From: Yi Liu <yi.l.liu@intel.com>
To: Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
"Jason Gunthorpe" <jgg@nvidia.com>,
Christoph Hellwig <hch@infradead.org>,
Kevin Tian <kevin.tian@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
Dave Jiang <dave.jiang@intel.com>, Vinod Koul <vkoul@kernel.org>
Cc: Eric Auger <eric.auger@redhat.com>,
Jacob jun Pan <jacob.jun.pan@intel.com>,
Zhangfei Gao <zhangfei.gao@linaro.org>,
Zhu Tony <tony.zhu@intel.com>, <iommu@lists.linux.dev>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v10 06/12] iommu/vt-d: Add SVA domain support
Date: Sun, 31 Jul 2022 20:20:36 +0800 [thread overview]
Message-ID: <dd14366b-0b2f-7662-6af9-4ba85848cd9e@intel.com> (raw)
In-Reply-To: <20220705050710.2887204-7-baolu.lu@linux.intel.com>
On 2022/7/5 13:07, Lu Baolu wrote:
> Add support for SVA domain allocation and provide an SVA-specific
> iommu_domain_ops.
>
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
> Tested-by: Tony Zhu <tony.zhu@intel.com>
> ---
> include/linux/intel-iommu.h | 5 ++++
> drivers/iommu/intel/iommu.c | 2 ++
> drivers/iommu/intel/svm.c | 49 +++++++++++++++++++++++++++++++++++++
> 3 files changed, 56 insertions(+)
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
> diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
> index 31e3edc0fc7e..9007428a68f1 100644
> --- a/include/linux/intel-iommu.h
> +++ b/include/linux/intel-iommu.h
> @@ -743,6 +743,7 @@ void intel_svm_unbind(struct iommu_sva *handle);
> u32 intel_svm_get_pasid(struct iommu_sva *handle);
> int intel_svm_page_response(struct device *dev, struct iommu_fault_event *evt,
> struct iommu_page_response *msg);
> +struct iommu_domain *intel_svm_domain_alloc(void);
>
> struct intel_svm_dev {
> struct list_head list;
> @@ -768,6 +769,10 @@ struct intel_svm {
> };
> #else
> static inline void intel_svm_check(struct intel_iommu *iommu) {}
> +static inline struct iommu_domain *intel_svm_domain_alloc(void)
> +{
> + return NULL;
> +}
> #endif
>
> #ifdef CONFIG_INTEL_IOMMU_DEBUGFS
> diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
> index 44016594831d..993a1ce509a8 100644
> --- a/drivers/iommu/intel/iommu.c
> +++ b/drivers/iommu/intel/iommu.c
> @@ -4298,6 +4298,8 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type)
> return domain;
> case IOMMU_DOMAIN_IDENTITY:
> return &si_domain->domain;
> + case IOMMU_DOMAIN_SVA:
> + return intel_svm_domain_alloc();
> default:
> return NULL;
> }
> diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
> index d04880a291c3..7d4f9d173013 100644
> --- a/drivers/iommu/intel/svm.c
> +++ b/drivers/iommu/intel/svm.c
> @@ -931,3 +931,52 @@ int intel_svm_page_response(struct device *dev,
> mutex_unlock(&pasid_mutex);
> return ret;
> }
> +
> +static int intel_svm_set_dev_pasid(struct iommu_domain *domain,
> + struct device *dev, ioasid_t pasid)
> +{
> + struct device_domain_info *info = dev_iommu_priv_get(dev);
> + struct intel_iommu *iommu = info->iommu;
> + struct mm_struct *mm = domain->mm;
> + struct iommu_sva *sva;
> + int ret = 0;
> +
> + mutex_lock(&pasid_mutex);
> + sva = intel_svm_bind_mm(iommu, dev, mm);
> + if (IS_ERR(sva))
> + ret = PTR_ERR(sva);
> + mutex_unlock(&pasid_mutex);
> +
> + return ret;
> +}
> +
> +static void intel_svm_block_dev_pasid(struct iommu_domain *domain,
> + struct device *dev, ioasid_t pasid)
> +{
> + mutex_lock(&pasid_mutex);
> + intel_svm_unbind_mm(dev, pasid);
> + mutex_unlock(&pasid_mutex);
> +}
> +
> +static void intel_svm_domain_free(struct iommu_domain *domain)
> +{
> + kfree(to_dmar_domain(domain));
> +}
> +
> +static const struct iommu_domain_ops intel_svm_domain_ops = {
> + .set_dev_pasid = intel_svm_set_dev_pasid,
> + .block_dev_pasid = intel_svm_block_dev_pasid,
> + .free = intel_svm_domain_free,
> +};
> +
> +struct iommu_domain *intel_svm_domain_alloc(void)
> +{
