[kvm-unit-tests,0/3] s390x: Add skey removal facility test
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Message ID 20190827134936.1705-1-frankja@linux.ibm.com
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  • s390x: Add skey removal facility test
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Janosch Frank Aug. 27, 2019, 1:49 p.m. UTC
The storage key removal facility (skrf) is an anti-facility, which
makes skey related instructions result in a special operation
exception when they handle storage keys. E.g. pfmf in clearing mode
does not result in an exception, but pfmf key setting does.

The skrf is always active in protected virtualization guests and can
be emulated by KVM (expected to be upstreamed with the remaining hpage
patches).

Janosch Frank (3):
  s390x: Move pfmf to lib and make address void
  s390x: Storage key library functions now take void ptr addresses
  s390x: Add storage key removal facility

 lib/s390x/asm/mem.h |  40 ++++++++++++--
 s390x/Makefile      |   1 +
 s390x/pfmf.c        |  77 +++++++++++---------------
 s390x/skey.c        |  29 +++++-----
 s390x/skrf.c        | 130 ++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 212 insertions(+), 65 deletions(-)
 create mode 100644 s390x/skrf.c