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Re: [Qemu-devel] [PATCH 0/3] pci: allow PCI bus slots to be marked as re
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 0/3] pci: allow PCI bus slots to be marked as reserved |
Date: |
Tue, 11 Jul 2017 18:31:35 +0300 |
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 <address@hidden>
Could you please point me at series making use of this
functionality?
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