diff options
| author | Steve Capper <[email protected]> | 2018-12-06 22:50:42 +0000 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2018-12-10 18:42:18 +0000 |
| commit | b9567720a1b8e739380e0241413606c056c57859 (patch) | |
| tree | 760f658f0fbb3ec46f0cbdaa0314245f6f094fb7 /lib/mpi/mpi-internal.h | |
| parent | 67e7fdfcc6824a4f768d76d89377b33baad58fad (diff) | |
arm64: mm: Allow forcing all userspace addresses to 52-bit
On arm64 52-bit VAs are provided to userspace when a hint is supplied to
mmap. This helps maintain compatibility with software that expects at
most 48-bit VAs to be returned.
In order to help identify software that has 48-bit VA assumptions, this
patch allows one to compile a kernel where 52-bit VAs are returned by
default on HW that supports it.
This feature is intended to be for development systems only.
Signed-off-by: Steve Capper <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-internal.h')
0 files changed, 0 insertions, 0 deletions