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Message-ID: <8734sghfya.ffs@tglx>
Date: Sat, 23 Mar 2024 21:05:17 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Tianyang Zhang <zhangtianyang@...ngson.cn>, 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
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
> 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?
Thanks,
tglx
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