Re: [RFC PATCH v3 04/12] Validate r1 value before going to host kernel in virtual mode.
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2013-09-09 09:26:50
On Mon, 2013-09-09 at 15:29 +1000, Paul Mackerras wrote:
Are we guaranteed that Sapphire will keep the stack pointer positive at all times? (More a question for Ben H than you.)
Good point, we *might* eventually set the top bit.. Ben.