On 11/07/2017 18:31, Michael S. Tsirkin wrote:
On Fri, Jul 07, 2017 at 08:43:59AM +0100, Mark Cave-Ayland wrote:
For some machines it is impossible to plug devices into a particular PCI bus
slot, e.g. for a real Ultra 5 there are 2 PCI bridges attached to the root
bus behind which all devices must be plugged. Ignoring this rule will cause
problems with interrupt routing since the interrupt numbers are calculated
based upon PCI bridge id and secondary PCI bus slot id.
This patchset adds a new dev_reserved_mask property to PCIBus which is a
bitmask used to indicate whether PCI bus slots are reserved, i.e. they cannot
be used for hot or cold plugging on a particular PCI bus.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
Hi Michael,
Could you please point me at series making use of this
functionality?
There is a discussion upstream, I am not aware of patches yet.
https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg00771.html
Thanks,
Marcel
Thanks!
Mark Cave-Ayland (3):
pci: move check for existing devfn into new pci_bus_devfn_available()
helper
pci: add dev_reserved_mask property to PCIBus
pci: add reserved slot check to do_pci_register_device()
hw/pci/pci.c | 34 ++++++++++++++++++++++++++++++----
include/hw/pci/pci_bus.h | 1 +
2 files changed, 31 insertions(+), 4 deletions(-)
--
1.7.10.4
