linux-kernel - Re: [PATCH] ARM: support PREEMPT

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Message-ID: <8098e0e4-31c8-a700-7f8b-317b2ead8302@huawei.com>
Date: Mon, 26 Aug 2024 10:40:59 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: Linus Walleij <linus.walleij@...aro.org>
CC: "Russell King (Oracle)" <linux@...linux.org.uk>, <arnd@...db.de>,
	<afd@...com>, <akpm@...ux-foundation.org>, <eric.devolder@...cle.com>,
	<robh@...nel.org>, <vincent.whitchurch@...s.com>, <bhe@...hat.com>,
	<nico@...xnic.net>, <ardb@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<linux-arch@...r.kernel.org>
Subject: Re: [PATCH] ARM: support PREEMPT_DYNAMIC



On 2024/8/23 23:56, Linus Walleij wrote:
> On Wed, Jul 31, 2024 at 12:03 PM Jinjie Ruan <ruanjinjie@...wei.com> wrote:
> 
>> By the way, currently, most architectures have simplified assembly code
>> and implemented its most functions in C functions. Does arm32 have this
>> plan?
> 
> I would turn it around, since I saw that Huawei contributed generic entry
> code for Aarch64, do you folks have a plan to also do patches for ARM32?

Hi, Linus，there are no plans to switch ARM32 to generic entry as it is
already in maintenance mode as Russell said, but we will try to do it if
Russell thinks it makes sense and necessary.

> 
> I have many ARM32 systems and I am happy to help out with reviewing
> and testing if you do.
> 
> Alternatively I might be able to have a look at it, because the entry code
> is right in my work area all the time.

Thank you very much, I'd love your help reviewing and testing the code.

> 
> Yours,
> Linus Walleij