[RFC PATCH v3 0/5] s390: Host support for channel I/O.

Cornelia Huck
2012-10-31T16:24:33Z

Hi,

here's the latest incarnation of my host patches to support channel
I/O on s390.

Most patches have only seen minor fixes, but patch 5 is completely
different since the kvm <-> user space interface has been reworked.

We now handle only interrupt-related operations in kvm. This
includes two channel I/O instructions that can dequeue pending I/O
interrupts: tpi and tsch (not the part actually interacting with
the subchannel). This makes the interface less complex (only one
new exit for tsch handling) and avoids duplicating code from qemu.

Cornelia Huck (5):
KVM: s390: Support for I/O interrupts.
KVM: s390: Add support for machine checks.
KVM: s390: In-kernel handling of I/O instructions.
KVM: s390: Base infrastructure for enabling capabilities.
KVM: s390: Add support for channel I/O instructions.

Documentation/virtual/kvm/api.txt | 40 +++++-
arch/s390/include/asm/kvm_host.h | 11 ++
arch/s390/kvm/intercept.c | 22 ++-
arch/s390/kvm/interrupt.c | 264 +++++++++++++++++++++++++++++++++++-
arch/s390/kvm/kvm-s390.c | 38 ++++++
arch/s390/kvm/kvm-s390.h | 6 +
arch/s390/kvm/priv.c | 275 +++++++++++++++++++++++++++++++++++---
arch/s390/kvm/trace-s390.h | 26 +++-
include/linux/kvm.h | 18 +++
include/trace/events/kvm.h | 2 +-
10 files changed, 673 insertions(+), 29 deletions(-)

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1.7.12.4