We want to provide more hw features to guests, namely the new bpb control as well as other transparent facilities that might be introduced by firmware updates (e.g. the stfle facility 81).
See the kernel discussion for the KVM side https://www.spinics.net/lists/kernel/msg2700551.html v1->v2: - style and comment fixes - drop transparent facility patch - add patch to introduce facility 81 Christian Borntraeger (3): header sync s390x/kvm: Handle bpb feature s390x/kvm: provide stfle.81 linux-headers/asm-s390/kvm.h | 9 ++++----- linux-headers/linux/kvm.h | 5 +++-- target/s390x/cpu.c | 1 + target/s390x/cpu.h | 1 + target/s390x/cpu_features.c | 2 ++ target/s390x/cpu_features_def.h | 2 ++ target/s390x/gen-features.c | 2 ++ target/s390x/kvm.c | 14 ++++++++++++++ target/s390x/machine.c | 17 +++++++++++++++++ 9 files changed, 46 insertions(+), 7 deletions(-) -- 2.9.4