On Thu, 29 Nov 2018, Petr Mladek wrote:
> The address of the to be patched function and new function is stored
> in struct klp_func as:
>
> void *new_func;
> unsigned long old_addr;
>
> The different naming scheme and type is derived from the way how
> the addresses are set. @old_addr is assigned at runtime using
> kallsyms-based search. @new_func is statically initialized,
> for example:
>
> static struct klp_func funcs[] = {
> {
> .old_name = "cmdline_proc_show",
> .new_func = livepatch_cmdline_proc_show,
> }, { }
> };
>
> This patch changes unsigned log old_addr -> void *old_func. It removes
> some confusion when these address are later used in the code. It is
> motivated by a followup patch that adds special NOP struct klp_func
> where we want to assign func->new_func = func->old_addr respectively
> func->new_func = func->old_func.
>
> This patch does not modify the existing behavior.
>
> Suggested-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> Signed-off-by: Petr Mladek <pmladek@xxxxxxxx>
> ---
> include/linux/livepatch.h | 4 ++--
> kernel/livepatch/core.c | 6 +++---
> kernel/livepatch/patch.c | 18 ++++++++++--------
> kernel/livepatch/patch.h | 2 +-
> kernel/livepatch/transition.c | 4 ++--
> 5 files changed, 18 insertions(+), 16 deletions(-)
kernel/livepatch/patch.h also mentions old_addr in a comment.
You can add
Acked-by: Miroslav Benes <mbenes@xxxxxxx>
with that fixed.
Miroslav
