Architectures can freely choose vCPU ids as long as they stay below
KVM_MAX_VCPUS, which is the maximum number of vCPUS. This is a problem
for PowerPC where the ids have to be multiples of the number of threads
per core in the host: when the host is POWER8 with 8 threads per core,
we can only have KVM_MAX_VCPUS / 8 in the guest.
This series decouplates the vCPU id limit from the number of vCPUs.
The first patch is a cleanup I kept from v4.
The second patch adds KVM_MAX_VCPU_ID as suggested by Radim.
---
Greg Kurz (2):
KVM: remove NULL return path for vcpu ids >= KVM_MAX_VCPUS
kvm: introduce KVM_MAX_VCPU_ID
Documentation/virtual/kvm/api.txt | 10 ++++++++--
arch/powerpc/include/asm/kvm_host.h | 2 ++
arch/powerpc/kvm/powerpc.c | 3 +++
include/linux/kvm_host.h | 11 ++++++++---
include/uapi/linux/kvm.h | 1 +
virt/kvm/kvm_main.c | 2 +-
6 files changed, 23 insertions(+), 6 deletions(-)
--
Greg
