Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Mon, 9 Jan 2023 14:35:53 +0530
From:   Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>
To:     Elliot Berman <quic_eberman@quicinc.com>
CC:     Bjorn Andersson <quic_bjorande@quicinc.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Murali Nalajala <quic_mnalajal@quicinc.com>,
        Trilok Soni <quic_tsoni@quicinc.com>,
        Carl van Schaik <quic_cvanscha@quicinc.com>,
        Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Bagas Sanjaya <bagasdotme@gmail.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>,
        Jassi Brar <jassisinghbrar@gmail.com>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Lorenzo Pieralisi <lpieralisi@kernel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-doc@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-acpi@vger.kernel.org>
Subject: Re: [PATCH v8 12/28] gunyah: vm_mgr: Introduce basic VM Manager
Message-ID: <20230109090553.GA1737564@quicinc.com>
Reply-To: Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>
References: <20221219225850.2397345-1-quic_eberman@quicinc.com>
 <20221219225850.2397345-13-quic_eberman@quicinc.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
Content-Disposition: inline
In-Reply-To: <20221219225850.2397345-13-quic_eberman@quicinc.com>
Precedence: bulk

* Elliot Berman <quic_eberman@quicinc.com> [2022-12-19 14:58:33]:

> +config GUNYAH_VM_MANAGER

Any reason why this needs to be a separate config? IOW CONFIG_GUNYAH should
enable VM management functionality also.

> @@ -550,14 +580,29 @@ static int gh_rm_drv_probe(struct platform_device *pdev)
>  	rsc_mgr->msgq_client.rx_callback = gh_rm_msgq_rx_data;
>  	rsc_mgr->msgq_client.tx_done = gh_rm_msgq_tx_done;
>  
> -	return gh_msgq_init(&pdev->dev, &rsc_mgr->msgq, &rsc_mgr->msgq_client,
> +	ret = gh_msgq_init(&pdev->dev, &rsc_mgr->msgq, &rsc_mgr->msgq_client,
>  				&rsc_mgr->tx_ghrsc, &rsc_mgr->rx_ghrsc);

Bail on error here.

[snip]

> +static __must_check struct gunyah_vm *gunyah_vm_alloc(struct gh_rm_rpc *rm)
> +{
> +	struct gunyah_vm *ghvm;
> +	int vmid;
> +
> +	vmid = gh_rm_alloc_vmid(rm, 0);
> +	if (vmid < 0)
> +		return ERR_PTR(vmid);
> +
> +	ghvm = kzalloc(sizeof(*ghvm), GFP_KERNEL);
> +	if (!ghvm)

dealloc_vmid here (as well as few other error paths)?

> +		return ghvm;
> +
> +	get_gh_rm(rm);