linux-kernel - Re: [PATCH v4 01/12] riscv: ftrace: support fastcc in Clang for WITH

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Message-ID: <871ptz940f.fsf@all.your.base.are.belong.to.us>
Date: Thu, 10 Apr 2025 22:05:04 +0200
From: Björn Töpel <bjorn@...nel.org>
To: Andy Chiu <andybnac@...il.com>, linux-riscv@...ts.infradead.org,
 alexghiti@...osinc.com, palmer@...belt.com, Steven Rostedt
 <rostedt@...dmis.org>
Cc: Andy Chiu <andy.chiu@...ive.com>, Evgenii Shatokhin
 <e.shatokhin@...ro.com>, Nathan Chancellor <nathan@...nel.org>,
 Björn Töpel <bjorn@...osinc.com>, Palmer Dabbelt
 <palmer@...osinc.com>, Puranjay
 Mohan <puranjay@...nel.org>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org,  Alexandre Ghiti <alex@...ti.fr>,
 paul.walmsley@...ive.com, samuel.holland@...ive.com
Subject: Re: [PATCH v4 01/12] riscv: ftrace: support fastcc in Clang for
 WITH_ARGS

(Trimming the Cc:-list a bit)

Hi Andy!

Andy Chiu <andybnac@...il.com> writes:

> From: Andy Chiu <andy.chiu@...ive.com>
...

(Oh, if you send another revision, please add a cover, so it's easier to
comment around the full series.)

Thanks a lot for doing the lion part of this series, Andy! With this in
place, *finally* stop machine way of text patching is past us, and we
can move RISC-V out from the 20th century. ;-)

I applied your series, and Steven's series [1] to [2], and ran that on
QEMU (riscv64, ~RVA23), and on Milk-V Jupiter (Spacemit K1) with:
 * CONFIG_FTRACE_STARTUP_TEST
 * ftrace kselftest

No visible regressions, and now the ftrace kselftest can actually
complete! For the series:

Tested-by: Björn Töpel <bjorn@...osinc.com>

[1] https://lore.kernel.org/all/20250409151549.788068911@goodmis.org/
[2] commit 3b07108ada81 ("Merge tag 'linux_kselftest-fixes-6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest")


Björn