovtnxeunL9U C4Svb69YaIwe0M8G2ysIYz6CljxI6+dOfkVt8EJog62fgkoeZOf67TezE A==; X-CSE-ConnectionGUID: kxyA8ExpR7ecrJMZeHHTXg== X-CSE-MsgGUID: Mdp8UtvnRY+WvS0px5Ootg== X-IronPort-AV: E=McAfee;i="6800,10657,11615"; a="76045929" X-IronPort-AV: E=Sophos;i="6.19,311,1754982000"; d="scan'208";a="76045929" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 01:38:57 -0800 X-CSE-ConnectionGUID: /VJjrsnuSkiuZwVLdGPYSg== X-CSE-MsgGUID: ZMkKwW4vSpu9Mn6XB9UoSg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,311,1754982000"; d="scan'208";a="190070893" Received: from unknown (HELO gnr-sp-2s-612.sh.intel.com) ([10.112.230.229]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 01:38:53 -0800 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex@shazbot.org, 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, skolothumtho@nvidia.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 v8 06/23] intel_iommu: Implement get_viommu_flags() callback Date: Mon, 17 Nov 2025 04:37:09 -0500 Message-ID: <20251117093729.1121324-7-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20251117093729.1121324-1-zhenzhong.duan@intel.com> References: <20251117093729.1121324-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=192.198.163.9; 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_flags() callback and expose a request for nesting parent HWPT for now. VFIO uses it to create nesting parent HWPT which is further used to create nested HWPT in vIOMMU. All these will be implemented in following patches. Suggested-by: Yi Liu Signed-off-by: Zhenzhong Duan Reviewed-by: Eric Auger Reviewed-by: Nicolin Chen Reviewed-by: Yi Liu --- 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 ab8037a666..43f3a49769 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" @@ -4696,6 +4697,16 @@ static void vtd_address_space_unmap_in_migration(VTDAddressSpace *as, } } +static uint64_t vtd_get_viommu_flags(void *opaque) +{ + IntelIOMMUState *s = opaque; + uint64_t flags; + + flags = s->fsts ? VIOMMU_FLAG_WANT_NESTING_PARENT : 0; + + return flags; +} + /* Unmap the whole range in the notifier's scope. */ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) { @@ -5354,6 +5365,7 @@ static PCIIOMMUOps vtd_iommu_ops = { .pri_register_notifier = vtd_pri_register_notifier, .pri_unregister_notifier = vtd_pri_unregister_notifier, .pri_request_page = vtd_pri_request_page, + .get_viommu_flags = vtd_get_viommu_flags, }; static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) -- 2.47.1