Will Deacon c8366ba0fb arm64: xchg: patch in lse instructions when supported by the CPU ... On CPUs which support the LSE atomic instructions introduced in ARMv8.1, it makes sense to use them in preference to ll/sc sequences. This patch introduces runtime patching of our xchg primitives so that the LSE swp instruction (yes, you read right!) is used instead. Reviewed-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2015-07-27 15:28:51 +01:00
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asm	arm64: xchg: patch in lse instructions when supported by the CPU	2015-07-27 15:28:51 +01:00
uapi/asm	arm64: elf: advertise 8.1 atomic instructions as new hwcap	2015-07-27 14:34:39 +01:00