From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH v4 11/26] KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI Date: Fri, 6 Oct 2017 16:33:46 +0100 Message-ID: <20171006153401.5481-12-marc.zyngier@arm.com> References: <20171006153401.5481-1-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Andre Przywara To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Return-path: In-Reply-To: <20171006153401.5481-1-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org When freeing an LPI (on a DISCARD command, for example), we need to unmap the VLPI down to the physical ITS level. Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier --- virt/kvm/arm/vgic/vgic-its.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index b2a678d131d0..c9b1c0967426 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -628,8 +628,12 @@ static void its_free_ite(struct kvm *kvm, struct its_ite *ite) list_del(&ite->ite_list); /* This put matches the get in vgic_add_lpi. */ - if (ite->irq) + if (ite->irq) { + if (ite->irq->hw) + WARN_ON(its_unmap_vlpi(ite->irq->host_irq)); + vgic_put_irq(kvm, ite->irq); + } kfree(ite); } -- 2.14.1