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| author | Robin Murphy <robin.murphy@arm.com> | 2017-07-25 11:55:40 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-08-09 11:00:35 +0100 |
| commit | 7aac405ebb3224037efd56b73d82d181111cdac3 (patch) | |
| tree | 04820d65325b5e9cfce27e0df511edd8c71a499c /Documentation | |
| parent | d46befef4c03fb61a62b3319ff5265aaac7bc465 (diff) | |
| download | lwn-7aac405ebb3224037efd56b73d82d181111cdac3.tar.gz lwn-7aac405ebb3224037efd56b73d82d181111cdac3.zip | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arm64/cpu-feature-registers.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/arm64/cpu-feature-registers.txt b/Documentation/arm64/cpu-feature-registers.txt index d1c97f9f51cc..dad411d635d8 100644 --- a/Documentation/arm64/cpu-feature-registers.txt +++ b/Documentation/arm64/cpu-feature-registers.txt @@ -179,6 +179,8 @@ infrastructure: | FCMA | [19-16] | y | |--------------------------------------------------| | JSCVT | [15-12] | y | + |--------------------------------------------------| + | DPB | [3-0] | y | x--------------------------------------------------x Appendix I: Example |