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KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler

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It is possible that an LPI mapped in a different ITS gets unmapped while
handling the MOVALL command. If that is the case, there is no state that
can be migrated to the destination. Silently ignore it and continue
migrating other LPIs.

Cc: stable@vger.kernel.org
Fixes: ff9c114394 ("KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE")
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240221092732.4126848-3-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Oliver Upton 2024-02-21 09:27:32 +00:00 committed by Marc Zyngier
parent 8d3a7dfb80
commit 85a71ee9a0
1 changed files with 2 additions and 0 deletions
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arch/arm64/kvm/vgic/vgic-its.c
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@ -1435,6 +1435,8 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
for (i = 0; i < irq_count; i++) {
irq = vgic_get_irq(kvm, NULL, intids[i]);
if (!irq)
continue;
update_affinity(irq, vcpu2);