From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754143AbeD3LuO (ORCPT ); Mon, 30 Apr 2018 07:50:14 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:59152 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753286AbeD3LtJ (ORCPT ); Mon, 30 Apr 2018 07:49:09 -0400 From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com, cdall@kernel.org, peter.maydell@linaro.org Cc: andre.przywara@arm.com, drjones@redhat.com, wei@redhat.com Subject: [PATCH v6 09/12] KVM: arm/arm64: Check all vcpu redistributors are set on map_resources Date: Mon, 30 Apr 2018 13:48:35 +0200 Message-Id: <1525088918-8600-10-git-send-email-eric.auger@redhat.com> In-Reply-To: <1525088918-8600-1-git-send-email-eric.auger@redhat.com> References: <1525088918-8600-1-git-send-email-eric.auger@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On vcpu first run, we eventually know the actual number of vcpus. This is a synchronization point to check all redistributors were assigned. On kvm_vgic_map_resources() we check both dist and redist were set, eventually check potential base address inconsistencies. Signed-off-by: Eric Auger Reviewed-by: Christoffer Dall --- v4 -> v5: - added Christoffer's R-b v3 -> v4: - use kvm_debug --- virt/kvm/arm/vgic/vgic-v3.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c index c4a2a46..5563671 100644 --- a/virt/kvm/arm/vgic/vgic-v3.c +++ b/virt/kvm/arm/vgic/vgic-v3.c @@ -484,16 +484,25 @@ struct vgic_redist_region *vgic_v3_rdist_free_slot(struct list_head *rd_regions) int vgic_v3_map_resources(struct kvm *kvm) { - int ret = 0; struct vgic_dist *dist = &kvm->arch.vgic; - struct vgic_redist_region *rdreg = - list_first_entry(&dist->rd_regions, - struct vgic_redist_region, list); + struct kvm_vcpu *vcpu; + int ret = 0; + int c; if (vgic_ready(kvm)) goto out; - if (IS_VGIC_ADDR_UNDEF(dist->vgic_dist_base) || !rdreg) { + kvm_for_each_vcpu(c, vcpu, kvm) { + struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu; + + if (IS_VGIC_ADDR_UNDEF(vgic_cpu->rd_iodev.base_addr)) { + kvm_debug("vcpu %d redistributor base not set\n", c); + ret = -ENXIO; + goto out; + } + } + + if (IS_VGIC_ADDR_UNDEF(dist->vgic_dist_base)) { kvm_err("Need to set vgic distributor addresses first\n"); ret = -ENXIO; goto out; -- 2.5.5