[PATCH] ARM: kdump: copy kernel relocation code at the kexec prepare stage
Russell King - ARM Linux
linux at arm.linux.org.uk
Mon Sep 19 10:41:37 EDT 2011
On Mon, Sep 19, 2011 at 07:11:59AM -0700, Lei Wen wrote:
> Thanks for this reminding!
> Then how about add flush_icache_range at the end of machine_kexec_prepare?
> Could it be acceptable?
I think it should be done.
> Also with this change, do we still need flush icache at the end stage of
You need to use flush_icache_range() whenever you write _instructions_
to an area of memory which you intend to execute. If you're not writing
instructions, you shouldn't use flush_icache_range().
More information about the kexec