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| author | Chris Wright <chrisw@sous-sol.org> | 2008-11-25 21:17:13 -0800 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:12:38 -0800 |
| commit | c70e0d9dfef3d826c8ae4f7544acc53887cb161d (patch) | |
| tree | e870ac2759edc8dbb2dc67b18c0c42e827283fc7 /drivers/pci/Kconfig | |
| parent | 2debb4d2019fa05a0896f1591dea0e0dc21bc046 (diff) | |
| download | linux-c70e0d9dfef3d826c8ae4f7544acc53887cb161d.tar.gz | |
PCI: pci-stub module to reserve pci device
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 Cc: "Kay, Allen M" <allen.m.kay@intel.com> Cc: "Nakajima, Jun" <jun.nakajima@intel.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/Kconfig')
| -rw-r--r-- | drivers/pci/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index e1ca42591ac4..2a4501dd2515 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 operating system. + + When in doubt, say N. + config HT_IRQ bool "Interrupts on hypertransport devices" default y |