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[Qemu-ppc] [PATCH|RFC 0/1] Fix PCI hotplug on pseries guest
From: |
Laurent Vivier |
Subject: |
[Qemu-ppc] [PATCH|RFC 0/1] Fix PCI hotplug on pseries guest |
Date: |
Wed, 22 Jul 2015 13:54:58 +0200 |
When hotplugging a new PCI card, for instance virtio-net-pci, into pseries
guest the card appears on the PCI bus but it is not usable.
virto-net module probe fails with -2. This is because virtqs cannot be
accessed.
The kernel affects address 0 for BAR0 I/O:
pci 0000:00:01.0: BAR 0: assigned [io 0x10000-0x1001f]
whereas QEMU ignores it (info qtree):
bar 0: i/o at 0xffffffffffffffff [0x1e]
Michael has already sent a patch to fix this issue, but this fix is
common for all architectures. I have tried to modify it to only
change PCI behavior conditionally.
Michael Roth (1):
pci: allow 0 address for PCI IO/MEM regions
hw/pci/pci.c | 9 ++++++---
hw/ppc/spapr_pci.c | 1 +
include/hw/pci/pci_bus.h | 5 +++++
3 files changed, 12 insertions(+), 3 deletions(-)
--
2.1.0
- [Qemu-ppc] [PATCH|RFC 0/1] Fix PCI hotplug on pseries guest,
Laurent Vivier <=
- [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Laurent Vivier, 2015/07/22
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Michael S. Tsirkin, 2015/07/22
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Alexander Graf, 2015/07/22
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Laurent Vivier, 2015/07/22
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Alexander Graf, 2015/07/22
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, David Gibson, 2015/07/23
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Alexander Graf, 2015/07/23
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Laurent Vivier, 2015/07/23
- Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Laurent Vivier, 2015/07/23
Re: [Qemu-ppc] [PATCH|RFC 1/1] pci: allow 0 address for PCI IO/MEM regions, Michael S. Tsirkin, 2015/07/23