Re: [PATCH v2 1/1] iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu

On Thu, Jul 23, 2020 at 09:34:37AM +0800, Lu Baolu wrote: > The VT-d spec requires (10.4.4 Global Command Register, TE field) that: > > Hardware implementations supporting DMA draining must drain any in-flight > DMA read/write requests queued within the Root-Complex before completing > the

[PATCH v2 1/1] iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu

The VT-d spec requires (10.4.4 Global Command Register, TE field) that: Hardware implementations supporting DMA draining must drain any in-flight DMA read/write requests queued within the Root-Complex before completing the translation enable command and reflecting the status of the command