KVM: arm64: vgic: Don't check for vgic_ready() when setting NR_IRQS

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KVM commits to a particular sizing of SPIs when the vgic is initialized,
which is before the point a vgic becomes ready. On top of that, KVM
supplies a default amount of SPIs should userspace not explicitly
configure this.

As such, the check for vgic_ready() in the handling of
KVM_DEV_ARM_VGIC_GRP_NR_IRQS is completely wrong, and testing if nr_spis
is nonzero is sufficient for preventing userspace from playing games
with us.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20241017001947.2707312-2-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Oliver Upton 2024-10-17 00:19:46 +00:00 • committed by Marc Zyngier

parent c6c167afa0

commit 5978d4ec7e

1 changed files with 6 additions and 1 deletions

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arch/arm64/kvm/vgic/vgic-kvm-device.c

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