This series enables general KVM support for AP-passthrough for Secure
Execution guests (PV-guests).
To enable AP inside PV-guests two things have to be done/considered:
1) set corresponding flags in the Create Secure Configuration UVC if
firmware supports AP for PV-guests (patch 4).
2) enable/disable AP in PV-guests if the VMM wants this (patch 3).
since v3:
- add a patch from Viktor that handles a new rc that can occur with AP-pt.
- remove KVM_S390_VM_CPU_UV_FEAT_GUEST_DEFAULT define (Janosch)
- add a boundary check in uv_has_feature() (Janosch)
- add r-b from Janosch
since v2:
- applied styling recommendations from Heiko
since v1:
- PATCH 1: r-b from Claudio
- PATCH 2: fixed formatting issues (Claudio)
- PATCH 3: removed unnecessary checks (Claudio)
Steffen
Steffen Eiden (3):
s390: uv: UV feature check utility
KVM: s390: Add UV feature negotiation
KVM: s390: pv: Allow AP-instructions for pv-guests
Viktor Mihajlovski (1):
KVM: s390: pv: relax WARN_ONCE condition for destroy fast
arch/s390/include/asm/kvm_host.h | 2 +
arch/s390/include/asm/uv.h | 19 +++++++-
arch/s390/include/uapi/asm/kvm.h | 16 +++++++
arch/s390/kernel/uv.c | 2 +-
arch/s390/kvm/kvm-s390.c | 75 +++++++++++++++++++++++++++++++-
arch/s390/kvm/pv.c | 9 ++--
arch/s390/mm/fault.c | 2 +-
7 files changed, 118 insertions(+), 7 deletions(-)
--
2.41.0
