Messages in this thread | | | Date | Thu, 6 Sep 2018 23:41:22 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 1/6] Fix "x86/alternatives: Lockdep-enforce text_mutex in text_poke*()" |
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On Thu, Sep 06, 2018 at 08:57:38PM +0000, Nadav Amit wrote: > at 1:25 PM, Peter Zijlstra <peterz@infradead.org> wrote: > > > On Thu, Sep 06, 2018 at 07:58:40PM +0000, Nadav Amit wrote: > >>> With that CR3 trickery, we can rid ourselves of the text_mutex > >>> requirement, since concurrent text_poke is 'safe'. That would clean up > >>> the kgdb code quite a bit. > >> > >> I don’t know. I’m somewhat worried with multiple mechanisms potentially > >> changing the same code at the same time - and maybe ending up with some > >> mess. > > > > kgdb only pokes INT3, that should be pretty safe. > > Maybe I misunderstand your point. If you want me to get rid of text_mutex > completely,
No, just the ugly things kgdb does with it.
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