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authorRobin Murphy <robin.murphy@arm.com>2017-07-25 11:55:40 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2017-08-09 11:00:35 +0100
commit7aac405ebb3224037efd56b73d82d181111cdac3 (patch)
tree04820d65325b5e9cfce27e0df511edd8c71a499c /Documentation/arm64
parentd46befef4c03fb61a62b3319ff5265aaac7bc465 (diff)
downloadlinux-7aac405ebb3224037efd56b73d82d181111cdac3.tar.bz2
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/arm64')
-rw-r--r--Documentation/arm64/cpu-feature-registers.txt2
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