From: "Jiaxun Yang" <jiaxun.yang@flygoat.com>
To: "Thomas Bogendoerfer" <tsbogend@alpha.franken.de>
Cc: "linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/8] MIPS: Unify low-level debugging functionalities
Date: Thu, 21 Dec 2023 02:21:26 +0000 [thread overview]
Message-ID: <96543d4c-f08e-443d-9a85-9257fc4f4b6c@app.fastmail.com> (raw)
In-Reply-To: <ZYNaFhFp/+q+/Z0Z@alpha.franken.de>
在2023年12月20日十二月 下午9:18，Thomas Bogendoerfer写道：
> On Sun, Oct 29, 2023 at 02:53:01AM +0000, Jiaxun Yang wrote:
>> The plan is to elimiate platform specific early_printk and
>> cps-vec-ns16550 by debug_ll and earlycon.
>
> https://xkcd.com/927/ ?
>
> sorry I don't think that just another new function is good approach.
> Doing this will end up with another method for early debugging and
> all other will stay.
To summarize how are we going to handle low-level debugging after this series:
1. You are lucky enough that the problem happens after console system initialized
and you have stack working: go earlycon, or on very few old platforms with platform
early_printk
2. You are debugging zboot: debug_ll
3. You are debugging SMP bootstrap code like cps-vec: debug_ll
4. Your kernel crashed at the middle of no where before trap_init: debug_ll
Thanks
>
> Thomas.
>
> --
> Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
> good idea. [ RFC1925, 2.3 ]
--
- Jiaxun
prev parent reply other threads:[~2023-12-21 2:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-29 2:53 [PATCH 0/8] MIPS: Unify low-level debugging functionalities Jiaxun Yang
2023-10-29 2:53 ` [PATCH 1/8] MIPS: asm: Move strings to .rodata.str section Jiaxun Yang
2023-10-29 2:53 ` [PATCH 2/8] MIPS: debug: Implement low-level debugging functions Jiaxun Yang
2023-10-29 2:53 ` [PATCH 3/8] MIPS: debug: Hook up DEBUG_LL with early printk Jiaxun Yang
2023-10-29 2:53 ` [PATCH 4/8] MIPS: debug: Provide an early exception vector for low-level debugging Jiaxun Yang
2023-10-29 2:53 ` [PATCH 5/8] MIPS: debug_ll: Add Kconfig symbols for some 8250 uarts Jiaxun Yang
2023-10-29 2:53 ` [PATCH 6/8] MIPS: debug_ll: Implement support for Alchemy uarts Jiaxun Yang
2023-10-29 2:53 ` [PATCH 7/8] MIPS: debug_ll: Implement support for AR933X uarts Jiaxun Yang
2023-10-29 2:53 ` [PATCH 8/8] MIPS: zboot: Convert to use debug_ll facilities Jiaxun Yang
2023-12-01 11:58 ` [PATCH 0/8] MIPS: Unify low-level debugging functionalities Jiaxun Yang
2023-12-20 21:18 ` Thomas Bogendoerfer
2023-12-21 1:40 ` Jiaxun Yang
2023-12-21 2:21 ` Jiaxun Yang [this message]
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