Re: [Xen-devel] [PATCH v3 0/2] VT-d flush issue

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.12.15 at 14:57, <quan.xu@xxxxxxxxx> wrote:
> 2. If VT-d is bug, does the hardware_domain continue to work with PCIe 
> Devices / DRAM well with DMA remapping error?
>    I think it is no. furthermore, i think VMM can NOT run a normal HVM 
> domain without device-passthrough.

In addition to what Andrew said - VT-d is effectively not in use for
domains without PT device. Impacting all such domains by crashing
the hypervisor just because (in the extreme case) a single domain
with PT devices exhibited a flush issue is a no-go imo.

Jan


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