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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


             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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