linux-kernel - Re: [PATCH 2/2] arm64: Implement HAVE

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Message-ID: <20250313-grinning-giraffe-of-holiness-3dbda1@leitao>
Date: Thu, 13 Mar 2025 11:09:01 -0700
From: Breno Leitao <leitao@...ian.org>
To: Song Liu <song@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-toolchains@...r.kernel.org, live-patching@...r.kernel.org,
	indu.bhagat@...cle.com, puranjay@...nel.org, wnliu@...gle.com,
	irogers@...gle.com, joe.lawrence@...hat.com, jpoimboe@...nel.org,
	mark.rutland@....com, peterz@...radead.org,
	roman.gushchin@...ux.dev, rostedt@...dmis.org, will@...nel.org,
	kernel-team@...a.com, Suraj Jitindar Singh <surajjs@...zon.com>,
	Torsten Duwe <duwe@...e.de>
Subject: Re: [PATCH 2/2] arm64: Implement HAVE_LIVEPATCH

On Fri, Mar 07, 2025 at 05:27:42PM -0800, Song Liu wrote:
> This is largely based on [1] by Suraj Jitindar Singh.
> 
> Test coverage:
> 
> - Passed manual tests with samples/livepatch.
> - Passed all but test-kprobe.sh in selftests/livepatch.
>   test-kprobe.sh is expected to fail, because arm64 doesn't have
>   KPROBES_ON_FTRACE.
> - Passed tests with kpatch-build [2]. (This version includes commits that
>   are not merged to upstream kpatch yet).
> 
> [1] https://lore.kernel.org/all/20210604235930.603-1-surajjs@amazon.com/
> [2] https://github.com/liu-song-6/kpatch/tree/fb-6.13
> Cc: Suraj Jitindar Singh <surajjs@...zon.com>
> Cc: Torsten Duwe <duwe@...e.de>
> Signed-off-by: Song Liu <song@...nel.org>

Tested-by: Breno Leitao <leitao@...ian.org>

PS: I've tested this patchset with the examples from samples/ on a arm64
host, and they worked as expected.

Thanks
--breno