Linux Documentation
 help / color / mirror / Atom feed
From: Randy Dunlap <rdunlap@infradead.org>
To: Avi Radinsky <avi.radinsky@tennr.com>,
	palmer@dabbelt.com, pjw@kernel.org, aou@eecs.berkeley.edu,
	alex@ghiti.fr, corbet@lwn.net
Cc: linux-riscv@lists.infradead.org, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Documentation: riscv: cmodx: fix typos
Date: Wed, 29 Apr 2026 15:38:46 -0700	[thread overview]
Message-ID: <bae95436-6685-4fe7-b795-feba4192cb58@infradead.org> (raw)
In-Reply-To: <391d16fb-5f11-45fa-8f3b-1debe095695e@tennr.com>



On 4/29/26 3:35 PM, Avi Radinsky wrote:
> Fix typos in the dynamic ftrace section: atmoic -> atomic (twice),
> pacthable -> patchable, derect -> directed.
> 
> Signed-off-by: Avi Radinsky <avi.radinsky@tennr.com>

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Thanks.

> ---
>  Documentation/arch/riscv/cmodx.rst | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/arch/riscv/cmodx.rst b/Documentation/arch/riscv/cmodx.rst
> index 40ba53bed..cbfa812a1 100644
> --- a/Documentation/arch/riscv/cmodx.rst
> +++ b/Documentation/arch/riscv/cmodx.rst
> @@ -21,13 +21,13 @@ call at each patchable function entry, and patches it dynamically at runtime to
>  enable or disable the redirection. In the case of RISC-V, 2 instructions,
>  AUIPC + JALR, are required to compose a function call. However, it is impossible
>  to patch 2 instructions and expect that a concurrent read-side executes them
> -without a race condition. This series makes atmoic code patching possible in
> +without a race condition. This series makes atomic code patching possible in
>  RISC-V ftrace. Kernel preemption makes things even worse as it allows the old
>  state to persist across the patching process with stop_machine().
>  
>  In order to get rid of stop_machine() and run dynamic ftrace with full kernel
>  preemption, we partially initialize each patchable function entry at boot-time,
> -setting the first instruction to AUIPC, and the second to NOP. Now, atmoic
> +setting the first instruction to AUIPC, and the second to NOP. Now, atomic
>  patching is possible because the kernel only has to update one instruction.
>  According to Ziccif, as long as an instruction is naturally aligned, the ISA
>  guarantee an  atomic update.
> @@ -36,8 +36,8 @@ By fixing down the first instruction, AUIPC, the range of the ftrace trampoline
>  is limited to +-2K from the predetermined target, ftrace_caller, due to the lack
>  of immediate encoding space in RISC-V. To address the issue, we introduce
>  CALL_OPS, where an 8B naturally align metadata is added in front of each
> -pacthable function. The metadata is resolved at the first trampoline, then the
> -execution can be derect to another custom trampoline.
> +patchable function. The metadata is resolved at the first trampoline, then the
> +execution can be directed to another custom trampoline.
>  
>  CMODX in the User Space
>  -----------------------

-- 
~Randy

  reply	other threads:[~2026-04-29 22:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-29 22:35 [PATCH] Documentation: riscv: cmodx: fix typos Avi Radinsky
2026-04-29 22:38 ` Randy Dunlap [this message]
2026-04-30 20:08 ` Paul Walmsley

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=bae95436-6685-4fe7-b795-feba4192cb58@infradead.org \
    --to=rdunlap@infradead.org \
    --cc=alex@ghiti.fr \
    --cc=aou@eecs.berkeley.edu \
    --cc=avi.radinsky@tennr.com \
    --cc=corbet@lwn.net \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=palmer@dabbelt.com \
    --cc=pjw@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox