[UNIKRAFT PATCH] pci_bus: implement recursive PCI bus enumeration

[Hugo Lefeuvre <hugo.lefeuvre@xxxxxxxxx>]

Hi,

this patch implements recursive PCI bus enumeration instead of the previous
"brute force" enumeration approach. This results in major boot time
improvements on KVM. The OSDev article on PCI [0] will be useful for the
review.

regards,
Hugo

[0] https://wiki.osdev.org/PCI

Hugo Lefeuvre (1):
  pci_bus: implement recursive PCI bus enumeration

 plat/common/pci_bus.c | 187 ++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 135 insertions(+), 52 deletions(-)

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2.7.4