On Tue, 2013-07-09 at 15:40 +1000, Alexey Kardashevskiy wrote:
> On 07/09/2013 07:52 AM, Alex Williamson wrote:
> > On Sun, 2013-07-07 at 01:07 +1000, Alexey Kardashevskiy wrote:
> >> VFIO is designed to be used via ioctls on file descriptors
> >> returned by VFIO.
> >>
> >> However in some situati
On 07/09/2013 07:52 AM, Alex Williamson wrote:
> On Sun, 2013-07-07 at 01:07 +1000, Alexey Kardashevskiy wrote:
>> VFIO is designed to be used via ioctls on file descriptors
>> returned by VFIO.
>>
>> However in some situations support for an external user is required.
>> The first user is KVM on P
On Sun, 2013-07-07 at 01:07 +1000, Alexey Kardashevskiy wrote:
> VFIO is designed to be used via ioctls on file descriptors
> returned by VFIO.
>
> However in some situations support for an external user is required.
> The first user is KVM on PPC64 (SPAPR TCE protocol) which is going to
> use the
VFIO is designed to be used via ioctls on file descriptors
returned by VFIO.
However in some situations support for an external user is required.
The first user is KVM on PPC64 (SPAPR TCE protocol) which is going to
use the existing VFIO groups for exclusive access in real/virtual mode
on a host t
On 06/27/2013 07:42 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2013-06-27 at 16:59 +1000, Stephen Rothwell wrote:
>>> +/* Allows an external user (for example, KVM) to unlock an IOMMU
>> group */
>>> +static void vfio_group_del_external_user(struct file *filep)
>>> +{
>>> + struct vfio_group *
On Thu, 2013-06-27 at 16:59 +1000, Stephen Rothwell wrote:
> > +/* Allows an external user (for example, KVM) to unlock an IOMMU
> group */
> > +static void vfio_group_del_external_user(struct file *filep)
> > +{
> > + struct vfio_group *group = filep->private_data;
> > +
> > + BUG_ON(filep
Hi Alexy,
On Thu, 27 Jun 2013 15:02:31 +1000 Alexey Kardashevskiy wrote:
>
> +/* Allows an external user (for example, KVM) to unlock an IOMMU group */
> +static void vfio_group_del_external_user(struct file *filep)
> +{
> + struct vfio_group *group = filep->private_data;
> +
> + BUG_ON(f
Hi Alexy,
On Thu, 27 Jun 2013 15:02:31 +1000 Alexey Kardashevskiy wrote:
>
> index c488da5..54192b2 100644
> --- a/drivers/vfio/vfio.c
> +++ b/drivers/vfio/vfio.c
> @@ -1370,6 +1370,59 @@ static const struct file_operations vfio_device_fops =
> {
> };
>
> /**
> + * External user API, exporte
VFIO is designed to be used via ioctls on file descriptors
returned by VFIO.
However in some situations support for an external user is required.
The first user is KVM on PPC64 (SPAPR TCE protocol) which is going to
use the existing VFIO groups for exclusive access in real/virtual mode
in the host
