linux-kernel - Re: [PATCH V3] irqchip/loongson-pch-pic: Update interrupt registration policy

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Message-ID: <7418ece8-111a-cb29-0320-e8bc08e2d7f8@loongson.cn>
Date: Mon, 25 Mar 2024 09:54:36 +0800
From: Tianyang Zhang <zhangtianyang@...ngson.cn>
To: Thomas Gleixner <tglx@...utronix.de>, chenhuacai@...nel.org,
 jiaxun.yang@...goat.com
Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
 Baoqi Zhang <zhangbaoqi@...ngson.cn>, Biao Dong <dongbiao@...ngson.cn>
Subject: Re: [PATCH V3] irqchip/loongson-pch-pic: Update interrupt
 registration policy

Hi, Thomas

在 2024/3/24 上午4:05, Thomas Gleixner 写道:
> Tianyang!
>
> On Fri, Mar 22 2024 at 18:14, Tianyang Zhang wrote:
>
> Please do not top-post. See the 'Top-posting' chapter in:
> https://people.kernel.org/tglx/notes-about-netiquette
Sorry, I will carefully read the document
>> Regarding "WHY", my understanding is that a convincing reason is needed
>> to explain the necessity of this patch.
> Yes.
>
>> If so, can the last paragraph "This will be more conducive to fully
>> utilizing existing vectors to support more devices."
>>
>> be considered a simple explanation?
> Kinda, but ideally you describe it in a way that there is context for
> the reader. Like this:
>
>    The fixed mapping between the LS7A interrupt source and the HT
>    interrupt vector prevents the utilization of the full interrupt vector
>    space which limits the number of devices in a system
>
>    Replace the fixed mapping with a dynamic mapping which allocates a
>    vector when an interrupt source is set up. This avoids that unused
>    sources prevent vectors from being used for other devices.
>
> See?
Thank you for your demonstration. I will make the modifications 
according to the requirements
>
> Thanks,
>
>          tglx


Thanks again

             Tianyang