linux-kernel - Re: [PATCH v6 06/10] iommu/arm-smmu-v3: Move CD table to arm_smmu

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Date:   Thu, 17 Aug 2023 16:14:01 +0800
From:   Michael Shavit <mshavit@...gle.com>
To:     Nicolin Chen <nicolinc@...dia.com>
Cc:     iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, robin.murphy@....com,
        will@...nel.org, jean-philippe@...aro.org, jgg@...dia.com
Subject: Re: [PATCH v6 06/10] iommu/arm-smmu-v3: Move CD table to arm_smmu_master

On Thu, Aug 17, 2023 at 7:44 AM Nicolin Chen <nicolinc@...dia.com> wrote:
>
> On Wed, Aug 16, 2023 at 09:18:46PM +0800, Michael Shavit wrote:
>
> > Also add the device to the devices list before writing the CD to the
> > table so that SVA is always aware of all the CD tables that need
> > re-writing when it updates a CD.
>
> Can you please elaborate this a bit more?

Yeah I can update the message. Something like:

Also add the device to the devices list before writing the CD to the
table so that SVA will know that the CD needs to be re-written to this
device's CD table as well if it decides to update the CD's ASID
concurrently with this function.