linux-kernel - [PATCH v2 4/4] alpha: Use absolute_pointer to define COMMAND

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Message-Id: <20210915035227.630204-5-linux@roeck-us.net>
Date:   Tue, 14 Sep 2021 20:52:27 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        "James E . J . Bottomley" <James.Bottomley@...senPartnership.com>,
        Helge Deller <deller@....de>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-alpha@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org, linux-parisc@...r.kernel.org,
        netdev@...r.kernel.org, linux-sparse@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH v2 4/4] alpha: Use absolute_pointer to define COMMAND_LINE

alpha:allmodconfig fails to build with the following error
when using gcc 11.x.

arch/alpha/kernel/setup.c: In function 'setup_arch':
arch/alpha/kernel/setup.c:493:13: error:
	'strcmp' reading 1 or more bytes from a region of size 0

Avoid the problem by declaring COMMAND_LINE as absolute_pointer().

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
v2: Declare COMMAND_LINE as absolute_pointer instead of using absolute_pointer
    on the define

 arch/alpha/include/asm/setup.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/alpha/include/asm/setup.h b/arch/alpha/include/asm/setup.h
index 58fe3f45a235..262aab99e391 100644
--- a/arch/alpha/include/asm/setup.h
+++ b/arch/alpha/include/asm/setup.h
@@ -36,7 +36,7 @@
  * place.
  */
 #define PARAM			ZERO_PGE
-#define COMMAND_LINE		((char *)(PARAM + 0x0000))
+#define COMMAND_LINE		((char *)(absolute_pointer(PARAM + 0x0000)))
 #define INITRD_START		(*(unsigned long *) (PARAM+0x100))
 #define INITRD_SIZE		(*(unsigned long *) (PARAM+0x108))
 
-- 
2.33.0