This series enables general QEMU support for AP pass-through for Secure Execution guests (pv-guests).
To enable AP-PT on pv-guests QEMU has to turn on the corresponding bits in the KVM CPU-model[1] if the CPU firmware supports it. However, it only makes sense to turn on AP-PT if the QEMU user enabled (general) AP for that guest. See: https://lore.kernel.org/linux-s390/c29750cc-fc64-2805-f583-c7be247de...@linux.ibm.com/T/#t The series consists of five patches: 1/2) fixes from Janosch for AP handling 3) update kvm-s390 header for this series (NOTFORMERGE) 4) small cleanup for kvm_s390_set_attr() refactor code to add ap_available() and ap_enabled() 5) Add UV_CALL CPU model enablement since v3: - nitfixes (Thomas) - r-b from Michael&Thomas since v2: - add fixes for AP from Janosch - rename *UV_CALL* to UV_FEAT_GUEST (Janosch) - early return on some functions (Janosch) - add r-b from Michael (Patch 4) - mark linux header update as NOTFORMERGE since v1: - removed the new features from the default gen16 model - updated KVM-headers to match KVM series v3 [1] - applied review comments from Thomas Steffen Janosch Frank (2): s390x/ap: fix missing subsystem reset registration s390x: switch pv and subsystem reset ordering on reboot Steffen Eiden (3): NOTFORMERGE update linux-headers/asm-s390/kvm.h target/s390x/kvm: Refactor AP functionalities target/s390x: AP-passthrough for PV guests hw/s390x/s390-virtio-ccw.c | 7 ++- linux-headers/asm-s390/kvm.h | 16 +++++ target/s390x/cpu_features.h | 1 + target/s390x/cpu_features_def.h.inc | 4 ++ target/s390x/cpu_models.c | 2 + target/s390x/gen-features.c | 2 + target/s390x/kvm/kvm.c | 94 ++++++++++++++++++++++++++--- 7 files changed, 116 insertions(+), 10 deletions(-) -- 2.41.0
