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Message-ID: <871qp7tfac.fsf@all.your.base.are.belong.to.us>
Date: Sat, 10 Dec 2022 17:05:47 +0100
From: Björn Töpel <bjorn@...nel.org>
To: Guo Ren <guoren@...nel.org>
Cc: arnd@...db.de, palmer@...osinc.com, tglx@...utronix.de,
peterz@...radead.org, luto@...nel.org, conor.dooley@...rochip.com,
heiko@...ech.de, jszhang@...nel.org, lazyparser@...il.com,
falcon@...ylab.org, chenhuacai@...nel.org, apatel@...tanamicro.com,
atishp@...shpatra.org, palmer@...belt.com,
paul.walmsley@...ive.com, mark.rutland@....com,
zouyipeng@...wei.com, bigeasy@...utronix.de,
David.Laight@...lab.com, chenzhongjin@...wei.com,
greentime.hu@...ive.com, andy.chiu@...ive.com, ben@...adent.org.uk,
linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-riscv@...ts.infradead.org, Guo Ren <guoren@...ux.alibaba.com>
Subject: Re: [PATCH -next V10 04/10] riscv: entry: Convert to generic entry
Guo Ren <guoren@...nel.org> writes:
>> > - Little modification on ret_from_fork & ret_from_kernel_thread
>>
>> What changes?
> ENTRY(ret_from_fork)
> + call schedule_tail
> + move a0, sp /* pt_regs */
> la ra, ret_from_exception
> - tail schedule_tail
> + tail syscall_exit_to_user_mode
> ENDPROC(ret_from_fork)
>
> ENTRY(ret_from_kernel_thread)
> call schedule_tail
> /* Call fn(arg) */
> - la ra, ret_from_exception
> move a0, s1
> - jr s0
> + jalr s0
> + move a0, sp /* pt_regs */
> + la ra, ret_from_exception
> + tail syscall_exit_to_user_mode
> ENDPROC(ret_from_kernel_thread)
Thanks for clearing that up! It's more useful to have a descriptive
text, than just "these functions were changed". (Why instead of what)
Cheers,
Björn
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