Most of the QEMU changes for PV are related to the new IPL type with subcodes 8 - 10 and the execution of the necessary Ultravisor calls to IPL secure guests. Note that we can only boot into secure mode from normal mode, i.e. stfle 161 is not active in secure mode.
The other changes related to data gathering for emulation and disabling addressing checks in secure mode, as well as CPU resets. https://github.com/frankjaa/qemu/tree/protvirt v2: * Split out cleanups * Internal PV state tracking * Review feedback Janosch Frank (13): s390x: protvirt: Add diag308 subcodes 8 - 10 Header sync protvirt s390x: protvirt: Support unpack facility s390x: protvirt: Handle diag 308 subcodes 0,1,3,4 s390x: protvirt: Add pv state to cpu env s390x: protvirt: KVM intercept changes s390x: protvirt: SCLP interpretation s390x: protvirt: Add new VCPU reset functions s390x: Exit on vcpu reset error s390x: protvirt: Set guest IPL PSW s390x: protvirt: Move diag 308 data over SIDAD s390x: protvirt: Disable address checks for PV guest IO emulation s390x: protvirt: Handle SIGP store status correctly hw/s390x/Makefile.objs | 1 + hw/s390x/ipl.c | 81 +++++++++++++++++- hw/s390x/ipl.h | 35 ++++++++ hw/s390x/pv.c | 123 ++++++++++++++++++++++++++++ hw/s390x/pv.h | 27 ++++++ hw/s390x/s390-virtio-ccw.c | 59 ++++++++++++- hw/s390x/sclp.c | 17 ++++ include/hw/s390x/sclp.h | 2 + linux-headers/linux/kvm.h | 43 ++++++++++ target/s390x/cpu.c | 23 +++++- target/s390x/cpu.h | 1 + target/s390x/cpu_features_def.inc.h | 1 + target/s390x/diag.c | 56 +++++++++++-- target/s390x/helper.c | 4 + target/s390x/ioinst.c | 26 ++++-- target/s390x/kvm-stub.c | 10 ++- target/s390x/kvm.c | 51 ++++++++++-- target/s390x/kvm_s390x.h | 4 +- target/s390x/sigp.c | 1 + 19 files changed, 536 insertions(+), 29 deletions(-) create mode 100644 hw/s390x/pv.c create mode 100644 hw/s390x/pv.h -- 2.20.1
