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arm/arm64: KVM: allow userland to request a virtual GICv3

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With all of the GICv3 code in place now we allow userland to ask the
kernel for using a virtual GICv3 in the guest.
Also we provide the necessary support for guests setting the memory
addresses for the virtual distributor and redistributors.
This requires some userland code to make use of that feature and
explicitly ask for a virtual GICv3.
Document that KVM_CREATE_IRQCHIP only works for GICv2, but is
considered legacy and using KVM_CREATE_DEVICE is preferred.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2014-06-03 10:26:30 +02:00 • committed by Christoffer Dall
parent b5d84ff600
commit ac3d373564
6 changed files with 73 additions and 22 deletions
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4
include/kvm/arm_vgic.h
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@ -36,8 +36,8 @@
#define VGIC_V2_MAX_CPUS 8
/* Sanity checks... */
#if (KVM_MAX_VCPUS > 8)
#error Invalid number of CPU interfaces
#if (KVM_MAX_VCPUS > 255)
#error Too many KVM VCPUs, the VGIC only supports up to 255 VCPUs for now
#endif
#if (VGIC_NR_IRQS_LEGACY & 31)