On Tue, Mar 01, 2011 at 02:20:02PM +0200, Michael S. Tsirkin wrote:
> On Tue, Mar 01, 2011 at 02:10:37PM +0800, Sheng Yang wrote:
> > On Monday 28 February 2011 19:27:29 Michael S. Tsirkin wrote:
> > > On Mon, Feb 28, 2011 at 03:20:04PM +0800, Sheng Yang wrote:
> > > > @@ -1877,6 +1879,24 @@ static long kvm_vm_ioctl(struct file *filp,
> > > >
> > > > mutex_unlock(&kvm->lock);
> > > > break;
> > > >
> > > > #endif
> > > >
> > > > + case KVM_REGISTER_MSIX_MMIO: {
> > > > + struct kvm_msix_mmio_user mmio_user;
> > > > +
> > > > + r = -EFAULT;
> > > > + if (copy_from_user(&mmio_user, argp, sizeof mmio_user))
> > > > + goto out;
> > > > + r = kvm_vm_ioctl_register_msix_mmio(kvm, &mmio_user);
> > > > + break;
> > > > + }
> > > > + case KVM_UNREGISTER_MSIX_MMIO: {
> > > > + struct kvm_msix_mmio_user mmio_user;
> > > > +
> > > > + r = -EFAULT;
> > > > + if (copy_from_user(&mmio_user, argp, sizeof mmio_user))
> > > > + goto out;
> > > > + r = kvm_vm_ioctl_unregister_msix_mmio(kvm, &mmio_user);
> > > > + break;
> > > > + }
> > > >
> > > > default:
> > > > r = kvm_arch_vm_ioctl(filp, ioctl, arg);
> > > > if (r == -ENOTTY)
> > > >
> > > > @@ -1988,6 +2008,12 @@ static int kvm_dev_ioctl_create_vm(void)
> > > >
> > > > return r;
> > > >
> > > > }
> > > >
> > > > #endif
> > > >
> > > > + r = kvm_register_msix_mmio_dev(kvm);
> > > > + if (r < 0) {
> > > > + kvm_put_kvm(kvm);
> > > > + return r;
> > > > + }
> > > > +
> > >
> > > Need to fix error handling below as well?
> > > Better do it with chained gotos if yes.
> >
> > Let's make it another separate patch.
>
> Well you add a new failure mode, you need to cleanup
> properly ...
Oh, I think kvm_put_kvm() should take care of this?
--
regards
Yang, Sheng
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