diff options
Diffstat (limited to 'virt/kvm/assigned-dev.c')
| -rw-r--r-- | virt/kvm/assigned-dev.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c index f73de63..7c98928 100644 --- a/virt/kvm/assigned-dev.c +++ b/virt/kvm/assigned-dev.c @@ -1,7 +1,7 @@ /* * Kernel-based Virtual Machine - device assignment support * - * Copyright (C) 2006-9 Red Hat, Inc + * Copyright (C) 2010 Red Hat, Inc. and/or its affiliates. * * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. @@ -16,6 +16,7 @@ #include <linux/spinlock.h> #include <linux/pci.h> #include <linux/interrupt.h> +#include <linux/slab.h> #include "irq.h" static struct kvm_assigned_dev_kernel *kvm_find_assigned_dev(struct list_head *head, @@ -57,12 +58,10 @@ static int find_index_from_host_irq(struct kvm_assigned_dev_kernel static void kvm_assigned_dev_interrupt_work_handler(struct work_struct *work) { struct kvm_assigned_dev_kernel *assigned_dev; - struct kvm *kvm; int i; assigned_dev = container_of(work, struct kvm_assigned_dev_kernel, interrupt_work); - kvm = assigned_dev->kvm; spin_lock_irq(&assigned_dev->assigned_dev_lock); if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) { @@ -315,12 +314,16 @@ static int assigned_device_enable_host_msix(struct kvm *kvm, kvm_assigned_dev_intr, 0, "kvm_assigned_msix_device", (void *)dev); - /* FIXME: free requested_irq's on failure */ if (r) - return r; + goto err; } return 0; +err: + for (i -= 1; i >= 0; i--) + free_irq(dev->host_msix_entries[i].vector, (void *)dev); + pci_disable_msix(dev->dev); + return r; } #endif @@ -443,9 +446,6 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm, struct kvm_assigned_dev_kernel *match; unsigned long host_irq_type, guest_irq_type; - if (!capable(CAP_SYS_RAWIO)) - return -EPERM; - if (!irqchip_in_kernel(kvm)) return r; @@ -504,12 +504,12 @@ out: static int kvm_vm_ioctl_assign_device(struct kvm *kvm, struct kvm_assigned_pci_dev *assigned_dev) { - int r = 0; + int r = 0, idx; struct kvm_assigned_dev_kernel *match; struct pci_dev *dev; mutex_lock(&kvm->lock); - down_read(&kvm->slots_lock); + idx = srcu_read_lock(&kvm->srcu); match = kvm_find_assigned_dev(&kvm->arch.assigned_dev_head, assigned_dev->assigned_dev_id); @@ -526,7 +526,8 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm, r = -ENOMEM; goto out; } - dev = pci_get_bus_and_slot(assigned_dev->busnr, + dev = pci_get_domain_bus_and_slot(assigned_dev->segnr, + assigned_dev->busnr, assigned_dev->devfn); if (!dev) { printk(KERN_INFO "%s: host device not found\n", __func__); @@ -548,6 +549,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm, pci_reset_function(dev); match->assigned_dev_id = assigned_dev->assigned_dev_id; + match->host_segnr = assigned_dev->segnr; match->host_busnr = assigned_dev->busnr; match->host_devfn = assigned_dev->devfn; match->flags = assigned_dev->flags; @@ -573,7 +575,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm, } out: - up_read(&kvm->slots_lock); + srcu_read_unlock(&kvm->srcu, idx); mutex_unlock(&kvm->lock); return r; out_list_del: @@ -585,7 +587,7 @@ out_put: pci_dev_put(dev); out_free: kfree(match); - up_read(&kvm->slots_lock); + srcu_read_unlock(&kvm->srcu, idx); mutex_unlock(&kvm->lock); return r; } |