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(parent: d46befe) | patch
arm64: Expose DC CVAP to userspace
authorRobin Murphy <robin.murphy@arm.com>
Tue, 25 Jul 2017 10:55:40 +0000 (11:55 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Wed, 9 Aug 2017 10:00:35 +0000 (11:00 +0100)
commit7aac405ebb3224037efd56b73d82d181111cdac3
tree04820d65325b5e9cfce27e0df511edd8c71a499ctree | snapshot
parentd46befef4c03fb61a62b3319ff5265aaac7bc465commit | 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 | blob | blame | history
arch/arm64/include/asm/sysreg.h diff | blob | blame | history
arch/arm64/include/uapi/asm/hwcap.h diff | blob | blame | history
arch/arm64/kernel/cpufeature.c diff | blob | blame | history
arch/arm64/kernel/cpuinfo.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git