Re: [PATCH v7 4/4] dmaengine/idxd: Re-enable kernel workqueue under DMA API

From: Vinod Koul
Date: Wed May 24 2023 - 01:44:40 EST

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@xxxxxxxxxx>