How to add a haradware breakpoint on a physical memory address?

[valdis.kletnieks at vt.edu]

On Fri, 17 Nov 2017 17:57:26 +0800, kipade said:

> I found some memory was rewrite by gpu module, but i have not found where it layout.
> I just use samples hw_breakpoint module for memory monitor.
> However, i found it only monitor on a virtual address,
> in another words, if two variable point the same physical memory, it can't be detected
> if I just monitor on the other variable.

If you have two different variables pointing to the same physical address,
you *probably* are doing something wrong.  Why was something else
using memory that got used by the GPU?


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