linux-kernel - [PATCH] xtensa: Fix section mismatch between memblock_reserve and mem

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Message-Id: <1559220098-9955-1-git-send-email-linux@roeck-us.net>
Date:   Thu, 30 May 2019 05:41:38 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Chris Zankel <chris@...kel.net>
Cc:     Max Filippov <jcmvbkbc@...il.com>, linux-xtensa@...ux-xtensa.org,
        linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH] xtensa: Fix section mismatch between memblock_reserve and mem_reserve

Since commit 9012d011660ea5cf2 ("compiler: allow all arches to enable
CONFIG_OPTIMIZE_INLINING"), xtensa:tinyconfig fails to build with section
mismatch errors.

WARNING: vmlinux.o(.text.unlikely+0x68): Section mismatch in reference
	from the function ___pa()
	to the function .meminit.text:memblock_reserve()
WARNING: vmlinux.o(.text.unlikely+0x74): Section mismatch in reference
	from the function mem_reserve()
	to the function .meminit.text:memblock_reserve()
FATAL: modpost: Section mismatches detected.

This was not seen prior to the above mentioned commit because mem_reserve()
was always inlined.

Mark mem_reserve(() as __init_memblock to have it reside in the same
section as memblock_reserve().

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 arch/xtensa/kernel/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index c0ec24349421..176cb46bcf12 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -310,7 +310,8 @@ extern char _SecondaryResetVector_text_start;
 extern char _SecondaryResetVector_text_end;
 #endif
 
-static inline int mem_reserve(unsigned long start, unsigned long end)
+static inline int __init_memblock mem_reserve(unsigned long start,
+					      unsigned long end)
 {
 	return memblock_reserve(start, end - start);
 }
-- 
2.7.4