linux-kernel - Re: [PATCH] irqdesc: Fail check on early_irq

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Date:   Mon, 13 Nov 2023 00:21:43 +0900
From:   Paran Lee <p4ranlee@...il.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        shjy180909@...il.com, austindh.kim@...il.com
Subject: Re: [PATCH] irqdesc: Fail check on early_irq_init allocation.



On 2023-11-13 오전 12:08, Marc Zyngier wrote:

Thanks for the great feedback Marc!

The review has taught me a lot of things I didn't realized
I'll try to do better in the direction you suggested. To be useful.

> A much better idea would be to *get rid* of early allocation failures
> altogether, by moving all architectures to SPARSE_IRQ and making sure
> that NR_LEGAY_IRQ is always zero, meaning there is nothing to
> allocate. That would be something useful.
> 
> But adding random BUG_ON() based on the dogma that all allocations
> must be checked doesn't bring value to the kernel as a whole.
> 
> 	M.

Thanks so much!

BR
Paran Lee