lkml.org 
[lkml]   [2021]   [Oct]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRE: [RFC 02/20] vfio: Add device class for /dev/vfio/devices
Date
> From: David Gibson <david@gibson.dropbear.id.au>
> Sent: Wednesday, September 29, 2021 10:09 AM
>
> On Sun, Sep 19, 2021 at 02:38:30PM +0800, Liu Yi L wrote:
> > This patch introduces a new interface (/dev/vfio/devices/$DEVICE) for
> > userspace to directly open a vfio device w/o relying on container/group
> > (/dev/vfio/$GROUP). Anything related to group is now hidden behind
> > iommufd (more specifically in iommu core by this RFC) in a device-centric
> > manner.
> >
> > In case a device is exposed in both legacy and new interfaces (see next
> > patch for how to decide it), this patch also ensures that when the device
> > is already opened via one interface then the other one must be blocked.
> >
> > Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
> [snip]
>
> > +static bool vfio_device_in_container(struct vfio_device *device)
> > +{
> > + return !!(device->group && device->group->container);
>
> You don't need !! here. && is already a logical operation, so returns
> a valid bool.

got it. thanks.

Regards,
Yi Liu

\
 
 \ /
  Last update: 2021-10-20 14:41    [W:0.288 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site