pub unsafe fn rmm_exit(args: [usize; 4]) -> [usize; 4]Expand description
Call rmm_exit within exception/vectors.s and jumps to EL1.
Currently, this function gets [0usize; 3] as an argument to initialize x0, x1 and x2 registers.
When an exception occurs and the flow comes back to EL2 through rmm_enter,
x0, x1 and x2 registers might be changed to contain additional information
set from handle_lower_exception.
These are the return values of this function.
The return value encodes: [rmi::RET_XXX, ret_val1, ret_val2]
In most cases, the function returns [rmi::RET_SUCCESS, _, _]
pagefault returns [rmi::RET_PAGE_FAULT, faulted address, _]