linux-kernel - Re: [PATCH 0/5] Simplify vfio_iommu

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Message-ID: <3d0b2863-bb4f-31e1-d54e-09ddf4762d43@linux.intel.com>
Date:   Tue, 7 Jun 2022 20:42:32 +0800
From:   Baolu Lu <baolu.lu@...ux.intel.com>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     baolu.lu@...ux.intel.com, Nicolin Chen <nicolinc@...dia.com>,
        joro@...tes.org, will@...nel.org, marcan@...can.st,
        sven@...npeter.dev, robin.murphy@....com, robdclark@...il.com,
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        thierry.reding@...il.com, vdumpa@...dia.com, jonathanh@...dia.com,
        cohuck@...hat.com, iommu@...ts.linux-foundation.org,
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Subject: Re: [PATCH 0/5] Simplify vfio_iommu_type1 attach/detach routine

On 2022/6/7 19:58, Jason Gunthorpe wrote:
> On Tue, Jun 07, 2022 at 03:44:43PM +0800, Baolu Lu wrote:
>> On 2022/6/6 14:19, Nicolin Chen wrote:
>>> Worths mentioning the exact match for enforce_cache_coherency is removed
>>> with this series, since there's very less value in doing that since KVM
>>> won't be able to take advantage of it -- this just wastes domain memory.
>>> Instead, we rely on Intel IOMMU driver taking care of that internally.
>>
>> After reading this series, I don't see that Intel IOMMU driver needs any
>> further change to support the new scheme. Did I miss anything?
> 
> You already did it :)

Just as I thought. Thank you!

Best regards,
baolu