linux-kernel - [PATCH 08/23] x86, realmode: Allow absolute pa

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Date:	Tue,  8 May 2012 21:22:31 +0300
From:	Jarkko Sakkinen <jarkko.sakkinen@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-kbuild@...r.kernel.org, Michal Marek <mmarek@...e.cz>,
	Sam Ravnborg <sam@...nborg.org>,
	Joseph Cihula <joseph.cihula@...el.com>,
	Shane Wang <shane.wang@...el.com>, hpa@...ux.intel.com
Subject: [PATCH 08/23] x86, realmode: Allow absolute pa_* symbols in the realmode code

From: "H. Peter Anvin" <hpa@...ux.intel.com>

Allow pa_* symbols to be absolute (outside any section) in the
realmode linker script.  Some versions of GNU ld are known to be
unhappy about symbols defined in a section that is otherwise empty.

Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 scripts/x86-relocs.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scripts/x86-relocs.c b/scripts/x86-relocs.c
index 0291470..74e16bb 100644
--- a/scripts/x86-relocs.c
+++ b/scripts/x86-relocs.c
@@ -62,6 +62,13 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = {
 
 static const char * const sym_regex_realmode[S_NSYMTYPES] = {
 /*
+ * These symbols are known to be relative, even if the linker marks them
+ * as absolute (typically defined outside any section in the linker script.)
+ */
+	[S_REL] =
+	"^pa_",
+
+/*
  * These are 16-bit segment symbols when compiling 16-bit code.
  */
 	[S_SEG] =
-- 
1.7.9.5

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