[git pull v2] habanalabs fixes for 5.2-rc2/3

[Oded Gabbay]

Hi Greg,

This is the pull request containing fixes for 5.2-rc2/3. It is now
correctly rebased on your char-misc-linux branch.

It supersedes the pull request from 12/5, so you can discard that pull
request, as I see you didn't merge it anyway.

It contains 3 fixes and 1 change to a new IOCTL that was introduced to
kernel 5.2 in the previous pull requests.

See the tag comment for more details.

Thanks,
Oded

The following changes since commit a188339ca5a396acc588e5851ed7e19f66b0ebd9:

  Linux 5.2-rc1 (2019-05-19 15:47:09 -0700)

are available in the Git repository at:

  git://people.freedesktop.org/~gabbayo/linux tags/misc-habanalabs-fixes-2019-05-24

for you to fetch changes up to 8d45f1de3994c566cb5ce9b3cb07ff1518e68ddb:

  habanalabs: Avoid using a non-initialized MMU cache mutex (2019-05-24 22:46:15 +0300)

----------------------------------------------------------------
This tag contains the following fixes:

- Halt debug engines when user process closes the FD. We can't allow the
  device to issue transactions for a user which doesn't exists anymore.

- Fix various security holes in debugfs API.

- Add a new opcode to the DEBUG IOCTL API. The opcode is designed
  for setting the device into and out of debug mode. Although not a fix
  per-se, because this is a new IOCTL which is upstreamed in kernel 5.2, I
  think this is justified at this point because we won't be able to change
  the API later.

- Fix a bug where the code used an uninitialized mutex

----------------------------------------------------------------
Jann Horn (1):
      habanalabs: fix debugfs code

Oded Gabbay (1):
      uapi/habanalabs: add opcode for enable/disable device debug mode

Omer Shpigelman (1):
      habanalabs: halt debug engines on user process close

Tomer Tayar (1):
      habanalabs: Avoid using a non-initialized MMU cache mutex

 drivers/misc/habanalabs/context.c             |  6 +++
 drivers/misc/habanalabs/debugfs.c             | 60 ++++++++-------------------
 drivers/misc/habanalabs/device.c              |  2 +
 drivers/misc/habanalabs/goya/goya.c           |  3 +-
 drivers/misc/habanalabs/goya/goyaP.h          |  1 +
 drivers/misc/habanalabs/goya/goya_coresight.c | 17 ++++++++
 drivers/misc/habanalabs/habanalabs.h          |  2 +
 drivers/misc/habanalabs/mmu.c                 |  8 +---
 include/uapi/misc/habanalabs.h                | 22 +++++++++-
 9 files changed, 69 insertions(+), 52 deletions(-)