From nobody Tue Feb 10 04:12:47 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE0C5EB64D9 for ; Fri, 7 Jul 2023 01:35:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231978AbjGGBfW (ORCPT ); Thu, 6 Jul 2023 21:35:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231921AbjGGBfQ (ORCPT ); Thu, 6 Jul 2023 21:35:16 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 509A51FEA for ; Thu, 6 Jul 2023 18:35:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1688693712; x=1720229712; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=eBd7C5+K4RvrvJS52RC+bdvbj/BI96OctjrNMXfnImA=; b=nGBR/EbTzL/yTpcBukdROfD2zoHTn/wUCgYJkjQnggTkE820TsLdBEYm n22giaZIetQb3TVEs6Ln+gTWZK7GKAQmgPuqhnDaF7i4Hp/MlFozv62K1 kb7/nGvJ2FR+0LVoNhc+9kA74ufvmgUUb/dNtYFBpqrfiUsIoZn57rwuO ZodWQUY4ZEcRxxJfP72E5gg7IUZXNC3cKVq3HnJbebmofsoGH8rIjE0cx WpvCmjdzaP0YJYcPnw5bkiZZV2kGqqrY1XzgEbPS83jEc7SfM5X3IL2bG sjzhdJFLw47ZcHYuXeC+noTXCSH5axoSEEamm+stI6wiTKRU0gxeIybBY g==; X-IronPort-AV: E=McAfee;i="6600,9927,10763"; a="429832288" X-IronPort-AV: E=Sophos;i="6.01,187,1684825200"; d="scan'208";a="429832288" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2023 18:35:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10763"; a="893791346" X-IronPort-AV: E=Sophos;i="6.01,187,1684825200"; d="scan'208";a="893791346" Received: from fengj-mobl.ccr.corp.intel.com (HELO tinazhan-desk1.www.tendawifi.com) ([10.254.210.124]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jul 2023 18:35:08 -0700 From: Tina Zhang To: Jason Gunthorpe , Kevin Tian , Joerg Roedel , Will Deacon , Lu Baolu , Michael Shavit Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Tina Zhang Subject: [RFC PATCH 4/6] mm: Add iommu_mm field to mm_struct Date: Fri, 7 Jul 2023 09:34:39 +0800 Message-Id: <20230707013441.365583-5-tina.zhang@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230707013441.365583-1-tina.zhang@intel.com> References: <20230707013441.365583-1-tina.zhang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The iommu_mm field has all the information needed for managing sva domain 1:1 with mm pasid. Add it to the mm_struct as the sva-related field and use default_iommu_mm to initialize init_mm pasid. Signed-off-by: Tina Zhang --- include/linux/mm_types.h | 2 ++ mm/init-mm.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 306a3d1a0fa65..bb00caa078335 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -581,6 +581,7 @@ struct mm_cid { #endif =20 struct kioctx_table; +struct iommu_mm_data; struct mm_struct { struct { struct maple_tree mm_mt; @@ -773,6 +774,7 @@ struct mm_struct { =20 #ifdef CONFIG_IOMMU_SVA u32 pasid; + struct iommu_mm_data *iommu_mm; #endif #ifdef CONFIG_KSM /* diff --git a/mm/init-mm.c b/mm/init-mm.c index efa97b57acfd8..c43b7d0347312 100644 --- a/mm/init-mm.c +++ b/mm/init-mm.c @@ -44,6 +44,7 @@ struct mm_struct init_mm =3D { .cpu_bitmap =3D CPU_BITS_NONE, #ifdef CONFIG_IOMMU_SVA .pasid =3D IOMMU_PASID_INVALID, + .iommu_mm =3D &default_iommu_mm, #endif INIT_MM_CONTEXT(init_mm) }; --=20 2.34.1