[PATCH v3 0/2] Fix minor LLM findings in zcrypt dd

[Harald Freudenberger <freude@linux.ibm.com>]

Fix some minor LLM findings related to the zcrypt device driver.

Changelog:
v1: Two patches:
    - The first patch fixes a gap related to speculative execution
      with the domain index.
    - The second patch fixes a length/pointer check with parsing the
      FQ reply from a CCA card.
v2: Fix a complain from Sashiko about silently dropping invalid
    domains down to domain value 0. So now a explicit check makes
    sure domain is either AUTOSEL_DOM or in range 0...255.
    2nd patch unchanged.
v3: Well this spectre thing points out to be really wired. So here is
    again a rework claiming it shall protect against speculative
    execution with respect to the domain value.
    2nd patch unchanged.

Harald Freudenberger (2):
  s390/zcrypt: Guard domain index uses against speculative bypass
  s390/zcrypt: Fix out-of-bounds ptr advance in
    cca_query_crypto_facility()

 drivers/s390/crypto/zcrypt_api.c     | 35 ++++++++++++++++++++--------
 drivers/s390/crypto/zcrypt_ccamisc.c | 22 +++++++++++++++--
 2 files changed, 45 insertions(+), 12 deletions(-)

--
2.43.0