From nobody Fri Feb 13 14:09:40 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 7CDB7CE7A8B for ; Mon, 25 Sep 2023 02:38:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231835AbjIYCjA (ORCPT ); Sun, 24 Sep 2023 22:39:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231854AbjIYCil (ORCPT ); Sun, 24 Sep 2023 22:38:41 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1FF4FFB for ; Sun, 24 Sep 2023 19:38:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695609514; x=1727145514; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Dlf1dxlHWIpaa3k6WU6MZd1gS+MEcmDGRb+EBcE9Ias=; b=IdDxm0dXTplbiwuM89glbs+rvyvOZ1gntYl4xW0eYr3oZWiUWboomM4s uXCYctdLsKeVt7B4t7KUlxWmzwrqu4801qu2bh0a+eqrGkRdQd+HjgEri EnioOUeeJIiJY4j4bRS+LR8MArvWPxe+gmCCVQ6EQN5hlMjQj2RN+vGfV dTjL8sAVMnKJ2akwTvFdC4avJOyRz/wYyhM7CrqfZZfLwXblfVwmEnRMG 2PspV1mvoKsMMNjSi+9g669TjAT4rRrGUMjlHK41ZOkgpngOwJc2w9YPo 13HrzcNUacY8tv+9L2FEfFEbsuQmtHbZMPhqDdmU9SzbUqNyZOv3IZ0z6 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="360534591" X-IronPort-AV: E=Sophos;i="6.03,174,1694761200"; d="scan'208";a="360534591" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2023 19:38:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="777505069" X-IronPort-AV: E=Sophos;i="6.03,174,1694761200"; d="scan'208";a="777505069" Received: from jingxues-mobl1.ccr.corp.intel.com (HELO tinazhan-desk1.intel.com) ([10.254.214.78]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2023 19:38:31 -0700 From: Tina Zhang To: Jason Gunthorpe , Kevin Tian , Lu Baolu Cc: Michael Shavit , Vasant Hegde , iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Tina Zhang Subject: [PATCH v5 2/6] iommu: Add mm_get_enqcmd_pasid() helper function Date: Mon, 25 Sep 2023 10:38:09 +0800 Message-Id: <20230925023813.575016-3-tina.zhang@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230925023813.575016-1-tina.zhang@intel.com> References: <20230925023813.575016-1-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" mm_get_enqcmd_pasid() is for getting enqcmd pasid value. The motivation is to replace mm->pasid with an iommu private data structure that is introduced in a later patch. Reviewed-by: Lu Baolu Signed-off-by: Tina Zhang Reviewed-by: Jason Gunthorpe --- Change in v2: - Change mm_get_pasid() to mm_get_enqcmd_pasid() arch/x86/kernel/traps.c | 2 +- include/linux/iommu.h | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index c876f1d36a81..832f4413d96a 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -591,7 +591,7 @@ static bool try_fixup_enqcmd_gp(void) if (!mm_valid_pasid(current->mm)) return false; =20 - pasid =3D current->mm->pasid; + pasid =3D mm_get_enqcmd_pasid(current->mm); =20 /* * Did this thread already have its PASID activated? diff --git a/include/linux/iommu.h b/include/linux/iommu.h index c50a769d569a..a4eab6697fe1 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -1189,6 +1189,10 @@ static inline bool mm_valid_pasid(struct mm_struct *= mm) { return mm->pasid !=3D IOMMU_PASID_INVALID; } +static inline u32 mm_get_enqcmd_pasid(struct mm_struct *mm) +{ + return mm->pasid; +} void mm_pasid_drop(struct mm_struct *mm); struct iommu_sva *iommu_sva_bind_device(struct device *dev, struct mm_struct *mm); @@ -1211,6 +1215,10 @@ static inline u32 iommu_sva_get_pasid(struct iommu_s= va *handle) } static inline void mm_pasid_init(struct mm_struct *mm) {} static inline bool mm_valid_pasid(struct mm_struct *mm) { return false; } +static inline u32 mm_get_enqcmd_pasid(struct mm_struct *mm) +{ + return IOMMU_PASID_INVALID; +} static inline void mm_pasid_drop(struct mm_struct *mm) {} #endif /* CONFIG_IOMMU_SVA */ =20 --=20 2.34.1