linux-kernel - Re: [PATCH v8 12/28] gunyah: vm_mgr: Introduce basic VM Manager

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Date:   Mon, 9 Jan 2023 11:38:10 -0800
From:   Elliot Berman <quic_eberman@...cinc.com>
To:     Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>
CC:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Jonathan Corbet <corbet@....net>,
        Murali Nalajala <quic_mnalajal@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Carl van Schaik <quic_cvanscha@...cinc.com>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bagas Sanjaya <bagasdotme@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Sudeep Holla <sudeep.holla@....com>,
        Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v8 12/28] gunyah: vm_mgr: Introduce basic VM Manager



On 1/9/2023 1:05 AM, Srivatsa Vaddagiri wrote:
> * Elliot Berman <quic_eberman@...cinc.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);

Applied all of these.

Thanks,
Elliot