diff options
| author | Will Deacon <will.deacon@arm.com> | 2010-11-04 13:24:22 -0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-11-07 11:12:39 -0500 |
| commit | d4c7b1f9b41b76f6e794fdc4043f1903809e84d9 (patch) | |
| tree | d13ca032c0e28eba4b95c50040c5593d0a521513 /arch | |
| parent | c3b291d98878a5f25fee56255bcfa420e85dff59 (diff) | |
ARM: 6470/1: atomic64: use generic implementation for OABI configurations
The old apcs-gnu ABI doesn't guarantee that double words are allocated
to registers with even alignment, causing the 64-bit exclusive memory
operations to be rejected by the assembler.
This patch requires that CONFIG_AEABI is set in order to use the native
atomic operations and falls back to the generic (spinlock) code otherwise.
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a19a5266d5fc..8ae3d48d504c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig | |||
| @@ -6,7 +6,7 @@ config ARM | |||
| 6 | select HAVE_MEMBLOCK | 6 | select HAVE_MEMBLOCK |
| 7 | select RTC_LIB | 7 | select RTC_LIB |
| 8 | select SYS_SUPPORTS_APM_EMULATION | 8 | select SYS_SUPPORTS_APM_EMULATION |
| 9 | select GENERIC_ATOMIC64 if (!CPU_32v6K) | 9 | select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI) |
| 10 | select HAVE_OPROFILE if (HAVE_PERF_EVENTS) | 10 | select HAVE_OPROFILE if (HAVE_PERF_EVENTS) |
| 11 | select HAVE_ARCH_KGDB | 11 | select HAVE_ARCH_KGDB |
| 12 | select HAVE_KPROBES if (!XIP_KERNEL) | 12 | select HAVE_KPROBES if (!XIP_KERNEL) |