That's also in our plans. There was no virtio support in KVM when I
started working in the transport.
Thanks,
Lucho
On 8/29/07, Anthony Liguori <[EMAIL PROTECTED]> wrote:
> I think that it would be nicer to implement the p9 transport on top of
> virtio instead of directly on top of PCI. I think your PCI transport
> would make a pretty nice start of a PCI virtio transport though.
>
> Regards,
>
> Anthony Liguori
>
> On Tue, 2007-08-28 at 13:52 -0500, Eric Van Hensbergen wrote:
> > From: Latchesar Ionkov <[EMAIL PROTECTED]>
> >
> > This adds a shared memory transport for a synthetic 9p device for
> > paravirtualized file system support under KVM/QEMU.
> >
> > Signed-off-by: Latchesar Ionkov <[EMAIL PROTECTED]>
> > Signed-off-by: Eric Van Hensbergen <[EMAIL PROTECTED]>
> > ---
> > Documentation/filesystems/9p.txt |2 +
> > net/9p/Kconfig | 10 ++-
> > net/9p/Makefile |4 +
> > net/9p/trans_pci.c | 295
> > ++
> > 4 files changed, 310 insertions(+), 1 deletions(-)
> > create mode 100644 net/9p/trans_pci.c
> >
> > diff --git a/Documentation/filesystems/9p.txt
> > b/Documentation/filesystems/9p.txt
> > index 1a5f50d..e1879bd 100644
> > --- a/Documentation/filesystems/9p.txt
> > +++ b/Documentation/filesystems/9p.txt
> > @@ -46,6 +46,8 @@ OPTIONS
> > tcp - specifying a normal TCP/IP connection
> > fd - used passed file descriptors for connection
> > (see rfdno and wfdno)
> > + pci - use a PCI pseudo device for 9p communication
> > + over shared memory between a guest and host
> >
> >uname=name user name to attempt mount as on the remote server. The
> > server may override or ignore this value. Certain user
> > diff --git a/net/9p/Kconfig b/net/9p/Kconfig
> > index 09566ae..8517560 100644
> > --- a/net/9p/Kconfig
> > +++ b/net/9p/Kconfig
> > @@ -16,13 +16,21 @@ menuconfig NET_9P
> > config NET_9P_FD
> > depends on NET_9P
> > default y if NET_9P
> > - tristate "9P File Descriptor Transports (Experimental)"
> > + tristate "9p File Descriptor Transports (Experimental)"
> > help
> > This builds support for file descriptor transports for 9p
> > which includes support for TCP/IP, named pipes, or passed
> > file descriptors. TCP/IP is the default transport for 9p,
> > so if you are going to use 9p, you'll likely want this.
> >
> > +config NET_9P_PCI
> > + depends on NET_9P
> > + tristate "9p PCI Shared Memory Transport (Experimental)"
> > + help
> > + This builds support for a PCI psuedo-device currently available
> > + under KVM/QEMU which allows for 9p transactions over shared
> > + memory between the guest and the host.
> > +
> > config NET_9P_DEBUG
> > bool "Debug information"
> > depends on NET_9P
> > diff --git a/net/9p/Makefile b/net/9p/Makefile
> > index 7b2a67a..26ce89d 100644
> > --- a/net/9p/Makefile
> > +++ b/net/9p/Makefile
> > @@ -1,5 +1,6 @@
> > obj-$(CONFIG_NET_9P) := 9pnet.o
> > obj-$(CONFIG_NET_9P_FD) += 9pnet_fd.o
> > +obj-$(CONFIG_NET_9P_PCI) += 9pnet_pci.o
> >
> > 9pnet-objs := \
> > mod.o \
> > @@ -14,3 +15,6 @@ obj-$(CONFIG_NET_9P_FD) += 9pnet_fd.o
> >
> > 9pnet_fd-objs := \
> > trans_fd.o \
> > +
> > +9pnet_pci-objs := \
> > + trans_pci.o \
> > diff --git a/net/9p/trans_pci.c b/net/9p/trans_pci.c
> > new file mode 100644
> > index 000..36ddc5f
> > --- /dev/null
> > +++ b/net/9p/trans_pci.c
> > @@ -0,0 +1,295 @@
> > +/*
> > + * net/9p/trans_pci.c
> > + *
> > + * 9P over PCI transport layer. For use with KVM/QEMU.
> > + *
> > + * Copyright (C) 2007 by Latchesar Ionkov <[EMAIL PROTECTED]>
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License version 2
> > + * as published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful,
> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> > + * GNU General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU General Public License
> > + * along with this program; if not, write to:
> > + * Free Software Foundation
> > + * 51 Franklin Street, Fifth Floor
> > + * Boston, MA 02111-1301 USA
> > + *
> > + */
> > +
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +
> > +#define P9PCI_DRIVER_NAME "9P PCI Device"
> > +#define P9PCI_DRIVER_VERSION "1"
> > +
> > +#define PCI_VENDOR_ID_9P 0x5002
> > +#define PCI_DEVICE_ID_9P 0x000D
> > +
