Subject: Re: [PATCH] iommu/arm-smmu-v3-sva: Enable Hardware Access and Hardware Dirty bits

From: Jason Gunthorpe <[email-masked]>
Date: Fri, 8 May 2026 10:27:20 -0300

On Fri, May 08, 2026 at 01:12:56PM +0000, Pranjal Shrivastava wrote:

> Are we assuming that if the SMMU IDR presents HTTU capability the MMU
> would also have it? I think an unconditional enablement is risky as we
> may not have system-wide HTTU support.

Oh, yes! That is missing here it should not be turned on unless the
CPU side is also using it.

Jason