From: Karl Mehltretter <kmehltretter@gmail.com>
To: Shuai Xue <xueshuai@linux.alibaba.com>
Cc: palmer@dabbelt.com, pjw@kernel.org, aou@eecs.berkeley.edu,
alex@ghiti.fr, linux-riscv@lists.infradead.org, oleg@redhat.com,
rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com,
peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
namhyung@kernel.org, alexander.shishkin@linux.intel.com,
jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com,
james.clark@linaro.org, jpoimboe@kernel.org, jikos@kernel.org,
mbenes@suse.cz, pmladek@suse.com, joe.lawrence@redhat.com,
shuah@kernel.org, mpdesouza@suse.com, martin@kaiser.cx,
oliver.yang@linux.alibaba.com, zhuo.song@linux.alibaba.com,
jkchen@linux.alibaba.com, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org, live-patching@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v7 00/10] riscv: Add reliable stack unwinding for livepatch
Date: Tue, 10 Nov 2026 07:35:07 +0100 [thread overview]
Message-ID: <avK6oydgmtsa_Sjg@gmail.com> (raw)
In-Reply-To: <20261110013750.36800-1-xueshuai@linux.alibaba.com>
On Tue, Nov 10, 2026 at 09:37:40AM +0100, Shuai Xue wrote:
> Changes since v6:
>
> * Rebase onto the current riscv/for-next (based on 7.4-rc1).
>
> * Fold in Karl Mehltretter's two patches [1] as 1/10 and 2/10. Patch
> 1/10 stops arch_stack_walk() from reporting the walker's own frame as
> the first entry, which corrupts the skip-frame accounting of
> stack_trace_save() users (page_owner, perf), and adjusts
> return_address() level accounting accordingly. Patch 2/10 adds a KUnit
> test for the start frames. Both patches keep their original authorship;
> I added my Reviewed-by/Tested-by and sign-off. I asked Karl on
> 3 November whether he would like to see his patches folded into this
> series; he has not replied so far. Since 8/10 reuses the walker
> extraction from 1/10 for its !CONFIG_FRAME_POINTER fallback, his
> patches are included here to keep the series self-contained.
>
Thank you for folding those patches in. I'm fine with that.
Regards,
Karl
WARNING: multiple messages have this Message-ID (diff)
From: Karl Mehltretter <kmehltretter@gmail.com>
To: Shuai Xue <xueshuai@linux.alibaba.com>
Cc: palmer@dabbelt.com, pjw@kernel.org, aou@eecs.berkeley.edu,
alex@ghiti.fr, linux-riscv@lists.infradead.org, oleg@redhat.com,
rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com,
peterz@infradead.org, mingo@redhat.com, acme@kernel.org,
namhyung@kernel.org, alexander.shishkin@linux.intel.com,
jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com,
james.clark@linaro.org, jpoimboe@kernel.org, jikos@kernel.org,
mbenes@suse.cz, pmladek@suse.com, joe.lawrence@redhat.com,
shuah@kernel.org, mpdesouza@suse.com, martin@kaiser.cx,
oliver.yang@linux.alibaba.com, zhuo.song@linux.alibaba.com,
jkchen@linux.alibaba.com, linux-kernel@vger.kernel.org,
linux-trace-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org, live-patching@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v7 00/10] riscv: Add reliable stack unwinding for livepatch
Date: Tue, 10 Nov 2026 07:35:07 +0100 [thread overview]
Message-ID: <avK6oydgmtsa_Sjg@gmail.com> (raw)
In-Reply-To: <20261110013750.36800-1-xueshuai@linux.alibaba.com>
On Tue, Nov 10, 2026 at 09:37:40AM +0100, Shuai Xue wrote:
> Changes since v6:
>
> * Rebase onto the current riscv/for-next (based on 7.4-rc1).
>
> * Fold in Karl Mehltretter's two patches [1] as 1/10 and 2/10. Patch
> 1/10 stops arch_stack_walk() from reporting the walker's own frame as
> the first entry, which corrupts the skip-frame accounting of
> stack_trace_save() users (page_owner, perf), and adjusts
> return_address() level accounting accordingly. Patch 2/10 adds a KUnit
> test for the start frames. Both patches keep their original authorship;
> I added my Reviewed-by/Tested-by and sign-off. I asked Karl on
> 3 November whether he would like to see his patches folded into this
> series; he has not replied so far. Since 8/10 reuses the walker
> extraction from 1/10 for its !CONFIG_FRAME_POINTER fallback, his
> patches are included here to keep the series self-contained.
