Messages in this thread | | | Date | Mon, 3 Apr 2023 14:56:49 -0700 | From | Jacob Pan <> | Subject | Re: [PATCH v3 7/7] dmaengine/idxd: Re-enable kernel workqueue under DMA API |
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Hi Fenghua,
On Fri, 31 Mar 2023 23:31:13 +0000, "Yu, Fenghua" <fenghua.yu@intel.com> wrote:
> Hi, Jacob, > > > 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 > > s/That/that/ will fix, for real this time :) you pointed it out before.
> > 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> > > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> > > Other than the typo, > > Reviewed-by: Fenghua Yu <fenghua.yu@intel.com> > > Thanks. > > -Fenghua
Thanks,
Jacob
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