[Qemu-devel] [PATCH v2 0/2] x86_iommu: Fix segfault when starting on non-PCI machines

[Mohammed Gamal]

Starting qemu with
qemu-system-x86_64 -S -M isapc -device {amd|intel}-iommu
leads to a segfault. The code assume PCI bus is present and
tries to access the bus structure without checking.

The patch series moves the error checks from vtd_realize()
and amdvi_realize() to the generic x86_iommu_realize() and
adds a check for PCI bus presence.

v1 --> v2:
* Change error message with capitalized acronym

Mohammed Gamal (2):
  x86_iommu: Move machine check to x86_iommu_realize()
  x86_iommu: check if machine has PCI bus

 hw/i386/amd_iommu.c   | 10 +---------
 hw/i386/intel_iommu.c | 10 +---------
 hw/i386/x86-iommu.c   | 13 +++++++++++++
 3 files changed, 15 insertions(+), 18 deletions(-)

-- 
1.8.3.1