How to get host virtual address from guest physical address?

[ckim]

Hello list members,

 

In my baremetal test on aarch64, I pass the guest physical address of an array of a structure to the qemu peripheral code using peripherals register.

I soon realized the adderss is from another world and to access this address in qemu, I need the host virtual address.

I tried reading the document (and will read more) but it shows the load and store APIs, and not the address translation API.

I need that address because I have to pass the “address” to a function in a dynamic library ( a .so file). I don’t myself load or store using that address.

What is the function for this “guest physical address to host virtual address” translation?

Thank you!

 

Chan Kim