Re: [RFC PATCH 6/9] livepatch: create per-task consistency model

From: Jiri Slaby
Date: Thu Feb 12 2015 - 08:16:37 EST


On 02/12/2015, 02:08 PM, Peter Zijlstra wrote:
> How can one task run new and another task old functions?

because this is how it is designed to work in one of the consistency models.

> Once you patch
> any indirect function pointer any task will see the new call.

It does not patch any pointers. Callees' fentrys are "patched" using ftrace.

> And what's wrong with using known good spots like the freezer?

This was already discussed too. Please STA.

suse labs
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