From patchwork Mon Nov 4 13:18:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13861368 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (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 6D7C479C0 for ; Mon, 4 Nov 2024 13:18:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730726328; cv=none; b=mrddQgfNHaoj6fn4FzhrBufJ4RwfpdF48t7HvMv072PPhW+1U375mYeJUhEe7qe1C0D8gvW3SX9hjBof1GsEiMtewjD8W0rq68R2e81HPU7zBA0VMyNJpunEGLia8haP5YwpZGC0SlZctv2F1kcFMNYluQElVNHrBs2SoAbUQM8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730726328; c=relaxed/simple; bh=//FzTA/bifjMLlL3gQzvpnR1JJLHzU2meJr0MN2TX8Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=uV1m3XuU0uAGAtkRzDY6fUZlRnUfja0wwkq0q8svPjUg7mZO8UMzxr7aDylqi+hzH7kyt9IDIepXSUPKeRhcRR7V4xQ6Pi2ek84yeVg8ssFjx98NoQNP52s6Ekb5IXXlqOZ17gaRM/fQSTNb45NtnmYASPGAZlzXfpyVKXxvMa8= 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=bBfkf16y; arc=none smtp.client-ip=192.198.163.11 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="bBfkf16y" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1730726325; x=1762262325; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=//FzTA/bifjMLlL3gQzvpnR1JJLHzU2meJr0MN2TX8Q=; b=bBfkf16yiE8gXR8B3NYD8Knl4B2/19f2xPWKeKgVemUYszmXhJsTnRt0 M9PcbY33h2HyNGxvRJi6oEFlEyjPnZwRTEgsQC0jdTeKLID4t6ClCWdhf tPP+lJ1LQBCWg0SBhc+Z9QgxQPm3LrNzj93l6e0t2aPgpTMb6B5UVZ5A6 4lnAwtvh+0S2vo7t3wZJOMYYeCb6akxLjUFV7qhui8Yyy318WcbIK2cfS NbX6HqaYJwfJtAcFypLfmaYE+OlvQlRapUuZVAf0hOUZaTSSnuGKR0GiX 7INFyVX7e6v5D2Z2XioduGgXqg+sYykmneVLai1SRhH+0Je6KKYbWx4y/ A==; X-CSE-ConnectionGUID: wNyG/gZeTBSlq1oYR6Y/og== X-CSE-MsgGUID: CaDq6d7QToijs5jy3cTmJQ== X-IronPort-AV: E=McAfee;i="6700,10204,11246"; a="41003700" X-IronPort-AV: E=Sophos;i="6.11,257,1725346800"; d="scan'208";a="41003700" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Nov 2024 05:18:45 -0800 X-CSE-ConnectionGUID: s2xaIZQcRUKhhOwDu5TVHA== X-CSE-MsgGUID: DlfFNN2LQM2Erfj2LyVTyw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,257,1725346800"; d="scan'208";a="83999465" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmviesa010.fm.intel.com with ESMTP; 04 Nov 2024 05:18:44 -0800 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, kvm@vger.kernel.org, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, iommu@lists.linux.dev, zhenzhong.duan@intel.com, vasant.hegde@amd.com, will@kernel.org Subject: [PATCH v4 01/13] iommu: Pass old domain to set_dev_pasid op Date: Mon, 4 Nov 2024 05:18:30 -0800 Message-Id: <20241104131842.13303-2-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241104131842.13303-1-yi.l.liu@intel.com> References: <20241104131842.13303-1-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: kvm@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 Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Reviewed-by: Lu Baolu Reviewed-by: Nicolin Chen 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/arm/arm-smmu-v3/arm-smmu-v3.c | 3 ++- drivers/iommu/intel/iommu.c | 6 ++++-- drivers/iommu/intel/svm.c | 3 ++- drivers/iommu/iommu.c | 3 ++- include/linux/iommu.h | 2 +- 8 files changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/iommu/amd/amd_iommu.h b/drivers/iommu/amd/amd_iommu.h index 38509e1019e9..1bef5d55b2f9 100644 --- a/drivers/iommu/amd/amd_iommu.h +++ b/drivers/iommu/amd/amd_iommu.h @@ -53,7 +53,8 @@ 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 0657b9373be5..d1dfc745f55e 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/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 826db8894fb7..a40681f8c348 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2856,7 +2856,8 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev) } static int arm_smmu_s1_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 e860bc9439a2..86000901de46 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4287,7 +4287,8 @@ 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); @@ -4573,7 +4574,8 @@ 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 078d1e32a24e..3b5e3da24f19 100644 --- a/drivers/iommu/intel/svm.c +++ b/drivers/iommu/intel/svm.c @@ -197,7 +197,8 @@ 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 dfc2f9816086..ea6b4a96186d 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -3407,7 +3407,8 @@ 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 42243183e81d..e1c8e92170e9 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -640,7 +640,7 @@ 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,