From nobody Fri Dec 19 03:10:50 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11B2A1FBC9C for ; Thu, 13 Mar 2025 05:19:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741843198; cv=none; b=IRBdFhZAyQ3iJH0G3DSu0PmUY0JebT187CuhDWWqhcvKLNGch7q4DN22SJHvE2vaMc1CZRmNqb0N7ZZ9MX3vQxzveAu4ivEo1WWL6DhQivMJVvBWxsSL8ISHzyg3eu9hccVr+bYybCUwhl6HnnMqmiozMP7JxTV6b62O4lbFmDg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741843198; c=relaxed/simple; bh=LalUdJVj91uyCo7aoTOFqO1HMi4LdrZjiQ2EMwM8TAI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=heruI0dFK+7rRaUhpYDgpcM34uiqB28g9OZjE/DJ7wBrCbrYOtGrMSwinQipvePD532wYqj4VuEsSRNUiHkuth3Oo9YDCt97b6UmCjjOI3KAEJbPUe8SPqNK+HdMV8SN2gYWMDcKE9fSIadHrg3L1iTOb4q+EiymrZ4lv1u30q4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=WrxXgBQY; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="WrxXgBQY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1741843197; x=1773379197; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LalUdJVj91uyCo7aoTOFqO1HMi4LdrZjiQ2EMwM8TAI=; b=WrxXgBQYuL04iOw0JGd2NuDEq4pQtytHajSUnJFbqnUs+CUcoz/mLVub /9SCOg9lv1L6xY46YLysNgaJn1rvKLzakUayQRJ0MURal+lBtHrq2ELIF Ek4YrSNe4babMOu69ETQZsn1FvEtzir2LKXv8y95U6ugbrOa5fo5NQ2wG JaIlOIGJnVEwRTGmSVfSMEbYXNANe+gz7eaePwphu4cCpK6PcRhG6l9sl tuBJBLx4+MplFWvjegfLk3Dy9M1WpwG3+KcuOKGTndz1+laxLoagUJQiA 1UVuyRESRiurORnfMYNXc39NXAa0VOO4mV1WLA02uTrjdRkwvsgXiQ4ei Q==; X-CSE-ConnectionGUID: kNTEP3G3Qra+e83hl5ktWA== X-CSE-MsgGUID: zYFcIRrLRieZgGVl9jn2UQ== X-IronPort-AV: E=McAfee;i="6700,10204,11371"; a="54323701" X-IronPort-AV: E=Sophos;i="6.14,243,1736841600"; d="scan'208";a="54323701" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Mar 2025 22:19:57 -0700 X-CSE-ConnectionGUID: N88eXz2nQIGhPJGedYUqvA== X-CSE-MsgGUID: BFCPHzDPTFGKnG4kOxHY6g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,243,1736841600"; d="scan'208";a="151807128" Received: from allen-box.sh.intel.com ([10.239.159.52]) by fmviesa001.fm.intel.com with ESMTP; 12 Mar 2025 22:19:54 -0700 From: Lu Baolu To: Joerg Roedel , Will Deacon , Robin Murphy , Jason Gunthorpe , Kevin Tian Cc: Dave Jiang , Vinod Koul , Fenghua Yu , Zhangfei Gao , Zhou Wang , iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Lu Baolu , Jason Gunthorpe Subject: [PATCH v4 5/8] dmaengine: idxd: Remove unnecessary IOMMU_DEV_FEAT_IOPF Date: Thu, 13 Mar 2025 13:19:50 +0800 Message-ID: <20250313051953.4064532-6-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250313051953.4064532-1-baolu.lu@linux.intel.com> References: <20250313051953.4064532-1-baolu.lu@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The IOMMU_DEV_FEAT_IOPF implementation in the iommu driver is just a no-op. It will also be removed from the iommu driver in the subsequent patch. Remove it to avoid dead code. Signed-off-by: Lu Baolu Acked-by: Vinod Koul Reviewed-by: Dave Jiang Reviewed-by: Fenghua Yu Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Tested-by: Zhangfei Gao Reviewed-by: Yi Liu --- drivers/dma/idxd/init.c | 37 ++++++------------------------------- 1 file changed, 6 insertions(+), 31 deletions(-) diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 1e5038cca22c..d44944195807 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -626,21 +626,6 @@ static void idxd_disable_system_pasid(struct idxd_devi= ce *idxd) idxd->pasid =3D IOMMU_PASID_INVALID; } =20 -static int idxd_enable_sva(struct pci_dev *pdev) -{ - int ret; - - ret =3D iommu_dev_enable_feature(&pdev->dev, IOMMU_DEV_FEAT_IOPF); - if (ret) - return ret; - return 0; -} - -static void idxd_disable_sva(struct pci_dev *pdev) -{ - iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_IOPF); -} - static int idxd_probe(struct idxd_device *idxd) { struct pci_dev *pdev =3D idxd->pdev; @@ -655,17 +640,13 @@ static int idxd_probe(struct idxd_device *idxd) dev_dbg(dev, "IDXD reset complete\n"); =20 if (IS_ENABLED(CONFIG_INTEL_IDXD_SVM) && sva) { - if (idxd_enable_sva(pdev)) { - dev_warn(dev, "Unable to turn on user SVA feature.\n"); - } else { - set_bit(IDXD_FLAG_USER_PASID_ENABLED, &idxd->flags); + set_bit(IDXD_FLAG_USER_PASID_ENABLED, &idxd->flags); =20 - rc =3D idxd_enable_system_pasid(idxd); - if (rc) - dev_warn(dev, "No in-kernel DMA with PASID. %d\n", rc); - else - set_bit(IDXD_FLAG_PASID_ENABLED, &idxd->flags); - } + rc =3D idxd_enable_system_pasid(idxd); + if (rc) + dev_warn(dev, "No in-kernel DMA with PASID. %d\n", rc); + else + set_bit(IDXD_FLAG_PASID_ENABLED, &idxd->flags); } else if (!sva) { dev_warn(dev, "User forced SVA off via module param.\n"); } @@ -703,8 +684,6 @@ static int idxd_probe(struct idxd_device *idxd) err: if (device_pasid_enabled(idxd)) idxd_disable_system_pasid(idxd); - if (device_user_pasid_enabled(idxd)) - idxd_disable_sva(pdev); return rc; } =20 @@ -715,8 +694,6 @@ static void idxd_cleanup(struct idxd_device *idxd) idxd_cleanup_internals(idxd); if (device_pasid_enabled(idxd)) idxd_disable_system_pasid(idxd); - if (device_user_pasid_enabled(idxd)) - idxd_disable_sva(idxd->pdev); } =20 /* @@ -1248,8 +1225,6 @@ static void idxd_remove(struct pci_dev *pdev) free_irq(irq_entry->vector, irq_entry); pci_free_irq_vectors(pdev); pci_iounmap(pdev, idxd->reg_base); - if (device_user_pasid_enabled(idxd)) - idxd_disable_sva(pdev); pci_disable_device(pdev); destroy_workqueue(idxd->wq); perfmon_pmu_remove(idxd); --=20 2.43.0