linux-kernel - Trying to make a working kernel with the gold linker

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Date:	Tue, 10 Apr 2012 22:23:33 -0400
From:	"Theodore Ts'o" <tytso@....edu>
To:	linux-kernel@...r.kernel.org, hjl.tools@...il.com
Subject: Trying to make a working kernel with the gold linker

So I was trying to see if I could make the kernel build with the gold
linker (since until it can, I can't install it on my system).

I saw a message from HJ indicating one of the problems was x86_64 gold
used an incompatible max-page-size setting, so I tried changing it in
hopes that would make a bootable kernel.

No dice, it didn't work.  (At least not with a 2.20 binutils-gold.)

Does anybody know what the other issues with the gold linker?  Is the
2.22 binutils-gold more likely to work?

Thanks,

					- Ted

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 41a7237..ad769ed 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -119,7 +119,11 @@ asinstr := $(call as-instr,fxsaveq (%rax),-DCONFIG_AS_FXSAVEQ=1)
 KBUILD_AFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr)
 KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) $(cfi-sections) $(asinstr)

+ifeq ($(CONFIG_X86_32),y)
 LDFLAGS := -m elf_$(UTS_MACHINE)
+else
+LDFLAGS := -m elf_$(UTS_MACHINE) -z max-page-size=0x200000
+endif

 # Speed up the build
 KBUILD_CFLAGS += -pipe
--
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