Messages in this thread | | | Date | Sun, 21 May 2023 14:29:04 +0800 | Subject | Re: [PATCH v6 4/4] dmaengine/idxd: Re-enable kernel workqueue under DMA API | From | Baolu Lu <> |
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On 5/20/23 4:32 AM, 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. > > Link:https://lore.kernel.org/linux-iommu/20210511194726.GP1002214@nvidia.com/ > Reviewed-by: Dave Jiang<dave.jiang@intel.com> > Reviewed-by: Fenghua Yu<fenghua.yu@intel.com> > Signed-off-by: Jacob Pan<jacob.jun.pan@linux.intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Best regards, baolu
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