From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761807AbcLPPLn (ORCPT ); Fri, 16 Dec 2016 10:11:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37524 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761614AbcLPPK6 (ORCPT ); Fri, 16 Dec 2016 10:10:58 -0500 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini Subject: [PATCH v2 3/6] KVM: x86: make pic setup code look like ioapic setup Date: Fri, 16 Dec 2016 16:10:03 +0100 Message-Id: <20161216151006.11776-4-rkrcmar@redhat.com> In-Reply-To: <20161216151006.11776-1-rkrcmar@redhat.com> References: <20161216151006.11776-1-rkrcmar@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 16 Dec 2016 15:10:57 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We don't treat kvm->arch.vpic specially anymore, so the setup can look like ioapic. This gets a bit more information out of return values. Reviewed-by: Paolo Bonzini Signed-off-by: Radim Krčmář --- v2: r-b Paolo --- arch/x86/kvm/i8259.c | 16 +++++++++++----- arch/x86/kvm/irq.h | 4 ++-- arch/x86/kvm/x86.c | 30 +++++++++++++++--------------- 3 files changed, 28 insertions(+), 22 deletions(-) diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 7cc2360f1848..73ea24d4f119 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -598,14 +598,14 @@ static const struct kvm_io_device_ops picdev_eclr_ops = { .write = picdev_eclr_write, }; -struct kvm_pic *kvm_create_pic(struct kvm *kvm) +int kvm_pic_init(struct kvm *kvm) { struct kvm_pic *s; int ret; s = kzalloc(sizeof(struct kvm_pic), GFP_KERNEL); if (!s) - return NULL; + return -ENOMEM; spin_lock_init(&s->lock); s->kvm = kvm; s->pics[0].elcr_mask = 0xf8; @@ -635,7 +635,9 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm) mutex_unlock(&kvm->slots_lock); - return s; + kvm->arch.vpic = s; + + return 0; fail_unreg_1: kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS, &s->dev_slave); @@ -648,13 +650,17 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm) kfree(s); - return NULL; + return ret; } -void kvm_destroy_pic(struct kvm_pic *vpic) +void kvm_pic_destroy(struct kvm *kvm) { + struct kvm_pic *vpic = kvm->arch.vpic; + kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_master); kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_slave); kvm_io_bus_unregister_dev(vpic->kvm, KVM_PIO_BUS, &vpic->dev_eclr); + + kvm->arch.vpic = NULL; kfree(vpic); } diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h index 79cfc945125c..13248d4d306c 100644 --- a/arch/x86/kvm/irq.h +++ b/arch/x86/kvm/irq.h @@ -73,8 +73,8 @@ struct kvm_pic { unsigned long irq_states[PIC_NUM_PINS]; }; -struct kvm_pic *kvm_create_pic(struct kvm *kvm); -void kvm_destroy_pic(struct kvm_pic *vpic); +int kvm_pic_init(struct kvm *kvm); +void kvm_pic_destroy(struct kvm *kvm); int kvm_pic_read_irq(struct kvm *kvm); void kvm_pic_update_irq(struct kvm_pic *s); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a8dbfb4129c5..2fa004029b37 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3935,33 +3935,34 @@ long kvm_arch_vm_ioctl(struct file *filp, r = kvm_vm_ioctl_get_nr_mmu_pages(kvm); break; case KVM_CREATE_IRQCHIP: { - struct kvm_pic *vpic; - mutex_lock(&kvm->lock); + r = -EEXIST; if (irqchip_in_kernel(kvm)) goto create_irqchip_unlock; + r = -EINVAL; if (kvm->created_vcpus) goto create_irqchip_unlock; - r = -ENOMEM; - vpic = kvm_create_pic(kvm); - if (vpic) { - r = kvm_ioapic_init(kvm); - if (r) { - mutex_lock(&kvm->slots_lock); - kvm_destroy_pic(vpic); - mutex_unlock(&kvm->slots_lock); - goto create_irqchip_unlock; - } - } else + + r = kvm_pic_init(kvm); + if (r) goto create_irqchip_unlock; + + r = kvm_ioapic_init(kvm); + if (r) { + mutex_lock(&kvm->slots_lock); + kvm_pic_destroy(kvm); + mutex_unlock(&kvm->slots_lock); + goto create_irqchip_unlock; + } + r = kvm_setup_default_irq_routing(kvm); if (r) { mutex_lock(&kvm->slots_lock); mutex_lock(&kvm->irq_lock); kvm_ioapic_destroy(kvm); - kvm_destroy_pic(vpic); + kvm_pic_destroy(kvm); mutex_unlock(&kvm->irq_lock); mutex_unlock(&kvm->slots_lock); goto create_irqchip_unlock; @@ -3969,7 +3970,6 @@ long kvm_arch_vm_ioctl(struct file *filp, /* Write kvm->irq_routing before enabling irqchip_in_kernel. */ smp_wmb(); kvm->arch.irqchip_mode = KVM_IRQCHIP_KERNEL; - kvm->arch.vpic = vpic; create_irqchip_unlock: mutex_unlock(&kvm->lock); break; -- 2.11.0