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

commit 85a71ee9a0700f6c18862ef3b0011ed9dad99aca upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Upton 2024-02-21 09:27:32 +00:00 committed by Greg Kroah-Hartman
parent 6b2ff10390
commit 72fdbc728c
1 changed files with 2 additions and 0 deletions
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arch/arm64/kvm/vgic/vgic-its.c
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@ -1427,6 +1427,8 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
for (i = 0; i < irq_count; i++) { for (i = 0; i < irq_count; i++) {
irq = vgic_get_irq(kvm, NULL, intids[i]); irq = vgic_get_irq(kvm, NULL, intids[i]);
if (!irq)
continue;
update_affinity(irq, vcpu2); update_affinity(irq, vcpu2);