linux-kernel - Re: [PATCH RESEND v2 07/12] coco: host: arm64: Add helper to stop and tear down an RMM pdev

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Message-ID: <20251029183437.0000661f@huawei.com>
Date: Wed, 29 Oct 2025 18:34:37 +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 RESEND v2 07/12] coco: host: arm64: Add helper to stop
 and tear down an RMM pdev

On Mon, 27 Oct 2025 15:25:57 +0530
"Aneesh Kumar K.V (Arm)" <aneesh.kumar@...nel.org> wrote:

Repeat the main bit of the title here.

> - describe the RMI_PDEV_STOP/RMI_PDEV_DESTROY SMC IDs and provide
>   wrappers in rmi_cmds.h
> - implement pdev_stop_and_destroy() so the host driver stops the pdev,
>   waits for it to reach RMI_PDEV_STOPPED, destroys it, frees auxiliary
>   granules, and drops the delegated page
> 
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@...nel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>