On Fri, 9 Apr 2021 04:54:23 +0000 "Zengtao (B)" <prime.zeng@xxxxxxxxxxxxx> wrote: > > -----邮件原件----- > > 发件人: Alex Williamson [mailto:alex.williamson@xxxxxxxxxx] > > 发送时间: 2021年3月9日 5:47 > > 收件人: alex.williamson@xxxxxxxxxx > > 抄送: cohuck@xxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; > > linux-kernel@xxxxxxxxxxxxxxx; jgg@xxxxxxxxxx; peterx@xxxxxxxxxx > > 主题: [PATCH v1 01/14] vfio: Create vfio_fs_type with inode per device > > > > By linking all the device fds we provide to userspace to an address space > > through a new pseudo fs, we can use tools like > > unmap_mapping_range() to zap all vmas associated with a device. > > > > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > > Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> > > --- > > drivers/vfio/vfio.c | 54 > > +++++++++++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 54 insertions(+) > > > > diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index > > 38779e6fd80c..abdf8d52a911 100644 > > --- a/drivers/vfio/vfio.c > > +++ b/drivers/vfio/vfio.c > > @@ -32,11 +32,18 @@ > > #include <linux/vfio.h> > > #include <linux/wait.h> > > #include <linux/sched/signal.h> > > +#include <linux/pseudo_fs.h> > > +#include <linux/mount.h> > Minor: keep the headers in alphabetical order. They started out that way, but various tree-wide changes ignoring that, and likely oversights on my part as well, has left us with numerous breaks in that rule already. > > > > #define DRIVER_VERSION "0.3" > > #define DRIVER_AUTHOR "Alex Williamson <alex.williamson@xxxxxxxxxx>" > > #define DRIVER_DESC "VFIO - User Level meta-driver" > > > > +#define VFIO_MAGIC 0x5646494f /* "VFIO" */ > Move to include/uapi/linux/magic.h ? Hmm, yeah, I suppose it probably should go there. Thanks. FWIW, I'm still working on a next version of this series, currently struggling how to handle an arbitrary number of vmas per user DMA mapping. Thanks, Alex
