Re: [PATCH v1 0/3] iommu/amd: AMD IOMMU performance updates 2017-06-05

Joerg Roedel
2017-06-08T12:43:50Z

On Mon, Jun 05, 2017 at 02:52:03PM -0500, Tom Lendacky wrote:
> This patch series addresses some performance issues in the AMD IOMMU
> driver:
>
> - Reduce the amount of MMIO performed during command submission
> - When the command queue is (near) full, only wait till there is enough
> room for the command rather than wait for the whole queue to be empty
> - Limit the flushing of protection domain TLBs to only the protection
> domains associated with the iova data being freed
>
> This patch series is based on the master branch of the iommu tree.
>
> ---
>
> Tom Lendacky (3):
> iommu/amd: Reduce amount of MMIO when submitting commands
> iommu/amd: Reduce delay waiting for command buffer space

Okay, applied these two and my queue-ring series atop.