From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753561AbeD2Mfi (ORCPT ); Sun, 29 Apr 2018 08:35:38 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:52460 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753469AbeD2Mfg (ORCPT ); Sun, 29 Apr 2018 08:35:36 -0400 Date: Sun, 29 Apr 2018 14:35:33 +0200 From: Christoffer Dall To: Eric Auger Cc: eric.auger.pro@gmail.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com, peter.maydell@linaro.org, andre.przywara@arm.com Subject: Re: [PATCH v4 09/12] KVM: arm/arm64: Check all vcpu redistributors are set on map_resources Message-ID: <20180429123533.GE7512@C02W217FHV2R.local> References: <1524838505-3823-1-git-send-email-eric.auger@redhat.com> <1524838505-3823-10-git-send-email-eric.auger@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1524838505-3823-10-git-send-email-eric.auger@redhat.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 27, 2018 at 04:15:02PM +0200, Eric Auger wrote: > 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 > > --- > > 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 > > _______________________________________________ > kvmarm mailing list > kvmarm@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/kvmarm