Re: [PATCH][v4] livepatch/ppc: Enable livepatching on powerpc

On 4 Mar 2016 03:52, "Petr Mladek" [off-list ref] wrote:

From: Balbir Singh <bsingharora@gmail.com>

Changelog v4:
        1. Renamed klp_matchaddr() to klp_get_ftrace_location()
           and used it just to convert the function address.
        2. Synced klp_write_module_reloc() with s390(); made it
           inline, no error message, return -ENOSYS
        3. Added an error message when including
           powerpc/include/asm/livepatch.h without HAVE_LIVEPATCH
        4. Update some comments.
Changelog v3:
        1. Moved -ENOSYS to -EINVAL in klp_write_module_reloc
        2. Moved klp_matchaddr to use ftrace_location_range
Changelog v2:
        1. Implement review comments by Michael
        2. The previous version compared _NIP from the
           wrong location to check for whether we
           are going to a patched location

This applies on top of the patches posted by Michael
https://patchwork.ozlabs.org/patch/589791/

It enables livepatching. This takes patch 6/8 and 7/8 of v8 as the base.
(See the reference [1] below) and adds logic for checking offset ranges
in livepatch with ftrace_location_range.

I tested the sample in the livepatch

Signed-off-by: Torsten Duwe <redacted>
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>

Like the cleanup and the patch

Balbir