This patch series is the QEMU counterpart to the KVM/kernel support for
guest dedicated crypto adapters. The KVM/kernel model is built on the
VFIO mediated device framework and provides the infrastructure for
granting exclusive guest access to crypto devices installed on the linux
host. This patch series introduces a new QEMU command line option, QEMU
object model and CPU model features to exploit the KVM/kernel model.
See the detailed specifications for AP virtualization provided by this
patch set in docs/vfio-ap.txt for a more complete discussion of the
design introduced by this patch series.
Note: This series implements the minimal viable product (MVP) and does not
provide support for hot plug/unplug, migration, or VSIE. The goal
of the MVP model is to solidify a base upon which these additional
features will be built.
v3 => v4 Change log:
===================
* Made vfio-ap device unpluggable for now
* Renamed command line CPU model feature for QCI: qci=on -> apqci=on
* Removed call to KVM_S390_VM_CRYPTO_INTERPRET_AP ioctl - ioctl was
removed from kernel and AP instruction interpretation is set from the
VFIO device driver
* Added check to ensure only one vfio-ap device can be configured per
guest
* Removed AP instruction interception handlers: AP instructions will be
interpreted by default if AP facilities are installed to handle the case
where feature ap=on and no vfio-ap device is configured for the guest.
Tony Krowiak (5):
linux-headers: linux header updates for AP support
s390x/ap: base Adjunct Processor (AP) object
s390x/cpumodel: Set up CPU model for AP device support
s390x/vfio: ap: Introduce VFIO AP device
s390: doc: detailed specifications for AP virtualization
default-configs/s390x-softmmu.mak | 1 +
docs/vfio-ap.txt | 649 +++++++++++++++++++++++++++++++++++++
hw/s390x/Makefile.objs | 1 +
hw/s390x/ap-device.c | 39 +++
hw/vfio/Makefile.objs | 1 +
hw/vfio/ap.c | 191 +++++++++++
include/hw/s390x/ap-device.h | 38 +++
include/hw/vfio/vfio-common.h | 1 +
linux-headers/asm-s390/kvm.h | 2 +
linux-headers/linux/vfio.h | 2 +
target/s390x/cpu_features.c | 3 +
target/s390x/cpu_features_def.h | 3 +
target/s390x/cpu_models.c | 2 +
target/s390x/gen-features.c | 3 +
target/s390x/kvm.c | 1 +
ui/keycodemapdb | 2 +-
16 files changed, 938 insertions(+), 1 deletions(-)
create mode 100644 docs/vfio-ap.txt
create mode 100644 hw/s390x/ap-device.c
create mode 100644 hw/vfio/ap.c
create mode 100644 include/hw/s390x/ap-device.h
