Re: A problem of Intel IOMMU hardware ？

[Lu Baolu]

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