From: Vinod Koul <vkoul@kernel.org>
To: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
iommu@lists.linux.dev, Jason Gunthorpe <jgg@nvidia.com>,
Lu Baolu <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
dmaengine@vger.kernel.org, Will Deacon <will@kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
Raj Ashok <ashok.raj@intel.com>,
"Tian, Kevin" <kevin.tian@intel.com>, Yi Liu <yi.l.liu@intel.com>,
"Yu, Fenghua" <fenghua.yu@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Tony Luck <tony.luck@intel.com>,
"Zanussi, Tom" <tom.zanussi@intel.com>,
narayan.ranganathan@intel.com
Subject: Re: [PATCH v7 4/4] dmaengine/idxd: Re-enable kernel workqueue under DMA API
Date: Wed, 24 May 2023 11:14:29 +0530 [thread overview]
Message-ID: <ZG2kPbwMmW4B2PFB@matsya> (raw)
In-Reply-To: <20230523173451.2932113-5-jacob.jun.pan@linux.intel.com>
On 23-05-23, 10:34, Jacob Pan wrote:
> Kernel workqueues were disabled due to flawed use of kernel VA and SVA
> API. Now that we have the support for attaching PASID to the device's
> default domain and the ability to reserve global PASIDs from SVA APIs,
> we can re-enable the kernel work queues and use them under DMA API.
>
> We also use non-privileged access for in-kernel DMA to be consistent
> with the IOMMU settings. Consequently, interrupt for user privilege is
> enabled for work completion IRQs.
Acked-by: Vinod Koul <vkoul@kernel.org>
--
~Vinod
next prev parent reply other threads:[~2023-05-24 5:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-23 17:34 [PATCH v7 0/4] Re-enable IDXD kernel workqueue under DMA API Jacob Pan
2023-05-23 17:34 ` [PATCH v7 1/4] iommu: Generalize PASID 0 for normal DMA w/o PASID Jacob Pan
2023-05-25 6:25 ` Tian, Kevin
2023-06-01 4:31 ` Jacob Pan
2023-06-01 9:26 ` Jean-Philippe Brucker
2023-06-01 14:21 ` Jacob Pan
2023-05-23 17:34 ` [PATCH v7 2/4] iommu: Move global PASID allocation from SVA to core Jacob Pan
2023-05-25 6:27 ` Tian, Kevin
2023-05-25 15:54 ` Jacob Pan
2023-05-23 17:34 ` [PATCH v7 3/4] iommu/vt-d: Add set_dev_pasid callback for dma domain Jacob Pan
2023-05-25 6:56 ` Tian, Kevin
2023-05-26 2:43 ` Baolu Lu
2023-06-14 8:10 ` Tian, Kevin
2023-05-30 17:08 ` Jason Gunthorpe
2023-05-31 4:59 ` Baolu Lu
2023-06-14 8:13 ` Tian, Kevin
2023-05-23 17:34 ` [PATCH v7 4/4] dmaengine/idxd: Re-enable kernel workqueue under DMA API Jacob Pan
2023-05-24 5:44 ` Vinod Koul [this message]
2023-06-01 4:33 ` [PATCH v7 0/4] Re-enable IDXD " Jacob Pan
2023-06-01 14:21 ` Jason Gunthorpe
2023-06-01 15:58 ` Jacob Pan
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