linux-kernel - Re: [PATCH v2 11/11] coco: guest: arm64: Enable vdev DMA after attestation

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Message-ID: <20251120175906.00003560@huawei.com>
Date: Thu, 20 Nov 2025 17:59:06 +0000
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: "Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org>
CC: <linux-coco@...ts.linux.dev>, <kvmarm@...ts.linux.dev>,
	<linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<dan.j.williams@...el.com>, <aik@....com>, <lukas@...ner.de>, Samuel Ortiz
	<sameo@...osinc.com>, Xu Yilun <yilun.xu@...ux.intel.com>, Jason Gunthorpe
	<jgg@...pe.ca>, Suzuki K Poulose <Suzuki.Poulose@....com>, Steven Price
	<steven.price@....com>, Bjorn Helgaas <helgaas@...nel.org>, Catalin Marinas
	<catalin.marinas@....com>, Marc Zyngier <maz@...nel.org>, Will Deacon
	<will@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>
Subject: Re: [PATCH v2 11/11] coco: guest: arm64: Enable vdev DMA after
 attestation

On Mon, 17 Nov 2025 19:30:07 +0530
"Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org> wrote:

> - define SMC_RSI_VDEV_DMA_ENABLE and add wrapper in rsi_cmds.h
> - invoke the new helper from the guest accept path once the device
>   passes attestation, rolling back to TDI_LOCKED on failure
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@...nel.org>
LGTM
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>