* Greg KH (greg@xxxxxxxxx) wrote: > On Tue, Nov 25, 2008 at 07:38:39PM -0800, Chris Wright wrote: > > When doing device assignment with KVM there's currently nothing to > > protect the device from having a driver in the host as well as the guest. > > This trivial module just binds the pci device on the host to a stub > > driver so that a real host driver can't bind to the device. It has no > > pci id table, it supports only dynamic ids. > > > > # echo "8086 10f5" > /sys/bus/pci/drivers/pci-stub/new_id > > # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/e1000e/unbind > > # echo -n 0000:00:19.0 > /sys/bus/pci/drivers/pci-stub/bind > > # ls -l /sys/bus/pci/devices/0000:00:19.0/driver > > lrwxrwxrwx 1 root root 0 2008-11-25 19:10 /sys/bus/pci/devices/0000:00:19.0/driver -> ../../../bus/pci/drivers/pci-stub > > You might want to put this somewhere in the .c or documentation files > somewhere as well. OK, I'll add this to the .c file for now. > > Cc: "Kay, Allen M" <allen.m.kay@xxxxxxxxx> > > Cc: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx> > > Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx> > > --- > > drivers/pci/Kconfig | 9 +++++++++ > > drivers/pci/Makefile | 2 ++ > > drivers/pci/pci-stub.c | 38 ++++++++++++++++++++++++++++++++++++++ > > 3 files changed, 49 insertions(+), 0 deletions(-) > > create mode 100644 drivers/pci/pci-stub.c > > > > diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig > > index e1ca425..f6183df 100644 > > --- a/drivers/pci/Kconfig > > +++ b/drivers/pci/Kconfig > > @@ -42,6 +42,15 @@ config PCI_DEBUG > > > > When in doubt, say N. > > > > +config PCI_STUB > > + tristate "PCI Stub driver" > > + depends on PCI > > + help > > + Say Y or M here if you want be able to reserve a PCI device > > + when it is going to be assigned to a guest. > > "guest operating system"? Otherwise, just "guest" doesn't mean much > here in this context. fixed > Other than that minor thing, looks great. > > Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxx> thanks, -chris -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
