From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Auger Subject: [PATCH v4 5/7] KVM: arm/arm64: build a default routing table Date: Mon, 4 Apr 2016 10:47:35 +0200 Message-ID: <1459759657-7402-6-git-send-email-eric.auger@linaro.org> References: <1459759657-7402-1-git-send-email-eric.auger@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 3E6FC40F90 for ; Mon, 4 Apr 2016 04:47:58 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1mQnoMIxRLrm for ; Mon, 4 Apr 2016 04:47:57 -0400 (EDT) Received: from mail-lb0-f179.google.com (mail-lb0-f179.google.com [209.85.217.179]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id CEFD740B40 for ; Mon, 4 Apr 2016 04:47:56 -0400 (EDT) Received: by mail-lb0-f179.google.com with SMTP id qe11so149850802lbc.3 for ; Mon, 04 Apr 2016 01:49:12 -0700 (PDT) In-Reply-To: <1459759657-7402-1-git-send-email-eric.auger@linaro.org> 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 To: eric.auger@st.com, eric.auger@linaro.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, andre.przywara@arm.com, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Cc: pbonzini@redhat.com, Manish.Jaggi@caviumnetworks.com, patches@linaro.org List-Id: kvmarm@lists.cs.columbia.edu Implement a default routing table made of flat irqchip routing entries (gsi = irqchip.pin) covering the VGIC SPI indexes. This routing table is overwritten by the first user-space call to KVM_SET_GSI_ROUTING ioctl. Signed-off-by: Eric Auger --- --- virt/kvm/arm/vgic/vgic_init.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/virt/kvm/arm/vgic/vgic_init.c b/virt/kvm/arm/vgic/vgic_init.c index e4459e3..041443b 100644 --- a/virt/kvm/arm/vgic/vgic_init.c +++ b/virt/kvm/arm/vgic/vgic_init.c @@ -261,6 +261,10 @@ int vgic_init(struct kvm *kvm) kvm_for_each_vcpu(i, vcpu, kvm) kvm_vgic_vcpu_init(vcpu); + ret = kvm_setup_default_irq_routing(kvm); + if (ret) + goto out; + dist->initialized = true; out: return ret; @@ -454,3 +458,23 @@ out_free_irq: kvm_get_running_vcpus()); return ret; } + +int kvm_setup_default_irq_routing(struct kvm *kvm) +{ + struct kvm_irq_routing_entry *entries; + struct vgic_dist *dist = &kvm->arch.vgic; + u32 nr = dist->nr_spis; + int i, ret; + + entries = kcalloc(nr, sizeof(struct kvm_kernel_irq_routing_entry), + GFP_KERNEL); + for (i = 0; i < nr; i++) { + entries[i].gsi = i; + entries[i].type = KVM_IRQ_ROUTING_IRQCHIP; + entries[i].u.irqchip.irqchip = 0; + entries[i].u.irqchip.pin = i; + } + ret = kvm_set_irq_routing(kvm, entries, nr, 0); + kfree(entries); + return ret; +} -- 1.9.1