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KVM: arm/arm64: vgic: Keep track of implementation revision

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As we are about to tweak implementation aspects of the VGIC emulation,
while still preserving some level of backwards compatibility support,
add a field to keep track of the implementation revision field which is
reported to the VM and to userspace.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Christoffer Dall 2018-07-16 15:06:19 +02:00 • committed by Marc Zyngier
commit aa075b0f30
4 changed files with 12 additions and 4 deletions
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3
include/kvm/arm_vgic.h
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@ -217,6 +217,9 @@ struct vgic_dist {
/* vGIC model the kernel emulates for the guest (GICv2 or GICv3) */
u32 vgic_model;
/* Implementation revision as reported in the GICD_IIDR */
u32 implementation_rev;
/* Do injected MSIs require an additional device ID? */
bool msis_require_devid;