Query related to pci_alloc_consistent()

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Hi all,

If there are multiple PCIe cards of the same type, e.g. 3 or 4 network
controllers, in a node.
Now, if one allocates a buffer using pci_alloc_consistent() using
pci_dev struct of one of the card.

1) Whether that buffer can be used by remaining cards also ?
OR
Whether DMA addresses returned by pci_alloc_consistent() can be used
by all the cards explained in above situation ?

2) What will be the case for multiple platforms/architectures ?

3) There can be multiple PCIe bridges giving multiple slots on some machines.
What will happen, when above situation is considered in such machines ?

Any link of reference can be helpful.

Thanking you,
Yogeshwar
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