7aac405ebb3224037efd56b73d82d181111cdac3 - arm/linux

commit	7aac405ebb3224037efd56b73d82d181111cdac3	[log] [tgz]
author	Robin Murphy <robin.murphy@arm.com>	Tue Jul 25 11:55:40 2017 +0100
committer	Catalin Marinas <catalin.marinas@arm.com>	Wed Aug 09 11:00:35 2017 +0100
tree	04820d65325b5e9cfce27e0df511edd8c71a499c
parent	d46befef4c03fb61a62b3319ff5265aaac7bc465 [diff]

arm64: Expose DC CVAP to userspace

The ARMv8.2-DCPoP feature introduces persistent memory support to the
architecture, by defining a point of persistence in the memory
hierarchy, and a corresponding cache maintenance operation, DC CVAP.
Expose the support via HWCAP and MRS emulation.

Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Documentation/arm64/cpu-feature-registers.txt[diff]
arch/arm64/include/asm/sysreg.h[diff]
arch/arm64/include/uapi/asm/hwcap.h[diff]
arch/arm64/kernel/cpufeature.c[diff]
arch/arm64/kernel/cpuinfo.c[diff]

5 files changed

tree: 04820d65325b5e9cfce27e0df511edd8c71a499c