Boot up qemu-kvm guest with 232 multiple functions disks, qemu
will report a ENOSPC error, it's not good to statically increase
iobus array. This patchset makes kvm_io_range array can be
resized dynamically, and change dev limit to 1000.
Changes from v1:
- fix typo: kvm_io_bus_range -> kvm_io_range
Changes from v2:
- unregister device only when it exists
Changes from v3:
- set upper bounds to limit userspace
Changes from v4:
- check if allocate successfully before memcpy()
- separate the change to 1000 devs to a new patch
Changes from v5:
- memcpy() two times, drop sort
Changes from V6:
- copy bus->dev_count memory to new_bus
---
Amos Kong (2):
KVM: resize kvm_io_range array dynamically
KVM: set upper bounds for iobus dev to limit userspace
include/linux/kvm_host.h | 5 +++--
virt/kvm/kvm_main.c | 38 ++++++++++++++++++--------------------
2 files changed, 21 insertions(+), 22 deletions(-)
--
Amos Kong
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