Re: [PATCH 2/5] iommu/vt-d: Remove WO permissions on second-level paging entries

[Joerg Roedel]

Hi,

On Mon, Mar 08, 2021 at 11:47:46AM -0800, Raj, Ashok wrote:
> That is the primary motivation, given that we have moved to 1st level for
> general IOVA, first level doesn't have a WO mapping. I didn't know enough
> about the history to determine if a WO without a READ is very useful. I
> guess the ZLR was invented to support those cases without a READ in PCIe. I

Okay, please update the commit message and re-send. I guess these
patches are 5.13 stuff. In that case, Baolu can include them into his
pull request later this cycle.

Regards,

	Joerg