Miroslav Benes 372e2db721 livepatch: doc: remove the limitation for schedule() patching ... The Limitations section of the documentation describes the impossibility to livepatch anything that is inlined to __schedule() function. This had been true till 4.9 kernel came. Thanks to commit 0100301bfd ("sched/x86: Rewrite the switch_to() code") from Brian Gerst there is __switch_to_asm function now (implemented in assembly) called properly from context_switch(). RIP is thus saved on the stack and a task would return to proper version of __schedule() et al. functions. Of course __switch_to_asm() is not patchable for the reason described in the section. But there is no __fentry__ call and I cannot imagine a reason to do it anyway. Therefore, remove the paragraphs from the section. Signed-off-by: Miroslav Benes <mbenes@suse.cz> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>		2017-01-11 02:33:39 +01:00
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livepatch.txt	livepatch: doc: remove the limitation for schedule() patching	2017-01-11 02:33:39 +01:00
module-elf-format.txt	Documentation: livepatch: add section about arch-specific code	2016-08-18 23:41:56 +02:00