> + struct dmar_domain *domain;
> +
> + domain = kzalloc(sizeof(*domain), GFP_KERNEL);
> + if (!domain)
> + return NULL;
> + domain->domain.ops = &intel_svm_domain_ops;
> +
> + return &domain->domain;
> +}
--
Regards,
Yi Liu
next prev parent reply other threads:[~2022-07-31 12:20 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-05 5:06 [PATCH v10 00/12] iommu: SVA and IOPF refactoring Lu Baolu
2022-07-05 5:06 ` [PATCH v10 01/12] iommu: Add max_pasids field in struct iommu_device Lu Baolu
2022-07-23 13:57 ` Jason Gunthorpe
2022-07-31 11:54 ` Yi Liu
2022-07-31 13:33 ` Baolu Lu
2022-07-05 5:07 ` [PATCH v10 02/12] iommu: Add max_pasids field in struct dev_iommu Lu Baolu
2022-07-23 14:02 ` Jason Gunthorpe
2022-07-31 11:55 ` Yi Liu
2022-07-05 5:07 ` [PATCH v10 03/12] iommu: Remove SVM_FLAG_SUPERVISOR_MODE support Lu Baolu
2022-07-31 12:01 ` Yi Liu
2022-07-31 13:39 ` Baolu Lu
2022-07-05 5:07 ` [PATCH v10 04/12] iommu: Add attach/detach_dev_pasid iommu interface Lu Baolu
2022-07-07 1:51 ` Tian, Kevin
2022-07-23 14:11 ` Jason Gunthorpe
2022-07-24 7:03 ` Baolu Lu
2022-07-25 14:40 ` Jason Gunthorpe
2022-07-26 6:23 ` Baolu Lu
2022-07-26 13:57 ` Jason Gunthorpe
2022-07-27 3:20 ` Tian, Kevin
2022-07-27 11:53 ` Jason Gunthorpe
2022-07-28 3:06 ` Tian, Kevin
2022-07-28 11:59 ` Jason Gunthorpe
2022-07-29 2:49 ` Baolu Lu
2022-07-29 2:56 ` Tian, Kevin
2022-07-29 3:20 ` Baolu Lu
2022-07-29 4:22 ` Tian, Kevin
2022-07-30 6:17 ` Baolu Lu
2022-07-29 2:51 ` Tian, Kevin
2022-07-29 12:22 ` Jason Gunthorpe
2022-07-30 6:23 ` Baolu Lu
2022-07-28 2:44 ` Baolu Lu
2022-07-28 6:27 ` Baolu Lu
2022-08-02 2:19 ` Baolu Lu
2022-08-02 12:37 ` Jason Gunthorpe
2022-08-03 13:07 ` Baolu Lu
2022-08-03 19:03 ` Jason Gunthorpe
2022-08-04 2:03 ` Tian, Kevin
2022-08-04 2:42 ` Baolu Lu
2022-07-24 7:23 ` Baolu Lu
2022-07-24 8:39 ` Baolu Lu
2022-07-24 9:13 ` Baolu Lu
2022-07-25 7:46 ` Tian, Kevin
2022-07-25 10:11 ` Baolu Lu
2022-07-31 12:10 ` Yi Liu
2022-07-05 5:07 ` [PATCH v10 05/12] iommu: Add IOMMU SVA domain support Lu Baolu
2022-07-07 1:52 ` Tian, Kevin
2022-07-07 3:01 ` Baolu Lu
2022-07-23 14:15 ` Jason Gunthorpe
2022-07-31 12:19 ` Yi Liu
2022-07-05 5:07 ` [PATCH v10 06/12] iommu/vt-d: Add " Lu Baolu
2022-07-23 14:16 ` Jason Gunthorpe
2022-07-31 12:20 ` Yi Liu [this message]
2022-07-05 5:07 ` [PATCH v10 07/12] arm-smmu-v3/sva: " Lu Baolu
2022-07-23 14:20 ` Jason Gunthorpe
2022-07-24 11:58 ` Baolu Lu
2022-07-05 5:07 ` [PATCH v10 08/12] iommu/sva: Refactoring iommu_sva_bind/unbind_device() Lu Baolu
2022-07-05 17:43 ` Jean-Philippe Brucker
2022-07-07 1:56 ` Tian, Kevin
2022-07-07 3:02 ` Baolu Lu
2022-07-23 14:26 ` Jason Gunthorpe
2022-07-24 13:48 ` Baolu Lu
2022-07-25 7:39 ` Jean-Philippe Brucker
2022-07-25 8:02 ` Tian, Kevin
2022-07-25 8:47 ` Jean-Philippe Brucker
2022-07-25 9:33 ` Baolu Lu
2022-07-25 9:52 ` Jean-Philippe Brucker
2022-07-25 14:46 ` Jason Gunthorpe
2022-07-25 7:50 ` Tian, Kevin
2022-07-25 10:22 ` Baolu Lu
2022-07-25 14:47 ` Jason Gunthorpe
2022-07-26 8:47 ` Baolu Lu
2022-07-31 12:36 ` Yi Liu
2022-07-31 13:45 ` Baolu Lu
2022-07-31 12:55 ` Yi Liu
2022-07-31 13:51 ` Baolu Lu
2022-07-05 5:07 ` [PATCH v10 09/12] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-07-23 14:27 ` Jason Gunthorpe
2022-07-31 12:38 ` Yi Liu
2022-07-05 5:07 ` [PATCH v10 10/12] iommu: Prepare IOMMU domain for IOPF Lu Baolu
2022-07-07 1:58 ` Tian, Kevin
2022-07-23 14:33 ` Jason Gunthorpe
2022-07-24 14:04 ` Baolu Lu
2022-07-25 14:49 ` Jason Gunthorpe
2022-07-31 12:50 ` Yi Liu
2022-07-31 13:47 ` Baolu Lu
2022-07-05 5:07 ` [PATCH v10 11/12] iommu: Per-domain I/O page fault handling Lu Baolu
2022-07-07 2:06 ` Tian, Kevin
2022-07-23 14:34 ` Jason Gunthorpe
2022-07-05 5:07 ` [PATCH v10 12/12] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
2022-07-23 14:34 ` Jason Gunthorpe
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