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SubjectRe: A problem of Intel IOMMU hardware ?
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Hi Alex,

On 3/17/21 11:18 PM, Alex Williamson wrote:
>>> {MAP, 0x0, 0xc0000000}, --------------------------------- (b)
>>> use GDB to pause at here, and then DMA read IOVA=0,
>> IOVA 0 seems to be a special one. Have you verified with other addresses
>> than IOVA 0?
> It is??? That would be a problem.
>

No problem from hardware point of view as far as I can see. Just
thought about software might handle it specially.

Best regards,
baolu

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