Hi,
On 24/08/2020 15:23, luckybreak051779 wrote:
Xen Team:
I am running Xen 4.13.0 on a 32-bit ARM processor. In a domU driver I
use the dma_map_single() function to obtain a DMA address.
How can I get the MFN of that DMA address from inside the domU?
We don't provide a way to find the MFN from a Guest Physical Frame.
I need
the MFN to be able to differentiate between
two identical domUs running the same driver code (e.g. both calling
dma_map_single() ).
Can you give more details of your setup? Are you trying to use the same
physical device in two domUs?
Cheers,
--
Julien Grall
