netdev - Re: [PATCH v12 11/23] cxl: define a driver interface for HPA free space enumeration

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Message-ID: <1989d6b4-905c-4784-ba68-5a0e97ecaeab@amd.com>
Date: Mon, 14 Apr 2025 14:14:49 +0100
From: Alejandro Lucero Palau <alucerop@....com>
To: Dave Jiang <dave.jiang@...el.com>, alejandro.lucero-palau@....com,
 linux-cxl@...r.kernel.org, netdev@...r.kernel.org, dan.j.williams@...el.com,
 edward.cree@....com, davem@...emloft.net, kuba@...nel.org,
 pabeni@...hat.com, edumazet@...gle.com
Subject: Re: [PATCH v12 11/23] cxl: define a driver interface for HPA free
 space enumeration


On 4/11/25 22:30, Dave Jiang wrote:
>
> On 3/31/25 7:45 AM, alejandro.lucero-palau@....com wrote:
>> From: Alejandro Lucero <alucerop@....com>
>>
>>
>> +	if (!root) {
>> +		dev_dbg(&endpoint->dev, "endpoint can not be related to a root port\n");
>> +		return ERR_PTR(-ENXIO);
>> +	}
>> +
>> +	root_port = &root->port;
>> +	down_read(&cxl_region_rwsem);
>> +	device_for_each_child(&root_port->dev, &ctx, find_max_hpa);> +	up_read(&cxl_region_rwsem);
> Since we are moving new code to guard(),
>
> scoped_guard(rwsem_read, &cxl_region_rwsem)
> 	device_for_each_child(&root_port->dev, &ctx, find_max_hpa);
>
> DJ


I'll do.

Thanks