linux-kernel - Re: [RFC PATCH v1 13/38] coco: host: arm64: Create a PDEV with rmm

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Message-ID: <20250804222812.GA3644946@bhelgaas>
Date: Mon, 4 Aug 2025 17:28:12 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
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,
	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>,
	Catalin Marinas <catalin.marinas@....com>,
	Marc Zyngier <maz@...nel.org>, Will Deacon <will@...nel.org>,
	Oliver Upton <oliver.upton@...ux.dev>
Subject: Re: [RFC PATCH v1 13/38] coco: host: arm64: Create a PDEV with rmm

On Mon, Jul 28, 2025 at 07:21:50PM +0530, Aneesh Kumar K.V (Arm) wrote:
> Create the realm physical device with RMM.

> +++ b/drivers/virt/coco/arm-cca-host/arm-cca.c
> @@ -124,7 +124,15 @@ static int cca_tsm_connect(struct pci_dev *pdev)
>  	rc = tsm_ide_stream_register(pdev, ide);
>  	if (rc)
>  		goto err_tsm;
> -
> +	/*
> +	 * Take a module reference so that we won't call unregister
> +	 * without rme_unasign_device

s/rme_unasign_device/rme_unassign/

> +	 */
> +	if (!try_module_get(THIS_MODULE)) {
> +		rc = -ENXIO;
> +		goto err_tsm;
> +	}
> +	rme_asign_device(pdev);

s/rme_asign_device/rme_assign_device/