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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-23 16:30:36 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-15 23:16:06 +0530 |
| commit | 2e651ea1596b0ee25af4fcdc4cd13cbb33ffc254 (patch) | |
| tree | 51210f1cd80327a00e2fd4b0d20849b6329925d6 /arch/arc/kernel/Makefile | |
| parent | bf14e3b979a01cd7298d631736f965fe83c6e2bc (diff) | |
| download | linux-2e651ea1596b0ee25af4fcdc4cd13cbb33ffc254.tar.bz2 | |
ARC: Unaligned access emulation
ARC700 doesn't natively support unaligned access, but can be emulated
-Unaligned Access Exception
-Disassembly at the Fault address to find the exact insn (long/short)
Also per Arnd's comment, we runtime control it using 2 sysctl knobs:
* SYSCTL_ARCH_UNALIGN_ALLOW: Runtime enable/disble
* SYSCTL_ARCH_UNALIGN_NO_WARN: Warn on each emulation attempt
Originally contributed by Tim Yao <tim.yao@amlogic.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Tim Yao <tim.yao@amlogic.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc/kernel/Makefile')
| -rw-r--r-- | arch/arc/kernel/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arc/kernel/Makefile b/arch/arc/kernel/Makefile index d331bd7047a1..507a33d4a255 100644 --- a/arch/arc/kernel/Makefile +++ b/arch/arc/kernel/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_MODULES) += arcksyms.o module.o obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_ARC_DW2_UNWIND) += unwind.o obj-$(CONFIG_KPROBES) += kprobes.o +obj-$(CONFIG_ARC_MISALIGN_ACCESS) += unaligned.o obj-$(CONFIG_ARC_FPU_SAVE_RESTORE) += fpu.o CFLAGS_fpu.o += -mdpfp |