The patch titled
uml: use -mcmodel=kernel for x86_64
has been added to the -mm tree. Its filename is
uml-use-mcmodel=kernel-for-x86_64.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: uml: use -mcmodel=kernel for x86_64
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
We have never used this flag and recently one user experienced a complaining
warning about this (there was a symbol in the positive half of the address space
IIRC). So fix it.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Cc: Jeff Dike <jdike@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
diff -puN arch/um/Makefile-x86_64~uml-use-mcmodel=kernel-for-x86_64 arch/um/Makefile-x86_64
--- a/arch/um/Makefile-x86_64~uml-use-mcmodel=kernel-for-x86_64
+++ a/arch/um/Makefile-x86_64
@@ -4,10 +4,13 @@
core-y += arch/um/sys-x86_64/
START := 0x60000000
+_extra_flags_ = -fno-builtin -m64 -mcmodel=kernel
+
#We #undef __x86_64__ for kernelspace, not for userspace where
#it's needed for headers to work!
-CFLAGS += -U__$(SUBARCH)__ -fno-builtin -m64
-USER_CFLAGS += -fno-builtin -m64
+CFLAGS += -U__$(SUBARCH)__ $(_extra_flags_)
+USER_CFLAGS += $(_extra_flags_)
+
CHECKFLAGS += -m64
AFLAGS += -m64
LDFLAGS += -m elf_x86_64
_
Patches currently in -mm which might be from blaisorblade@xxxxxxxx are
uml-use-mcmodel=kernel-for-x86_64.patch
uml-fix-proc-vs-interrupt-context-spinlock-deadlock.patch
uml-clean-our-set_ether_mac.patch
uml-remove-pte_mkexec.patch
-
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