[PATCH 5/5] arm: Enable IRQs before attempting to read user space in __und_usr
From: Russell King - ARM Linux <hidden>
Date: 2014-04-01 14:48:16
From: Russell King - ARM Linux <hidden>
Date: 2014-04-01 14:48:16
On Tue, Apr 01, 2014 at 05:54:15PM +0530, Arun KS wrote:
As the data abort is now handled in normal way, can we remove the fixup handler for ldrt?
No, because all instructions which access userspace, and therefore may fault, must be given a fixup handler so the kernel knows what to do should it not be able to supply the page. Omitting that marking means the only other option in that case is for the kernel to oops. -- FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly improving, and getting towards what was expected from it.