[PATCH 4/4] ARM: atomics: don't use exclusives for atomic64 read/set with LPAE

[Catalin Marinas]

On Mon, Mar 25, 2013 at 06:19:41PM +0000, Will Deacon wrote:
> To ease page table updates with 64-bit descriptors, CPUs implementing
> LPAE are required to implement ldrd/strd as atomic operations.
> 
> This patch uses these accessors instead of the exclusive variants when
> performing atomic64_{read,set} on LPAE systems.
> 
> Signed-off-by: Will Deacon <will.deacon at arm.com>

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>