KVM: arm/arm64: vgic-its: Add MSI-LPI translation cache invalidation
There's a number of cases where we need to invalidate the caching of translations, so let's add basic support for that. Tested-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <maz@kernel.org>alistair/sunxi64-5.4-dsi
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1bb3691d83
commit
7d825fd6ea
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@ -535,6 +535,29 @@ static unsigned long vgic_mmio_read_its_idregs(struct kvm *kvm,
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return 0;
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return 0;
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}
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}
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void vgic_its_invalidate_cache(struct kvm *kvm)
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{
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struct vgic_dist *dist = &kvm->arch.vgic;
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struct vgic_translation_cache_entry *cte;
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unsigned long flags;
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raw_spin_lock_irqsave(&dist->lpi_list_lock, flags);
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list_for_each_entry(cte, &dist->lpi_translation_cache, entry) {
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/*
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* If we hit a NULL entry, there is nothing after this
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* point.
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*/
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if (!cte->irq)
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break;
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__vgic_put_lpi_locked(kvm, cte->irq);
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cte->irq = NULL;
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}
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raw_spin_unlock_irqrestore(&dist->lpi_list_lock, flags);
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}
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int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
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int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
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u32 devid, u32 eventid, struct vgic_irq **irq)
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u32 devid, u32 eventid, struct vgic_irq **irq)
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{
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{
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@ -310,6 +310,7 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its,
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struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
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struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);
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void vgic_lpi_translation_cache_init(struct kvm *kvm);
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void vgic_lpi_translation_cache_init(struct kvm *kvm);
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void vgic_lpi_translation_cache_destroy(struct kvm *kvm);
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void vgic_lpi_translation_cache_destroy(struct kvm *kvm);
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void vgic_its_invalidate_cache(struct kvm *kvm);
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bool vgic_supports_direct_msis(struct kvm *kvm);
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bool vgic_supports_direct_msis(struct kvm *kvm);
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int vgic_v4_init(struct kvm *kvm);
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int vgic_v4_init(struct kvm *kvm);
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