diff options
| author | Tom Rini <trini@ti.com> | 2014-02-25 10:27:01 -0500 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-02-26 21:19:32 +0100 |
| commit | 1551df35f296f0a8df32f4f2054254f46e8be252 (patch) | |
| tree | 5c93d004be051b5b3cfae8c5cbdf297f8b07bb9b /fs | |
| parent | f503cc49a570b1e28a93b75bc912aedc93ba2cd0 (diff) | |
arm: Switch to -mno-unaligned-access when supported by the compiler
When we tell the compiler to optimize for ARMv7 (and ARMv6 for that
matter) it assumes a default of SCTRL.A being cleared and unaligned
accesses being allowed and fast at the hardware level. We set this bit
and must pass along -mno-unaligned-access so that the compiler will
still breakdown accesses and not trigger a data abort.
To better help understand the requirements of the project with respect
to unaligned memory access, the
Documentation/unaligned-memory-access.txt file has been added as
doc/README.unaligned-memory-access.txt and is taken from the v3.14-rc1
tag of the kernel.
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ubifs/Makefile | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/fs/ubifs/Makefile b/fs/ubifs/Makefile index 6b1a9a5b005..8c8c6ac683e 100644 --- a/fs/ubifs/Makefile +++ b/fs/ubifs/Makefile @@ -13,6 +13,3 @@ obj-y := ubifs.o io.o super.o sb.o master.o lpt.o obj-y += lpt_commit.o scan.o lprops.o obj-y += tnc.o tnc_misc.o debug.o crc16.o budget.o obj-y += log.o orphan.o recovery.o replay.o - -# SEE README.arm-unaligned-accesses -CFLAGS_super.o := $(PLATFORM_NO_UNALIGNED) |