Michael Ellerman wrote:

On Thu, 2007-09-27 at 13:38 -0500, Scott Wood wrote:

quoted

On non-book-E-or-4xx, exceptions execute in real mode.  If a fault happens
that leads to a register dump, the kernel currently prints XXXXXXXX because
it doesn't realize that PC is a physical address.

This patch checks the state of the IMMU, and if necessary converts PC into a
virtual address.

IMMU ?

Instruction Memory Management Unit.

-Scott