[RFC PATCH 0/5] arm/arm64: KVM: dynamic VGIC sizing

[marc.zyngier@arm.com (Marc Zyngier)]

So far, the VGIC data structures have been statically sized, meaning
that we always have to support more interrupts than we actually want,
and more CPU interfaces than we should.

This is a waste of resource, and is the kind of things that should be
tuneable. This series partially addresses that issue by changing the
data structures to be dynamically allocated.

The various sizes are still static, but the VGIC code itself doesn't
have any reference to these anymore. Once plugged into the new device
API, we should be able to size it entierely dynamically.

I'm hopping for this series to be merged with Christoffer's VGIC
device control API.

This has been (lightly) tested on both ARM (TC2) and arm64 (model).

     M.

Marc Zyngier (5):
  arm/arm64: KVM: vgic: switch to dynamic allocation
  arm/arm64: KVM: vgic: kill VGIC_NR_SHARED_IRQS
  arm/arm64: KVM: vgic: kill VGIC_MAX_CPUS
  arm/arm64: KVM: vgic: handle out-of-range MMIO accesses
  arm/arm64: KVM: vgic: kill VGIC_NR_IRQS

 arch/arm/kvm/arm.c     |   5 +-
 include/kvm/arm_vgic.h |  49 ++++-----
 virt/kvm/arm/vgic.c    | 263 ++++++++++++++++++++++++++++++++++++++++---------
 3 files changed, 249 insertions(+), 68 deletions(-)

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1.8.2.3