From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org, mark.rutland@arm.com,
linux-kernel@vger.kernel.org, linux-toolchains@vger.kernel.org
Subject: Re: [PATCH] linkage: Fix issue with missing symbol size
Date: Fri, 29 Apr 2022 13:12:49 -0700 [thread overview]
Message-ID: <20220429201249.5hjcutds4wmkhemr@treble> (raw)
In-Reply-To: <20220429091859.GS2731@worktop.programming.kicks-ass.net>
On Fri, Apr 29, 2022 at 11:18:59AM +0200, Peter Zijlstra wrote:
>
> Occasionally, typically when a function doesn't end with 'ret', an
> alias on that function will have 0 size.
>
> The difference between what GCC generates and our linkage magic, is
> that GCC doesn't appear to provide .size for the alias'ed symbol at
> all. And indeed, removing this directive cures the issue.
>
> Additionally, GCC also doesn't emit .type for alias symbols either, so
> also omit that.
>
> Fixes: e0891269a8c2 ("linkage: add SYM_FUNC_ALIAS{,_LOCAL,_WEAK}()")
> Suggested-by: Mark Rutland <mark.rutland@arm.com>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
--
Josh
next prev parent reply other threads:[~2022-04-29 20:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-29 9:18 [PATCH] linkage: Fix issue with missing symbol size Peter Zijlstra
2022-04-29 20:12 ` Josh Poimboeuf [this message]
2022-04-29 21:06 ` Fāng-ruì Sòng
2022-05-03 14:30 ` Mark Rutland
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