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Subject[PATCH v1 0/9] KVM: s390: Extend MEM_OP ioctl by storage key checked cmpxchg
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User space can use the MEM_OP ioctl to make storage key checked reads
and writes to the guest, however, it has no way of performing atomic,
key checked, accesses to the guest.
Extend the MEM_OP ioctl in order to allow for this, by adding a cmpxchg
mode. For now, support this mode for absolute accesses only.

This mode can be use, for example, to set the device-state-change
indicator and the adapter-local-summary indicator atomically.

Janis Schoetterl-Glausch (9):
s390/uaccess: Add storage key checked cmpxchg access to user space
KVM: s390: Extend MEM_OP ioctl by storage key checked cmpxchg
Documentation: KVM: s390: Describe KVM_S390_MEMOP_F_CMPXCHG
KVM: s390: selftest: memop: Pass mop_desc via pointer
KVM: s390: selftest: memop: Replace macros by functions
KVM: s390: selftest: memop: Add bad address test
KVM: s390: selftest: memop: Add cmpxchg tests
KVM: s390: selftest: memop: Fix typo
KVM: s390: selftest: memop: Fix wrong address being used in test

Documentation/virt/kvm/api.rst | 18 +-
include/uapi/linux/kvm.h | 5 +
arch/s390/include/asm/uaccess.h | 187 ++++++
arch/s390/kvm/gaccess.h | 4 +
arch/s390/kvm/gaccess.c | 56 ++
arch/s390/kvm/kvm-s390.c | 50 +-
tools/testing/selftests/kvm/s390x/memop.c | 704 +++++++++++++++++-----
7 files changed, 874 insertions(+), 150 deletions(-)


base-commit: f76349cf41451c5c42a99f18a9163377e4b364ff
--
2.34.1

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