From patchwork Thu Sep 12 13:04:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13802110 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 3E5AE1A3BD4 for ; Thu, 12 Sep 2024 13:04:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726146276; cv=none; b=a+mviUS/b2sDe80oJ7jJcMy0oJjZRdjb435CuGGKWkHeyTtjy8p2qOHi2KzgEzd8+M/sfnhEwyUpewvCWMU6YURpcyodDWHRcVhXtR2+3Dx44yTmkiXoYTvdsb/bPCX53uCIlKUMDsA7C9F2st1Y9Xkde1ct1hHRPNAZj29QOTA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726146276; c=relaxed/simple; bh=HEXPUKVegdUM0h4wtk1S1TS1/F6bKadKhWQ9yt0tjpU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=aEFARzzCOKZINN+cGIJZ8il+uX5cW/Kqay4mWRMce/0aiQyua9rnWN6QOBvSLqtLhboeyckMa0U/TcM9YzOqGIJh2YM1yv8Ooh0s4dtbJdX+k6gl7f3+dgsReIRxCdSIl1tEZj+332UMFQMhbtyByUkjHTODvH/mdEo3PR7ov9Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Q/llrId9; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Q/llrId9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1726146274; x=1757682274; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HEXPUKVegdUM0h4wtk1S1TS1/F6bKadKhWQ9yt0tjpU=; b=Q/llrId9Fi8EQzOn2WhERr00iEYvGi4oJlaPqvOlIj6DUszuidEeLrj8 k+Z/Z50DPCB++vnb48ctAso5u98GnqQpwPlb/U1Gxpv3PDWQFjD0TcAmK tP4eYf11w0kD+mySOctW3dLJwOllcDrvxuYczetrmhLCXk2AR6znsfFdf WuPtnZJd+dKRprfhN+b/9h43cqXZrXTdu/w517le/K2blj/z1/BN6Uk9n zFR0Cyh9QQR54IeAVaFiRSzM+pDH8sim3hmSvG0JgXCWYtY9mD44Gknwt Mb/3jjFhp9HbxwcEngF9aHGlyz21r4mfbZD6esAnAbVCUJvokNa/0xpiZ A==; X-CSE-ConnectionGUID: XuBfvP3nQW2I0e0Zid/+VQ== X-CSE-MsgGUID: PNTPy3S2R2O9rLETXKFymg== X-IronPort-AV: E=McAfee;i="6700,10204,11192"; a="36380525" X-IronPort-AV: E=Sophos;i="6.10,223,1719903600"; d="scan'208";a="36380525" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2024 06:04:33 -0700 X-CSE-ConnectionGUID: JN3nqKX1TCiF3gs+m7zdJw== X-CSE-MsgGUID: Y9ufm3nnS3asRTKHVrMoMw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,223,1719903600"; d="scan'208";a="72509910" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orviesa005.jf.intel.com with ESMTP; 12 Sep 2024 06:04:32 -0700 From: Yi Liu To: joro@8bytes.org, jgg@nvidia.com, kevin.tian@intel.com, baolu.lu@linux.intel.com Cc: alex.williamson@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, iommu@lists.linux.dev, zhenzhong.duan@intel.com, linux-kselftest@vger.kernel.org, vasant.hegde@amd.com Subject: [PATCH v2 1/6] iommu: Pass old domain to set_dev_pasid op Date: Thu, 12 Sep 2024 06:04:22 -0700 Message-Id: <20240912130427.10119-2-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240912130427.10119-1-yi.l.liu@intel.com> References: <20240912130427.10119-1-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To support domain replacement for pasid, the underlying iommu driver needs to know the old domain hence be able to clean up the existing attachment. It would be much convenient for iommu layer to pass down the old domain. Otherwise, iommu drivers would need to track domain for pasids by themselves, this would duplicate code among the iommu drivers. Or iommu drivers would rely group->pasid_array to get domain, which may not always the correct one. Suggested-by: Jason Gunthorpe Signed-off-by: Yi Liu --- drivers/iommu/amd/amd_iommu.h | 3 ++- drivers/iommu/amd/pasid.c | 3 ++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 3 ++- drivers/iommu/intel/iommu.c | 6 ++++-- drivers/iommu/intel/svm.c | 3 ++- drivers/iommu/iommu.c | 3 ++- include/linux/iommu.h | 2 +- 7 files changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 2d5945c982bd..271406a45e33 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -51,7 +51,8 @@ struct iommu_domain *amd_iommu_domain_alloc_sva(struct device *dev, struct mm_struct *mm); void amd_iommu_domain_free(struct iommu_domain *dom); int iommu_sva_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid); + struct device *dev, ioasid_t pasid, + struct iommu_domain *old); void amd_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid, struct iommu_domain *domain); diff --git a/drivers/iommu/amd/pasid.c b/drivers/iommu/amd/pasid.c index a68215f2b3e1..77bf5f5f947a 100644 --- a/drivers/iommu/amd/pasid.c +++ b/drivers/iommu/amd/pasid.c @@ -100,7 +100,8 @@ static const struct mmu_notifier_ops sva_mn = { }; int iommu_sva_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct pdom_dev_data *pdom_dev_data; struct protection_domain *sva_pdom = to_pdomain(domain); diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index a7c36654dee5..645da7b69bed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -332,7 +332,8 @@ void arm_smmu_sva_notifier_synchronize(void) } static int arm_smmu_sva_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t id) + struct device *dev, ioasid_t id, + struct iommu_domain *old) { struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_master *master = dev_iommu_priv_get(dev); diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 34006b6e89eb..1a2a5cf4ef60 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4283,7 +4283,8 @@ static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid, } static int intel_iommu_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct dmar_domain *dmar_domain = to_dmar_domain(domain); @@ -4569,7 +4570,8 @@ static int identity_domain_attach_dev(struct iommu_domain *domain, struct device } static int identity_domain_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct intel_iommu *iommu = info->iommu; diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c index 0e3a9b38bef2..5ae1df7598b7 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -194,7 +194,8 @@ static const struct mmu_notifier_ops intel_mmuops = { }; static int intel_svm_set_dev_pasid(struct iommu_domain *domain, - struct device *dev, ioasid_t pasid) + struct device *dev, ioasid_t pasid, + struct iommu_domain *old) { struct device_domain_info *info = dev_iommu_priv_get(dev); struct dmar_domain *dmar_domain = to_dmar_domain(domain); diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 83c8e617a2c5..f3f81c04b8fb 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -3331,7 +3331,8 @@ static int __iommu_set_group_pasid(struct iommu_domain *domain, int ret; for_each_group_device(group, device) { - ret = domain->ops->set_dev_pasid(domain, device->dev, pasid); + ret = domain->ops->set_dev_pasid(domain, device->dev, + pasid, NULL); if (ret) goto err_revert; } diff --git a/include/linux/iommu.h b/include/linux/iommu.h index bd722f473635..32dce80aa7fd 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -642,7 +642,7 @@ struct iommu_ops { struct iommu_domain_ops { int (*attach_dev)(struct iommu_domain *domain, struct device *dev); int (*set_dev_pasid)(struct iommu_domain *domain, struct device *dev, - ioasid_t pasid); + ioasid_t pasid, struct iommu_domain *old); int (*map_pages)(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount,