From: Josh Poimboeuf <jpoimboe@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH RFC 0/5] x86/asm: Improve code generation
Date: Tue, 8 Apr 2025 01:21:13 -0700 [thread overview]
Message-ID: <cover.1744098446.git.jpoimboe@kernel.org> (raw)
Some various improvements for inline asm code generation.
The "RFC" is really patches 4 and 5, they propose a more readable format
for alternatives and objtool annotations. Bikeshedding welcome.
If a general format is agreed upon, we could do similar for other
annotations like WARN/BUG, static branches/calls, etc.
Josh Poimboeuf (5):
objtool: Remove ANNOTATE_IGNORE_ALTERNATIVE from CLAC/STAC
objtool, x86/hweight: Remove ANNOTATE_IGNORE_ALTERNATIVE
noinstr: Use asm_inline() in instrumentation_{begin,end}()
x86/alternative: Improve code generation readability
objtool: Improve code generation readability
arch/x86/include/asm/alternative.h | 88 ++++++++++++++++++--------
arch/x86/include/asm/arch_hweight.h | 6 +-
arch/x86/include/asm/smap.h | 12 ++--
include/linux/instrumentation.h | 4 +-
include/linux/objtool.h | 97 ++++++++++++++---------------
tools/objtool/check.c | 30 ++++++++-
6 files changed, 149 insertions(+), 88 deletions(-)
--
2.49.0
next reply other threads:[~2025-04-08 8:21 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-08 8:21 Josh Poimboeuf [this message]
2025-04-08 8:21 ` [PATCH RFC 1/5] objtool: Remove ANNOTATE_IGNORE_ALTERNATIVE from CLAC/STAC Josh Poimboeuf
2025-04-08 18:07 ` Linus Torvalds
2025-04-08 20:45 ` [tip: objtool/urgent] " tip-bot2 for Josh Poimboeuf
2025-04-08 8:21 ` [PATCH RFC 2/5] objtool, x86/hweight: Remove ANNOTATE_IGNORE_ALTERNATIVE Josh Poimboeuf
2025-04-08 8:21 ` [PATCH RFC 3/5] noinstr: Use asm_inline() in instrumentation_{begin,end}() Josh Poimboeuf
2025-04-08 8:30 ` Ingo Molnar
2025-04-08 11:10 ` Uros Bizjak
2025-04-08 16:46 ` Josh Poimboeuf
2025-04-08 8:21 ` [PATCH RFC 4/5] x86/alternative: Improve code generation readability Josh Poimboeuf
2025-04-09 14:38 ` Peter Zijlstra
2025-04-09 17:41 ` Josh Poimboeuf
2025-04-09 18:02 ` Linus Torvalds
2025-04-09 19:51 ` Josh Poimboeuf
2025-04-09 21:20 ` Linus Torvalds
2025-04-09 21:27 ` Josh Poimboeuf
2025-04-09 21:55 ` Josh Poimboeuf
2025-04-16 23:30 ` Josh Poimboeuf
2025-04-08 8:21 ` [PATCH RFC 5/5] objtool: " Josh Poimboeuf
2025-04-09 14:40 ` Peter Zijlstra
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