[PATCH 0/6] arm64 pmem support

[Robin Murphy]

Hi all,

With the latest updates to the pmem API, the arch code contribution
becomes very straightforward to wire up - I think there's about as
much code here to just cope with the existence of our new instruction
as there is to actually make use of it. I don't have access to any
NVDIMMs nor suitable hardware to put them in, so this is written purely
to spec - the extent of testing has been the feature detection on a
v8.2 Fast Model vs. v8.0 systems.

Patch #1 could go in as a fix ahead of the rest; it just needs to come
before patch #5 to prevent that blowing up the build.

Robin.

Robin Murphy (6):
  arm64: mm: Fix set_memory_valid() declaration
  arm64: Convert __inval_cache_range() to area-based
  arm64: Expose DC CVAP to userspace
  arm64: Handle trapped DC CVAP
  arm64: Implement pmem API support
  arm64: uaccess: Implement *_flushcache variants

 Documentation/arm64/cpu-feature-registers.txt |  2 ++
 arch/arm64/Kconfig                            | 12 +++++++
 arch/arm64/include/asm/assembler.h            |  6 ++++
 arch/arm64/include/asm/cacheflush.h           |  4 ++-
 arch/arm64/include/asm/cpucaps.h              |  3 +-
 arch/arm64/include/asm/esr.h                  |  3 +-
 arch/arm64/include/asm/string.h               |  4 +++
 arch/arm64/include/asm/sysreg.h               |  1 +
 arch/arm64/include/asm/uaccess.h              | 12 +++++++
 arch/arm64/include/uapi/asm/hwcap.h           |  1 +
 arch/arm64/kernel/cpufeature.c                | 13 ++++++++
 arch/arm64/kernel/cpuinfo.c                   |  1 +
 arch/arm64/kernel/head.S                      | 18 +++++-----
 arch/arm64/kernel/traps.c                     |  3 ++
 arch/arm64/lib/Makefile                       |  2 ++
 arch/arm64/lib/uaccess_flushcache.c           | 47 +++++++++++++++++++++++++++
 arch/arm64/mm/cache.S                         | 37 ++++++++++++++++-----
 arch/arm64/mm/pageattr.c                      | 18 ++++++++++
 18 files changed, 166 insertions(+), 21 deletions(-)
 create mode 100644 arch/arm64/lib/uaccess_flushcache.c

-- 
2.12.2.dirty