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KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_cmd_handle_movall()

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The new LPI xarray makes it possible to walk the VM's LPIs without
holding a lock, meaning that vgic_copy_lpi_list() is no longer
necessary. Prepare for the deletion by walking the LPI xarray directly
in vgic_its_cmd_handle_movall().

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240422200158.2606761-5-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Oliver Upton 2024-04-22 20:01:43 +00:00 committed by Marc Zyngier
parent c64115c80f
commit 11f4f8f3e6
1 changed files with 4 additions and 9 deletions
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13
arch/arm64/kvm/vgic/vgic-its.c
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@ -1420,10 +1420,10 @@ static int vgic_its_cmd_handle_invall(struct kvm *kvm, struct vgic_its *its,
static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its, static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
u64 *its_cmd) u64 *its_cmd)
{ {
struct vgic_dist *dist = &kvm->arch.vgic;
struct kvm_vcpu *vcpu1, *vcpu2; struct kvm_vcpu *vcpu1, *vcpu2;
struct vgic_irq *irq; struct vgic_irq *irq;
u32 *intids; unsigned long intid;
int irq_count, i;
/* We advertise GITS_TYPER.PTA==0, making the address the vcpu ID */ /* We advertise GITS_TYPER.PTA==0, making the address the vcpu ID */
vcpu1 = kvm_get_vcpu_by_id(kvm, its_cmd_get_target_addr(its_cmd)); vcpu1 = kvm_get_vcpu_by_id(kvm, its_cmd_get_target_addr(its_cmd));
@ -1435,12 +1435,8 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
if (vcpu1 == vcpu2) if (vcpu1 == vcpu2)
return 0; return 0;
irq_count = vgic_copy_lpi_list(kvm, vcpu1, &intids); xa_for_each(&dist->lpi_xa, intid, irq) {
if (irq_count < 0) irq = vgic_get_irq(kvm, NULL, intid);
return irq_count;
for (i = 0; i < irq_count; i++) {
irq = vgic_get_irq(kvm, NULL, intids[i]);
if (!irq) if (!irq)
continue; continue;
@ -1451,7 +1447,6 @@ static int vgic_its_cmd_handle_movall(struct kvm *kvm, struct vgic_its *its,
vgic_its_invalidate_cache(kvm); vgic_its_invalidate_cache(kvm);
kfree(intids);
return 0; return 0;
} }