Commit d4c7b1f9 authored by Will Deacon's avatar Will Deacon Committed by Russell King
Browse files

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: default avatarNicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent c3b291d9

arch/arm/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ config ARM 
	select HAVE_MEMBLOCK

	select RTC_LIB

	select SYS_SUPPORTS_APM_EMULATION

	select GENERIC_ATOMIC64 if (!CPU_32v6K)

	select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)

	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)

	select HAVE_ARCH_KGDB

	select HAVE_KPROBES if (!XIP_KERNEL)

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