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[Qemu-devel] [RFC PATCH 0/2] Allow RedHat PCI bridges reserve more buses
From: |
Aleksandr Bezzubikov |
Subject: |
[Qemu-devel] [RFC PATCH 0/2] Allow RedHat PCI bridges reserve more buses than necessary during init |
Date: |
Wed, 19 Jul 2017 16:20:12 +0300 |
Now PCI bridges (and PCIE root port too) get a bus range number in system init,
basing on currently plugged devices. That's why when one wants to hotplug
another bridge,
it needs his child bus, which the parent is unable to provide.
The suggested workaround is to have vendor-specific capability in RedHat
generic pcie-root-port
that contains number of additional bus to reserve on BIOS PCI init.
Aleksandr Bezzubikov (2):
pci: add support for direct usage of bdf for capability lookup
pci: enable RedHat pci bridges to reserve more buses
src/fw/pciinit.c | 12 ++++++++++--
src/hw/pcidevice.c | 24 ++++++++++++++++++++++++
src/hw/pcidevice.h | 1 +
3 files changed, 35 insertions(+), 2 deletions(-)
--
2.7.4
- [Qemu-devel] [RFC PATCH 0/2] Allow RedHat PCI bridges reserve more buses than necessary during init,
Aleksandr Bezzubikov <=