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authorPaolo Bonzini <pbonzini@redhat.com>2019-05-15 23:38:42 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2019-05-15 23:39:38 +0200
commit59c5c58c5b93285753d5c1de34d2e00039c27bc0 (patch)
tree19ac0493a5eb3bef477cb04f8117dad12b6bddb9 /virt
parentf93f7ede087f2edcc18e4b02310df5749a6b5a61 (diff)
parent4894fbcce856635c9ab79f44e50826e86bb92110 (diff)
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Merge tag 'kvm-ppc-next-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD
PPC KVM update for 5.2 * Support for guests to access the new POWER9 XIVE interrupt controller hardware directly, reducing interrupt latency and overhead for guests. * In-kernel implementation of the H_PAGE_INIT hypercall. * Reduce memory usage of sparsely-populated IOMMU tables. * Several bug fixes. Second PPC KVM update for 5.2 * Fix a bug, fix a spelling mistake, remove some useless code.
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f4e02cd8fa43..d22b1f4bfa56 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2950,6 +2950,16 @@ out:
}
#endif
+static int kvm_device_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ struct kvm_device *dev = filp->private_data;
+
+ if (dev->ops->mmap)
+ return dev->ops->mmap(dev, vma);
+
+ return -ENODEV;
+}
+
static int kvm_device_ioctl_attr(struct kvm_device *dev,
int (*accessor)(struct kvm_device *dev,
struct kvm_device_attr *attr),
@@ -2994,6 +3004,13 @@ static int kvm_device_release(struct inode *inode, struct file *filp)
struct kvm_device *dev = filp->private_data;
struct kvm *kvm = dev->kvm;
+ if (dev->ops->release) {
+ mutex_lock(&kvm->lock);
+ list_del(&dev->vm_node);
+ dev->ops->release(dev);
+ mutex_unlock(&kvm->lock);
+ }
+
kvm_put_kvm(kvm);
return 0;
}
@@ -3002,6 +3019,7 @@ static const struct file_operations kvm_device_fops = {
.unlocked_ioctl = kvm_device_ioctl,
.release = kvm_device_release,
KVM_COMPAT(kvm_device_ioctl),
+ .mmap = kvm_device_mmap,
};
struct kvm_device *kvm_device_from_filp(struct file *filp)