| commit | e16b46605960bd071a3e26f316e0bb600ae91e37 | |
| author | Keith Busch <keith.busch@intel.com> | |
| Fri, 22 Jul 2016 03:40:28 +0000 (21 21:40 -0600) | ||
| committer | Bjorn Helgaas <bhelgaas@google.com> | |
| Mon, 25 Jul 2016 17:52:47 +0000 (25 12:52 -0500) | ||
| tree | cbddd9ca52a24d2a414c48e375d89f8c36596087 | treesnapshot (tar.gz zip) |
| parent | af8c34ce6ae32addda3788d54a7e340cad22516b | commitdiff |
PCI: Allow additional bus numbers for hotplug bridges
A user may hot add a switch requiring more than one bus to enumerate. This
previously required a system reboot if BIOS did not sufficiently pad the
bus resource, which they frequently don't do.
Add a kernel parameter so a user can specify the minimum number of bus
numbers to reserve for a hotplug bridge's subordinate buses so rebooting
won't be necessary.
The default is 1, which is equivalent to previous behavior.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
A user may hot add a switch requiring more than one bus to enumerate. This
previously required a system reboot if BIOS did not sufficiently pad the
bus resource, which they frequently don't do.
Add a kernel parameter so a user can specify the minimum number of bus
numbers to reserve for a hotplug bridge's subordinate buses so rebooting
won't be necessary.
The default is 1, which is equivalent to previous behavior.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| Documentation/kernel-parameters.txt | diffblobblamehistory | |
| drivers/pci/pci.c | diffblobblamehistory | |
| drivers/pci/probe.c | diffblobblamehistory | |
| include/linux/pci.h | diffblobblamehistory |