>
Thank you for folding those patches in. I'm fine with that.
Regards,
Karl
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next prev parent reply other threads:[~2026-11-10 6:35 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-14 9:26 [PATCH v6 0/7] riscv: Add reliable stack unwinding for livepatch Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:26 ` [PATCH v6 1/7] riscv: stacktrace: Add frame record metadata Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:40 ` sashiko-bot
2026-09-14 9:26 ` [PATCH v6 2/7] riscv: stacktrace: disable KASAN and KCOV instrumentation for stacktrace.o Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:32 ` sashiko-bot
2026-09-14 9:26 ` [PATCH v6 3/7] riscv: ftrace: always preserve s0 in dynamic ftrace register frame Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:32 ` sashiko-bot
2026-09-14 9:26 ` [PATCH v6 4/7] riscv: stacktrace: introduce stack-bound tracking helpers Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:33 ` sashiko-bot
2026-09-14 9:26 ` [PATCH v6 5/7] riscv: stacktrace: switch to frame-pointer based unwinder Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:39 ` sashiko-bot
2026-10-09 18:59 ` Karl Mehltretter
2026-10-09 18:59 ` Karl Mehltretter
2026-10-10 3:38 ` Shuai Xue
2026-10-10 3:38 ` Shuai Xue
2026-10-13 20:18 ` Martin Kaiser
2026-10-13 20:18 ` Martin Kaiser
2026-10-14 13:09 ` Shuai Xue
2026-10-14 13:09 ` Shuai Xue
2026-09-14 9:26 ` [PATCH v6 6/7] riscv: Kconfig: enable HAVE_RELIABLE_STACKTRACE and HAVE_LIVEPATCH Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:38 ` sashiko-bot
2026-09-14 9:26 ` [PATCH v6 7/7] selftests/livepatch: Add RISC-V syscall wrapper prefix Shuai Xue
2026-09-14 9:26 ` Shuai Xue
2026-09-14 9:38 ` sashiko-bot
2026-09-29 7:28 ` [PATCH v6 0/7] riscv: Add reliable stack unwinding for livepatch Martin Kaiser
2026-09-29 7:28 ` Martin Kaiser
2026-10-08 11:42 ` Shuai Xue
2026-10-08 11:42 ` Shuai Xue
2026-10-12 8:44 ` Martin Kaiser
2026-10-12 8:44 ` Martin Kaiser
2026-11-10 1:37 ` [PATCH v7 00/10] " Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:37 ` [PATCH v7 01/10] riscv: stacktrace: do not report the walker's own frame from arch_stack_walk() Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:52 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 02/10] riscv: Add KUnit test for stack trace start frames Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:50 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 03/10] riscv: ftrace: use the frame pointer as the function graph return-address cookie Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:56 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 04/10] riscv: stacktrace: Add frame record metadata Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:54 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 05/10] riscv: stacktrace: disable KASAN and KCOV instrumentation for stacktrace.o Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:42 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 06/10] riscv: ftrace: always preserve s0 in dynamic ftrace register frame Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:42 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 07/10] riscv: stacktrace: introduce stack-bound tracking helpers Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:47 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 08/10] riscv: stacktrace: switch to frame-pointer based unwinder Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 2:20 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 09/10] riscv: Kconfig: enable HAVE_RELIABLE_STACKTRACE and HAVE_LIVEPATCH Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 2:10 ` sashiko-bot
2026-11-10 1:37 ` [PATCH v7 10/10] selftests/livepatch: Add RISC-V syscall wrapper prefix Shuai Xue
2026-11-10 1:37 ` Shuai Xue
2026-11-10 1:48 ` sashiko-bot
2026-11-10 6:35 ` Karl Mehltretter [this message]
2026-11-10 6:35 ` [PATCH v7 00/10] riscv: Add reliable stack unwinding for livepatch Karl Mehltretter
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