Question about AUTO path?

[Yemaoxin]

When a Page Fault is encountered, will Auto perform all memcpy operations by the CPU, or will the CPU just touch the address corresponding to the page fault as in the DSA example code to deal with the missing page, while the hardware DSA does the memcpy.

I have 1MB of data that needs to be migrated between two addresses, and even though I do this by TOUCHING the first few bytes of each page in the 1MB, in actual execution, I keep running into Page Fault, and what do I need to do to avoid Page Fault in the HW path.

[abdelrahim-hentabli]

Hey @Yemaoxin

For your first question, when encountering a Page Fault, the CPU will just "take over" and complete the rest of the operation.

For the second part, I don't see how you keep encountering a page fault even after TOUCHING all the pages.