Re: [PATCH v6 1/2] arm64: adjust el0_sync so that a function can be called

On Thu, May 29, 2014 at 10:45:03PM +0100, Larry Bassel wrote:

To implement the context tracker properly on arm64, a function call needs to be made after debugging and interrupts are turned on, but before the lr is changed to point to ret_to_user(). If the function call is made after the lr is changed the function will not return to the correct place.

For similar reasons, defer the setting of x0 so that it doesn't need to be saved around the function call (save far_el1 in x26 temporarily instead).

Acked-by: Will Deacon will.deacon@arm.com

Thanks guys!

Will