From: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com,
lenb@kernel.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, mhiramat@kernel.org,
ndesaulniers@google.com, ojeda@kernel.org, peterz@infradead.org,
rafael.j.wysocki@intel.com, revest@chromium.org,
robert.moore@intel.com, rostedt@goodmis.org, will@kernel.org
Subject: Re: [PATCH 1/8] Compiler attributes: GCC function alignment workarounds
Date: Sun, 15 Jan 2023 22:32:38 +0100 [thread overview]
Message-ID: <CANiq72kEow5hBBfzSL7=yihgU1Xm=DiKqeV7A8p8h_qW_f18cg@mail.gmail.com> (raw)
In-Reply-To: <Y8FTXyKkI77nFIMJ@FVFF77S0Q05N>
On Fri, Jan 13, 2023 at 1:49 PM Mark Rutland <mark.rutland@arm.com> wrote:
>
> It turns out that was a red herring; GCC is actually implicitly marking the
> abort() function as cold, and as Linux's implementation happened to be marked
> as weak I assumed that was the culprit.
That and your previous message probably explains probably why I
couldn't reproduce it.
Thanks a lot for all the details -- the `cold` issue is reproducible
since gcc 4.6 at least: https://godbolt.org/z/PoxazzT9T
The `abort` case appears to happen since gcc 8.1.
Cheers,
Miguel
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next prev parent reply other threads:[~2023-01-15 21:34 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 13:58 [PATCH 0/8] arm64/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS Mark Rutland
2023-01-09 13:58 ` [PATCH 1/8] Compiler attributes: GCC function alignment workarounds Mark Rutland
2023-01-09 14:43 ` Miguel Ojeda
2023-01-09 17:06 ` Mark Rutland
2023-01-09 22:35 ` Miguel Ojeda
2023-01-11 18:27 ` Mark Rutland
2023-01-12 11:38 ` Mark Rutland
2023-01-13 12:49 ` Mark Rutland
2023-01-15 21:32 ` Miguel Ojeda [this message]
2023-01-09 13:58 ` [PATCH 2/8] ACPI: Don't build ACPICA with '-Os' Mark Rutland
2023-01-10 13:45 ` Rafael J. Wysocki
2023-01-09 13:58 ` [PATCH 3/8] arm64: Extend support for CONFIG_FUNCTION_ALIGNMENT Mark Rutland
2023-01-10 20:35 ` Peter Zijlstra
2023-01-10 20:43 ` Will Deacon
2023-01-11 11:39 ` Mark Rutland
2023-01-11 11:36 ` Mark Rutland
2023-01-09 13:58 ` [PATCH 4/8] ftrace: Add DYNAMIC_FTRACE_WITH_CALL_OPS Mark Rutland
2023-01-12 6:48 ` Li Huafei
2023-01-12 11:00 ` Mark Rutland
2023-01-13 1:15 ` Li Huafei
2023-01-09 13:58 ` [PATCH 5/8] arm64: insn: Add helpers for BTI Mark Rutland
2023-01-09 13:58 ` [PATCH 6/8] arm64: patching: Add aarch64_insn_write_literal_u64() Mark Rutland
2023-01-09 13:58 ` [PATCH 7/8] arm64: ftrace: Update stale comment Mark Rutland
2023-01-09 13:58 ` [PATCH 8/8] arm64: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS Mark Rutland
2023-01-10 8:55 ` [PATCH 0/8] arm64/ftrace: Add support for DYNAMIC_FTRACE_WITH_CALL_OPS David Laight
2023-01-10 10:31 ` Mark Rutland
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