On 14.01.15 03:33, David Gibson wrote: > pseries guests can have large numbers of PCI host bridges. To avoid the > user having to specify a number of different configuration values for every > one, the device supports an "index" property which is a shorthand setting > the various window and configuration addresses from a predefined sensible > set. > > There are some problems with the details at present: > * The "index" propery is signed, but negative values will create PCI > windows below where we expect, potentially colliding with other devices > * No limit is imposed on the "index" property and large values can > translate to extremely large window addresses. With PCI passthrough in > particular this can mean we exceed various mapping and physical address > limits causing the guest host bridge to not work in strange ways. > > This patch addresses this, by making "index" unsigned, and imposing a > limit. Currently the limit allows indices from 0..255 which is probably > enough host bridges for the time being. It's fairly easy to extend if > we discover we need more. > > Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
Thanks, applied to ppc-next. Alex
