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authorChris Wright <chrisw@sous-sol.org>2008-11-25 21:17:13 -0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-01-07 11:12:38 -0800
commitc70e0d9dfef3d826c8ae4f7544acc53887cb161d (patch)
treee870ac2759edc8dbb2dc67b18c0c42e827283fc7 /drivers/pci/Kconfig
parent2debb4d2019fa05a0896f1591dea0e0dc21bc046 (diff)
downloadop-kernel-dev-c70e0d9dfef3d826c8ae4f7544acc53887cb161d.zip
op-kernel-dev-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/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e1ca425..2a4501d 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
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