linux-kernel - [PATCH 0/3] x86/asm: macro improvements in <asm/asm.h>

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Date:   Mon, 10 May 2021 02:09:37 -0700
From:   "H. Peter Anvin" <hpa@...or.com>
To:     Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 0/3] x86/asm: macro improvements in <asm/asm.h>

From: "H. Peter Anvin (Intel)" <hpa@...or.com>

This patchset adds the following improvements to <asm/asm.h>:

1. Makes the __ASM_FORM() macros accept arguments with commas. This allows
   the __ASM_FORM() macros to be used directly in header files for
   macros that can be used from either C or assembly, even for
   instructions that have multiple operands.
2. Add an _ASM_BYTES() macro for the delicate job of hand-crafting
   instructions out of bytes.
3. Replace the _ASM_MK_NOPS() macro in <asm/nops.h> with _ASM_BYTES().

The change to the tools/ directory is mainly because <asm/nops.h> now
depends on <asm/asm.h>.

--- 
 arch/x86/include/asm/asm.h        |  23 ++---
 arch/x86/include/asm/nops.h       |  24 ++---
 tools/arch/x86/include/asm/asm.h  | 189 ++++++++++++++++++++++++++++++++++++++
 tools/arch/x86/include/asm/nops.h |  24 ++---
 4 files changed, 221 insertions(+), 39 deletions(-)