> From: Alex Williamson [mailto:alex.williamson@xxxxxxxxxx] > Sent: Thursday, January 30, 2020 7:57 AM > To: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Subject: Re: [RFC v3 2/8] vfio/type1: Make per-application (VM) PASID quota tunable > > On Wed, 29 Jan 2020 04:11:46 -0800 > "Liu, Yi L" <yi.l.liu@xxxxxxxxx> wrote: > > > From: Liu Yi L <yi.l.liu@xxxxxxxxx> > > > > The PASID quota is per-application (VM) according to vfio's PASID > > management rule. For better flexibility, quota shall be user tunable > > . This patch provides a VFIO based user interface for which quota can > > be adjusted. However, quota cannot be adjusted downward below the > > number of outstanding PASIDs. > > > > This patch only makes the per-VM PASID quota tunable. While for the > > way to tune the default PASID quota, it may require a new vfio module > > option or other way. This may be another patchset in future. > > If we give an unprivileged user the ability to increase their quota, > why do we even have a quota at all? I figured we were going to have a > module option tunable so its under the control of the system admin. > Thanks, Right. I'll need to add an option. Will add it in next version. :-) Regards, Yi Liu
