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linux/arch/arm64
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Arun Chandran 1e1c70059e arm64: vdso: fix build error when switching from LE to BE 
commit 1915e2ad1c upstream.

Building a kernel with CPU_BIG_ENDIAN fails if there are stale objects
from a !CPU_BIG_ENDIAN build. Due to a missing FORCE prerequisite on an
if_changed rule in the VDSO Makefile, we attempt to link a stale LE
object into the new BE kernel.

According to Documentation/kbuild/makefiles.txt, FORCE is required for
if_changed rules and forgetting it is a common mistake, so fix it by
'Forcing' the build of vdso. This patch fixes build errors like these:

arch/arm64/kernel/vdso/note.o: compiled for a little endian system and target is big endian
failed to merge target specific data of file arch/arm64/kernel/vdso/note.o

arch/arm64/kernel/vdso/sigreturn.o: compiled for a little endian system and target is big endian
failed to merge target specific data of file arch/arm64/kernel/vdso/sigreturn.o

Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Arun Chandran <achandran@mvista.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2015-05-06 21:59:14 +02:00
..
boot arm64: dts: Reduce size of virtio block device for foundation model 2013-12-20 16:20:21 +00:00
configs arm64: defconfig: Expand default enabled features 2014-02-07 17:17:28 +00:00
include arm64: Use the reserved TTBR0 if context switching to the init_mm 2015-04-13 14:03:03 +02:00
kernel arm64: vdso: fix build error when switching from LE to BE 2015-05-06 21:59:14 +02:00
kvm ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU 2014-10-05 14:52:10 -07:00
lib arm64: __clear_user: handle exceptions on strb 2014-11-21 09:23:02 -08:00
mm arm64: Honor __GFP_ZERO in dma allocations 2015-03-26 15:06:59 +01:00
xen xen/arm,arm64: enable SWIOTLB_XEN 2013-10-10 13:40:44 +00:00
Kconfig locking/mutex: Disable optimistic spinning on some architectures 2014-07-28 08:06:03 -07:00
Kconfig.debug arm64: Remove duplicate DEBUG_STACK_USAGE config 2013-10-02 18:03:26 +01:00
Makefile arm64: big-endian: add big-endian support to top-level arch Makefile 2013-10-25 15:59:31 +01:00