linux-kernel - [PATCH 1/4] x86/asm: Allow to pass macros to __ASM

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Message-ID: <20220510133036.46767-2-mheyne@amazon.de>
Date:   Tue, 10 May 2022 13:30:30 +0000
From:   Maximilian Heyne <mheyne@...zon.de>
To:     unlisted-recipients:; (no To-header on input)
CC:     Masami Hiramatsu <mhiramat@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Juergen Gross <jgross@...e.com>, <x86@...nel.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Ingo Molnar <mingo@...nel.org>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Borislav Petkov <bp@...en8.de>,
        <xen-devel@...ts.xenproject.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Maximilian Heyne <mheyne@...zon.de>, <stable@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
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        Namhyung Kim <namhyung@...nel.org>,
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Subject: [PATCH 1/4] x86/asm: Allow to pass macros to __ASM_FORM()

From: Masami Hiramatsu <mhiramat@...nel.org>

commit f7919fd943abf0c77aed4441ea9897a323d132f5 upstream

Use __stringify() at __ASM_FORM() so that user can pass
code including macros to __ASM_FORM().

Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Juergen Gross <jgross@...e.com>
Cc: x86@...nel.org
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Stefano Stabellini <sstabellini@...nel.org>
Cc: Andrew Cooper <andrew.cooper3@...rix.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: xen-devel@...ts.xenproject.org
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Link: https://lkml.kernel.org/r/156777562873.25081.2288083344657460959.stgit@devnote2
Signed-off-by: Maximilian Heyne <mheyne@...zon.de>
Cc: stable@...r.kernel.org # 5.4.x
---
 arch/x86/include/asm/asm.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 3ff577c0b102..1b563f9167ea 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -7,9 +7,11 @@
 # define __ASM_FORM_RAW(x)     x
 # define __ASM_FORM_COMMA(x) x,
 #else
-# define __ASM_FORM(x)	" " #x " "
-# define __ASM_FORM_RAW(x)     #x
-# define __ASM_FORM_COMMA(x) " " #x ","
+#include <linux/stringify.h>
+
+# define __ASM_FORM(x)	" " __stringify(x) " "
+# define __ASM_FORM_RAW(x)     __stringify(x)
+# define __ASM_FORM_COMMA(x) " " __stringify(x) ","
 #endif
 
 #ifndef __x86_64__
-- 
2.32.0




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