[PATCH v5] ARM: uprobes need icache flush after xol write

[Oleg Nesterov]

On 04/25, Victor Kamensky wrote:
>
> Note ARM cache flush function need kernel address
> through which instruction write happened, so instead
> of using uprobes copy_to_page function changed
> code to explicitly map page and do memcpy.

Again, I can't review the changes in arm/, although I think there are
correct.

But personally I agree with this patch, we need something for v3.15,
and unless Russell objects I'd vote for this change.

FWIW,

Acked-by: Oleg Nesterov <oleg at redhat.com>