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Re: [Qemu-devel] [PATCH v2 0/2] x86_iommu: Fix segfault when starting on
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/2] x86_iommu: Fix segfault when starting on non-PCI machines |
Date: |
Mon, 18 Sep 2017 17:29:08 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Fri, Sep 15, 2017 at 05:04:35PM +0200, Mohammed Gamal wrote:
> 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
I'm fine with even keeping object_dynamic_cast() there in patch 1, but
I agree with Eduardo's questioning.
For either case:
Reviewed-by: Peter Xu <address@hidden>
>
> 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
>
--
Peter Xu