linux-kernel - Re: [PATCH RFC v9 47/51] iommu/amd: Add IOMMU_SNP

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Message-ID: <657e86cb-76b2-ab2b-5ce3-f53ec4341f08@amd.com>
Date:   Thu, 7 Sep 2023 17:31:35 +0700
From:   "Suthikulpanit, Suravee" <suravee.suthikulpanit@....com>
To:     Michael Roth <michael.roth@....com>, kvm@...r.kernel.org
Cc:     linux-coco@...ts.linux.dev, linux-mm@...ck.org,
        linux-crypto@...r.kernel.org, x86@...nel.org,
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        zhi.a.wang@...el.com
Subject: Re: [PATCH RFC v9 47/51] iommu/amd: Add IOMMU_SNP_SHUTDOWN support

Mike / Ashish

FYI, you might need to start including the change from this patch

https://lore.kernel.org/linux-iommu/ZPiAUx9Qysw0AKNq@ziepe.ca/T/

in this series since Christoph would like to remove the code from the 
current upstream, and re-introduce the change within this series instead.

Regards,
Suravee

On 6/12/2023 11:25 AM, Michael Roth wrote:
> From: Ashish Kalra<ashish.kalra@....com>
> 
> Add a new IOMMU API interface amd_iommu_snp_disable() to transition
> IOMMU pages to Hypervisor state from Reclaim state after SNP_SHUTDOWN_EX
> command. Invoke this API from the CCP driver after SNP_SHUTDOWN_EX
> command.
> 
> Signed-off-by: Ashish Kalra<ashish.kalra@....com>
> Signed-off-by: Michael Roth<michael.roth@....com>