From 8dcf94bcff5bf3b54380ae2a17b034fb3b9d58e5 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Thu, 19 Dec 2013 10:17:11 -0700 Subject: misc: Reserve minor for VFIO VFIO currently allocates it's own dynamic chardev range, reserving the first minor for the control part of the interface (/dev/vfio/vfio) and the remainder for VFIO groups (/dev/vfio/$GROUP). This works, but it doesn't support auto loading. For instance when libvirt checks for VFIO support it looks for /dev/vfio/vfio, which currently doesn't exist unless the vfio module is loaded. By converting the control device to a misc driver and reserving a static minor, we can enable auto loading. Reserving the minor is a prerequist to that conversion. Minor 196 is unused by anything currently in the kernel. Suggested-by: Paolo Bonzini Signed-off-by: Alex Williamson Acked-by: Greg Kroah-Hartman --- Documentation/devices.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/devices.txt b/Documentation/devices.txt index 80b72419ffd8..10378cc48374 100644 --- a/Documentation/devices.txt +++ b/Documentation/devices.txt @@ -409,6 +409,7 @@ Your cooperation is appreciated. 193 = /dev/d7s SPARC 7-segment display 194 = /dev/zkshim Zero-Knowledge network shim control 195 = /dev/elographics/e2201 Elographics touchscreen E271-2201 + 196 = /dev/vfio/vfio VFIO userspace driver interface 198 = /dev/sexec Signed executable interface 199 = /dev/scanners/cuecat :CueCat barcode scanner 200 = /dev/net/tun TAP/TUN network device -- cgit v1.2.3