[Skiboot] [RFC PATCH 0/7] virtual memory patches

[Nicholas Piggin]

The first 4-5 patches actually should be good to go without the
last ones. I've spent too much time hacking on this already, so
I'll put it on hold again for a while unless anyone is really
interested. It mainly started as an excercise in learing the hash
MMU a bit better. I don't recommend that for anyone, but this just
uses the most basic powerpc features so it should be a lot easier
than looking at Linux.

Thanks,
Nick

Nicholas Piggin (7):
  core/flash: NULL pointer dereference fixes
  core/device: NULL pointer dereference fix
  asm/head: move unnecessary code out of head
  asm/head: use HSRR exception registers in FIXUP_ENDIAN
  core/exceptions: save current MSR in exception frame
  asm/head: provide asm support for interrupts to be returned from
  virtual memory for OPAL boot

 asm/asm-offsets.c         |   7 +
 asm/head.S                | 239 ++++---------
 asm/misc.S                | 138 ++++++++
 core/Makefile.inc         |   2 +-
 core/cpu.c                |   7 +
 core/device.c             |   5 +-
 core/exceptions.c         | 113 ++++--
 core/flash-subpartition.c |  15 +-
 core/flash.c              |   9 +-
 core/init.c               | 107 +++++-
 core/lock.c               |  10 +-
 core/mem_region.c         |  84 +++--
 core/opal.c               |  14 +-
 core/vm.c                 | 723 ++++++++++++++++++++++++++++++++++++++
 hdata/spira.c             |  21 +-
 hw/fake-nvram.c           |  12 +-
 hw/homer.c                |   5 +
 hw/lpc-uart.c             |  31 +-
 hw/lpc.c                  |   2 +
 hw/phb4.c                 |  16 +-
 hw/slw.c                  |   4 +-
 hw/xive.c                 |   1 +
 hw/xscom.c                |   3 +-
 include/cmpxchg.h         |  12 +
 include/cpu.h             |   9 +
 include/io.h              |  57 ++-
 include/mem_region.h      |   1 +
 include/processor.h       |  12 +-
 include/skiboot.h         |  26 ++
 include/stack.h           |   1 +
 libstb/container.c        |  12 +-
 skiboot.lds.S             |  77 ++--
 32 files changed, 1472 insertions(+), 303 deletions(-)
 create mode 100644 core/vm.c

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2.18.0