linux-kernel - Re: [PATCH v7 10/20] gunyah: rsc_mgr: Add resource manager RPC core

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <425a8fe9-24b6-26c7-9150-0d3fb76430be@quicinc.com>
Date:   Mon, 12 Dec 2022 15:46:53 -0800
From:   Elliot Berman <quic_eberman@...cinc.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Murali Nalajala <quic_mnalajal@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        "Srivatsa Vaddagiri" <quic_svaddagi@...cinc.com>,
        Carl van Schaik <quic_cvanscha@...cinc.com>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        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>,
        <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 v7 10/20] gunyah: rsc_mgr: Add resource manager RPC core



On 11/21/2022 7:24 AM, Greg Kroah-Hartman wrote:
> On Mon, Nov 21, 2022 at 05:59:59AM -0800, Elliot Berman wrote:
>> +struct gh_rm_rpc {
>> +	struct device *dev;
>> +	struct gunyah_resource tx_ghrsc, rx_ghrsc;
>> +	struct gh_msgq msgq;
>> +	struct mbox_client msgq_client;
>> +	struct gh_rm_connection *active_rx_connection;
>> +	int last_tx_ret;
>> +
>> +	struct idr call_idr;
>> +	struct mutex call_idr_lock;
>> +
>> +	struct mutex send_lock;
>> +
>> +	struct work_struct recv_work;
>> +};
> 
> What handles the reference counting for this object?  Shouldn't this be
> a real 'struct device' and just have a pointer to the parent?  Otherwise
> how do you know when to free this?
> 

Reference counting is not needed on the gh_rm_rpc object because its 
only client (the VM manager) is torn down before the gh_rm_rpc.

Thanks,
Elliot